[PATCH] arm: dts: qcom: Sync pinctrl DT nodes with Linux bindings

Sumit Garg sumit.garg at linaro.org
Thu Jul 14 09:33:37 CEST 2022


Currently for all Qcom SoCs/boards there are separate compatibles for
GPIO and pinctrl. But this is inconsistent with official (upstream) Linux
bindings which requires only a single compatible "qcom,<SoC name>-pinctrl"
and there is no such compatible property as "qcom,tlmm-<SoC name>".

So fix this inconsistency for Qcom SoCs in order to comply with upstream
DT bindings. This is done via removing compatibles from "msm_gpio" driver
and via binding to "msm_gpio" driver from pinctrl driver in case
"gpio-controller" property is specified for pinctrl node.

Suggested-by: Stephan Gerhold <stephan at gerhold.net>
Signed-off-by: Sumit Garg <sumit.garg at linaro.org>
---

This is based on top of mine other patch-set [1]. Although, I have tested
it on db845c and qcs404-evb but I would like other board maintainers to
test it as well.

[1] https://patchwork.ozlabs.org/project/uboot/list/?series=309135

 arch/arm/dts/dragonboard410c-uboot.dtsi       |  2 +-
 arch/arm/dts/dragonboard410c.dts              | 17 +++-----
 arch/arm/dts/dragonboard820c-uboot.dtsi       |  2 +-
 arch/arm/dts/dragonboard820c.dts              |  4 +-
 arch/arm/dts/qcom-ipq4019.dtsi                | 18 +++------
 arch/arm/dts/qcs404-evb.dts                   |  2 +-
 arch/arm/dts/sdm845.dtsi                      |  2 +-
 arch/arm/mach-ipq40xx/pinctrl-snapdragon.c    | 31 ++++++++++++++-
 arch/arm/mach-snapdragon/Makefile             |  2 +-
 arch/arm/mach-snapdragon/pinctrl-snapdragon.c | 39 ++++++++++++++++---
 drivers/gpio/msm_gpio.c                       | 10 +----
 11 files changed, 83 insertions(+), 46 deletions(-)

diff --git a/arch/arm/dts/dragonboard410c-uboot.dtsi b/arch/arm/dts/dragonboard410c-uboot.dtsi
index 9c1be2566f..e4fecaa19e 100644
--- a/arch/arm/dts/dragonboard410c-uboot.dtsi
+++ b/arch/arm/dts/dragonboard410c-uboot.dtsi
@@ -14,7 +14,7 @@
 	soc {
 		u-boot,dm-pre-reloc;
 
-		qcom,tlmm at 1000000 {
+		pinctrl at 1000000 {
 			u-boot,dm-pre-reloc;
 
 			uart {
diff --git a/arch/arm/dts/dragonboard410c.dts b/arch/arm/dts/dragonboard410c.dts
index 7e56140df2..e0452b270c 100644
--- a/arch/arm/dts/dragonboard410c.dts
+++ b/arch/arm/dts/dragonboard410c.dts
@@ -60,9 +60,13 @@
 			reg = <0x60000 0x8000>;
 		};
 
-		pinctrl: qcom,tlmm at 1000000 {
-			compatible = "qcom,tlmm-apq8016";
+		soc_gpios: pinctrl at 1000000 {
+			compatible = "qcom,apq8016-pinctrl";
 			reg = <0x1000000 0x400000>;
+			gpio-controller;
+			gpio-count = <122>;
+			gpio-bank-name="soc";
+			#gpio-cells = <2>;
 
 			blsp1_uart: uart {
 				function = "blsp1_uart";
@@ -86,15 +90,6 @@
 			pinctrl-0 = <&blsp1_uart>;
 		};
 
