+++ /dev/null
-From 5a079515cb3066aeb658634301a98871b47c2af4 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
-Date: Thu, 25 Feb 2021 19:44:22 +0100
-Subject: [PATCH 1/4] mips: bmips: add BCM63268 timer clock definitions
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Add missing timer clock definitions for BCM63268.
-
-Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
----
- include/dt-bindings/clock/bcm63268-clock.h | 13 +++++++++++++
- 1 file changed, 13 insertions(+)
-
---- a/include/dt-bindings/clock/bcm63268-clock.h
-+++ b/include/dt-bindings/clock/bcm63268-clock.h
-@@ -27,4 +27,17 @@
- #define BCM63268_CLK_TBUS 27
- #define BCM63268_CLK_ROBOSW250 31
-
-+#define BCM63268_TCLK_EPHY1 0
-+#define BCM63268_TCLK_EPHY2 1
-+#define BCM63268_TCLK_EPHY3 2
-+#define BCM63268_TCLK_GPHY1 3
-+#define BCM63268_TCLK_DSL 4
-+#define BCM63268_TCLK_WAKEON_EPHY 6
-+#define BCM63268_TCLK_WAKEON_DSL 7
-+#define BCM63268_TCLK_FAP1 11
-+#define BCM63268_TCLK_FAP2 15
-+#define BCM63268_TCLK_UTO_50 16
-+#define BCM63268_TCLK_UTO_EXTIN 17
-+#define BCM63268_TCLK_USB_REF 18
-+
- #endif /* __DT_BINDINGS_CLOCK_BCM63268_H */
+++ /dev/null
-From 3327df17635dd9d24a855ac6b7247fac381514cf Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
-Date: Thu, 25 Feb 2021 19:45:04 +0100
-Subject: [PATCH 2/4] mips: bmips: add BCM63268 timer reset definitions
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Add missing timer reset definitions for BCM63268.
-
-Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
----
- include/dt-bindings/reset/bcm63268-reset.h | 4 ++++
- 1 file changed, 4 insertions(+)
-
---- a/include/dt-bindings/reset/bcm63268-reset.h
-+++ b/include/dt-bindings/reset/bcm63268-reset.h
-@@ -23,4 +23,8 @@
- #define BCM63268_RST_PCIE_HARD 17
- #define BCM63268_RST_GPHY 18
-
-+#define BCM63268_TRST_SW 29
-+#define BCM63268_TRST_HW 30
-+#define BCM63268_TRST_POR 31
-+
- #endif /* __DT_BINDINGS_RESET_BCM63268_H */
+++ /dev/null
-From c17702bad18a085ae913752b45bcc20c2cea879e Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
-Date: Thu, 25 Feb 2021 19:53:08 +0100
-Subject: [PATCH 3/4] dt-bindings: clock: Add BCM63268 timer binding
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Document the Broadcom BCM63268 Clock and Reset controller.
-
-Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
----
- .../clock/brcm,bcm63268-timer-clocks.yaml | 40 +++++++++++++++++++
- 1 file changed, 40 insertions(+)
- create mode 100644 Documentation/devicetree/bindings/clock/brcm,bcm63268-timer-clocks.yaml
-
---- /dev/null
-+++ b/Documentation/devicetree/bindings/clock/brcm,bcm63268-timer-clocks.yaml
-@@ -0,0 +1,40 @@
-+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
-+%YAML 1.2
-+---
-+$id: http://devicetree.org/schemas/clock/brcm,bcm63268-timer-clocks.yaml#
-+$schema: http://devicetree.org/meta-schemas/core.yaml#
-+
-+title: Broadcom BCM63268 Timer Clock and Reset Device Tree Bindings
-+
-+maintainers:
-+ - Álvaro Fernández Rojas <noltari@gmail.com>
-+
-+properties:
-+ compatible:
-+ const: brcm,bcm63268-timer-clocks
-+
-+ reg:
-+ maxItems: 1
-+
-+ "#clock-cells":
-+ const: 1
-+
-+ "#reset-cells":
-+ const: 1
-+
-+required:
-+ - compatible
-+ - reg
-+ - "#clock-cells"
-+ - "#reset-cells"
-+
-+additionalProperties: false
-+
-+examples:
-+ - |
-+ timer_clk: clock-controller@100000ac {
-+ compatible = "brcm,bcm63268-timer-clocks";
-+ reg = <0x100000ac 0x4>;
-+ #clock-cells = <1>;
-+ #reset-cells = <1>;
-+ };
+++ /dev/null
-From 3c8dd9d0937a19f3f20f28ba0b0b64f448d50dd4 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
-Date: Thu, 25 Feb 2021 19:54:04 +0100
-Subject: [PATCH 4/4] clk: bcm: Add BCM63268 timer clock and reset driver
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Add driver for BCM63268 timer clock and reset controller.
