rockchip: rk3188: Add pinctrl driver

Add a driver which supports pin multiplexing setup for the most commonly
used peripherals.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Kever Yang <kever.yang@rock-chips.com>

3 files changed, 621 insertions, 0 deletions

diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index 0c832e1..397fbe1 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -132,6 +132,15 @@ config ROCKCHIP_RK3036_PINCTRL
 	  definitions and pin control functions for each available multiplex
 	  function.
 
+config ROCKCHIP_RK3188_PINCTRL
+	bool "Rockchip pin control driver"
+	depends on DM
+	help
+	  Support pin multiplexing control on Rockchip rk3188 SoCs. The driver
+	  is controlled by a device tree node which contains both the GPIO
+	  definitions and pin control functions for each available multiplex
+	  function.
+
 config ROCKCHIP_RK3288_PINCTRL
 	bool "Rockchip pin control driver"
 	depends on DM
diff --git a/drivers/pinctrl/rockchip/Makefile b/drivers/pinctrl/rockchip/Makefile
index 805c833..cc99aee 100644
--- a/drivers/pinctrl/rockchip/Makefile
+++ b/drivers/pinctrl/rockchip/Makefile
@@ -6,5 +6,6 @@
 #
 
 obj-$(CONFIG_ROCKCHIP_RK3036_PINCTRL) += pinctrl_rk3036.o
+obj-$(CONFIG_ROCKCHIP_RK3188_PINCTRL) += pinctrl_rk3188.o
 obj-$(CONFIG_ROCKCHIP_RK3288_PINCTRL) += pinctrl_rk3288.o
 obj-$(CONFIG_ROCKCHIP_RK3399_PINCTRL) += pinctrl_rk3399.o
diff --git a/drivers/pinctrl/rockchip/pinctrl_rk3188.c b/drivers/pinctrl/rockchip/pinctrl_rk3188.c
new file mode 100644
index 0000000..ef94dab
--- /dev/null
+++ b/drivers/pinctrl/rockchip/pinctrl_rk3188.c
@@ -0,0 +1,611 @@
+/*
+ * Pinctrl driver for Rockchip RK3188 SoCs
+ * Copyright (c) 2016 Heiko Stuebner <heiko@sntech.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <syscon.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/grf_rk3188.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/periph.h>
+#include <asm/arch/pmu_rk3188.h>
+#include <dm/pinctrl.h>
+#include <dm/root.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct rk3188_pinctrl_priv {
+	struct rk3188_grf *grf;
+	struct rk3188_pmu *pmu;
+	int num_banks;
+};
+
+/**
+ * Encode variants of iomux registers into a type variable
+ */
+#define IOMUX_GPIO_ONLY		BIT(0)
+
+/**
+ * @type: iomux variant using IOMUX_* constants
+ * @offset: if initialized to -1 it will be autocalculated, by specifying
+ *	    an initial offset value the relevant source offset can be reset
+ *	    to a new value for autocalculating the following iomux registers.
+ */
+struct rockchip_iomux {
+	u8 type;
+	s16 offset;
+};
+
+/**
+ * @reg: register offset of the gpio bank
+ * @nr_pins: number of pins in this bank
+ * @bank_num: number of the bank, to account for holes
+ * @name: name of the bank
+ * @iomux: array describing the 4 iomux sources of the bank
+ */
+struct rockchip_pin_bank {
+	u16 reg;
+	u8 nr_pins;
+	u8 bank_num;
+	char *name;
+	struct rockchip_iomux iomux[4];
