From: Christian Marangi Date: Mon, 15 Jan 2024 18:53:06 +0000 (+0100) Subject: generic: 6.1: renumber MediaTek SGMII PCS patch X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=dfc29816c85086f3951e227651e3b28f73153f60;p=openwrt%2Fstaging%2Flinusw.git generic: 6.1: renumber MediaTek SGMII PCS patch Renumber MediaTek SGMII PCS patch to make space for upcoming at803x backport patches. Signed-off-by: Christian Marangi --- diff --git a/target/linux/generic/backport-6.1/707-v6.3-net-pcs-add-driver-for-MediaTek-SGMII-PCS.patch b/target/linux/generic/backport-6.1/707-v6.3-net-pcs-add-driver-for-MediaTek-SGMII-PCS.patch deleted file mode 100644 index 980cb0f914..0000000000 --- a/target/linux/generic/backport-6.1/707-v6.3-net-pcs-add-driver-for-MediaTek-SGMII-PCS.patch +++ /dev/null @@ -1,394 +0,0 @@ -From 4765a9722e09765866e131ec31f7b9cf4c1f4854 Mon Sep 17 00:00:00 2001 -From: Daniel Golle -Date: Sun, 19 Mar 2023 12:57:50 +0000 -Subject: [PATCH] net: pcs: add driver for MediaTek SGMII PCS - -The SGMII core found in several MediaTek SoCs is identical to what can -also be found in MediaTek's MT7531 Ethernet switch IC. -As this has not always been clear, both drivers developed different -implementations to deal with the PCS. -Recently Alexander Couzens pointed out this fact which lead to the -development of this shared driver. - -Add a dedicated driver, mostly by copying the code now found in the -Ethernet driver. The now redundant code will be removed by a follow-up -commit. - -Suggested-by: Alexander Couzens -Suggested-by: Russell King (Oracle) -Signed-off-by: Daniel Golle -Tested-by: Frank Wunderlich -Reviewed-by: Russell King (Oracle) -Signed-off-by: Jakub Kicinski ---- - MAINTAINERS | 8 + - drivers/net/pcs/Kconfig | 7 + - drivers/net/pcs/Makefile | 1 + - drivers/net/pcs/pcs-mtk-lynxi.c | 305 ++++++++++++++++++++++++++++++ - include/linux/pcs/pcs-mtk-lynxi.h | 13 ++ - 5 files changed, 334 insertions(+) - create mode 100644 drivers/net/pcs/pcs-mtk-lynxi.c - create mode 100644 include/linux/pcs/pcs-mtk-lynxi.h - ---- a/MAINTAINERS -+++ b/MAINTAINERS -@@ -12926,6 +12926,14 @@ L: netdev@vger.kernel.org - S: Maintained - F: drivers/net/ethernet/mediatek/ - -+MEDIATEK ETHERNET PCS DRIVER -+M: Alexander Couzens -+M: Daniel Golle -+L: netdev@vger.kernel.org -+S: Maintained -+F: drivers/net/pcs/pcs-mtk-lynxi.c -+F: include/linux/pcs/pcs-mtk-lynxi.h -+ - MEDIATEK I2C CONTROLLER DRIVER - M: Qii Wang - L: linux-i2c@vger.kernel.org ---- a/drivers/net/pcs/Kconfig -+++ b/drivers/net/pcs/Kconfig -@@ -32,4 +32,11 @@ config PCS_ALTERA_TSE - This module provides helper functions for the Altera Triple Speed - Ethernet SGMII PCS, that can be found on the Intel Socfpga family. - -+config PCS_MTK_LYNXI -+ tristate -+ select REGMAP -+ help -+ This module provides helpers to phylink for managing the LynxI PCS -+ which is part of MediaTek's SoC and Ethernet switch ICs. -+ - endmenu ---- a/drivers/net/pcs/Makefile -+++ b/drivers/net/pcs/Makefile -@@ -7,3 +7,4 @@ obj-$(CONFIG_PCS_XPCS) += pcs_xpcs.o - obj-$(CONFIG_PCS_LYNX) += pcs-lynx.o - obj-$(CONFIG_PCS_RZN1_MIIC) += pcs-rzn1-miic.o - obj-$(CONFIG_PCS_ALTERA_TSE) += pcs-altera-tse.o -+obj-$(CONFIG_PCS_MTK_LYNXI) += pcs-mtk-lynxi.o ---- /dev/null -+++ b/drivers/net/pcs/pcs-mtk-lynxi.c -@@ -0,0 +1,305 @@ -+// SPDX-License-Identifier: GPL-2.0 -+// Copyright (c) 2018-2019 MediaTek Inc. -+/* A library for MediaTek SGMII circuit -+ * -+ * Author: Sean Wang -+ * Author: Alexander Couzens -+ * Author: Daniel Golle -+ * -+ */ -+ -+#include -+#include -+#include -+#include -+#include -+ -+/* SGMII subsystem config registers */ -+/* BMCR (low 16) BMSR (high 16) */ -+#define SGMSYS_PCS_CONTROL_1 0x0 -+#define SGMII_BMCR GENMASK(15, 0) -+#define SGMII_BMSR GENMASK(31, 16) -+ -+#define SGMSYS_PCS_DEVICE_ID 0x4 -+#define SGMII_LYNXI_DEV_ID 0x4d544950 -+ -+#define SGMSYS_PCS_ADVERTISE 0x8 -+#define SGMII_ADVERTISE GENMASK(15, 0) -+#define SGMII_LPA GENMASK(31, 16) -+ -+#define SGMSYS_PCS_SCRATCH 0x14 -+#define SGMII_DEV_VERSION GENMASK(31, 16) -+ -+/* Register to programmable link timer, the unit in 2 * 8ns */ -+#define SGMSYS_PCS_LINK_TIMER 0x18 -+#define SGMII_LINK_TIMER_MASK GENMASK(19, 0) -+#define SGMII_LINK_TIMER_VAL(ns) FIELD_PREP(SGMII_LINK_TIMER_MASK, \ -+ ((ns) / 2 / 8)) -+ -+/* Register to control remote fault */ -+#define SGMSYS_SGMII_MODE 0x20 -+#define SGMII_IF_MODE_SGMII BIT(0) -+#define SGMII_SPEED_DUPLEX_AN BIT(1) -+#define SGMII_SPEED_MASK GENMASK(3, 2) -+#define SGMII_SPEED_10 FIELD_PREP(SGMII_SPEED_MASK, 0) -+#define SGMII_SPEED_100 FIELD_PREP(SGMII_SPEED_MASK, 1) -+#define SGMII_SPEED_1000 FIELD_PREP(SGMII_SPEED_MASK, 2) -+#define SGMII_DUPLEX_HALF BIT(4) -+#define SGMII_REMOTE_FAULT_DIS BIT(8) -+ -+/* Register to reset SGMII design */ -+#define SGMSYS_RESERVED_0 0x34 -+#define SGMII_SW_RESET BIT(0) -+ -+/* Register to set SGMII speed, ANA RG_ Control Signals III */ -+#define SGMII_PHY_SPEED_MASK GENMASK(3, 2) -+#define SGMII_PHY_SPEED_1_25G FIELD_PREP(SGMII_PHY_SPEED_MASK, 0) -+#define SGMII_PHY_SPEED_3_125G FIELD_PREP(SGMII_PHY_SPEED_MASK, 1) -+ -+/* Register to power up QPHY */ -+#define SGMSYS_QPHY_PWR_STATE_CTRL 0xe8 -+#define SGMII_PHYA_PWD BIT(4) -+ -+/* Register to QPHY wrapper control */ -+#define SGMSYS_QPHY_WRAP_CTRL 0xec -+#define SGMII_PN_SWAP_MASK GENMASK(1, 0) -+#define SGMII_PN_SWAP_TX_RX (BIT(0) | BIT(1)) -+ -+/* struct mtk_pcs_lynxi - This structure holds each sgmii regmap andassociated -+ * data -+ * @regmap: The register map pointing at the range used to setup -+ * SGMII modes -+ * @dev: Pointer to device owning the PCS -+ * @ana_rgc3: The offset of register ANA_RGC3 relative to regmap -+ * @interface: Currently configured interface mode -+ * @pcs: Phylink PCS structure -+ * @flags: Flags indicating hardware properties -+ */ -+struct mtk_pcs_lynxi { -+ struct regmap *regmap; -+ u32 ana_rgc3; -+ phy_interface_t interface; -+ struct phylink_pcs pcs; -+ u32 flags; -+}; -+ -+static struct mtk_pcs_lynxi *pcs_to_mtk_pcs_lynxi(struct phylink_pcs *pcs) -+{ -+ return container_of(pcs, struct mtk_pcs_lynxi, pcs); -+} -+ -+static void mtk_pcs_lynxi_get_state(struct phylink_pcs *pcs, -+ struct phylink_link_state *state) -+{ -+ struct mtk_pcs_lynxi *mpcs = pcs_to_mtk_pcs_lynxi(pcs); -+ unsigned int bm, adv; -+ -+ /* Read the BMSR and LPA */ -+ regmap_read(mpcs->regmap, SGMSYS_PCS_CONTROL_1, &bm); -+ regmap_read(mpcs->regmap, SGMSYS_PCS_ADVERTISE, &adv); -+ -+ phylink_mii_c22_pcs_decode_state(state, FIELD_GET(SGMII_BMSR, bm), -+ FIELD_GET(SGMII_LPA, adv)); -+} -+ -+static int mtk_pcs_lynxi_config(struct phylink_pcs *pcs, unsigned int mode, -+ phy_interface_t interface, -+ const unsigned long *advertising, -+ bool permit_pause_to_mac) -+{ -+ struct mtk_pcs_lynxi *mpcs = pcs_to_mtk_pcs_lynxi(pcs); -+ bool mode_changed = false, changed, use_an; -+ unsigned int rgc3, sgm_mode, bmcr; -+ int advertise, link_timer; -+ -+ advertise = phylink_mii_c22_pcs_encode_advertisement(interface, -+ advertising); -+ if (advertise < 0) -+ return advertise; -+ -+ /* Clearing IF_MODE_BIT0 switches the PCS to BASE-X mode, and -+ * we assume that fixes it's speed at bitrate = line rate (in -+ * other words, 1000Mbps or 2500Mbps). -+ */ -+ if (interface == PHY_INTERFACE_MODE_SGMII) { -+ sgm_mode = SGMII_IF_MODE_SGMII; -+ if (phylink_autoneg_inband(mode)) { -+ sgm_mode |= SGMII_REMOTE_FAULT_DIS | -+ SGMII_SPEED_DUPLEX_AN; -+ use_an = true; -+ } else { -+ use_an = false; -+ } -+ } else if (phylink_autoneg_inband(mode)) { -+ /* 1000base-X or 2500base-X autoneg */ -+ sgm_mode = SGMII_REMOTE_FAULT_DIS; -+ use_an = linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, -+ advertising); -+ } else { -+ /* 1000base-X or 2500base-X without autoneg */ -+ sgm_mode = 0; -+ use_an = false; -+ } -+ -+ if (use_an) -+ bmcr = BMCR_ANENABLE; -+ else -+ bmcr = 0; -+ -+ if (mpcs->interface != interface) { -+ link_timer = phylink_get_link_timer_ns(interface); -+ if (link_timer < 0) -+ return link_timer; -+ -+ /* PHYA power down */ -+ regmap_set_bits(mpcs->regmap, SGMSYS_QPHY_PWR_STATE_CTRL, -+ SGMII_PHYA_PWD); -+ -+ /* Reset SGMII PCS state */ -+ regmap_set_bits(mpcs->regmap, SGMSYS_RESERVED_0, -+ SGMII_SW_RESET); -+ -+ if (mpcs->flags & MTK_SGMII_FLAG_PN_SWAP) -+ regmap_update_bits(mpcs->regmap, SGMSYS_QPHY_WRAP_CTRL, -+ SGMII_PN_SWAP_MASK, -+ SGMII_PN_SWAP_TX_RX); -+ -+ if (interface == PHY_INTERFACE_MODE_2500BASEX) -+ rgc3 = SGMII_PHY_SPEED_3_125G; -+ else -+ rgc3 = SGMII_PHY_SPEED_1_25G; -+ -+ /* Configure the underlying interface speed */ -+ regmap_update_bits(mpcs->regmap, mpcs->ana_rgc3, -+ SGMII_PHY_SPEED_MASK, rgc3); -+ -+ /* Setup the link timer */ -+ regmap_write(mpcs->regmap, SGMSYS_PCS_LINK_TIMER, -+ SGMII_LINK_TIMER_VAL(link_timer)); -+ -+ mpcs->interface = interface; -+ mode_changed = true; -+ } -+ -+ /* Update the advertisement, noting whether it has changed */ -+ regmap_update_bits_check(mpcs->regmap, SGMSYS_PCS_ADVERTISE, -+ SGMII_ADVERTISE, advertise, &changed); -+ -+ /* Update the sgmsys mode register */ -+ regmap_update_bits(mpcs->regmap, SGMSYS_SGMII_MODE, -+ SGMII_REMOTE_FAULT_DIS | SGMII_SPEED_DUPLEX_AN | -+ SGMII_IF_MODE_SGMII, sgm_mode); -+ -+ /* Update the BMCR */ -+ regmap_update_bits(mpcs->regmap, SGMSYS_PCS_CONTROL_1, -+ BMCR_ANENABLE, bmcr); -+ -+ /* Release PHYA power down state -+ * Only removing bit SGMII_PHYA_PWD isn't enough. -+ * There are cases when the SGMII_PHYA_PWD register contains 0x9 which -+ * prevents SGMII from working. The SGMII still shows link but no traffic -+ * can flow. Writing 0x0 to the PHYA_PWD register fix the issue. 