-
-Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
----
- drivers/clk/bcm/Kconfig | 9 ++
- drivers/clk/bcm/Makefile | 1 +
- drivers/clk/bcm/clk-bcm63268-timer.c | 232 +++++++++++++++++++++++++++
- 3 files changed, 242 insertions(+)
- create mode 100644 drivers/clk/bcm/clk-bcm63268-timer.c
-
---- a/drivers/clk/bcm/Kconfig
-+++ b/drivers/clk/bcm/Kconfig
-@@ -37,6 +37,15 @@ config CLK_BCM_63XX_GATE
- Enable common clock framework support for Broadcom BCM63xx DSL SoCs
- based on the MIPS architecture
-
-+config CLK_BCM63268_TIMER
-+ bool "Broadcom BCM63268 timer clock and reset support"
-+ depends on BMIPS_GENERIC || COMPILE_TEST
-+ default BMIPS_GENERIC
-+ select RESET_CONTROLLER
-+ help
-+ Enable timer clock and reset support for Broadcom BCM63268 DSL SoCs
-+ based on the MIPS architecture.
-+
- config CLK_BCM_KONA
- bool "Broadcom Kona CCU clock support"
- depends on ARCH_BCM_MOBILE || COMPILE_TEST
---- a/drivers/clk/bcm/Makefile
-+++ b/drivers/clk/bcm/Makefile
-@@ -1,6 +1,7 @@
- # SPDX-License-Identifier: GPL-2.0
- obj-$(CONFIG_CLK_BCM_63XX) += clk-bcm63xx.o
- obj-$(CONFIG_CLK_BCM_63XX_GATE) += clk-bcm63xx-gate.o
-+obj-$(CONFIG_CLK_BCM63268_TIMER) += clk-bcm63268-timer.o
- obj-$(CONFIG_CLK_BCM_KONA) += clk-kona.o
- obj-$(CONFIG_CLK_BCM_KONA) += clk-kona-setup.o
- obj-$(CONFIG_CLK_BCM_KONA) += clk-bcm281xx.o
---- /dev/null
-+++ b/drivers/clk/bcm/clk-bcm63268-timer.c
-@@ -0,0 +1,232 @@
-+// SPDX-License-Identifier: GPL-2.0
-+/*
-+ * BCM63268 Timer Clock and Reset Controller Driver
-+ *
-+ * Copyright (C) 2021 Álvaro Fernández Rojas <noltari@gmail.com>
-+ */
-+
-+#include <linux/clk-provider.h>
-+#include <linux/delay.h>
-+#include <linux/init.h>
-+#include <linux/of.h>
-+#include <linux/of_device.h>
-+#include <linux/platform_device.h>
-+#include <linux/reset-controller.h>
-+
-+#include <dt-bindings/clock/bcm63268-clock.h>
-+
-+#define BCM63268_TIMER_RESET_SLEEP_MIN_US 10000
-+#define BCM63268_TIMER_RESET_SLEEP_MAX_US 20000
-+
-+struct bcm63268_tclkrst_hw {
-+ void __iomem *regs;
-+ spinlock_t lock;
-+
-+ struct reset_controller_dev rcdev;
-+ struct clk_hw_onecell_data data;
-+};
-+
-+struct bcm63268_tclk_table_entry {
-+ const char * const name;
-+ u8 bit;
-+ unsigned long flags;
-+};
-+
-+static const struct bcm63268_tclk_table_entry bcm63268_timer_clocks[] = {
-+ {
-+ .name = "ephy1",
-+ .bit = BCM63268_TCLK_EPHY1,
-+ }, {
-+ .name = "ephy2",
-+ .bit = BCM63268_TCLK_EPHY2,
-+ }, {
-+ .name = "ephy3",
-+ .bit = BCM63268_TCLK_EPHY3,
-+ }, {
-+ .name = "gphy1",
-+ .bit = BCM63268_TCLK_GPHY1,
-+ }, {
-+ .name = "dsl",
-+ .bit = BCM63268_TCLK_DSL,
-+ }, {
-+ .name = "wakeon_ephy",
-+ .bit = BCM63268_TCLK_WAKEON_EPHY,
-+ }, {
-+ .name = "wakeon_dsl",
-+ .bit = BCM63268_TCLK_WAKEON_DSL,
-+ }, {
-+ .name = "fap1_pll",
-+ .bit = BCM63268_TCLK_FAP1,
-+ }, {
-+ .name = "fap2_pll",
-+ .bit = BCM63268_TCLK_FAP2,
-+ }, {
-+ .name = "uto_50",
-+ .bit = BCM63268_TCLK_UTO_50,
-+ }, {
-+ .name = "uto_extin",
-+ .bit = BCM63268_TCLK_UTO_EXTIN,
-+ }, {
-+ .name = "usb_ref",
-+ .bit = BCM63268_TCLK_USB_REF,
-+ }, {