+};
+
+#define PIN_BANK(id, pins, label)			\
+	{						\
+		.bank_num	= id,			\
+		.nr_pins	= pins,			\
+		.name		= label,		\
+		.iomux		= {			\
+			{ .offset = -1 },		\
+			{ .offset = -1 },		\
+			{ .offset = -1 },		\
+			{ .offset = -1 },		\
+		},					\
+	}
+
+#define PIN_BANK_IOMUX_FLAGS(id, pins, label, iom0, iom1, iom2, iom3)	\
+	{								\
+		.bank_num	= id,					\
+		.nr_pins	= pins,					\
+		.name		= label,				\
+		.iomux		= {					\
+			{ .type = iom0, .offset = -1 },			\
+			{ .type = iom1, .offset = -1 },			\
+			{ .type = iom2, .offset = -1 },			\
+			{ .type = iom3, .offset = -1 },			\
+		},							\
+	}
+
+#ifndef CONFIG_SPL_BUILD
+static struct rockchip_pin_bank rk3188_pin_banks[] = {
+	PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", IOMUX_GPIO_ONLY, 0, 0, 0),
+	PIN_BANK(1, 32, "gpio1"),
+	PIN_BANK(2, 32, "gpio2"),
+	PIN_BANK(3, 32, "gpio3"),
+};
+#endif
+
+static void pinctrl_rk3188_pwm_config(struct rk3188_grf *grf, int pwm_id)
+{
+	switch (pwm_id) {
+	case PERIPH_ID_PWM0:
+		rk_clrsetreg(&grf->gpio3d_iomux, GPIO3D3_MASK << GPIO3D3_SHIFT,
+			     GPIO3D3_PWM_0 << GPIO3D3_SHIFT);
+		break;
+	case PERIPH_ID_PWM1:
+		rk_clrsetreg(&grf->gpio3d_iomux, GPIO3D4_MASK << GPIO3D4_SHIFT,
+			     GPIO3D4_PWM_1 << GPIO3D4_SHIFT);
+		break;
+	case PERIPH_ID_PWM2:
+		rk_clrsetreg(&grf->gpio3d_iomux, GPIO3D5_MASK << GPIO3D5_SHIFT,
+			     GPIO3D5_PWM_2 << GPIO3D5_SHIFT);
+		break;
+	case PERIPH_ID_PWM3:
+		rk_clrsetreg(&grf->gpio3d_iomux, GPIO3D6_MASK << GPIO3D6_SHIFT,
+			     GPIO3D6_PWM_3 << GPIO3D6_SHIFT);
+		break;
+	default:
+		debug("pwm id = %d iomux error!\n", pwm_id);
+		break;
+	}
+}
+
+static void pinctrl_rk3188_i2c_config(struct rk3188_grf *grf,
+				      struct rk3188_pmu *pmu, int i2c_id)
+{
+	switch (i2c_id) {
+	case PERIPH_ID_I2C0:
+		rk_clrsetreg(&grf->gpio1d_iomux,
+				GPIO1D1_MASK << GPIO1D1_SHIFT |
+				GPIO1D0_MASK << GPIO1D0_SHIFT,
+				GPIO1D1_I2C0_SCL << GPIO1D1_SHIFT |
+				GPIO1D0_I2C0_SDA << GPIO1D0_SHIFT);
+		/* enable new i2c controller */
+		rk_clrsetreg(&grf->soc_con1, 1 << RKI2C0_SEL_SHIFT,
+					     1 << RKI2C0_SEL_SHIFT);
+		break;
+	case PERIPH_ID_I2C1:
+		rk_clrsetreg(&grf->gpio1d_iomux,
+				GPIO1D3_MASK << GPIO1D3_SHIFT |
+				GPIO1D2_MASK << GPIO1D2_SHIFT,
+				GPIO1D3_I2C1_SCL << GPIO1D2_SHIFT |
+				GPIO1D2_I2C1_SDA << GPIO1D2_SHIFT);
+		rk_clrsetreg(&grf->soc_con1, 1 << RKI2C1_SEL_SHIFT,
+					     1 << RKI2C1_SEL_SHIFT);
+		break;
+	case PERIPH_ID_I2C2:
+		rk_clrsetreg(&grf->gpio1d_iomux,
+				GPIO1D5_MASK << GPIO1D5_SHIFT |
+				GPIO1D4_MASK << GPIO1D4_SHIFT,
+				GPIO1D5_I2C2_SCL << GPIO1D5_SHIFT |
+				GPIO1D4_I2C2_SDA << GPIO1D4_SHIFT);
+		rk_clrsetreg(&grf->soc_con1, 1 << RKI2C2_SEL_SHIFT,
+					     1 << RKI2C2_SEL_SHIFT);
+		break;
+	case PERIPH_ID_I2C3:
+		rk_clrsetreg(&grf->gpio3b_iomux,
+				GPIO3B7_MASK << GPIO3B7_SHIFT |
+				GPIO3B6_MASK << GPIO3B6_SHIFT,
+				GPIO3B7_I2C3_SCL << GPIO3B7_SHIFT |