0x0 was -+ * taken from a good working state of the SGMII interface. -+ * Unknown how much the QPHY needs but it is racy without a sleep. -+ * Tested on mt7622 & mt7986. -+ */ -+ usleep_range(50, 100); -+ regmap_write(mpcs->regmap, SGMSYS_QPHY_PWR_STATE_CTRL, 0); -+ -+ return changed || mode_changed; -+} -+ -+static void mtk_pcs_lynxi_restart_an(struct phylink_pcs *pcs) -+{ -+ struct mtk_pcs_lynxi *mpcs = pcs_to_mtk_pcs_lynxi(pcs); -+ -+ regmap_set_bits(mpcs->regmap, SGMSYS_PCS_CONTROL_1, BMCR_ANRESTART); -+} -+ -+static void mtk_pcs_lynxi_link_up(struct phylink_pcs *pcs, unsigned int mode, -+ phy_interface_t interface, int speed, -+ int duplex) -+{ -+ struct mtk_pcs_lynxi *mpcs = pcs_to_mtk_pcs_lynxi(pcs); -+ unsigned int sgm_mode; -+ -+ if (!phylink_autoneg_inband(mode)) { -+ /* Force the speed and duplex setting */ -+ if (speed == SPEED_10) -+ sgm_mode = SGMII_SPEED_10; -+ else if (speed == SPEED_100) -+ sgm_mode = SGMII_SPEED_100; -+ else -+ sgm_mode = SGMII_SPEED_1000; -+ -+ if (duplex != DUPLEX_FULL) -+ sgm_mode |= SGMII_DUPLEX_HALF; -+ -+ regmap_update_bits(mpcs->regmap, SGMSYS_SGMII_MODE, -+ SGMII_DUPLEX_HALF | SGMII_SPEED_MASK, -+ sgm_mode); -+ } -+} -+ -+static const struct phylink_pcs_ops mtk_pcs_lynxi_ops = { -+ .pcs_get_state = mtk_pcs_lynxi_get_state, -+ .pcs_config = mtk_pcs_lynxi_config, -+ .pcs_an_restart = mtk_pcs_lynxi_restart_an, -+ .pcs_link_up = mtk_pcs_lynxi_link_up, -+}; -+ -+struct phylink_pcs *mtk_pcs_lynxi_create(struct device *dev, -+ struct regmap *regmap, u32 ana_rgc3, -+ u32 flags) -+{ -+ struct mtk_pcs_lynxi *mpcs; -+ u32 id, ver; -+ int ret; -+ -+ ret = regmap_read(regmap, SGMSYS_PCS_DEVICE_ID, &id); -+ if (ret < 0) -+ return NULL; -+ -+ if (id != SGMII_LYNXI_DEV_ID) { -+ dev_err(dev, "unknown PCS device id %08x\n", id); -+ return NULL; -+ } -+ -+ ret = regmap_read(regmap, SGMSYS_PCS_SCRATCH, &ver); -+ if (ret < 0) -+ return NULL; -+ -+ ver = FIELD_GET(SGMII_DEV_VERSION, ver); -+ if (ver != 0x1) { -+ dev_err(dev, "unknown PCS device version %04x\n", ver); -+ return NULL; -+ } -+ -+ dev_dbg(dev, "MediaTek LynxI SGMII PCS (id 0x%08x, ver 0x%04x)\n", id, -+ ver); -+ -+ mpcs = kzalloc(sizeof(*mpcs), GFP_KERNEL); -+ if (!mpcs) -+ return NULL; -+ -+ mpcs->ana_rgc3 = ana_rgc3; -+ mpcs->regmap = regmap; -+ mpcs->flags = flags; -+ mpcs->pcs.ops = &mtk_pcs_lynxi_ops; -+ mpcs->pcs.poll = true; -+ mpcs->interface = PHY_INTERFACE_MODE_NA; -+ -+ return &mpcs->pcs; -+} -+EXPORT_SYMBOL(mtk_pcs_lynxi_create); -+ -+void mtk_pcs_lynxi_destroy(struct phylink_pcs *pcs) -+{ -+ if (!pcs) -+ return; -+ -+ kfree(pcs_to_mtk_pcs_lynxi(pcs)); -+} -+EXPORT_SYMBOL(mtk_pcs_lynxi_destroy); -+ -+MODULE_LICENSE("GPL"); ---- /dev/null -+++ b/include/linux/pcs/pcs-mtk-lynxi.h -@@ -0,0 +1,13 @@ -+/* SPDX-License-Identifier: GPL-2.0 */ -+#ifndef __LINUX_PCS_MTK_LYNXI_H -+#define __LINUX_PCS_MTK_LYNXI_H -+ -+#include -+#include -+ -+#define