-+ /* sentinel */
-+ }
-+};
-+
-+static inline struct bcm63268_tclkrst_hw *
-+to_bcm63268_timer_reset(struct reset_controller_dev *rcdev)
-+{
-+ return container_of(rcdev, struct bcm63268_tclkrst_hw, rcdev);
-+}
-+
-+static int bcm63268_timer_reset_update(struct reset_controller_dev *rcdev,
-+ unsigned long id, bool assert)
-+{
-+ struct bcm63268_tclkrst_hw *reset = to_bcm63268_timer_reset(rcdev);
-+ unsigned long flags;
-+ uint32_t val;
-+
-+ spin_lock_irqsave(&reset->lock, flags);
-+ val = __raw_readl(reset->regs);
-+ if (assert)
-+ val &= ~BIT(id);
-+ else
-+ val |= BIT(id);
-+ __raw_writel(val, reset->regs);
-+ spin_unlock_irqrestore(&reset->lock, flags);
-+
-+ return 0;
-+}
-+
-+static int bcm63268_timer_reset_assert(struct reset_controller_dev *rcdev,
-+ unsigned long id)
-+{
-+ return bcm63268_timer_reset_update(rcdev, id, true);
-+}
-+
-+static int bcm63268_timer_reset_deassert(struct reset_controller_dev *rcdev,
-+ unsigned long id)
-+{
-+ return bcm63268_timer_reset_update(rcdev, id, false);
-+}
-+
-+static int bcm63268_timer_reset_reset(struct reset_controller_dev *rcdev,
-+ unsigned long id)
-+{
-+ bcm63268_timer_reset_update(rcdev, id, true);
-+ usleep_range(BCM63268_TIMER_RESET_SLEEP_MIN_US,
-+ BCM63268_TIMER_RESET_SLEEP_MAX_US);
-+
-+ bcm63268_timer_reset_update(rcdev, id, false);
-+ /*
-+ * Ensure component is taken out reset state by sleeping also after
-+ * deasserting the reset. Otherwise, the component may not be ready
-+ * for operation.
-+ */
-+ usleep_range(BCM63268_TIMER_RESET_SLEEP_MIN_US,
-+ BCM63268_TIMER_RESET_SLEEP_MAX_US);
-+
-+ return 0;
-+}
-+
-+static int bcm63268_timer_reset_status(struct reset_controller_dev *rcdev,
-+ unsigned long id)
-+{
-+ struct bcm63268_tclkrst_hw *reset = to_bcm63268_timer_reset(rcdev);
-+
-+ return !(__raw_readl(reset->regs) & BIT(id));
-+}
-+
-+static struct reset_control_ops bcm63268_timer_reset_ops = {
-+ .assert = bcm63268_timer_reset_assert,
-+ .deassert = bcm63268_timer_reset_deassert,
-+ .reset = bcm63268_timer_reset_reset,
-+ .status = bcm63268_timer_reset_status,
-+};
-+
-+static int bcm63268_tclk_probe(struct platform_device *pdev)
-+{
-+ struct device *dev = &pdev->dev;
-+ const struct bcm63268_tclk_table_entry *entry, *table;
-+ struct bcm63268_tclkrst_hw *hw;
-+ u8 maxbit = 0;
-+ int i, ret;
-+
-+ table = of_device_get_match_data(dev);
-+ if (!table)
-+ return -EINVAL;
-+
-+ for (entry = table; entry->name; entry++)
-+ maxbit = max_t(u8, maxbit, entry->bit);
-+ maxbit++;
-+
-+ hw = devm_kzalloc(&pdev->dev, struct_size(hw, data.hws, maxbit),
-+ GFP_KERNEL);
-+ if (!hw)
-+ return -ENOMEM;
-+
-+ platform_set_drvdata(pdev, hw);
-+
-+ spin_lock_init(&hw->lock);
-+
-+ hw->data.num = maxbit;
-+ for (i = 0; i < maxbit; i++)
-+ hw->data.hws[i] = ERR_PTR(-ENODEV);
-+
-+ hw->regs = devm_platform_ioremap_resource(pdev, 0);
-+ if (IS_ERR(hw->regs))
-+ return PTR_ERR(hw->regs);
-+
-+ for (entry = table; entry->name; entry++) {
-+ struct clk_hw *clk;
-+
-+ clk = clk_hw_register_gate(dev, entry->name, NULL,
-+ entry->flags, hw->regs, entry->bit,