-		soc_gpios: pinctrl at 1000000 {
-			compatible = "qcom,apq8016-pinctrl";
-			reg = <0x1000000 0x300000>;
-			gpio-controller;
-			gpio-count = <122>;
-			gpio-bank-name="soc";
-			#gpio-cells = <2>;
-		};
-
 		ehci at 78d9000 {
 			compatible = "qcom,ehci-host";
 			reg = <0x78d9000 0x400>;
diff --git a/arch/arm/dts/dragonboard820c-uboot.dtsi b/arch/arm/dts/dragonboard820c-uboot.dtsi
index 8610d7ec37..2270ac73bf 100644
--- a/arch/arm/dts/dragonboard820c-uboot.dtsi
+++ b/arch/arm/dts/dragonboard820c-uboot.dtsi
@@ -13,7 +13,7 @@
 	soc {
 		u-boot,dm-pre-reloc;
 
-		qcom,tlmm at 1010000 {
+		pinctrl at 1010000 {
 			u-boot,dm-pre-reloc;
 
 			uart {
diff --git a/arch/arm/dts/dragonboard820c.dts b/arch/arm/dts/dragonboard820c.dts
index 1114ddd7d3..1a6e37887f 100644
--- a/arch/arm/dts/dragonboard820c.dts
+++ b/arch/arm/dts/dragonboard820c.dts
@@ -64,8 +64,8 @@
 			reg = <0x300000 0x90000>;
 		};
 
-		pinctrl: qcom,tlmm at 1010000 {
-			compatible = "qcom,tlmm-apq8096";
+		pinctrl: pinctrl at 1010000 {
+			compatible = "qcom,msm8916-pinctrl";
 			reg = <0x1010000 0x400000>;
 
 			blsp8_uart: uart {
diff --git a/arch/arm/dts/qcom-ipq4019.dtsi b/arch/arm/dts/qcom-ipq4019.dtsi
index 7a52ea2c4e..181732d262 100644
--- a/arch/arm/dts/qcom-ipq4019.dtsi
+++ b/arch/arm/dts/qcom-ipq4019.dtsi
@@ -75,9 +75,13 @@
 			u-boot,dm-pre-reloc;
 		};
 
-		pinctrl: qcom,tlmm at 1000000 {
-			compatible = "qcom,tlmm-ipq4019";
+		soc_gpios: pinctrl at 1000000 {
+			compatible = "qcom,ipq4019-pinctrl";
 			reg = <0x1000000 0x300000>;
+			gpio-controller;
+			gpio-count = <100>;
+			gpio-bank-name="soc";
+			#gpio-cells = <2>;
 			u-boot,dm-pre-reloc;
 		};
 
@@ -90,16 +94,6 @@
 			u-boot,dm-pre-reloc;
 		};
 
-		soc_gpios: pinctrl at 1000000 {
-			compatible = "qcom,ipq4019-pinctrl";
-			reg = <0x1000000 0x300000>;
-			gpio-controller;
-			gpio-count = <100>;
-			gpio-bank-name="soc";
-			#gpio-cells = <2>;
-			u-boot,dm-pre-reloc;
-		};
-
 		blsp1_spi1: spi at 78b5000 {
 			compatible = "qcom,spi-qup-v2.2.1";
 			reg = <0x78b5000 0x600>;
diff --git a/arch/arm/dts/qcs404-evb.dts b/arch/arm/dts/qcs404-evb.dts
index 4f0ae20bdb..09687e1fd3 100644
--- a/arch/arm/dts/qcs404-evb.dts
+++ b/arch/arm/dts/qcs404-evb.dts
@@ -38,7 +38,7 @@
 		compatible = "simple-bus";
 
 		pinctrl_north at 1300000 {
-			compatible = "qcom,tlmm-qcs404";
+			compatible = "qcom,qcs404-pinctrl";
 			reg = <0x1300000 0x200000>;
 
 			blsp1_uart2: uart {
diff --git a/arch/arm/dts/sdm845.dtsi b/arch/arm/dts/sdm845.dtsi
index df5b6dfcfc..607af277f8 100644
--- a/arch/arm/dts/sdm845.dtsi
+++ b/arch/arm/dts/sdm845.dtsi
@@ -37,7 +37,7 @@
 		};
 
