pinctrl: Add pinctrl driver for imx8ulp

Add pinctrl driver for i.MX8ULP
Signed-off-by: NYe Li <ye.li@nxp.com>
Signed-off-by: NPeng Fan <peng.fan@nxp.com>

drivers/pinctrl/nxp/Kconfig

@@ -60,6 +60,20 @@ config PINCTRL_IMX7ULP
 	  only parses the 'fsl,pins' property and configure related
 	  registers.
 
+config PINCTRL_IMX8ULP
+	bool "IMX8ULP pinctrl driver"
+	depends on ARCH_IMX8ULP && PINCTRL_FULL
+	select DEVRES
+	select PINCTRL_IMX
+	help
+	  Say Y here to enable the imx8ulp pinctrl driver
+
+	  This provides a simple pinctrl driver for i.MX8ULP SoC familiy.
+	  This feature depends on device tree configuration. This driver
+	  is different from the linux one, this is a simple implementation,
+	  only parses the 'fsl,pins' property and configure related
+	  registers.
+
 config PINCTRL_IMX8
 	bool "IMX8 pinctrl driver"
 	depends on ARCH_IMX8 && PINCTRL_FULL

drivers/pinctrl/nxp/Makefile

@@ -3,6 +3,7 @@ obj-$(CONFIG_PINCTRL_IMX5)		+= pinctrl-imx5.o
 obj-$(CONFIG_PINCTRL_IMX6)		+= pinctrl-imx6.o
 obj-$(CONFIG_PINCTRL_IMX7)		+= pinctrl-imx7.o
 obj-$(CONFIG_PINCTRL_IMX7ULP)		+= pinctrl-imx7ulp.o
+obj-$(CONFIG_PINCTRL_IMX8ULP)		+= pinctrl-imx8ulp.o
 obj-$(CONFIG_PINCTRL_IMX_SCU)		+= pinctrl-scu.o
 obj-$(CONFIG_PINCTRL_IMX8)		+= pinctrl-imx8.o
 obj-$(CONFIG_PINCTRL_IMX8M)		+= pinctrl-imx8m.o

drivers/pinctrl/nxp/pinctrl-imx8ulp.c

+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2020 NXP
+ *
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <dm/pinctrl.h>
+
+#include "pinctrl-imx.h"
+
+static struct imx_pinctrl_soc_info imx8ulp_pinctrl_soc_info0 = {
+	.flags = ZERO_OFFSET_VALID | SHARE_MUX_CONF_REG | CONFIG_IBE_OBE,
+};
+
+static struct imx_pinctrl_soc_info imx8ulp_pinctrl_soc_info1 = {
+	.flags = ZERO_OFFSET_VALID | SHARE_MUX_CONF_REG | CONFIG_IBE_OBE,
+};
+
+static int imx8ulp_pinctrl_probe(struct udevice *dev)
+{
+	struct imx_pinctrl_soc_info *info =
+		(struct imx_pinctrl_soc_info *)dev_get_driver_data(dev);
+
+	return imx_pinctrl_probe(dev, info);
+}
+
+static const struct udevice_id imx8ulp_pinctrl_match[] = {
+	{ .compatible = "fsl,imx8ulp-iomuxc0", .data = (ulong)&imx8ulp_pinctrl_soc_info0 },
+	{ .compatible = "fsl,imx8ulp-iomuxc1", .data = (ulong)&imx8ulp_pinctrl_soc_info1 },
+	{ /* sentinel */ }
+};
+
+U_BOOT_DRIVER(imx8ulp_pinctrl) = {
+	.name = "imx8ulp-pinctrl",
+	.id = UCLASS_PINCTRL,
+	.of_match = of_match_ptr(imx8ulp_pinctrl_match),
+	.probe = imx8ulp_pinctrl_probe,
+	.remove = imx_pinctrl_remove,
+	.priv_auto = sizeof(struct imx_pinctrl_priv),
+	.ops = &imx_pinctrl_ops,
+	.flags = DM_FLAG_PRE_RELOC,
+};