-+ CLK_GATE_BIG_ENDIAN, &hw->lock);
-+ if (IS_ERR(clk)) {
-+ ret = PTR_ERR(clk);
-+ goto out_err;
-+ }
-+
-+ hw->data.hws[entry->bit] = clk;
-+ }
-+
-+ ret = of_clk_add_hw_provider(dev->of_node, of_clk_hw_onecell_get,
-+ &hw->data);
-+ if (!ret)
-+ return 0;
-+
-+ hw->rcdev.of_node = dev->of_node;
-+ hw->rcdev.ops = &bcm63268_timer_reset_ops;
-+
-+ ret = devm_reset_controller_register(dev, &hw->rcdev);
-+ if (ret)
-+ dev_err(dev, "Failed to register reset controller\n");
-+
-+out_err:
-+ for (i = 0; i < hw->data.num; i++) {
-+ if (!IS_ERR(hw->data.hws[i]))
-+ clk_hw_unregister_gate(hw->data.hws[i]);
-+ }
-+
-+ return ret;
-+}
-+
-+static const struct of_device_id bcm63268_tclk_dt_ids[] = {
-+ {
-+ .compatible = "brcm,bcm63268-timer-clocks",
-+ .data = &bcm63268_timer_clocks,
-+ }, {
-+ /* sentinel */
-+ }
-+};
-+
-+static struct platform_driver bcm63268_tclk = {
-+ .probe = bcm63268_tclk_probe,
-+ .driver = {
-+ .name = "bcm63268-timer-clock",
-+ .of_match_table = bcm63268_tclk_dt_ids,
-+ },
-+};
-+builtin_platform_driver(bcm63268_tclk);
--- /dev/null
+From 815f0e738a8d5663a02350e2580706829144a722 Mon Sep 17 00:00:00 2001
+From: Horatiu Vultur <horatiu.vultur@microchip.com>
+Date: Wed, 3 Nov 2021 09:50:59 +0100
+Subject: [PATCH] clk: gate: Add devm_clk_hw_register_gate()
+
+Add devm_clk_hw_register_gate() - devres-managed version of
+clk_hw_register_gate()
+
+Suggested-by: Stephen Boyd <sboyd@kernel.org>
+Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
+Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
+Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
+Link: https://lore.kernel.org/r/20211103085102.1656081-2-horatiu.vultur@microchip.com
+---
+ drivers/clk/clk-gate.c | 35 +++++++++++++++++++++++++++++++++++
+ include/linux/clk-provider.h | 23 +++++++++++++++++++++++
+ 2 files changed, 58 insertions(+)
+
+--- a/drivers/clk/clk-gate.c
++++ b/drivers/clk/clk-gate.c
+@@ -7,6 +7,7 @@
+ */
+
+ #include <linux/clk-provider.h>
++#include <linux/device.h>
+ #include <linux/module.h>
+ #include <linux/slab.h>
+ #include <linux/io.h>
+@@ -222,3 +223,37 @@ void clk_hw_unregister_gate(struct clk_h
+ kfree(gate);
+ }
+ EXPORT_SYMBOL_GPL(clk_hw_unregister_gate);
++
++static void devm_clk_hw_release_gate(struct device *dev, void *res)
++{
++ clk_hw_unregister_gate(*(struct clk_hw **)res);
++}
++
++struct clk_hw *__devm_clk_hw_register_gate(struct device *dev,
++ struct device_node *np, const char *name,
++ const char *parent_name, const struct clk_hw *parent_hw,
++ const struct clk_parent_data *parent_data,
++ unsigned long flags,
++ void __iomem *reg, u8 bit_idx,
++ u8 clk_gate_flags, spinlock_t *lock)
++{
++ struct clk_hw **ptr, *hw;
++
++ ptr = devres_alloc(devm_clk_hw_release_gate, sizeof(*ptr), GFP_KERNEL);
++ if (!ptr)
++ return ERR_PTR(-ENOMEM);
++
++ hw = __clk_hw_register_gate(dev, np, name, parent_name, parent_hw,
++ parent_data, flags, reg, bit_idx,
++ clk_gate_flags, lock);
++
++ if (!IS_ERR(hw)) {
++ *ptr = hw;
++ devres_add(dev, ptr);
++ } else {
++ devres_free(ptr);
++ }
++
++ return hw;
++}