MTK_SGMII_FLAG_PN_SWAP BIT(0) -+struct phylink_pcs *mtk_pcs_lynxi_create(struct device *dev, -+ struct regmap *regmap, -+ u32 ana_rgc3, u32 flags); -+void mtk_pcs_lynxi_destroy(struct phylink_pcs *pcs); -+#endif diff --git a/target/linux/generic/backport-6.1/723-v6.3-net-pcs-add-driver-for-MediaTek-SGMII-PCS.patch b/target/linux/generic/backport-6.1/723-v6.3-net-pcs-add-driver-for-MediaTek-SGMII-PCS.patch new file mode 100644 index 0000000000..980cb0f914 --- /dev/null +++ b/target/linux/generic/backport-6.1/723-v6.3-net-pcs-add-driver-for-MediaTek-SGMII-PCS.patch @@ -0,0 +1,394 @@ +From 4765a9722e09765866e131ec31f7b9cf4c1f4854 Mon Sep 17 00:00:00 2001 +From: Daniel Golle +Date: Sun, 19 Mar 2023 12:57:50 +0000 +Subject: [PATCH] net: pcs: add driver for MediaTek SGMII PCS + +The SGMII core found in several MediaTek SoCs is identical to what can +also be found in MediaTek's MT7531 Ethernet switch IC. +As this has not always been clear, both drivers developed different +implementations to deal with the PCS. +Recently Alexander Couzens pointed out this fact which lead to the +development of this shared driver. + +Add a dedicated driver, mostly by copying the code now found in the +Ethernet driver. The now redundant code will be removed by a follow-up +commit. + +Suggested-by: Alexander Couzens +Suggested-by: Russell King (Oracle) +Signed-off-by: Daniel Golle +Tested-by: Frank Wunderlich +Reviewed-by: Russell King (Oracle) +Signed-off-by: Jakub Kicinski +--- + MAINTAINERS | 8 + + drivers/net/pcs/Kconfig | 7 + + drivers/net/pcs/Makefile | 1 + + drivers/net/pcs/pcs-mtk-lynxi.c | 305 ++++++++++++++++++++++++++++++ + include/linux/pcs/pcs-mtk-lynxi.h | 13 ++ + 5 files changed, 334 insertions(+) + create mode 100644 drivers/net/pcs/pcs-mtk-lynxi.c + create mode 100644 include/linux/pcs/pcs-mtk-lynxi.h + +--- a/MAINTAINERS ++++ b/MAINTAINERS +@@ -12926,6 +12926,14 @@ L: netdev@vger.kernel.org + S: Maintained + F: drivers/net/ethernet/mediatek/ + ++MEDIATEK ETHERNET PCS DRIVER ++M: Alexander Couzens ++M: Daniel Golle ++L: netdev@vger.kernel.org ++S: Maintained ++F: drivers/net/pcs/pcs-mtk-lynxi.c ++F: include/linux/pcs/pcs-mtk-lynxi.h ++ + MEDIATEK I2C CONTROLLER DRIVER + M: Qii Wang + L: linux-i2c@vger.kernel.org +--- a/drivers/net/pcs/Kconfig ++++ b/drivers/net/pcs/Kconfig +@@ -32,4 +32,11 @@ config PCS_ALTERA_TSE + This module provides helper functions for the Altera Triple Speed + Ethernet SGMII PCS, that can be found on the Intel Socfpga family. + ++config PCS_MTK_LYNXI ++ tristate ++ select REGMAP ++ help ++ This module provides helpers to phylink for managing the LynxI PCS ++ which is part of MediaTek's SoC and Ethernet switch ICs. ++ + endmenu +--- a/drivers/net/pcs/Makefile ++++ b/drivers/net/pcs/Makefile +@@ -7,3 +7,4 @@ obj-$(CONFIG_PCS_XPCS) += pcs_xpcs.o + obj-$(CONFIG_PCS_LYNX) += pcs-lynx.o + obj-$(CONFIG_PCS_RZN1_MIIC) += pcs-rzn1-miic.o + obj-$(CONFIG_PCS_ALTERA_TSE) += pcs-altera-tse.o ++obj-$(CONFIG_PCS_MTK_LYNXI) += pcs-mtk-lynxi.o +--- /dev/null ++++ b/drivers/net/pcs/pcs-mtk-lynxi.c +@@ -0,0 +1,305 @@ ++// SPDX-License-Identifier: GPL-2.0 ++// Copyright (c) 2018-2019 MediaTek Inc. ++/* A library for MediaTek SGMII circuit ++ * ++ * Author: Sean Wang ++ * Author: Alexander Couzens ++ * Author: Daniel Golle ++ * ++ */ ++ ++#include ++#include ++#include ++#include ++#include ++ ++/* SGMII subsystem config registers */ ++/* BMCR (low 16) BMSR (high 16) */ ++#define SGMSYS_PCS_CONTROL_1 0x0 ++#define SGMII_BMCR GENMASK(15, 0) ++#define SGMII_BMSR GENMASK(31, 16) ++ ++#define SGMSYS_PCS_DEVICE_ID 0x4 ++#define SGMII_LYNXI_DEV_ID 0x4d544950 ++ ++#define SGMSYS_PCS_ADVERTISE 0x8 ++#define SGMII_ADVERTISE GENMASK(15, 0) ++#define SGMII_LPA GENMASK(31, 16) ++ ++#define SGMSYS_PCS_SCRATCH 0x14 ++#define SGMII_DEV_VERSION GENMASK(31, 16) ++ ++/* Register to programmable link timer, the unit in 2 * 8ns */ ++#define SGMSYS_PCS_LINK_TIMER 0x18 ++#define SGMII_LINK_TIMER_MASK GENMASK(19, 0) ++#define SGMII_LINK_TIMER_VAL(ns) FIELD_PREP(SGMII_LINK_TIMER_MASK, \ ++ ((ns) / 2 / 8)) ++ ++/* Register to control remote fault */ ++#define SGMSYS_SGMII_MODE 0x20 ++#define SGMII_IF_MODE_SGMII BIT(0) ++#define SGMII_SPEED_DUPLEX_AN BIT(1) ++#define SGMII_SPEED_MASK GENMASK(3, 2) ++#define SGMII_SPEED_10 FIELD_PREP(SGMII_SPEED_MASK, 0) ++#define SGMII_SPEED_100 FIELD_PREP(SGMII_SPEED_MASK, 1) ++#define SGMII_SPEED_1000 FIELD_PREP(SGMII_SPEED_MASK, 2) ++#define SGMII_DUPLEX_HALF BIT(4) ++#define SGMII_REMOTE_FAULT_DIS BIT(8) ++ ++/* Register to reset SGMII design */ ++#define SGMSYS_RESERVED_0 0x34 ++#define SGMII_SW_RESET BIT(0) ++ ++/* Register to set SGMII speed, ANA RG_ Control Signals III */ ++#define SGMII_PHY_SPEED_MASK GENMASK(3, 2) ++#define SGMII_PHY_SPEED_1_25G FIELD_PREP(SGMII_PHY_SPEED_MASK, 0) ++#define SGMII_PHY_SPEED_3_125G FIELD_PREP(SGMII_PHY_SPEED_MASK, 1) ++ ++/* Register to power up QPHY */ ++#define SGMSYS_QPHY_PWR_STATE_CTRL 0xe8 ++#define SGMII_PHYA_PWD BIT(4) ++ ++/* Register to QPHY wrapper control */ ++#define SGMSYS_QPHY_WRAP_CTRL 0xec ++#define SGMII_PN_SWAP_MASK GENMASK(1, 0) ++#define SGMII_PN_SWAP_TX_RX (BIT(0) | BIT(1)) ++ ++/* struct mtk_pcs_lynxi - This structure holds each sgmii regmap andassociated ++ * data ++ * @regmap: The register map pointing at the range used to setup ++ * SGMII modes ++ * @dev: Pointer to device owning the PCS ++ * @ana_rgc3: The offset of register ANA_RGC3 relative to regmap ++ * @interface: Currently configured interface mode ++ * @pcs: Phylink PCS structure ++ * @flags: Flags indicating hardware properties ++ */ ++struct mtk_pcs_lynxi { ++ struct regmap *regmap; ++ u32 ana_rgc3; ++ phy_interface_t interface; ++ struct phylink_pcs pcs; ++ u32 flags; ++}; ++ ++static struct mtk_pcs_lynxi *pcs_to_mtk_pcs_lynxi(struct phylink_pcs *pcs) ++{ ++ return container_of(pcs, struct mtk_pcs_lynxi, pcs); ++} ++ ++static void mtk_pcs_lynxi_get_state(struct phylink_pcs *pcs, ++ struct phylink_link_state *state) ++{ ++ struct mtk_pcs_lynxi *mpcs = pcs_to_mtk_pcs_lynxi(pcs); ++ unsigned int bm, adv; ++ ++ /* Read the BMSR and LPA */ ++ regmap_read(mpcs->regmap, SGMSYS_PCS_CONTROL_1, &bm); ++ regmap_read(mpcs->regmap, SGMSYS_PCS_ADVERTISE, &adv); ++ ++ phylink_mii_c22_pcs_decode_state(state, FIELD_GET(SGMII_BMSR, bm), ++ FIELD_GET(SGMII_LPA, adv)); ++} ++ ++static int mtk_pcs_lynxi_config(struct phylink_pcs *pcs, unsigned int mode, ++ phy_interface_t interface, ++ const unsigned long *advertising, ++ bool permit_pause_to_mac) ++{ ++ struct mtk_pcs_lynxi *mpcs = pcs_to_mtk_pcs_lynxi(pcs); ++ bool mode_changed = false, changed, use_an; ++ unsigned int rgc3, sgm_mode, bmcr; ++ int advertise, link_timer; ++ ++ advertise = phylink_mii_c22_pcs_encode_advertisement(interface, ++ advertising); ++ if (advertise < 0) ++ return advertise; ++ ++ /* Clearing IF_MODE_BIT0 switches the PCS to BASE-X mode, and ++ * we assume that fixes it's speed at bitrate = line rate (in ++ * other words, 1000Mbps or 2500Mbps). ++ */ ++ if (interface == PHY_INTERFACE_MODE_SGMII) { ++ sgm_mode = SGMII_IF_MODE_SGMII; ++ if (phylink_autoneg_inband(mode)) { ++ sgm_mode |= SGMII_REMOTE_FAULT_DIS | ++ SGMII_SPEED_DUPLEX_AN; ++ use_an = true; ++ } else { ++ use_an = false; ++ } ++ } else if (phylink_autoneg_inband(mode)) { ++ /* 1000base-X or 2500base-X autoneg */ ++ sgm_mode = SGMII_REMOTE_FAULT_DIS; ++ use_an = linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, ++ advertising); ++ } else { ++ /* 1000base-X or 2500base-X without autoneg */ ++ sgm_mode = 0; ++ use_an = false; ++ } ++ ++ if (use_an) ++ bmcr = BMCR_ANENABLE; ++ else ++ bmcr = 0; ++ ++ if (mpcs->interface != interface) { ++ link_timer = phylink_get_link_timer_ns(interface); ++ if (link_timer < 0) ++ return link_timer; ++ ++ /* PHYA power down */ ++ regmap_set_bits(mpcs->regmap, SGMSYS_QPHY_PWR_STATE_CTRL, ++ SGMII_PHYA_PWD); ++ ++ /* Reset SGMII PCS state */ ++ regmap_set_bits(mpcs->regmap, SGMSYS_RESERVED_0, ++ SGMII_SW_RESET); ++ ++ if (mpcs->flags & MTK_SGMII_FLAG_PN_SWAP) ++ regmap_update_bits(mpcs->regmap, SGMSYS_QPHY_WRAP_CTRL, ++ SGMII_PN_SWAP_MASK, ++ SGMII_PN_SWAP_TX_RX); ++ ++ if (interface == PHY_INTERFACE_MODE_2500BASEX) ++ rgc3 = SGMII_PHY_SPEED_3_125G; ++ else ++ rgc3 = SGMII_PHY_SPEED_1_25G; ++ ++ /* Configure the underlying interface speed */ ++ regmap_update_bits(mpcs->regmap, mpcs->ana_rgc3, ++ SGMII_PHY_SPEED_MASK, rgc3); ++ ++ /* Setup the link timer */ ++ regmap_write(mpcs->regmap, SGMSYS_PCS_LINK_TIMER, ++ SGMII_LINK_TIMER_VAL(link_timer)); ++ ++ mpcs->interface = interface; ++ mode_changed = true; ++ } ++ ++ /* Update the advertisement, noting whether it has changed */ ++ regmap_update_bits_check(mpcs->regmap, SGMSYS_PCS_ADVERTISE, ++ SGMII_ADVERTISE, advertise, &changed); ++ ++ /* Update the sgmsys mode register */ ++ regmap_update_bits(mpcs->regmap, SGMSYS_SGMII_MODE, ++ SGMII_REMOTE_FAULT_DIS | SGMII_SPEED_DUPLEX_AN | ++ SGMII_IF_MODE_SGMII, sgm_mode); ++ ++ /* Update the BMCR */ ++ regmap_update_bits(mpcs->regmap, SGMSYS_PCS_CONTROL_1, ++ BMCR_ANENABLE, bmcr); ++ ++ /* Release PHYA power down state ++ * Only removing bit SGMII_PHYA_PWD isn't enough. ++ * There are cases when the SGMII_PHYA_PWD register contains 0x9 which ++ * prevents SGMII from working. The SGMII still shows link but no traffic ++ * can flow. Writing 0x0 to the PHYA_PWD register fix the issue. 