# CONFIG_ARCH_SELECT_MEMORY_MODEL is not set
# CONFIG_ARCH_SPARSEMEM_DEFAULT is not set
# CONFIG_ARCH_SUNXI is not set
-CONFIG_ARCH_SUPPORTS_MSI=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
# CONFIG_ARCH_VIRT is not set
CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
CONFIG_I2C_IMX=y
# CONFIG_IMX2_WDT is not set
# CONFIG_IMX_DMA is not set
-CONFIG_IMX_PCIE=y
# CONFIG_IMX_SDMA is not set
CONFIG_INITRAMFS_SOURCE=""
CONFIG_IRQCHIP=y
# CONFIG_MACH_MX51_BABBAGE is not set
CONFIG_MDIO_BOARDINFO=y
CONFIG_MFD_SYSCON=y
+CONFIG_MIGHT_HAVE_PCI=y
CONFIG_MMC=y
CONFIG_MMC_BLOCK=y
# CONFIG_MMC_MXC is not set
CONFIG_PAGEFLAGS_EXTENDED=y
CONFIG_PAGE_OFFSET=0x80000000
CONFIG_PCI=y
-CONFIG_PCI_MSI=y
+CONFIG_PCIE_DW=y
+CONFIG_PCI_DOMAINS=y
+CONFIG_PCI_IMX6=y
CONFIG_PERF_EVENTS=y
CONFIG_PERF_USE_VMALLOC=y
CONFIG_PHYLIB=y
};
&pcie {
- rst-gpios = <&gpio1 29 0>; /* PCIESWT_RST# */
- clken-gpios = <&gpio1 20 0>; /* not used */
+ reset-gpios = <&gpio1 29 0>;
status = "okay";
eth1: sky2@8 { /* MAC/PHY on bus 8 */
--- /dev/null
+/*
+ * Synopsys Designware PCIe host controller driver
+ *
+ * Copyright (C) 2013 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Author: Jingoo Han <jg1.han@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/pci.h>
+#include <linux/pci_regs.h>
+#include <linux/types.h>
+
+#include "pcie-designware.h"
+
+/* Synopsis specific PCIE configuration registers */
+#define PCIE_PORT_LINK_CONTROL 0x710
+#define PORT_LINK_MODE_MASK (0x3f << 16)
+#define PORT_LINK_MODE_1_LANES (0x1 << 16)
+#define PORT_LINK_MODE_2_LANES (0x3 << 16)
+#define PORT_LINK_MODE_4_LANES (0x7 << 16)
+
+#define PCIE_LINK_WIDTH_SPEED_CONTROL 0x80C
+#define PORT_LOGIC_SPEED_CHANGE (0x1 << 17)
+#define PORT_LOGIC_LINK_WIDTH_MASK (0x1ff << 8)
+#define PORT_LOGIC_LINK_WIDTH_1_LANES (0x1 << 8)
+#define PORT_LOGIC_LINK_WIDTH_2_LANES (0x2 << 8)
+#define PORT_LOGIC_LINK_WIDTH_4_LANES (0x4 << 8)
+
+#define PCIE_MSI_ADDR_LO 0x820
+#define PCIE_MSI_ADDR_HI 0x824
+#define PCIE_MSI_INTR0_ENABLE 0x828
+#define PCIE_MSI_INTR0_MASK 0x82C
+#define PCIE_MSI_INTR0_STATUS 0x830
+
+#define PCIE_ATU_VIEWPORT 0x900
+#define PCIE_ATU_REGION_INBOUND (0x1 << 31)
+#define PCIE_ATU_REGION_OUTBOUND (0x0 << 31)
+#define PCIE_ATU_REGION_INDEX1 (0x1 << 0)
+#define PCIE_ATU_REGION_INDEX0 (0x0 << 0)
+#define PCIE_ATU_CR1 0x904
+#define PCIE_ATU_TYPE_MEM (0x0 << 0)
+#define PCIE_ATU_TYPE_IO (0x2 << 0)
+#define PCIE_ATU_TYPE_CFG0 (0x4 << 0)
+#define PCIE_ATU_TYPE_CFG1 (0x5 << 0)
+#define PCIE_ATU_CR2 0x908
+#define PCIE_ATU_ENABLE (0x1 << 31)
+#define PCIE_ATU_BAR_MODE_ENABLE (0x1 << 30)
+#define PCIE_ATU_LOWER_BASE 0x90C
+#define PCIE_ATU_UPPER_BASE 0x910
+#define PCIE_ATU_LIMIT 0x914
+#define PCIE_ATU_LOWER_TARGET 0x918
+#define PCIE_ATU_BUS(x) (((x) & 0xff) << 24)
+#define PCIE_ATU_DEV(x) (((x) & 0x1f) << 19)
+#define PCIE_ATU_FUNC(x) (((x) & 0x7) << 16)
+#define PCIE_ATU_UPPER_TARGET 0x91C
+
+static struct hw_pci dw_pci;
+
+unsigned long global_io_offset;
+
+static inline struct pcie_port *sys_to_pcie(struct pci_sys_data *sys)
+{
+ return sys->private_data;
+}
+
+int cfg_read(void __iomem *addr, int where, int size, u32 *val)
+{
+ *val = readl(addr);
+
+ if (size == 1)
+ *val = (*val >> (8 * (where & 3))) & 0xff;
+ else if (size == 2)
+ *val = (*val >> (8 * (where & 3))) & 0xffff;
+ else if (size != 4)
+ return PCIBIOS_BAD_REGISTER_NUMBER;
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+int cfg_write(void __iomem *addr, int where, int size, u32 val)
+{
+ if (size == 4)
+ writel(val, addr);
+ else if (size == 2)
+ writew(val, addr + (where & 2));
+ else if (size == 1)
+ writeb(val, addr + (where & 3));
+ else
+ return PCIBIOS_BAD_REGISTER_NUMBER;
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+static inline void dw_pcie_readl_rc(struct pcie_port *pp, u32 reg, u32 *val)
+{
+ if (pp->ops->readl_rc)
+ pp->ops->readl_rc(pp, pp->dbi_base + reg, val);
+ else
+ *val = readl(pp->dbi_base + reg);
+}
+
+static inline void dw_pcie_writel_rc(struct pcie_port *pp, u32 val, u32 reg)
+{
+ if (pp->ops->writel_rc)
+ pp->ops->writel_rc(pp, val, pp->dbi_base + reg);
+ else
+ writel(val, pp->dbi_base + reg);
+}
+
+int dw_pcie_rd_own_conf(struct pcie_port *pp, int where, int size,
+ u32 *val)
+{
+ int ret;
+
+ if (pp->ops->rd_own_conf)
+ ret = pp->ops->rd_own_conf(pp, where, size, val);
+ else
+ ret = cfg_read(pp->dbi_base + (where & ~0x3), where, size, val);
+
+ return ret;
+}
+
+int dw_pcie_wr_own_conf(struct pcie_port *pp, int where, int size,
+ u32 val)
+{
+ int ret;
+
+ if (pp->ops->wr_own_conf)
+ ret = pp->ops->wr_own_conf(pp, where, size, val);
+ else
+ ret = cfg_write(pp->dbi_base + (where & ~0x3), where, size,
+ val);
+
+ return ret;
+}
+
+int dw_pcie_link_up(struct pcie_port *pp)
+{
+ if (pp->ops->link_up)
+ return pp->ops->link_up(pp);
+ else
+ return 0;
+}
+
+int __init dw_pcie_host_init(struct pcie_port *pp)
+{
+ struct device_node *np = pp->dev->of_node;
+ struct of_pci_range range;
+ struct of_pci_range_parser parser;
+ u32 val;
+
+ if (of_pci_range_parser_init(&parser, np)) {
+ dev_err(pp->dev, "missing ranges property\n");
+ return -EINVAL;
+ }
+
+ /* Get the I/O and memory ranges from DT */
+ for_each_of_pci_range(&parser, &range) {
+ unsigned long restype = range.flags & IORESOURCE_TYPE_BITS;
+ if (restype == IORESOURCE_IO) {
+ of_pci_range_to_resource(&range, np, &pp->io);
+ pp->io.name = "I/O";
+ pp->io.start = max_t(resource_size_t,
+ PCIBIOS_MIN_IO,
+ range.pci_addr + global_io_offset);
+ pp->io.end = min_t(resource_size_t,
+ IO_SPACE_LIMIT,
+ range.pci_addr + range.size
+ + global_io_offset);
+ pp->config.io_size = resource_size(&pp->io);
+ pp->config.io_bus_addr = range.pci_addr;
+ }
+ if (restype == IORESOURCE_MEM) {
+ of_pci_range_to_resource(&range, np, &pp->mem);
+ pp->mem.name = "MEM";
+ pp->config.mem_size = resource_size(&pp->mem);
+ pp->config.mem_bus_addr = range.pci_addr;
+ }
+ if (restype == 0) {
+ of_pci_range_to_resource(&range, np, &pp->cfg);
+ pp->config.cfg0_size = resource_size(&pp->cfg)/2;
+ pp->config.cfg1_size = resource_size(&pp->cfg)/2;