 		tlmm_north: pinctrl_north at 3900000 {
-			compatible = "qcom,tlmm-sdm845";
+			compatible = "qcom,sdm845-pinctrl";
 			reg = <0x3900000 0x400000>;
 			gpio-count = <150>;
 			gpio-controller;
diff --git a/arch/arm/mach-ipq40xx/pinctrl-snapdragon.c b/arch/arm/mach-ipq40xx/pinctrl-snapdragon.c
index c51a75ee94..036fec93d7 100644
--- a/arch/arm/mach-ipq40xx/pinctrl-snapdragon.c
+++ b/arch/arm/mach-ipq40xx/pinctrl-snapdragon.c
@@ -14,6 +14,8 @@
 #include <dm.h>
 #include <errno.h>
 #include <asm/io.h>
+#include <dm/device_compat.h>
+#include <dm/lists.h>
 #include <dm/pinctrl.h>
 #include <linux/bitops.h>
 #include "pinctrl-snapdragon.h"
@@ -110,6 +112,32 @@ static int msm_pinconf_set(struct udevice *dev, unsigned int pin_selector,
 	return 0;
 }
 
+static int msm_pinctrl_bind(struct udevice *dev)
+{
+	ofnode node = dev_ofnode(dev);
+	const char *name;
+	int ret;
+
+	ofnode_get_property(node, "gpio-controller", &ret);
+	if (ret < 0)
+		return 0;
+
+	/* Get the name of gpio node */
+	name = ofnode_get_name(node);
+	if (!name)
+		return -EINVAL;
+
+	/* Bind gpio node */
+	ret = device_bind_driver_to_node(dev, "gpio_msm",
+					 name, node, NULL);
+	if (ret)
+		return ret;
+
+	dev_dbg(dev, "bind %s\n", name);
+
+	return 0;
+}
+
 static struct pinctrl_ops msm_pinctrl_ops = {
 	.get_pins_count = msm_get_pins_count,
 	.get_pin_name = msm_get_pin_name,
@@ -123,7 +151,7 @@ static struct pinctrl_ops msm_pinctrl_ops = {
 };
 
 static const struct udevice_id msm_pinctrl_ids[] = {
-	{ .compatible = "qcom,tlmm-ipq4019", .data = (ulong)&ipq4019_data },
+	{ .compatible = "qcom,ipq4019-pinctrl", .data = (ulong)&ipq4019_data },
 	{ }
 };
 
@@ -134,4 +162,5 @@ U_BOOT_DRIVER(pinctrl_snapdraon) = {
 	.priv_auto	= sizeof(struct msm_pinctrl_priv),
 	.ops		= &msm_pinctrl_ops,
 	.probe		= msm_pinctrl_probe,
+	.bind		= msm_pinctrl_bind,
 };
diff --git a/arch/arm/mach-snapdragon/Makefile b/arch/arm/mach-snapdragon/Makefile
index 0d31f10f68..cbaaf23f6b 100644
--- a/arch/arm/mach-snapdragon/Makefile
+++ b/arch/arm/mach-snapdragon/Makefile
@@ -16,6 +16,6 @@ obj-y += pinctrl-snapdragon.o
 obj-y += pinctrl-apq8016.o
 obj-y += pinctrl-apq8096.o
 obj-y += pinctrl-qcs404.o
-obj-$(CONFIG_SDM845) += pinctrl-sdm845.o
+obj-y += pinctrl-sdm845.o
 obj-$(CONFIG_TARGET_QCS404EVB) += clock-qcs404.o
 obj-$(CONFIG_TARGET_QCS404EVB) += sysmap-qcs404.o
diff --git a/arch/arm/mach-snapdragon/pinctrl-snapdragon.c b/arch/arm/mach-snapdragon/pinctrl-snapdragon.c
index c2148a5d0a..bba1f642ae 100644
--- a/arch/arm/mach-snapdragon/pinctrl-snapdragon.c
+++ b/arch/arm/mach-snapdragon/pinctrl-snapdragon.c
@@ -10,6 +10,8 @@
 #include <dm.h>
 #include <errno.h>
 #include <asm/io.h>
+#include <dm/device_compat.h>
+#include <dm/lists.h>
 #include <dm/pinctrl.h>
 #include <linux/bitops.h>
 #include "pinctrl-snapdragon.h"
@@ -113,13 +115,37 @@ static struct pinctrl_ops msm_pinctrl_ops = {
 	.get_function_name = msm_get_function_name,
 };
 