0x0 was ++ * taken from a good working state of the SGMII interface. ++ * Unknown how much the QPHY needs but it is racy without a sleep. ++ * Tested on mt7622 & mt7986. ++ */ ++ usleep_range(50, 100); ++ regmap_write(mpcs->regmap, SGMSYS_QPHY_PWR_STATE_CTRL, 0); ++ ++ return changed || mode_changed; ++} ++ ++static void mtk_pcs_lynxi_restart_an(struct phylink_pcs *pcs) ++{ ++ struct mtk_pcs_lynxi *mpcs = pcs_to_mtk_pcs_lynxi(pcs); ++ ++ regmap_set_bits(mpcs->regmap, SGMSYS_PCS_CONTROL_1, BMCR_ANRESTART); ++} ++ ++static void mtk_pcs_lynxi_link_up(struct phylink_pcs *pcs, unsigned int mode, ++ phy_interface_t interface, int speed, ++ int duplex) ++{ ++ struct mtk_pcs_lynxi *mpcs = pcs_to_mtk_pcs_lynxi(pcs); ++ unsigned int sgm_mode; ++ ++ if (!phylink_autoneg_inband(mode)) { ++ /* Force the speed and duplex setting */ ++ if (speed == SPEED_10) ++ sgm_mode = SGMII_SPEED_10; ++ else if (speed == SPEED_100) ++ sgm_mode = SGMII_SPEED_100; ++ else ++ sgm_mode = SGMII_SPEED_1000; ++ ++ if (duplex != DUPLEX_FULL) ++ sgm_mode |= SGMII_DUPLEX_HALF; ++ ++ regmap_update_bits(mpcs->regmap, SGMSYS_SGMII_MODE, ++ SGMII_DUPLEX_HALF | SGMII_SPEED_MASK, ++ sgm_mode); ++ } ++} ++ ++static const struct phylink_pcs_ops mtk_pcs_lynxi_ops = { ++ .pcs_get_state = mtk_pcs_lynxi_get_state, ++ .pcs_config = mtk_pcs_lynxi_config, ++ .pcs_an_restart = mtk_pcs_lynxi_restart_an, ++ .pcs_link_up = mtk_pcs_lynxi_link_up, ++}; ++ ++struct phylink_pcs *mtk_pcs_lynxi_create(struct device *dev, ++ struct regmap *regmap, u32 ana_rgc3, ++ u32 flags) ++{ ++ struct mtk_pcs_lynxi *mpcs; ++ u32 id, ver; ++ int ret; ++ ++ ret = regmap_read(regmap, SGMSYS_PCS_DEVICE_ID, &id); ++ if (ret < 0) ++ return NULL; ++ ++ if (id != SGMII_LYNXI_DEV_ID) { ++ dev_err(dev, "unknown PCS device id %08x\n", id); ++ return NULL; ++ } ++ ++ ret = regmap_read(regmap, SGMSYS_PCS_SCRATCH, &ver); ++ if (ret < 0) ++ return NULL; ++ ++ ver = FIELD_GET(SGMII_DEV_VERSION, ver); ++ if (ver != 0x1) { ++ dev_err(dev, "unknown PCS device version %04x\n", ver); ++ return NULL; ++ } ++ ++ dev_dbg(dev, "MediaTek LynxI SGMII PCS (id 0x%08x, ver 0x%04x)\n", id, ++ ver); ++ ++ mpcs = kzalloc(sizeof(*mpcs), GFP_KERNEL); ++ if (!mpcs) ++ return NULL; ++ ++ mpcs->ana_rgc3 = ana_rgc3; ++ mpcs->regmap = regmap; ++ mpcs->flags = flags; ++ mpcs->pcs.ops = &mtk_pcs_lynxi_ops; ++ mpcs->pcs.poll = true; ++ mpcs->interface = PHY_INTERFACE_MODE_NA; ++ ++ return &mpcs->pcs; ++} ++EXPORT_SYMBOL(mtk_pcs_lynxi_create); ++ ++void mtk_pcs_lynxi_destroy(struct phylink_pcs *pcs) ++{ ++ if (!pcs) ++ return; ++ ++ kfree(pcs_to_mtk_pcs_lynxi(pcs)); ++} ++EXPORT_SYMBOL(mtk_pcs_lynxi_destroy); ++ ++MODULE_LICENSE("GPL"); +--- /dev/null ++++ b/include/linux/pcs/pcs-mtk-lynxi.h +@@ -0,0 +1,13 @@ ++/* SPDX-License-Identifier: GPL-2.0 */ ++#ifndef __LINUX_PCS_MTK_LYNXI_H ++#define __LINUX_PCS_MTK_LYNXI_H ++ ++#include ++#include ++ ++#define MTK_SGMII_FLAG_PN_SWAP BIT(0) ++struct phylink_pcs *mtk_pcs_lynxi_create(struct device *dev, ++ struct regmap *regmap, ++ u32 ana_rgc3, u32 flags); ++void mtk_pcs_lynxi_destroy(struct phylink_pcs *pcs); ++#endif