+ }
+ }
+
+ if (!pp->dbi_base) {
+ pp->dbi_base = devm_ioremap(pp->dev, pp->cfg.start,
+ resource_size(&pp->cfg));
+ if (!pp->dbi_base) {
+ dev_err(pp->dev, "error with ioremap\n");
+ return -ENOMEM;
+ }
+ }
+
+ pp->cfg0_base = pp->cfg.start;
+ pp->cfg1_base = pp->cfg.start + pp->config.cfg0_size;
+ pp->io_base = pp->io.start;
+ pp->mem_base = pp->mem.start;
+
+ pp->va_cfg0_base = devm_ioremap(pp->dev, pp->cfg0_base,
+ pp->config.cfg0_size);
+ if (!pp->va_cfg0_base) {
+ dev_err(pp->dev, "error with ioremap in function\n");
+ return -ENOMEM;
+ }
+ pp->va_cfg1_base = devm_ioremap(pp->dev, pp->cfg1_base,
+ pp->config.cfg1_size);
+ if (!pp->va_cfg1_base) {
+ dev_err(pp->dev, "error with ioremap\n");
+ return -ENOMEM;
+ }
+
+ if (of_property_read_u32(np, "num-lanes", &pp->lanes)) {
+ dev_err(pp->dev, "Failed to parse the number of lanes\n");
+ return -EINVAL;
+ }
+
+ if (pp->ops->host_init)
+ pp->ops->host_init(pp);
+
+ dw_pcie_wr_own_conf(pp, PCI_BASE_ADDRESS_0, 4, 0);
+
+ /* program correct class for RC */
+ dw_pcie_wr_own_conf(pp, PCI_CLASS_DEVICE, 2, PCI_CLASS_BRIDGE_PCI);
+
+ dw_pcie_rd_own_conf(pp, PCIE_LINK_WIDTH_SPEED_CONTROL, 4, &val);
+ val |= PORT_LOGIC_SPEED_CHANGE;
+ dw_pcie_wr_own_conf(pp, PCIE_LINK_WIDTH_SPEED_CONTROL, 4, val);
+
+ dw_pci.nr_controllers = 1;
+ dw_pci.private_data = (void **)&pp;
+
+ pci_common_init(&dw_pci);
+ pci_assign_unassigned_resources();
+#ifdef CONFIG_PCI_DOMAINS
+ dw_pci.domain++;
+#endif
+
+ return 0;
+}
+
+static void dw_pcie_prog_viewport_cfg0(struct pcie_port *pp, u32 busdev)
+{
+ /* Program viewport 0 : OUTBOUND : CFG0 */
+ dw_pcie_writel_rc(pp, PCIE_ATU_REGION_OUTBOUND | PCIE_ATU_REGION_INDEX0,
+ PCIE_ATU_VIEWPORT);
+ dw_pcie_writel_rc(pp, pp->cfg0_base, PCIE_ATU_LOWER_BASE);
+ dw_pcie_writel_rc(pp, (pp->cfg0_base >> 32), PCIE_ATU_UPPER_BASE);
+ dw_pcie_writel_rc(pp, pp->cfg0_base + pp->config.cfg0_size - 1,
+ PCIE_ATU_LIMIT);
+ dw_pcie_writel_rc(pp, busdev, PCIE_ATU_LOWER_TARGET);
+ dw_pcie_writel_rc(pp, 0, PCIE_ATU_UPPER_TARGET);
+ dw_pcie_writel_rc(pp, PCIE_ATU_TYPE_CFG0, PCIE_ATU_CR1);
+ dw_pcie_writel_rc(pp, PCIE_ATU_ENABLE, PCIE_ATU_CR2);
+}
+
+static void dw_pcie_prog_viewport_cfg1(struct pcie_port *pp, u32 busdev)
+{
+ /* Program viewport 1 : OUTBOUND : CFG1 */
+ dw_pcie_writel_rc(pp, PCIE_ATU_REGION_OUTBOUND | PCIE_ATU_REGION_INDEX1,
+ PCIE_ATU_VIEWPORT);
+ dw_pcie_writel_rc(pp, PCIE_ATU_TYPE_CFG1, PCIE_ATU_CR1);
+ dw_pcie_writel_rc(pp, PCIE_ATU_ENABLE, PCIE_ATU_CR2);
+ dw_pcie_writel_rc(pp, pp->cfg1_base, PCIE_ATU_LOWER_BASE);
+ dw_pcie_writel_rc(pp, (pp->cfg1_base >> 32), PCIE_ATU_UPPER_BASE);
+ dw_pcie_writel_rc(pp, pp->cfg1_base + pp->config.cfg1_size - 1,
+ PCIE_ATU_LIMIT);
+ dw_pcie_writel_rc(pp, busdev, PCIE_ATU_LOWER_TARGET);
+ dw_pcie_writel_rc(pp, 0, PCIE_ATU_UPPER_TARGET);
+}
+
+static void dw_pcie_prog_viewport_mem_outbound(struct pcie_port *pp)
+{
+ /* Program viewport 0 : OUTBOUND : MEM */
+ dw_pcie_writel_rc(pp, PCIE_ATU_REGION_OUTBOUND | PCIE_ATU_REGION_INDEX0,
+ PCIE_ATU_VIEWPORT);
+ dw_pcie_writel_rc(pp, PCIE_ATU_TYPE_MEM, PCIE_ATU_CR1);
+ dw_pcie_writel_rc(pp, PCIE_ATU_ENABLE, PCIE_ATU_CR2);
+ dw_pcie_writel_rc(pp, pp->mem_base, PCIE_ATU_LOWER_BASE);
+ dw_pcie_writel_rc(pp, (pp->mem_base >> 32), PCIE_ATU_UPPER_BASE);
+ dw_pcie_writel_rc(pp, pp->mem_base + pp->config.mem_size - 1,
+ PCIE_ATU_LIMIT);
+ dw_pcie_writel_rc(pp, pp->config.mem_bus_addr, PCIE_ATU_LOWER_TARGET);
+ dw_pcie_writel_rc(pp, upper_32_bits(pp->config.mem_bus_addr),
+ PCIE_ATU_UPPER_TARGET);
+}
+
+static void dw_pcie_prog_viewport_io_outbound(struct pcie_port *pp)
+{
+ /* Program viewport 1 : OUTBOUND : IO */
+ dw_pcie_writel_rc(pp, PCIE_ATU_REGION_OUTBOUND | PCIE_ATU_REGION_INDEX1,
+ PCIE_ATU_VIEWPORT);
+ dw_pcie_writel_rc(pp, PCIE_ATU_TYPE_IO, PCIE_ATU_CR1);
+ dw_pcie_writel_rc(pp, PCIE_ATU_ENABLE, PCIE_ATU_CR2);
+ dw_pcie_writel_rc(pp, pp->io_base, PCIE_ATU_LOWER_BASE);
+ dw_pcie_writel_rc(pp, (pp->io_base >> 32), PCIE_ATU_UPPER_BASE);
+ dw_pcie_writel_rc(pp, pp->io_base + pp->config.io_size - 1,
+ PCIE_ATU_LIMIT);
+ dw_pcie_writel_rc(pp, pp->config.io_bus_addr, PCIE_ATU_LOWER_TARGET);
+ dw_pcie_writel_rc(pp, upper_32_bits(pp->config.io_bus_addr),
+ PCIE_ATU_UPPER_TARGET);
+}
+
+static int dw_pcie_rd_other_conf(struct pcie_port *pp, struct pci_bus *bus,
+ u32 devfn, int where, int size, u32 *val)
+{
+ int ret = PCIBIOS_SUCCESSFUL;
+ u32 address, busdev;
+
+ busdev = PCIE_ATU_BUS(bus->number) | PCIE_ATU_DEV(PCI_SLOT(devfn)) |
+ PCIE_ATU_FUNC(PCI_FUNC(devfn));
+ address = where & ~0x3;
+
+ if (bus->parent->number == pp->root_bus_nr) {
+ dw_pcie_prog_viewport_cfg0(pp, busdev);
+ ret = cfg_read(pp->va_cfg0_base + address, where, size, val);
+ dw_pcie_prog_viewport_mem_outbound(pp);
+ } else {
+ dw_pcie_prog_viewport_cfg1(pp, busdev);
+ ret = cfg_read(pp->va_cfg1_base + address, where, size, val);
+ dw_pcie_prog_viewport_io_outbound(pp);
+ }
+
+ return ret;
+}
+
+static int dw_pcie_wr_other_conf(struct pcie_port *pp, struct pci_bus *bus,
+ u32 devfn, int where, int size, u32 val)
+{
+ int ret = PCIBIOS_SUCCESSFUL;
+ u32 address, busdev;
+
+ busdev = PCIE_ATU_BUS(bus->number) | PCIE_ATU_DEV(PCI_SLOT(devfn)) |
+ PCIE_ATU_FUNC(PCI_FUNC(devfn));
+ address = where & ~0x3;
+
+ if (bus->parent->number == pp->root_bus_nr) {
+ dw_pcie_prog_viewport_cfg0(pp, busdev);
+ ret = cfg_write(pp->va_cfg0_base + address, where, size, val);
+ dw_pcie_prog_viewport_mem_outbound(pp);
+ } else {
+ dw_pcie_prog_viewport_cfg1(pp, busdev);
+ ret = cfg_write(pp->va_cfg1_base + address, where, size, val);
+ dw_pcie_prog_viewport_io_outbound(pp);
+ }
+
+ return ret;
+}
+
+
+static int dw_pcie_valid_config(struct pcie_port *pp,
+ struct pci_bus *bus, int dev)
+{
+ /* If there is no link, then there is no device */
+ if (bus->number != pp->root_bus_nr) {
+ if (!dw_pcie_link_up(pp))
+ return 0;
+ }
+
+ /* access only one slot on each root port */
+ if (bus->number == pp->root_bus_nr && dev > 0)
+ return 0;
+
+ /*
+ * do not read more than one device on the bus directly attached
+ * to RC's (Virtual Bridge's) DS side.