+				GPIO3B6_I2C3_SDA << GPIO3B6_SHIFT);
+		rk_clrsetreg(&grf->soc_con1, 1 << RKI2C3_SEL_SHIFT,
+					     1 << RKI2C3_SEL_SHIFT);
+		break;
+	case PERIPH_ID_I2C4:
+		rk_clrsetreg(&grf->gpio1d_iomux,
+				GPIO1D7_MASK << GPIO1D7_SHIFT |
+				GPIO1D6_MASK << GPIO1D6_SHIFT,
+				GPIO1D7_I2C4_SCL << GPIO1D7_SHIFT |
+				GPIO1D6_I2C4_SDA << GPIO1D6_SHIFT);
+		rk_clrsetreg(&grf->soc_con1, 1 << RKI2C4_SEL_SHIFT,
+					     1 << RKI2C4_SEL_SHIFT);
+		break;
+	default:
+		debug("i2c id = %d iomux error!\n", i2c_id);
+		break;
+	}
+}
+
+static int pinctrl_rk3188_spi_config(struct rk3188_grf *grf,
+				     enum periph_id spi_id, int cs)
+{
+	switch (spi_id) {
+	case PERIPH_ID_SPI0:
+		switch (cs) {
+		case 0:
+			rk_clrsetreg(&grf->gpio1a_iomux,
+				     GPIO1A7_MASK << GPIO1A7_SHIFT,
+				     GPIO1A7_SPI0_CSN0 << GPIO1A7_SHIFT);
+			break;
+		case 1:
+			rk_clrsetreg(&grf->gpio1b_iomux,
+				     GPIO1B7_MASK << GPIO1B7_SHIFT,
+				     GPIO1B7_SPI0_CSN1 << GPIO1B7_SHIFT);
+			break;
+		default:
+			goto err;
+		}
+		rk_clrsetreg(&grf->gpio1a_iomux,
+			     GPIO1A4_MASK << GPIO1A4_SHIFT |
+			     GPIO1A5_MASK << GPIO1A5_SHIFT |
+			     GPIO1A6_MASK << GPIO1A6_SHIFT,
+			     GPIO1A4_SPI0_RXD << GPIO1A4_SHIFT |
+			     GPIO1A5_SPI0_TXD << GPIO1A5_SHIFT |
+			     GPIO1A6_SPI0_CLK << GPIO1A6_SHIFT);
+		break;
+	case PERIPH_ID_SPI1:
+		switch (cs) {
+		case 0:
+			rk_clrsetreg(&grf->gpio0d_iomux,
+				     GPIO0D7_MASK << GPIO0D7_SHIFT,
+				     GPIO0D7_SPI1_CSN0 << GPIO0D7_SHIFT);
+			break;
+		case 1:
+			rk_clrsetreg(&grf->gpio1b_iomux,
+				     GPIO1B6_MASK << GPIO1B6_SHIFT,
+				     GPIO1B6_SPI1_CSN1 << GPIO1B6_SHIFT);
+			break;
+		default:
+			goto err;
+		}
+		rk_clrsetreg(&grf->gpio0d_iomux,
+			     GPIO0D4_MASK << GPIO0D4_SHIFT |
+			     GPIO0D5_MASK << GPIO0D5_SHIFT |
+			     GPIO0D6_MASK << GPIO0D6_SHIFT,
+			     GPIO0D4_SPI0_RXD << GPIO0D4_SHIFT |
+			     GPIO0D5_SPI1_TXD << GPIO0D5_SHIFT |
+			     GPIO0D6_SPI1_CLK << GPIO0D6_SHIFT);
+		break;
+	default:
+		goto err;
+	}
+
+	return 0;
+err:
+	debug("rkspi: periph%d cs=%d not supported", spi_id, cs);
+	return -ENOENT;
+}
+
+static void pinctrl_rk3188_uart_config(struct rk3188_grf *grf, int uart_id)
+{
+	switch (uart_id) {
+	case PERIPH_ID_UART0:
+		rk_clrsetreg(&grf->gpio1a_iomux,
+			     GPIO1A3_MASK << GPIO1A3_SHIFT |
+			     GPIO1A2_MASK << GPIO1A2_SHIFT |
+			     GPIO1A1_MASK << GPIO1A1_SHIFT |
+			     GPIO1A0_MASK << GPIO1A0_SHIFT,
+			     GPIO1A3_UART0_RTS_N << GPIO1A3_SHIFT |
+			     GPIO1A2_UART0_CTS_N << GPIO1A2_SHIFT |
+			     GPIO1A1_UART0_SOUT << GPIO1A1_SHIFT |
+			     GPIO1A0_UART0_SIN << GPIO1A0_SHIFT);
+		break;
+	case PERIPH_ID_UART1:
+		rk_clrsetreg(&grf->gpio1a_iomux,
+			     GPIO1A7_MASK << GPIO1A7_SHIFT |
+			     GPIO1A6_MASK << GPIO1A6_SHIFT |
+			     GPIO1A5_MASK << GPIO1A5_SHIFT |
+			     GPIO1A4_MASK << GPIO1A4_SHIFT,
+			     GPIO1A7_UART1_RTS_N << GPIO1A7_SHIFT |