++EXPORT_SYMBOL_GPL(__devm_clk_hw_register_gate);
+--- a/include/linux/clk-provider.h
++++ b/include/linux/clk-provider.h
+@@ -490,6 +490,13 @@ struct clk_hw *__clk_hw_register_gate(st
+ unsigned long flags,
+ void __iomem *reg, u8 bit_idx,
+ u8 clk_gate_flags, spinlock_t *lock);
++struct clk_hw *__devm_clk_hw_register_gate(struct device *dev,
++ struct device_node *np, const char *name,
++ const char *parent_name, const struct clk_hw *parent_hw,
++ const struct clk_parent_data *parent_data,
++ unsigned long flags,
++ void __iomem *reg, u8 bit_idx,
++ u8 clk_gate_flags, spinlock_t *lock);
+ struct clk *clk_register_gate(struct device *dev, const char *name,
+ const char *parent_name, unsigned long flags,
+ void __iomem *reg, u8 bit_idx,
+@@ -544,6 +551,22 @@ struct clk *clk_register_gate(struct dev
+ __clk_hw_register_gate((dev), NULL, (name), NULL, NULL, (parent_data), \
+ (flags), (reg), (bit_idx), \
+ (clk_gate_flags), (lock))
++/**
++ * devm_clk_hw_register_gate - register a gate clock with the clock framework
++ * @dev: device that is registering this clock
++ * @name: name of this clock
++ * @parent_name: name of this clock's parent
++ * @flags: framework-specific flags for this clock
++ * @reg: register address to control gating of this clock
++ * @bit_idx: which bit in the register controls gating of this clock
++ * @clk_gate_flags: gate-specific flags for this clock
++ * @lock: shared register lock for this clock
++ */
++#define devm_clk_hw_register_gate(dev, name, parent_name, flags, reg, bit_idx,\
++ clk_gate_flags, lock) \
++ __devm_clk_hw_register_gate((dev), NULL, (name), (parent_name), NULL, \
++ NULL, (flags), (reg), (bit_idx), \
++ (clk_gate_flags), (lock))
+ void clk_unregister_gate(struct clk *clk);
+ void clk_hw_unregister_gate(struct clk_hw *hw);
+ int clk_gate_is_enabled(struct clk_hw *hw);
--- /dev/null
+From patchwork Wed Mar 22 17:15:12 2023
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+ <noltari@gmail.com>
+X-Patchwork-Id: 13184389
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+From: =?utf-8?q?=C3=81lvaro_Fern=C3=A1ndez_Rojas?= <noltari@gmail.com>
+To: mturquette@baylibre.com, sboyd@kernel.org, robh+dt@kernel.org,
+ krzysztof.kozlowski+dt@linaro.org, p.zabel@pengutronix.de,
+ f.fainelli@gmail.com, jonas.gorski@gmail.com,
+ william.zhang@broadcom.com, linux-clk@vger.kernel.org,
+ devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
+Cc: =?utf-8?q?=C3=81lvaro_Fern=C3=A1ndez_Rojas?= <noltari@gmail.com>,
+ Rob Herring <robh@kernel.org>
+Subject: [PATCH v4 1/4] dt-bindings: clk: add BCM63268 timer clock definitions
+Date: Wed, 22 Mar 2023 18:15:12 +0100
+Message-Id: <20230322171515.120353-2-noltari@gmail.com>
+X-Mailer: git-send-email 2.30.2
+In-Reply-To: <20230322171515.120353-1-noltari@gmail.com>
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+MIME-Version: 1.0
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+List-ID: <linux-clk.vger.kernel.org>
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+
+Add missing timer clock definitions for BCM63268.