+ */
+ if (bus->primary == pp->root_bus_nr && dev > 0)
+ return 0;
+
+ return 1;
+}
+
+static int dw_pcie_rd_conf(struct pci_bus *bus, u32 devfn, int where,
+ int size, u32 *val)
+{
+ struct pcie_port *pp = sys_to_pcie(bus->sysdata);
+ unsigned long flags;
+ int ret;
+
+ if (!pp) {
+ BUG();
+ return -EINVAL;
+ }
+
+ if (dw_pcie_valid_config(pp, bus, PCI_SLOT(devfn)) == 0) {
+ *val = 0xffffffff;
+ return PCIBIOS_DEVICE_NOT_FOUND;
+ }
+
+ spin_lock_irqsave(&pp->conf_lock, flags);
+ if (bus->number != pp->root_bus_nr)
+ ret = dw_pcie_rd_other_conf(pp, bus, devfn,
+ where, size, val);
+ else
+ ret = dw_pcie_rd_own_conf(pp, where, size, val);
+ spin_unlock_irqrestore(&pp->conf_lock, flags);
+
+ return ret;
+}
+
+static int dw_pcie_wr_conf(struct pci_bus *bus, u32 devfn,
+ int where, int size, u32 val)
+{
+ struct pcie_port *pp = sys_to_pcie(bus->sysdata);
+ unsigned long flags;
+ int ret;
+
+ if (!pp) {
+ BUG();
+ return -EINVAL;
+ }
+
+ if (dw_pcie_valid_config(pp, bus, PCI_SLOT(devfn)) == 0)
+ return PCIBIOS_DEVICE_NOT_FOUND;
+
+ spin_lock_irqsave(&pp->conf_lock, flags);
+ if (bus->number != pp->root_bus_nr)
+ ret = dw_pcie_wr_other_conf(pp, bus, devfn,
+ where, size, val);
+ else
+ ret = dw_pcie_wr_own_conf(pp, where, size, val);
+ spin_unlock_irqrestore(&pp->conf_lock, flags);
+
+ return ret;
+}
+
+static struct pci_ops dw_pcie_ops = {
+ .read = dw_pcie_rd_conf,
+ .write = dw_pcie_wr_conf,
+};
+
+int dw_pcie_setup(int nr, struct pci_sys_data *sys)
+{
+ struct pcie_port *pp;
+
+ pp = sys_to_pcie(sys);
+
+ if (!pp)
+ return 0;
+
+ if (global_io_offset < SZ_1M && pp->config.io_size > 0) {
+ sys->io_offset = global_io_offset - pp->config.io_bus_addr;
+ pci_ioremap_io(sys->io_offset, pp->io.start);
+ global_io_offset += SZ_64K;
+ pci_add_resource_offset(&sys->resources, &pp->io,
+ sys->io_offset);
+ }
+
+ sys->mem_offset = pp->mem.start - pp->config.mem_bus_addr;
+ pci_add_resource_offset(&sys->resources, &pp->mem, sys->mem_offset);
+
+ return 1;
+}
+
+struct pci_bus *dw_pcie_scan_bus(int nr, struct pci_sys_data *sys)
+{
+ struct pci_bus *bus;
+ struct pcie_port *pp = sys_to_pcie(sys);
+
+ if (pp) {
+ pp->root_bus_nr = sys->busnr;
+ bus = pci_scan_root_bus(NULL, sys->busnr, &dw_pcie_ops,
+ sys, &sys->resources);
+ } else {
+ bus = NULL;
+ BUG();
+ }
+
+ return bus;
+}
+
+int dw_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+ struct pcie_port *pp = sys_to_pcie(dev->bus->sysdata);
+
+ return pp->irq;
+}
+
+static struct hw_pci dw_pci = {
+ .setup = dw_pcie_setup,
+ .scan = dw_pcie_scan_bus,
+ .map_irq = dw_pcie_map_irq,
+};
+
+void dw_pcie_setup_rc(struct pcie_port *pp)
+{
+ struct pcie_port_info *config = &pp->config;
+ u32 val;
+ u32 membase;
+ u32 memlimit;
+
+ /* set the number of lines as 4 */
+ dw_pcie_readl_rc(pp, PCIE_PORT_LINK_CONTROL, &val);
+ val &= ~PORT_LINK_MODE_MASK;
+ switch (pp->lanes) {
+ case 1:
+ val |= PORT_LINK_MODE_1_LANES;
+ break;
+ case 2:
+ val |= PORT_LINK_MODE_2_LANES;
+ break;
+ case 4:
+ val |= PORT_LINK_MODE_4_LANES;
+ break;
+ }
+ dw_pcie_writel_rc(pp, val, PCIE_PORT_LINK_CONTROL);
+
+ /* set link width speed control register */
+ dw_pcie_readl_rc(pp, PCIE_LINK_WIDTH_SPEED_CONTROL, &val);
+ val &= ~PORT_LOGIC_LINK_WIDTH_MASK;
+ switch (pp->lanes) {
+ case 1:
+ val |= PORT_LOGIC_LINK_WIDTH_1_LANES;
+ break;
+ case 2:
+ val |= PORT_LOGIC_LINK_WIDTH_2_LANES;
+ break;
+ case 4:
+ val |= PORT_LOGIC_LINK_WIDTH_4_LANES;
+ break;
+ }
+ dw_pcie_writel_rc(pp, val, PCIE_LINK_WIDTH_SPEED_CONTROL);
+
+ /* setup RC BARs */
+ dw_pcie_writel_rc(pp, 0x00000004, PCI_BASE_ADDRESS_0);
+ dw_pcie_writel_rc(pp, 0x00000004, PCI_BASE_ADDRESS_1);
+
+ /* setup interrupt pins */
+ dw_pcie_readl_rc(pp, PCI_INTERRUPT_LINE, &val);
+ val &= 0xffff00ff;
+ val |= 0x00000100;
+ dw_pcie_writel_rc(pp, val, PCI_INTERRUPT_LINE);
+
+ /* setup bus numbers */
+ dw_pcie_readl_rc(pp, PCI_PRIMARY_BUS, &val);
+ val &= 0xff000000;
+ val |= 0x00010100;
+ dw_pcie_writel_rc(pp, val, PCI_PRIMARY_BUS);
+
+ /* setup memory base, memory limit */
+ membase = ((u32)pp->mem_base & 0xfff00000) >> 16;
+ memlimit = (config->mem_size + (u32)pp->mem_base) & 0xfff00000;
+ val = memlimit | membase;
+ dw_pcie_writel_rc(pp, val, PCI_MEMORY_BASE);
+
+ /* setup command register */
+ dw_pcie_readl_rc(pp, PCI_COMMAND, &val);
+ val &= 0xffff0000;
+ val |= PCI_COMMAND_IO | PCI_COMMAND_MEMORY |
+ PCI_COMMAND_MASTER | PCI_COMMAND_SERR;
+ dw_pcie_writel_rc(pp, val, PCI_COMMAND);
+}
+
+MODULE_AUTHOR("Jingoo Han <jg1.han@samsung.com>");
+MODULE_DESCRIPTION("Designware PCIe host controller driver");
+MODULE_LICENSE("GPL v2");
--- /dev/null
+/*
+ * Synopsys Designware PCIe host controller driver
+ *
+ * Copyright (C) 2013 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Author: Jingoo Han <jg1.han@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+struct pcie_port_info {
+ u32 cfg0_size;
+ u32 cfg1_size;
+ u32 io_size;
+ u32 mem_size;
+ phys_addr_t io_bus_addr;
+ phys_addr_t mem_bus_addr;
+};
+
+struct pcie_port {
+ struct device *dev;
+ u8 root_bus_nr;
+ void __iomem *dbi_base;
+ u64 cfg0_base;
+ void __iomem *va_cfg0_base;
+ u64 cfg1_base;
+ void __iomem *va_cfg1_base;
+ u64 io_base;
+ u64 mem_base;
+ spinlock_t conf_lock;
+ struct resource cfg;
+ struct resource io;
+ struct resource mem;
+ struct pcie_port_info config;
+ int irq;
+ u32 lanes;
+ struct pcie_host_ops *ops;
+};
+
+struct pcie_host_ops {
+ void (*readl_rc)(struct pcie_port *pp,
+ void __iomem *dbi_base, u32 *val);
+ void (*writel_rc)(struct pcie_port *pp,
+ u32 val, void __iomem *dbi_base);
+ int (*rd_own_conf)(struct pcie_port *pp, int where, int size, u32 *val);
+ int (*wr_own_conf)(struct pcie_port *pp, int where, int size, u32 val);
+ int (*link_up)(struct pcie_port *pp);
+ void (*host_init)(struct pcie_port *pp);
+};
+
+extern unsigned long global_io_offset;
+
+int cfg_read(void __iomem *addr, int where, int size, u32 *val);
+int cfg_write(void __iomem *addr, int where, int size, u32 val);
+int dw_pcie_wr_own_conf(struct pcie_port *pp, int where, int size, u32 val);
+int dw_pcie_rd_own_conf(struct pcie_port *pp, int where, int size, u32 *val);
+int dw_pcie_link_up(struct pcie_port *pp);
+void dw_pcie_setup_rc(struct pcie_port *pp);
+int dw_pcie_host_init(struct pcie_port *pp);
+int dw_pcie_setup(int nr, struct pci_sys_data *sys);
+struct pci_bus *dw_pcie_scan_bus(int nr, struct pci_sys_data *sys);
+int dw_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin);
--- /dev/null
+From: Andrew Murray <Andrew.Murray@arm.com>
+Subject: [PATCH] of/pci: Provide support for parsing PCI DT ranges property
+
+This patch factors out common implementation patterns to reduce overall kernel
+code and provide a means for host bridge drivers to directly obtain struct
+resources from the DT's ranges property without relying on architecture specific
+DT handling. This will make it easier to write archiecture independent host bridge
+drivers and mitigate against further duplication of DT parsing code.