+static int msm_pinctrl_bind(struct udevice *dev)
+{
+	ofnode node = dev_ofnode(dev);
+	const char *name;
+	int ret;
+
+	ofnode_get_property(node, "gpio-controller", &ret);
+	if (ret < 0)
+		return 0;
+
+	/* Get the name of gpio node */
+	name = ofnode_get_name(node);
+	if (!name)
+		return -EINVAL;
+
+	/* Bind gpio node */
+	ret = device_bind_driver_to_node(dev, "gpio_msm",
+					 name, node, NULL);
+	if (ret)
+		return ret;
+
+	dev_dbg(dev, "bind %s\n", name);
+
+	return 0;
+}
+
 static const struct udevice_id msm_pinctrl_ids[] = {
-	{ .compatible = "qcom,tlmm-apq8016", .data = (ulong)&apq8016_data },
-	{ .compatible = "qcom,tlmm-apq8096", .data = (ulong)&apq8096_data },
-#ifdef CONFIG_SDM845
-	{ .compatible = "qcom,tlmm-sdm845", .data = (ulong)&sdm845_data },
-#endif
-	{ .compatible = "qcom,tlmm-qcs404", .data = (ulong)&qcs404_data },
+	{ .compatible = "qcom,apq8016-pinctrl", .data = (ulong)&apq8016_data },
+	{ .compatible = "qcom,msm8916-pinctrl", .data = (ulong)&apq8096_data },
+	{ .compatible = "qcom,sdm845-pinctrl", .data = (ulong)&sdm845_data },
+	{ .compatible = "qcom,qcs404-pinctrl", .data = (ulong)&qcs404_data },
 	{ }
 };
 
@@ -130,4 +156,5 @@ U_BOOT_DRIVER(pinctrl_snapdraon) = {
 	.priv_auto	= sizeof(struct msm_pinctrl_priv),
 	.ops		= &msm_pinctrl_ops,
 	.probe		= msm_pinctrl_probe,
+	.bind		= msm_pinctrl_bind,
 };
diff --git a/drivers/gpio/msm_gpio.c b/drivers/gpio/msm_gpio.c
index a3c3cd7824..51670f2637 100644
--- a/drivers/gpio/msm_gpio.c
+++ b/drivers/gpio/msm_gpio.c
@@ -116,20 +116,12 @@ static int msm_gpio_of_to_plat(struct udevice *dev)
 	return 0;
 }
 
-static const struct udevice_id msm_gpio_ids[] = {
-	{ .compatible = "qcom,msm8916-pinctrl" },
-	{ .compatible = "qcom,apq8016-pinctrl" },
-	{ .compatible = "qcom,ipq4019-pinctrl" },
-	{ .compatible = "qcom,sdm845-pinctrl" },
-	{ }
-};
-
 U_BOOT_DRIVER(gpio_msm) = {
 	.name	= "gpio_msm",
 	.id	= UCLASS_GPIO,
-	.of_match = msm_gpio_ids,
 	.of_to_plat = msm_gpio_of_to_plat,
 	.probe	= msm_gpio_probe,
 	.ops	= &gpio_msm_ops,
+	.flags	= DM_UC_FLAG_SEQ_ALIAS,
 	.priv_auto	= sizeof(struct msm_gpio_bank),
 };
-- 
2.25.1



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