+
+Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
+Acked-by: Rob Herring <robh@kernel.org>
+---
+ v4: no changes
+ v3: no changes
+ v2: change commit title, as suggested by Stephen Boyd
+
+ include/dt-bindings/clock/bcm63268-clock.h | 13 +++++++++++++
+ 1 file changed, 13 insertions(+)
+
+--- a/include/dt-bindings/clock/bcm63268-clock.h
++++ b/include/dt-bindings/clock/bcm63268-clock.h
+@@ -27,4 +27,17 @@
+ #define BCM63268_CLK_TBUS 27
+ #define BCM63268_CLK_ROBOSW250 31
+
++#define BCM63268_TCLK_EPHY1 0
++#define BCM63268_TCLK_EPHY2 1
++#define BCM63268_TCLK_EPHY3 2
++#define BCM63268_TCLK_GPHY1 3
++#define BCM63268_TCLK_DSL 4
++#define BCM63268_TCLK_WAKEON_EPHY 6
++#define BCM63268_TCLK_WAKEON_DSL 7
++#define BCM63268_TCLK_FAP1 11
++#define BCM63268_TCLK_FAP2 15
++#define BCM63268_TCLK_UTO_50 16
++#define BCM63268_TCLK_UTO_EXTIN 17
++#define BCM63268_TCLK_USB_REF 18
++
+ #endif /* __DT_BINDINGS_CLOCK_BCM63268_H */
--- /dev/null
+From patchwork Wed Mar 22 17:15:13 2023
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+From: =?utf-8?q?=C3=81lvaro_Fern=C3=A1ndez_Rojas?= <noltari@gmail.com>
+To: mturquette@baylibre.com, sboyd@kernel.org, robh+dt@kernel.org,
+ krzysztof.kozlowski+dt@linaro.org, p.zabel@pengutronix.de,
+ f.fainelli@gmail.com, jonas.gorski@gmail.com,
+ william.zhang@broadcom.com, linux-clk@vger.kernel.org,
+ devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
+Cc: =?utf-8?q?=C3=81lvaro_Fern=C3=A1ndez_Rojas?= <noltari@gmail.com>,
+ Rob Herring <robh@kernel.org>
+Subject: [PATCH v4 2/4] dt-bindings: reset: add BCM63268 timer reset
+ definitions
+Date: Wed, 22 Mar 2023 18:15:13 +0100
+Message-Id: <20230322171515.120353-3-noltari@gmail.com>
+X-Mailer: git-send-email 2.30.2
+In-Reply-To: <20230322171515.120353-1-noltari@gmail.com>
+References: <20230322171515.120353-1-noltari@gmail.com>
+MIME-Version: 1.0
+Precedence: bulk
+List-ID: <linux-clk.vger.kernel.org>
+X-Mailing-List: linux-clk@vger.kernel.org
+
+Add missing timer reset definitions for BCM63268.
+
+Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
+Acked-by: Rob Herring <robh@kernel.org>
+---
+ v4: no changes
+ v3: no changes
+ v2: change commit title, as suggested by Stephen Boyd
+
+ include/dt-bindings/reset/bcm63268-reset.h | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/include/dt-bindings/reset/bcm63268-reset.h
++++ b/include/dt-bindings/reset/bcm63268-reset.h
+@@ -23,4 +23,8 @@
+ #define BCM63268_RST_PCIE_HARD 17
+ #define BCM63268_RST_GPHY 18
+
++#define BCM63268_TRST_SW 29
++#define BCM63268_TRST_HW 30
++#define BCM63268_TRST_POR 31
++
+ #endif /* __DT_BINDINGS_RESET_BCM63268_H */
--- /dev/null
+From patchwork Wed Mar 22 17:15:15 2023
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+From: =?utf-8?q?=C3=81lvaro_Fern=C3=A1ndez_Rojas?= <noltari@gmail.com>
+To: mturquette@baylibre.com, sboyd@kernel.org, robh+dt@kernel.org,
+ krzysztof.kozlowski+dt@linaro.org, p.zabel@pengutronix.de,
+ f.fainelli@gmail.com, jonas.gorski@gmail.com,
+ william.zhang@broadcom.com, linux-clk@vger.kernel.org,
+ devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
+Cc: =?utf-8?q?=C3=81lvaro_Fern=C3=A1ndez_Rojas?= <noltari@gmail.com>
+Subject: [PATCH v4 4/4] clk: bcm: Add BCM63268 timer clock and reset driver
+Date: Wed, 22 Mar 2023 18:15:15 +0100
+Message-Id: <20230322171515.120353-5-noltari@gmail.com>
+X-Mailer: git-send-email 2.30.2
+In-Reply-To: <20230322171515.120353-1-noltari@gmail.com>
+References: <20230322171515.120353-1-noltari@gmail.com>
+MIME-Version: 1.0
+Precedence: bulk
+List-ID: <linux-clk.vger.kernel.org>
+X-Mailing-List: linux-clk@vger.kernel.org
+
+Add driver for BCM63268 timer clock and reset controller.
+
+Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
+---
+ v4: add changes suggested by Stephen Boyd:
+ - Usage of of_device_get_match_data() isn't needed.
+ - Use devm_clk_hw_register_gate().
+ - Drop clk_hw_unregister_gate().
+ v3: add missing <linux/io.h> include to fix build warning
+ v2: add changes suggested by Stephen Boyd
+
+ drivers/clk/bcm/Kconfig | 9 ++
+ drivers/clk/bcm/Makefile | 1 +
+ drivers/clk/bcm/clk-bcm63268-timer.c | 215 +++++++++++++++++++++++++++
+ 3 files changed, 225 insertions(+)
+ create mode 100644 drivers/clk/bcm/clk-bcm63268-timer.c
+
+--- a/drivers/clk/bcm/Kconfig
++++ b/drivers/clk/bcm/Kconfig
+@@ -37,6 +37,15 @@ config CLK_BCM_63XX_GATE
+ Enable common clock framework support for Broadcom BCM63xx DSL SoCs
+ based on the MIPS architecture
+
++config CLK_BCM63268_TIMER
++ bool "Broadcom BCM63268 timer clock and reset support"
++ depends on BMIPS_GENERIC || COMPILE_TEST
++ default BMIPS_GENERIC
++ select RESET_CONTROLLER
++ help
++ Enable timer clock and reset support for Broadcom BCM63268 DSL SoCs
++ based on the MIPS architecture.