+
+This patch can be used in the following way:
+
+ struct of_pci_range_parser parser;
+ struct of_pci_range range;
+
+ if (of_pci_range_parser_init(&parser, np))
+ ; //no ranges property
+
+ for_each_of_pci_range(&parser, &range) {
+
+ /*
+ directly access properties of the address range, e.g.:
+ range.pci_space, range.pci_addr, range.cpu_addr,
+ range.size, range.flags
+
+ alternatively obtain a struct resource, e.g.:
+ struct resource res;
+ of_pci_range_to_resource(&range, np, &res);
+ */
+ }
+
+Additionally the implementation takes care of adjacent ranges and merges them
+into a single range (as was the case with powerpc and microblaze).
+
+Signed-off-by: Andrew Murray <Andrew.Murray@arm.com>
+Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+Reviewed-by: Rob Herring <rob.herring@calxeda.com>
+Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+Tested-by: Linus Walleij <linus.walleij@linaro.org>
+Tested-by: Jingoo Han <jg1.han@samsung.com>
+Acked-by: Grant Likely <grant.likely@secretlab.ca>
+Signed-off-by: Jason Cooper <jason@lakedaemon.net>
+---
+ drivers/of/address.c | 67 ++++++++++++++++++++++++++++++++++++++++++++++
+ include/linux/of_address.h | 48 +++++++++++++++++++++++++++++++++
+ 2 files changed, 115 insertions(+)
+
+diff --git a/drivers/of/address.c b/drivers/of/address.c
+index 04da786..fdd0636 100644
+--- a/drivers/of/address.c
++++ b/drivers/of/address.c
+@@ -227,6 +227,73 @@ int of_pci_address_to_resource(struct device_node *dev, int bar,
+ return __of_address_to_resource(dev, addrp, size, flags, NULL, r);
+ }
+ EXPORT_SYMBOL_GPL(of_pci_address_to_resource);
++
++int of_pci_range_parser_init(struct of_pci_range_parser *parser,
++ struct device_node *node)
++{
++ const int na = 3, ns = 2;
++ int rlen;
++
++ parser->node = node;
++ parser->pna = of_n_addr_cells(node);
++ parser->np = parser->pna + na + ns;
++
++ parser->range = of_get_property(node, "ranges", &rlen);
++ if (parser->range == NULL)
++ return -ENOENT;
++
++ parser->end = parser->range + rlen / sizeof(__be32);
++
++ return 0;
++}
++EXPORT_SYMBOL_GPL(of_pci_range_parser_init);
++
++struct of_pci_range *of_pci_range_parser_one(struct of_pci_range_parser *parser,
++ struct of_pci_range *range)
++{
++ const int na = 3, ns = 2;
++
++ if (!range)
++ return NULL;
++
++ if (!parser->range || parser->range + parser->np > parser->end)
++ return NULL;
++
++ range->pci_space = parser->range[0];
++ range->flags = of_bus_pci_get_flags(parser->range);
++ range->pci_addr = of_read_number(parser->range + 1, ns);
++ range->cpu_addr = of_translate_address(parser->node,
++ parser->range + na);
++ range->size = of_read_number(parser->range + parser->pna + na, ns);
++
++ parser->range += parser->np;
++
++ /* Now consume following elements while they are contiguous */
++ while (parser->range + parser->np <= parser->end) {
++ u32 flags, pci_space;
++ u64 pci_addr, cpu_addr, size;
++
++ pci_space = be32_to_cpup(parser->range);
++ flags = of_bus_pci_get_flags(parser->range);
++ pci_addr = of_read_number(parser->range + 1, ns);
++ cpu_addr = of_translate_address(parser->node,
++ parser->range + na);
++ size = of_read_number(parser->range + parser->pna + na, ns);
++
++ if (flags != range->flags)
++ break;
++ if (pci_addr != range->pci_addr + range->size ||
++ cpu_addr != range->cpu_addr + range->size)
++ break;
++
++ range->size += size;
++ parser->range += parser->np;
++ }
++
++ return range;
++}
++EXPORT_SYMBOL_GPL(of_pci_range_parser_one);
++
+ #endif /* CONFIG_PCI */
+
+ /*
+diff --git a/include/linux/of_address.h b/include/linux/of_address.h
+index 0506eb5..4c2e6f2 100644
+--- a/include/linux/of_address.h
++++ b/include/linux/of_address.h
+@@ -4,6 +4,36 @@
+ #include <linux/errno.h>
+ #include <linux/of.h>
+
++struct of_pci_range_parser {
++ struct device_node *node;
++ const __be32 *range;
++ const __be32 *end;
++ int np;
++ int pna;
++};
++
++struct of_pci_range {
++ u32 pci_space;
++ u64 pci_addr;
++ u64 cpu_addr;
++ u64 size;
++ u32 flags;
++};
++
++#define for_each_of_pci_range(parser, range) \
++ for (; of_pci_range_parser_one(parser, range);)
++
++static inline void of_pci_range_to_resource(struct of_pci_range *range,
++ struct device_node *np,
++ struct resource *res)
++{
++ res->flags = range->flags;
++ res->start = range->cpu_addr;
++ res->end = range->cpu_addr + range->size - 1;
++ res->parent = res->child = res->sibling = NULL;
++ res->name = np->full_name;
++}
++
+ #ifdef CONFIG_OF_ADDRESS
+ extern u64 of_translate_address(struct device_node *np, const __be32 *addr);
+ extern bool of_can_translate_address(struct device_node *dev);
+@@ -27,6 +57,11 @@ static inline unsigned long pci_address_to_pio(phys_addr_t addr) { return -1; }
+ #define pci_address_to_pio pci_address_to_pio
+ #endif
+
++extern int of_pci_range_parser_init(struct of_pci_range_parser *parser,
++ struct device_node *node);
++extern struct of_pci_range *of_pci_range_parser_one(
++ struct of_pci_range_parser *parser,
++ struct of_pci_range *range);
+ #else /* CONFIG_OF_ADDRESS */
+ #ifndef of_address_to_resource
+ static inline int of_address_to_resource(struct device_node *dev, int index,
+@@ -53,6 +88,19 @@ static inline const __be32 *of_get_address(struct device_node *dev, int index,
+ {
+ return NULL;
+ }
++
++static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser,
++ struct device_node *node)
++{
++ return -1;
++}
++
++static inline struct of_pci_range *of_pci_range_parser_one(
++ struct of_pci_range_parser *parser,
++ struct of_pci_range *range)
++{
++ return NULL;
++}
+ #endif /* CONFIG_OF_ADDRESS */
+
+
+--
+1.8.4
+
--- /dev/null
+Subject: [v6,1/3] ARM: imx: Add LVDS general-purpose clocks to i.MX6Q
+From: Sean Cross <xobs@kosagi.com>
+
+The i.MX6 has two general-purpose LVDS clocks that can be driven
+from a variety of sources. This patch adds a mux and a gate for
+both of these clocks.
+
+Signed-off-by: Sean Cross <xobs@kosagi.com>
+---
+ arch/arm/mach-imx/clk-imx6q.c | 20 +++++++++++++++++++-
+ 2 files changed, 23 insertions(+), 1 deletion(-)
+
+diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c
+index 9181a24..d94be84 100644
+--- a/arch/arm/mach-imx/clk-imx6q.c
++++ b/arch/arm/mach-imx/clk-imx6q.c
+@@ -205,6 +205,11 @@ static const char *vpu_axi_sels[] = { "a
+ static const char *cko1_sels[] = { "pll3_usb_otg", "pll2_bus", "pll1_sys", "pll5_video_div",
+ "dummy", "axi", "enfc", "ipu1_di0", "ipu1_di1", "ipu2_di0",
+ "ipu2_di1", "ahb", "ipg", "ipg_per", "ckil", "pll4_post_div", };
++static const char *lvds_sels[] = {
++ "dummy", "dummy", "dummy", "dummy", "dummy", "dummy",
++ "pll4_audio", "pll5_video", "pll8_mlb", "enet_ref",
++ "pcie_ref", "sata_ref",
++};
+
+ enum mx6q_clks {
+ dummy, ckil, ckih, osc, pll2_pfd0_352m, pll2_pfd1_594m, pll2_pfd2_396m,
+@@ -238,7 +243,8 @@ enum mx6q_clks {
+ pll4_audio, pll5_video, pll8_mlb, pll7_usb_host, pll6_enet, ssi1_ipg,
+ ssi2_ipg, ssi3_ipg, rom, usbphy1, usbphy2, ldb_di0_div_3_5, ldb_di1_div_3_5,
+ sata_ref, sata_ref_100m, pcie_ref, pcie_ref_125m, enet_ref, usbphy1_gate,
+- usbphy2_gate, pll4_post_div, pll5_post_div, pll5_video_div, clk_max
++ usbphy2_gate, pll4_post_div, pll5_post_div, pll5_video_div,
++ lvds1_sel, lvds2_sel, lvds1_gate, lvds2_gate, clk_max
+ };
+
+ static struct clk *clk[clk_max];
+@@ -340,6 +347,18 @@ int __init mx6q_clocks_init(void)
+ base + 0xe0, 0, 2, 0, clk_enet_ref_table,
+ &imx_ccm_lock);
+
++ clk[lvds1_sel] = imx_clk_mux("lvds1_sel", base + 0x160, 0, 5, lvds_sels, ARRAY_SIZE(lvds_sels));
++ clk[lvds2_sel] = imx_clk_mux("lvds2_sel", base + 0x160, 5, 5, lvds_sels, ARRAY_SIZE(lvds_sels));
++
++ /*
++ * lvds1_gate and lvds2_gate are pseudo-gates. Both can be
++ * independently configured as clock inputs or outputs. We treat
++ * the "output_enable" bit as a gate, even though it's really just
++ * enabling clock output.
++ */
++ clk[lvds1_gate] = imx_clk_gate("lvds1_gate", "dummy", base + 0x160, 10);
++ clk[lvds2_gate] = imx_clk_gate("lvds2_gate", "dummy", base + 0x160, 11);
++
+ /* name parent_name reg idx */
+ clk[pll2_pfd0_352m] = imx_clk_pfd("pll2_pfd0_352m", "pll2_bus", base + 0x100, 0);
+ clk[pll2_pfd1_594m] = imx_clk_pfd("pll2_pfd1_594m", "pll2_bus", base + 0x100, 1);
--- /dev/null
+Subject: [v6,2/3] ARM: imx6q: Add PCIe bits to GPR syscon definition
+From: Sean Cross <xobs@kosagi.com>
+
+PCIe requires additional bits be defined for GPR8 and GPR12.
+
+Signed-off-by: Sean Cross <xobs@kosagi.com>
+---
+ include/linux/mfd/syscon/imx6q-iomuxc-gpr.h | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/include/linux/mfd/syscon/imx6q-iomuxc-gpr.h b/include/linux/mfd/syscon/imx6q-iomuxc-gpr.h
+index b6bdcd6..e00e9f3 100644
+--- a/include/linux/mfd/syscon/imx6q-iomuxc-gpr.h
++++ b/include/linux/mfd/syscon/imx6q-iomuxc-gpr.h
+@@ -241,6 +241,12 @@
+
+ #define IMX6Q_GPR5_L2_CLK_STOP BIT(8)
+
++#define IMX6Q_GPR8_TX_SWING_LOW (0x7f << 25)
++#define IMX6Q_GPR8_TX_SWING_FULL (0x7f << 18)
++#define IMX6Q_GPR8_TX_DEEMPH_GEN2_6DB (0x3f << 12)
++#define IMX6Q_GPR8_TX_DEEMPH_GEN2_3P5DB (0x3f << 6)
++#define IMX6Q_GPR8_TX_DEEMPH_GEN1 (0x3f << 0)
++
+ #define IMX6Q_GPR9_TZASC2_BYP BIT(1)
+ #define IMX6Q_GPR9_TZASC1_BYP BIT(0)
+
+@@ -273,7 +279,9 @@
+ #define IMX6Q_GPR12_ARMP_AHB_CLK_EN BIT(26)
+ #define IMX6Q_GPR12_ARMP_ATB_CLK_EN BIT(25)
+ #define IMX6Q_GPR12_ARMP_APB_CLK_EN BIT(24)
++#define IMX6Q_GPR12_DEVICE_TYPE (0xf << 12)
+ #define IMX6Q_GPR12_PCIE_CTL_2 BIT(10)
++#define IMX6Q_GPR12_LOS_LEVEL (0x1f << 4)
+
+ #define IMX6Q_GPR13_SDMA_STOP_REQ BIT(30)
+ #define IMX6Q_GPR13_CAN2_STOP_REQ BIT(29)
--- /dev/null
+Subject: [v6,3/3] PCI: imx6: Add support for i.MX6 PCIe controller
+From: Sean Cross <xobs@kosagi.com>
+
+Add support for the PCIe port present on the i.MX6 family of controllers.
+These use the Synopsis Designware core tied to their own PHY.
+
+Signed-off-by: Sean Cross <xobs@kosagi.com>
+Acked-by: Bjorn Helgaas <bhelgaas@google.com>
+Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
+---
+ arch/arm/boot/dts/imx6qdl.dtsi | 16 +
+ arch/arm/mach-imx/Kconfig | 2 +
+ arch/arm/mach-imx/clk-imx6q.c | 4 +
+ drivers/pci/host/Kconfig | 6 +
+ drivers/pci/host/Makefile | 1 +
+ drivers/pci/host/pci-imx6.c | 576 ++++++++++++++++++++
+ 7 files changed, 611 insertions(+), 1 deletion(-)
+ create mode 100644 drivers/pci/host/pci-imx6.c
+
+diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi
+index ccd55c2..125202e 100644
+--- a/arch/arm/boot/dts/imx6qdl.dtsi
++++ b/arch/arm/boot/dts/imx6qdl.dtsi
+@@ -116,6 +116,22 @@
+ arm,data-latency = <4 2 3>;
+ };
+
++ pcie: pcie@0x01000000 {
++ compatible = "fsl,imx6q-pcie", "snps,dw-pcie";
++ reg = <0x01ffc000 0x4000>; /* DBI */
++ #address-cells = <3>;
++ #size-cells = <2>;
++ device_type = "pci";
++ ranges = <0x00000800 0 0x01f00000 0x01f00000 0 0x00080000 /* configuration space */
++ 0x81000000 0 0 0x01f80000 0 0x00010000 /* downstream I/O */
++ 0x82000000 0 0x01000000 0x01000000 0 0x00f00000>; /* non-prefetchable memory */
++ num-lanes = <1>;
++ interrupts = <0 123 0x04>;
++ clocks = <&clks 189>, <&clks 187>, <&clks 205>, <&clks 144>;
++ clock-names = "pcie_ref_125m", "sata_ref_100m", "lvds_gate", "pcie_axi";
++ status = "disabled";
++ };
++
+ pmu {
+ compatible = "arm,cortex-a9-pmu";
+ interrupts = <0 94 0x04>;
+diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
+index 29a8af6..e6ac281 100644
+--- a/arch/arm/mach-imx/Kconfig
++++ b/arch/arm/mach-imx/Kconfig
+@@ -801,6 +801,8 @@ config SOC_IMX6Q
+ select HAVE_IMX_SRC
+ select HAVE_SMP
+ select MFD_SYSCON
++ select MIGHT_HAVE_PCI
++ select PCI_DOMAINS if PCI
+ select PINCTRL
+ select PINCTRL_IMX6Q
+ select PL310_ERRATA_588369 if CACHE_PL310
+diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c
+index d94be84..6956995 100644
+--- a/arch/arm/mach-imx/clk-imx6q.c
++++ b/arch/arm/mach-imx/clk-imx6q.c
+@@ -621,6 +621,10 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node)
+ if (ret)
+ pr_warn("failed to set up CLKO: %d\n", ret);
+
++ /* All existing boards with PCIe use LVDS1 */
++ if (IS_ENABLED(CONFIG_PCI_IMX6))
++ clk_set_parent(clk[lvds1_sel], clk[sata_ref]);
++
+ /* Set initial power mode */
+ imx6q_set_lpm(WAIT_CLOCKED);
+
+--- /dev/null
++++ b/drivers/pci/host/Kconfig
+@@ -0,0 +1,13 @@
++menu "PCI host controller drivers"
++ depends on PCI
++
++config PCIE_DW
++ bool
++
++config PCI_IMX6
++ bool "Freescale i.MX6 PCIe controller"
++ depends on SOC_IMX6Q
++ select PCIEPORTBUS
++ select PCIE_DW
++
++endmenu
+--- /dev/null
++++ b/drivers/pci/host/Makefile
+@@ -0,0 +1,2 @@
++obj-$(CONFIG_PCIE_DW) += pcie-designware.o
++obj-$(CONFIG_PCI_IMX6) += pci-imx6.o
+--- /dev/null
++++ b/drivers/pci/host/pci-imx6.c
+@@ -0,0 +1,576 @@
++/*
++ * PCIe host controller driver for Freescale i.MX6 SoCs
++ *
++ * Copyright (C) 2013 Kosagi
++ * http://www.kosagi.com
++ *
++ * Author: Sean Cross <xobs@kosagi.com>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#include <linux/clk.h>
++#include <linux/delay.h>
++#include <linux/gpio.h>
++#include <linux/kernel.h>
++#include <linux/mfd/syscon.h>
++#include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
++#include <linux/module.h>
++#include <linux/of_gpio.h>
++#include <linux/pci.h>
++#include <linux/platform_device.h>
++#include <linux/regmap.h>
++#include <linux/resource.h>
++#include <linux/signal.h>
++#include <linux/types.h>
++
++#include "pcie-designware.h"
++
++#define to_imx6_pcie(x) container_of(x, struct imx6_pcie, pp)
++
++struct imx6_pcie {
++ int reset_gpio;
++ int power_on_gpio;
++ int wake_up_gpio;
++ int disable_gpio;
++ struct clk *lvds_gate;
++ struct clk *sata_ref_100m;
++ struct clk *pcie_ref_125m;
++ struct clk *pcie_axi;
++ struct pcie_port pp;
++ struct regmap *iomuxc_gpr;
++ void __iomem *mem_base;