++
+ config CLK_BCM_KONA
+ bool "Broadcom Kona CCU clock support"
+ depends on ARCH_BCM_MOBILE || COMPILE_TEST
+--- a/drivers/clk/bcm/Makefile
++++ b/drivers/clk/bcm/Makefile
+@@ -1,6 +1,7 @@
+ # SPDX-License-Identifier: GPL-2.0
+ obj-$(CONFIG_CLK_BCM_63XX) += clk-bcm63xx.o
+ obj-$(CONFIG_CLK_BCM_63XX_GATE) += clk-bcm63xx-gate.o
++obj-$(CONFIG_CLK_BCM63268_TIMER) += clk-bcm63268-timer.o
+ obj-$(CONFIG_CLK_BCM_KONA) += clk-kona.o
+ obj-$(CONFIG_CLK_BCM_KONA) += clk-kona-setup.o
+ obj-$(CONFIG_CLK_BCM_KONA) += clk-bcm281xx.o
+--- /dev/null
++++ b/drivers/clk/bcm/clk-bcm63268-timer.c
+@@ -0,0 +1,215 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * BCM63268 Timer Clock and Reset Controller Driver
++ *
++ * Copyright (C) 2023 Álvaro Fernández Rojas <noltari@gmail.com>
++ */
++
++#include <linux/clk-provider.h>
++#include <linux/delay.h>
++#include <linux/io.h>
++#include <linux/of.h>
++#include <linux/of_device.h>
++#include <linux/platform_device.h>
++#include <linux/reset-controller.h>
++
++#include <dt-bindings/clock/bcm63268-clock.h>
++
++#define BCM63268_TIMER_RESET_SLEEP_MIN_US 10000
++#define BCM63268_TIMER_RESET_SLEEP_MAX_US 20000
++
++struct bcm63268_tclkrst_hw {
++ void __iomem *regs;
++ spinlock_t lock;
++
++ struct reset_controller_dev rcdev;
++ struct clk_hw_onecell_data data;
++};
++
++struct bcm63268_tclk_table_entry {
++ const char * const name;
++ u8 bit;
++};
++
++static const struct bcm63268_tclk_table_entry bcm63268_timer_clocks[] = {
++ {
++ .name = "ephy1",
++ .bit = BCM63268_TCLK_EPHY1,
++ }, {
++ .name = "ephy2",
++ .bit = BCM63268_TCLK_EPHY2,
++ }, {
++ .name = "ephy3",
++ .bit = BCM63268_TCLK_EPHY3,
++ }, {
++ .name = "gphy1",
++ .bit = BCM63268_TCLK_GPHY1,
++ }, {
++ .name = "dsl",
++ .bit = BCM63268_TCLK_DSL,
++ }, {
++ .name = "wakeon_ephy",
++ .bit = BCM63268_TCLK_WAKEON_EPHY,
++ }, {
++ .name = "wakeon_dsl",
++ .bit = BCM63268_TCLK_WAKEON_DSL,
++ }, {
++ .name = "fap1_pll",
++ .bit = BCM63268_TCLK_FAP1,
++ }, {
++ .name = "fap2_pll",
++ .bit = BCM63268_TCLK_FAP2,
++ }, {
++ .name = "uto_50",
++ .bit = BCM63268_TCLK_UTO_50,
++ }, {
++ .name = "uto_extin",
++ .bit = BCM63268_TCLK_UTO_EXTIN,
++ }, {
++ .name = "usb_ref",
++ .bit = BCM63268_TCLK_USB_REF,
++ }, {
++ /* sentinel */
++ }
++};
++
++static inline struct bcm63268_tclkrst_hw *
++to_bcm63268_timer_reset(struct reset_controller_dev *rcdev)
++{
++ return container_of(rcdev, struct bcm63268_tclkrst_hw, rcdev);
++}
++
++static int bcm63268_timer_reset_update(struct reset_controller_dev *rcdev,
++ unsigned long id, bool assert)
++{
++ struct bcm63268_tclkrst_hw *reset = to_bcm63268_timer_reset(rcdev);
++ unsigned long flags;
++ uint32_t val;
++
++ spin_lock_irqsave(&reset->lock, flags);
++ val = __raw_readl(reset->regs);
++ if (assert)
++ val &= ~BIT(id);
++ else
++ val |= BIT(id);
++ __raw_writel(val, reset->regs);
++ spin_unlock_irqrestore(&reset->lock, flags);
++
++ return 0;
++}
++
++static int bcm63268_timer_reset_assert(struct reset_controller_dev *rcdev,
++ unsigned long id)
++{
++ return bcm63268_timer_reset_update(rcdev, id, true);
++}
++
++static int bcm63268_timer_reset_deassert(struct reset_controller_dev *rcdev,
++ unsigned long id)
++{
++ return bcm63268_timer_reset_update(rcdev, id, false);
++}
++
++static int bcm63268_timer_reset_reset(struct reset_controller_dev *rcdev,
++ unsigned long id)
++{
++ bcm63268_timer_reset_update(rcdev, id, true);
++ usleep_range(BCM63268_TIMER_RESET_SLEEP_MIN_US,
++ BCM63268_TIMER_RESET_SLEEP_MAX_US);
++
++ bcm63268_timer_reset_update(rcdev, id, false);
++ /*
++ * Ensure component is taken out reset state by sleeping also after
++ * deasserting the reset. Otherwise, the component may not be ready
++ * for operation.