++};
++
++/* PCIe Port Logic registers (memory-mapped) */
++#define PL_OFFSET 0x700
++#define PCIE_PHY_DEBUG_R0 (PL_OFFSET + 0x28)
++#define PCIE_PHY_DEBUG_R1 (PL_OFFSET + 0x2c)
++
++#define PCIE_PHY_CTRL (PL_OFFSET + 0x114)
++#define PCIE_PHY_CTRL_DATA_LOC 0
++#define PCIE_PHY_CTRL_CAP_ADR_LOC 16
++#define PCIE_PHY_CTRL_CAP_DAT_LOC 17
++#define PCIE_PHY_CTRL_WR_LOC 18
++#define PCIE_PHY_CTRL_RD_LOC 19
++
++#define PCIE_PHY_STAT (PL_OFFSET + 0x110)
++#define PCIE_PHY_STAT_ACK_LOC 16
++
++/* PHY registers (not memory-mapped) */
++#define PCIE_PHY_RX_ASIC_OUT 0x100D
++
++#define PHY_RX_OVRD_IN_LO 0x1005
++#define PHY_RX_OVRD_IN_LO_RX_DATA_EN (1 << 5)
++#define PHY_RX_OVRD_IN_LO_RX_PLL_EN (1 << 3)
++
++static int pcie_phy_poll_ack(void __iomem *dbi_base, int exp_val)
++{
++ u32 val;
++ u32 max_iterations = 10;
++ u32 wait_counter = 0;
++
++ do {
++ val = readl(dbi_base + PCIE_PHY_STAT);
++ val = (val >> PCIE_PHY_STAT_ACK_LOC) & 0x1;
++ wait_counter++;
++
++ if (val == exp_val)
++ return 0;
++
++ udelay(1);
++ } while ((wait_counter < max_iterations) && (val != exp_val));
++
++ return -ETIMEDOUT;
++}
++
++static int pcie_phy_wait_ack(void __iomem *dbi_base, int addr)
++{
++ u32 val;
++ int ret;
++
++ val = addr << PCIE_PHY_CTRL_DATA_LOC;
++ writel(val, dbi_base + PCIE_PHY_CTRL);
++
++ val |= (0x1 << PCIE_PHY_CTRL_CAP_ADR_LOC);
++ writel(val, dbi_base + PCIE_PHY_CTRL);
++
++ ret = pcie_phy_poll_ack(dbi_base, 1);
++ if (ret)
++ return ret;
++
++ val = addr << PCIE_PHY_CTRL_DATA_LOC;
++ writel(val, dbi_base + PCIE_PHY_CTRL);
++
++ ret = pcie_phy_poll_ack(dbi_base, 0);
++ if (ret)
++ return ret;
++
++ return 0;
++}
++
++/* Read from the 16-bit PCIe PHY control registers (not memory-mapped) */
++static int pcie_phy_read(void __iomem *dbi_base, int addr , int *data)
++{
++ u32 val, phy_ctl;
++ int ret;
++
++ ret = pcie_phy_wait_ack(dbi_base, addr);
++ if (ret)
++ return ret;
++
++ /* assert Read signal */
++ phy_ctl = 0x1 << PCIE_PHY_CTRL_RD_LOC;
++ writel(phy_ctl, dbi_base + PCIE_PHY_CTRL);
++
++ ret = pcie_phy_poll_ack(dbi_base, 1);
++ if (ret)
++ return ret;
++
++ val = readl(dbi_base + PCIE_PHY_STAT);
++ *data = val & 0xffff;
++
++ /* deassert Read signal */
++ writel(0x00, dbi_base + PCIE_PHY_CTRL);
++
++ ret = pcie_phy_poll_ack(dbi_base, 0);
++ if (ret)
++ return ret;
++
++ return 0;
++}
++
++static int pcie_phy_write(void __iomem *dbi_base, int addr, int data)
++{
++ u32 var;
++ int ret;
++
++ /* write addr */
++ /* cap addr */
++ ret = pcie_phy_wait_ack(dbi_base, addr);
++ if (ret)
++ return ret;
++
++ var = data << PCIE_PHY_CTRL_DATA_LOC;
++ writel(var, dbi_base + PCIE_PHY_CTRL);
++
++ /* capture data */
++ var |= (0x1 << PCIE_PHY_CTRL_CAP_DAT_LOC);
++ writel(var, dbi_base + PCIE_PHY_CTRL);
++
++ ret = pcie_phy_poll_ack(dbi_base, 1);
++ if (ret)
++ return ret;
++
++ /* deassert cap data */
++ var = data << PCIE_PHY_CTRL_DATA_LOC;
++ writel(var, dbi_base + PCIE_PHY_CTRL);
++
++ /* wait for ack de-assetion */
++ ret = pcie_phy_poll_ack(dbi_base, 0);
++ if (ret)
++ return ret;
++
++ /* assert wr signal */
++ var = 0x1 << PCIE_PHY_CTRL_WR_LOC;
++ writel(var, dbi_base + PCIE_PHY_CTRL);
++
++ /* wait for ack */
++ ret = pcie_phy_poll_ack(dbi_base, 1);
++ if (ret)
++ return ret;
++
++ /* deassert wr signal */
++ var = data << PCIE_PHY_CTRL_DATA_LOC;
++ writel(var, dbi_base + PCIE_PHY_CTRL);
++
++ /* wait for ack de-assetion */
++ ret = pcie_phy_poll_ack(dbi_base, 0);
++ if (ret)
++ return ret;
++
++ writel(0x0, dbi_base + PCIE_PHY_CTRL);
++
++ return 0;
++}
++
++/* Added for PCI abort handling */
++static int imx6q_pcie_abort_handler(unsigned long addr,
++ unsigned int fsr, struct pt_regs *regs)
++{
++ /*
++ * If it was an imprecise abort, then we need to correct the
++ * return address to be _after_ the instruction.
++ */
++ if (fsr & (1 << 10))
++ regs->ARM_pc += 4;
++ return 0;
++}
++
++static int imx6_pcie_assert_core_reset(struct pcie_port *pp)
++{
++ struct imx6_pcie *imx6_pcie = to_imx6_pcie(pp);
++
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR1,
++ IMX6Q_GPR1_PCIE_TEST_PD, 1 << 18);
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12,
++ IMX6Q_GPR12_PCIE_CTL_2, 1 << 10);
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR1,
++ IMX6Q_GPR1_PCIE_REF_CLK_EN, 0 << 16);
++
++ gpio_set_value(imx6_pcie->reset_gpio, 0);
++ msleep(100);
++ gpio_set_value(imx6_pcie->reset_gpio, 1);
++
++ return 0;
++}
++
++static int imx6_pcie_deassert_core_reset(struct pcie_port *pp)
++{
++ struct imx6_pcie *imx6_pcie = to_imx6_pcie(pp);
++ int ret;
++
++ if (gpio_is_valid(imx6_pcie->power_on_gpio))
++ gpio_set_value(imx6_pcie->power_on_gpio, 1);
++
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR1,
++ IMX6Q_GPR1_PCIE_TEST_PD, 0 << 18);
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR1,
++ IMX6Q_GPR1_PCIE_REF_CLK_EN, 1 << 16);
++
++ ret = clk_prepare_enable(imx6_pcie->sata_ref_100m);
++ if (ret) {
++ dev_err(pp->dev, "unable to enable sata_ref_100m\n");
++ goto err_sata_ref;
++ }
++
++ ret = clk_prepare_enable(imx6_pcie->pcie_ref_125m);
++ if (ret) {
++ dev_err(pp->dev, "unable to enable pcie_ref_125m\n");
++ goto err_pcie_ref;
++ }
++
++ ret = clk_prepare_enable(imx6_pcie->lvds_gate);
++ if (ret) {
++ dev_err(pp->dev, "unable to enable lvds_gate\n");
++ goto err_lvds_gate;
++ }
++
++ ret = clk_prepare_enable(imx6_pcie->pcie_axi);
++ if (ret) {
++ dev_err(pp->dev, "unable to enable pcie_axi\n");
++ goto err_pcie_axi;
++ }
++
++ /* allow the clocks to stabilize */
++ usleep_range(200, 500);
++
++ return 0;
++
++err_pcie_axi:
++ clk_disable_unprepare(imx6_pcie->lvds_gate);
++err_lvds_gate:
++ clk_disable_unprepare(imx6_pcie->pcie_ref_125m);
++err_pcie_ref:
++ clk_disable_unprepare(imx6_pcie->sata_ref_100m);
++err_sata_ref:
++ return ret;
++
++}
++
++static void imx6_pcie_init_phy(struct pcie_port *pp)
++{
++ struct imx6_pcie *imx6_pcie = to_imx6_pcie(pp);
++
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12,
++ IMX6Q_GPR12_PCIE_CTL_2, 0 << 10);
++
++ /* configure constant input signal to the pcie ctrl and phy */
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12,
++ IMX6Q_GPR12_DEVICE_TYPE, PCI_EXP_TYPE_ROOT_PORT << 12);
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12,
++ IMX6Q_GPR12_LOS_LEVEL, 9 << 4);
++
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR8,
++ IMX6Q_GPR8_TX_DEEMPH_GEN1, 0 << 0);
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR8,
++ IMX6Q_GPR8_TX_DEEMPH_GEN2_3P5DB, 0 << 6);
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR8,
++ IMX6Q_GPR8_TX_DEEMPH_GEN2_6DB, 20 << 12);
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR8,
++ IMX6Q_GPR8_TX_SWING_FULL, 127 << 18);
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR8,
++ IMX6Q_GPR8_TX_SWING_LOW, 127 << 25);
++}
++
++static void imx6_pcie_host_init(struct pcie_port *pp)
++{
++ int count = 0;
++ struct imx6_pcie *imx6_pcie = to_imx6_pcie(pp);
++
++ imx6_pcie_assert_core_reset(pp);
++
++ imx6_pcie_init_phy(pp);
++
++ imx6_pcie_deassert_core_reset(pp);
++
++ dw_pcie_setup_rc(pp);
++
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12,
++ IMX6Q_GPR12_PCIE_CTL_2, 1 << 10);
++
++ while (!dw_pcie_link_up(pp)) {
++ usleep_range(100, 1000);
++ count++;
++ if (count >= 10) {
++ dev_err(pp->dev, "phy link never came up\n");
++ dev_dbg(pp->dev,
++ "DEBUG_R0: 0x%08x, DEBUG_R1: 0x%08x\n",
++ readl(pp->dbi_base + PCIE_PHY_DEBUG_R0),
++ readl(pp->dbi_base + PCIE_PHY_DEBUG_R1));
++ break;
++ }
++ }
++
++ return;
++}
++
++static int imx6_pcie_link_up(struct pcie_port *pp)
++{
++ u32 rc, ltssm, rx_valid, temp;
++
++ /* link is debug bit 36, debug register 1 starts at bit 32 */
++ rc = readl(pp->dbi_base + PCIE_PHY_DEBUG_R1) & (0x1 << (36 - 32));
++ if (rc)
++ return -EAGAIN;
++
++ /*
++ * From L0, initiate MAC entry to gen2 if EP/RC supports gen2.
++ * Wait 2ms (LTSSM timeout is 24ms, PHY lock is ~5us in gen2).
++ * If (MAC/LTSSM.state == Recovery.RcvrLock)
++ * && (PHY/rx_valid==0) then pulse PHY/rx_reset. Transition
++ * to gen2 is stuck
++ */
++ pcie_phy_read(pp->dbi_base, PCIE_PHY_RX_ASIC_OUT, &rx_valid);
++ ltssm = readl(pp->dbi_base + PCIE_PHY_DEBUG_R0) & 0x3F;
++
++ if (rx_valid & 0x01)
++ return 0;
++
++ if (ltssm != 0x0d)
++ return 0;
++
++ dev_err(pp->dev,
++ "transition to gen2 is stuck, reset PHY!\n");
++
++ pcie_phy_read(pp->dbi_base,
++ PHY_RX_OVRD_IN_LO, &temp);
++ temp |= (PHY_RX_OVRD_IN_LO_RX_DATA_EN
++ | PHY_RX_OVRD_IN_LO_RX_PLL_EN);
++ pcie_phy_write(pp->dbi_base,
++ PHY_RX_OVRD_IN_LO, temp);
++
++ usleep_range(2000, 3000);
++
++ pcie_phy_read(pp->dbi_base,
++ PHY_RX_OVRD_IN_LO, &temp);
++ temp &= ~(PHY_RX_OVRD_IN_LO_RX_DATA_EN
++ | PHY_RX_OVRD_IN_LO_RX_PLL_EN);
++ pcie_phy_write(pp->dbi_base,
++ PHY_RX_OVRD_IN_LO, temp);
++
++ return 0;
++}
++
++static struct pcie_host_ops imx6_pcie_host_ops = {
++ .link_up = imx6_pcie_link_up,
++ .host_init = imx6_pcie_host_init,
++};
++
++static int imx6_add_pcie_port(struct pcie_port *pp,
++ struct platform_device *pdev)
++{
++ int ret;
++
++ pp->irq = platform_get_irq(pdev, 0);
++ if (!pp->irq) {
++ dev_err(&pdev->dev, "failed to get irq\n");
++ return -ENODEV;
++ }
++
++ pp->root_bus_nr = -1;
++ pp->ops = &imx6_pcie_host_ops;
++
++ spin_lock_init(&pp->conf_lock);
++ ret = dw_pcie_host_init(pp);
++ if (ret) {
++ dev_err(&pdev->dev, "failed to initialize host\n");
++ return ret;
++ }
++
++ return 0;
++}
++
++static int __init imx6_pcie_probe(struct platform_device *pdev)
++{
++ struct imx6_pcie *imx6_pcie;
++ struct pcie_port *pp;
++ struct device_node *np = pdev->dev.of_node;
++ struct resource *dbi_base;
++ int ret;
++
++ imx6_pcie = devm_kzalloc(&pdev->dev, sizeof(*imx6_pcie), GFP_KERNEL);
++ if (!imx6_pcie)
++ return -ENOMEM;
++
++ pp = &imx6_pcie->pp;
++ pp->dev = &pdev->dev;
++
++ /* Added for PCI abort handling */
++ hook_fault_code(16 + 6, imx6q_pcie_abort_handler, SIGBUS, 0,
++ "imprecise external abort");
++
++ dbi_base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ if (!dbi_base) {
++ dev_err(&pdev->dev, "dbi_base memory resource not found\n");
++ return -ENODEV;
++ }
++
++ pp->dbi_base = devm_ioremap_resource(&pdev->dev, dbi_base);
++ if (IS_ERR(pp->dbi_base)) {
++ dev_err(&pdev->dev, "unable to remap dbi_base\n");
++ ret = PTR_ERR(pp->dbi_base);
++ goto err;
++ }
++
++ /* Fetch GPIOs */
++ imx6_pcie->reset_gpio = of_get_named_gpio(np, "reset-gpio", 0);
++ if (!gpio_is_valid(imx6_pcie->reset_gpio)) {
++ dev_err(&pdev->dev, "no reset-gpio defined\n");
++ ret = -ENODEV;
++ }
++ ret = devm_gpio_request_one(&pdev->dev,
++ imx6_pcie->reset_gpio,
++ GPIOF_OUT_INIT_LOW,
++ "PCIe reset");
++ if (ret) {
++ dev_err(&pdev->dev, "unable to get reset gpio\n");
++ goto err;
++ }
++
++ imx6_pcie->power_on_gpio = of_get_named_gpio(np, "power-on-gpio", 0);
++ if (gpio_is_valid(imx6_pcie->power_on_gpio)) {
++ ret = devm_gpio_request_one(&pdev->dev,
++ imx6_pcie->power_on_gpio,
++ GPIOF_OUT_INIT_LOW,
++ "PCIe power enable");
++ if (ret) {
++ dev_err(&pdev->dev, "unable to get power-on gpio\n");
++ goto err;
++ }
++ }
++
++ imx6_pcie->wake_up_gpio = of_get_named_gpio(np, "wake-up-gpio", 0);
++ if (gpio_is_valid(imx6_pcie->wake_up_gpio)) {
++ ret = devm_gpio_request_one(&pdev->dev,
++ imx6_pcie->wake_up_gpio,
++ GPIOF_IN,
++ "PCIe wake up");
++ if (ret) {
++ dev_err(&pdev->dev, "unable to get wake-up gpio\n");
++ goto err;
++ }
++ }
++
++ imx6_pcie->disable_gpio = of_get_named_gpio(np, "disable-gpio", 0);
++ if (gpio_is_valid(imx6_pcie->disable_gpio)) {
++ ret = devm_gpio_request_one(&pdev->dev,
++ imx6_pcie->disable_gpio,
++ GPIOF_OUT_INIT_HIGH,
++ "PCIe disable endpoint");
++ if (ret) {
++ dev_err(&pdev->dev, "unable to get disable-ep gpio\n");
++ goto err;
++ }
++ }
++
++ /* Fetch clocks */
++ imx6_pcie->lvds_gate = clk_get(&pdev->dev, "lvds_gate");
++ if (IS_ERR(imx6_pcie->lvds_gate)) {
++ dev_err(&pdev->dev,
++ "lvds_gate clock select missing or invalid\n");
++ ret = PTR_ERR(imx6_pcie->lvds_gate);
++ goto err;
++ }
++
++ imx6_pcie->sata_ref_100m = clk_get(&pdev->dev, "sata_ref_100m");
++ if (IS_ERR(imx6_pcie->sata_ref_100m)) {
++ dev_err(&pdev->dev,
++ "sata_ref_100m clock source missing or invalid\n");
++ ret = PTR_ERR(imx6_pcie->sata_ref_100m);
++ goto err;
++ }
++
++ imx6_pcie->pcie_ref_125m = clk_get(&pdev->dev, "pcie_ref_125m");
++ if (IS_ERR(imx6_pcie->pcie_ref_125m)) {
++ dev_err(&pdev->dev,
++ "pcie_ref_125m clock source missing or invalid\n");
++ ret = PTR_ERR(imx6_pcie->pcie_ref_125m);
++ goto err;
++ }
++
++ imx6_pcie->pcie_axi = clk_get(&pdev->dev, "pcie_axi");
++ if (IS_ERR(imx6_pcie->pcie_axi)) {
++ dev_err(&pdev->dev,
++ "pcie_axi clock source missing or invalid\n");
++ ret = PTR_ERR(imx6_pcie->pcie_axi);
++ goto err;
++ }
++
++ /* Grab GPR config register range */
++ imx6_pcie->iomuxc_gpr =
++ syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr");
++ if (IS_ERR(imx6_pcie->iomuxc_gpr)) {
++ dev_err(&pdev->dev, "unable to find iomuxc registers\n");
++ ret = PTR_ERR(imx6_pcie->iomuxc_gpr);
++ goto err;
++ }
++
++ ret = imx6_add_pcie_port(pp, pdev);
++ if (ret < 0)
++ goto err;
++
++ platform_set_drvdata(pdev, imx6_pcie);
++ return 0;
++
++err:
++ return ret;