++ */
++ usleep_range(BCM63268_TIMER_RESET_SLEEP_MIN_US,
++ BCM63268_TIMER_RESET_SLEEP_MAX_US);
++
++ return 0;
++}
++
++static int bcm63268_timer_reset_status(struct reset_controller_dev *rcdev,
++ unsigned long id)
++{
++ struct bcm63268_tclkrst_hw *reset = to_bcm63268_timer_reset(rcdev);
++
++ return !(__raw_readl(reset->regs) & BIT(id));
++}
++
++static struct reset_control_ops bcm63268_timer_reset_ops = {
++ .assert = bcm63268_timer_reset_assert,
++ .deassert = bcm63268_timer_reset_deassert,
++ .reset = bcm63268_timer_reset_reset,
++ .status = bcm63268_timer_reset_status,
++};
++
++static int bcm63268_tclk_probe(struct platform_device *pdev)
++{
++ struct device *dev = &pdev->dev;
++ const struct bcm63268_tclk_table_entry *entry;
++ struct bcm63268_tclkrst_hw *hw;
++ struct clk_hw *clk;
++ u8 maxbit = 0;
++ int i, ret;
++
++ for (entry = bcm63268_timer_clocks; entry->name; entry++)
++ maxbit = max(maxbit, entry->bit);
++ maxbit++;
++
++ hw = devm_kzalloc(&pdev->dev, struct_size(hw, data.hws, maxbit),
++ GFP_KERNEL);
++ if (!hw)
++ return -ENOMEM;
++
++ platform_set_drvdata(pdev, hw);
++
++ spin_lock_init(&hw->lock);
++
++ hw->data.num = maxbit;
++ for (i = 0; i < maxbit; i++)
++ hw->data.hws[i] = ERR_PTR(-ENODEV);
++
++ hw->regs = devm_platform_ioremap_resource(pdev, 0);
++ if (IS_ERR(hw->regs))
++ return PTR_ERR(hw->regs);
++
++ for (entry = bcm63268_timer_clocks; entry->name; entry++) {
++ clk = devm_clk_hw_register_gate(dev, entry->name, NULL, 0,
++ hw->regs, entry->bit,
++ CLK_GATE_BIG_ENDIAN,
++ &hw->lock);
++ if (IS_ERR(clk))
++ return PTR_ERR(clk);
++
++ hw->data.hws[entry->bit] = clk;
++ }
++
++ ret = devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
++ &hw->data);
++ if (ret)
++ return ret;
++
++ hw->rcdev.of_node = dev->of_node;
++ hw->rcdev.ops = &bcm63268_timer_reset_ops;
++
++ ret = devm_reset_controller_register(dev, &hw->rcdev);
++ if (ret)
++ dev_err(dev, "Failed to register reset controller\n");
++
++ return 0;
++}
++
++static const struct of_device_id bcm63268_tclk_dt_ids[] = {
++ { .compatible = "brcm,bcm63268-timer-clocks" },
++ { /* sentinel */ }
++};
++
++static struct platform_driver bcm63268_tclk = {
++ .probe = bcm63268_tclk_probe,
++ .driver = {
++ .name = "bcm63268-timer-clock",
++ .of_match_table = bcm63268_tclk_dt_ids,
++ },
++};
++builtin_platform_driver(bcm63268_tclk);
projects / openwrt / openwrt.git / commitdiff