++}
++
++static const struct of_device_id imx6_pcie_of_match[] = {
++ { .compatible = "fsl,imx6q-pcie", },
++ {},
++};
++MODULE_DEVICE_TABLE(of, imx6_pcie_of_match);
++
++static struct platform_driver imx6_pcie_driver = {
++ .driver = {
++ .name = "imx6q-pcie",
++ .owner = THIS_MODULE,
++ .of_match_table = of_match_ptr(imx6_pcie_of_match),
++ },
++};
++
++/* Freescale PCIe driver does not allow module unload */
++
++static int __init imx6_init(void)
++{
++ return platform_driver_probe(&imx6_pcie_driver, imx6_pcie_probe);
++}
++module_init(imx6_init);
++
++MODULE_AUTHOR("Sean Cross <xobs@kosagi.com>");
++MODULE_DESCRIPTION("Freescale i.MX6 PCIe host controller driver");
++MODULE_LICENSE("GPL v2");
--- /dev/null
+--- a/drivers/pci/Kconfig
++++ b/drivers/pci/Kconfig
+@@ -125,3 +125,5 @@ config PCI_IOAPIC
+ config PCI_LABEL
+ def_bool y if (DMI || ACPI)
+ select NLS
++
++source "drivers/pci/host/Kconfig"
+--- a/drivers/pci/Makefile
++++ b/drivers/pci/Makefile
+@@ -67,3 +67,6 @@ obj-$(CONFIG_XEN_PCIDEV_FRONTEND) += xen
+ obj-$(CONFIG_OF) += of.o
+
+ ccflags-$(CONFIG_PCI_DEBUG) := -DDEBUG
++
++# PCI host controller drivers
++obj-y += host/
--- /dev/null
+--- a/arch/arm/boot/dts/imx6qdl.dtsi
++++ b/arch/arm/boot/dts/imx6qdl.dtsi
+@@ -119,7 +119,7 @@
+ 0x82000000 0 0x01000000 0x01000000 0 0x00f00000>; /* non-prefetchable memory */
+ num-lanes = <1>;
+ interrupts = <0 123 0x04>;
+- clocks = <&clks 189>, <&clks 187>, <&clks 205>, <&clks 144>;
++ clocks = <&clks 189>, <&clks 187>, <&clks 198>, <&clks 144>;
+ clock-names = "pcie_ref_125m", "sata_ref_100m", "lvds_gate", "pcie_axi";
+ status = "disabled";
+ };
+--- a/drivers/pci/host/pci-imx6.c
++++ b/drivers/pci/host/pci-imx6.c
+@@ -200,12 +200,6 @@
+ static int imx6q_pcie_abort_handler(unsigned long addr,
+ unsigned int fsr, struct pt_regs *regs)
+ {
+- /*
+- * If it was an imprecise abort, then we need to correct the
+- * return address to be _after_ the instruction.
+- */
+- if (fsr & (1 << 10))
+- regs->ARM_pc += 4;
+ return 0;
+ }
+
+@@ -322,7 +316,7 @@
+ IMX6Q_GPR12_PCIE_CTL_2, 1 << 10);
+
+ while (!dw_pcie_link_up(pp)) {
+- usleep_range(100, 1000);
++ usleep_range(2000, 3000);
+ count++;
+ if (count >= 10) {
+ dev_err(pp->dev, "phy link never came up\n");
+++ /dev/null
---- a/arch/arm/boot/dts/imx6q.dtsi
-+++ b/arch/arm/boot/dts/imx6q.dtsi
-@@ -391,6 +391,15 @@
- status = "disabled";
- };
-
-+ pcie: pcie@01ffc000 {
-+ #crtc-cells = <1>;
-+ compatible = "fsl,imx6q-pcie", "fsl,pcie";
-+ reg = <0x01ffc000 0x4000>;
-+ clocks = <&clks 144>, <&clks 189>;
-+ clock-names = "pcie_axi", "pcie_ref_125m";
-+ status = "disabled";
-+ };
-+
- ipu2: ipu@02800000 {
- #crtc-cells = <1>;
- compatible = "fsl,imx6q-ipu";
---- a/arch/arm/mach-imx/Kconfig
-+++ b/arch/arm/mach-imx/Kconfig
-@@ -790,6 +790,8 @@ config SOC_IMX6Q
- bool "i.MX6 Quad/DualLite support"
- select ARCH_HAS_CPUFREQ
- select ARCH_HAS_OPP
-+ select ARCH_HAS_IMX_PCIE
-+ select ARCH_SUPPORTS_MSI
- select ARM_CPU_SUSPEND if PM
- select ARM_ERRATA_754322
- select ARM_ERRATA_764369 if SMP
-@@ -816,6 +818,10 @@ config SOC_IMX6Q
- help
- This enables support for Freescale i.MX6 Quad processor.
-
-+config IMX_PCIE
-+ bool "PCI Express support"
-+ select PCI
-+
- endif
-
- source "arch/arm/mach-imx/devices/Kconfig"
---- a/arch/arm/mach-imx/Makefile
-+++ b/arch/arm/mach-imx/Makefile
-@@ -98,6 +98,8 @@ AFLAGS_headsmp.o :=-Wa,-march=armv7-a
- obj-$(CONFIG_SMP) += headsmp.o platsmp.o
- obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
- obj-$(CONFIG_SOC_IMX6Q) += clk-imx6q.o mach-imx6q.o
-+obj-$(CONFIG_IMX_PCIE) += pcie.o
-+obj-$(CONFIG_PCI_MSI) += msi.o
-
- ifeq ($(CONFIG_PM),y)
- obj-$(CONFIG_SOC_IMX6Q) += pm-imx6q.o headsmp.o
---- a/arch/arm/mach-imx/clk-imx6q.c
-+++ b/arch/arm/mach-imx/clk-imx6q.c
-@@ -547,6 +547,12 @@ int __init mx6q_clocks_init(void)
- clk_register_clkdev(clk[ahb], "ahb", NULL);
- clk_register_clkdev(clk[cko1], "cko1", NULL);
- clk_register_clkdev(clk[arm], NULL, "cpu0");
-+ clk_register_clkdev(clk[pcie_axi_sel], "pcie_axi_sel", NULL);
-+ clk_register_clkdev(clk[axi], "axi", NULL);
-+ clk_register_clkdev(clk[pll6_enet], "pll6_enet", NULL);
-+ clk_register_clkdev(clk[pcie_ref], "pcie_ref", NULL);
-+ clk_register_clkdev(clk[pcie_ref_125m], "pcie_ref_125m", NULL);
-+ clk_register_clkdev(clk[pcie_axi], "pcie_axi", NULL);
-
- if (imx6q_revision() != IMX_CHIP_REVISION_1_0) {
- clk_set_parent(clk[ldb_di0_sel], clk[pll5_video_div]);
---- a/arch/arm/mach-imx/mxc.h
-+++ b/arch/arm/mach-imx/mxc.h
-@@ -151,6 +151,10 @@ extern unsigned int __mxc_cpu_type;
- # define cpu_is_mx53() (0)
- #endif
-
-+#ifdef CONFIG_SOC_IMX6Q
-+# define mxc_cpu_type __mxc_cpu_type
-+#endif
-+
- #ifndef __ASSEMBLY__
- static inline bool cpu_is_imx6dl(void)
- {
---- a/arch/arm/include/asm/io.h
-+++ b/arch/arm/include/asm/io.h
-@@ -178,6 +178,9 @@ extern int pci_ioremap_io(unsigned int o
- */
- #ifdef CONFIG_NEED_MACH_IO_H
- #include <mach/io.h>
-+#elif defined(CONFIG_SOC_IMX6Q) && defined(CONFIG_IMX_PCIE)
-+#define IO_SPACE_LIMIT ((resource_size_t)0xffffffff)
-+#define __io(a) __typesafe_io((a) & IO_SPACE_LIMIT)
- #elif defined(CONFIG_PCI)
- #define IO_SPACE_LIMIT ((resource_size_t)0xfffff)
- #define __io(a) __typesafe_io(PCI_IO_VIRT_BASE + ((a) & IO_SPACE_LIMIT))
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