+			     GPIO1A6_UART1_CTS_N << GPIO1A6_SHIFT |
+			     GPIO1A5_UART1_SOUT << GPIO1A5_SHIFT |
+			     GPIO1A4_UART1_SIN << GPIO1A4_SHIFT);
+		break;
+	case PERIPH_ID_UART2:
+		rk_clrsetreg(&grf->gpio1b_iomux,
+			     GPIO1B1_MASK << GPIO1B1_SHIFT |
+			     GPIO1B0_MASK << GPIO1B0_SHIFT,
+			     GPIO1B1_UART2_SOUT << GPIO1B1_SHIFT |
+			     GPIO1B0_UART2_SIN << GPIO1B0_SHIFT);
+		break;
+	case PERIPH_ID_UART3:
+		rk_clrsetreg(&grf->gpio1b_iomux,
+			     GPIO1B5_MASK << GPIO1B5_SHIFT |
+			     GPIO1B4_MASK << GPIO1B4_SHIFT |
+			     GPIO1B3_MASK << GPIO1B3_SHIFT |
+			     GPIO1B2_MASK << GPIO1B2_SHIFT,
+			     GPIO1B5_UART3_RTS_N << GPIO1B5_SHIFT |
+			     GPIO1B4_UART3_CTS_N << GPIO1B4_SHIFT |
+			     GPIO1B3_UART3_SOUT << GPIO1B3_SHIFT |
+			     GPIO1B2_UART3_SIN << GPIO1B2_SHIFT);
+		break;
+	default:
+		debug("uart id = %d iomux error!\n", uart_id);
+		break;
+	}
+}
+
+static void pinctrl_rk3188_sdmmc_config(struct rk3188_grf *grf, int mmc_id)
+{
+	switch (mmc_id) {
+	case PERIPH_ID_EMMC:
+		rk_clrsetreg(&grf->soc_con0, 1 << EMMC_FLASH_SEL_SHIFT,
+					     1 << EMMC_FLASH_SEL_SHIFT);
+		rk_clrsetreg(&grf->gpio0d_iomux,
+			     GPIO0D2_MASK << GPIO0D2_SHIFT |
+			     GPIO0D0_MASK << GPIO0D0_SHIFT,
+			     GPIO0D2_EMMC_CMD << GPIO0D2_SHIFT |
+			     GPIO0D0_EMMC_CLKOUT << GPIO0D0_SHIFT);
+		break;
+	case PERIPH_ID_SDCARD:
+		rk_clrsetreg(&grf->gpio3b_iomux,
+			     GPIO3B0_MASK << GPIO3B0_SHIFT,
+			     GPIO3B0_SDMMC_DETECT_N << GPIO3B0_SHIFT);
+		rk_clrsetreg(&grf->gpio3a_iomux,
+			     GPIO3A7_MASK << GPIO3A7_SHIFT |
+			     GPIO3A6_MASK << GPIO3A6_SHIFT |
+			     GPIO3A5_MASK << GPIO3A5_SHIFT |
+			     GPIO3A4_MASK << GPIO3A4_SHIFT |
+			     GPIO3A3_MASK << GPIO3A3_SHIFT |
+			     GPIO3A3_MASK << GPIO3A2_SHIFT,
+			     GPIO3A7_SDMMC0_DATA3 << GPIO3A7_SHIFT |
+			     GPIO3A6_SDMMC0_DATA2 << GPIO3A6_SHIFT |
+			     GPIO3A5_SDMMC0_DATA1 << GPIO3A5_SHIFT |
+			     GPIO3A4_SDMMC0_DATA0 << GPIO3A4_SHIFT |
+			     GPIO3A3_SDMMC0_CMD << GPIO3A3_SHIFT |
+			     GPIO3A2_SDMMC0_CLKOUT << GPIO3A2_SHIFT);
+		break;
+	default:
+		debug("mmc id = %d iomux error!\n", mmc_id);
+		break;
+	}
+}
+
+static int rk3188_pinctrl_request(struct udevice *dev, int func, int flags)
+{
+	struct rk3188_pinctrl_priv *priv = dev_get_priv(dev);
+
+	debug("%s: func=%x, flags=%x\n", __func__, func, flags);
+	switch (func) {
+	case PERIPH_ID_PWM0:
+	case PERIPH_ID_PWM1:
+	case PERIPH_ID_PWM2:
+	case PERIPH_ID_PWM3:
+	case PERIPH_ID_PWM4:
+		pinctrl_rk3188_pwm_config(priv->grf, func);
+		break;
+	case PERIPH_ID_I2C0:
+	case PERIPH_ID_I2C1:
+	case PERIPH_ID_I2C2:
+	case PERIPH_ID_I2C3:
+	case PERIPH_ID_I2C4:
+	case PERIPH_ID_I2C5:
+		pinctrl_rk3188_i2c_config(priv->grf, priv->pmu, func);
+		break;
+	case PERIPH_ID_SPI0:
+	case PERIPH_ID_SPI1:
+	case PERIPH_ID_SPI2:
+		pinctrl_rk3188_spi_config(priv->grf, func, flags);
+		break;
+	case PERIPH_ID_UART0:
+	case PERIPH_ID_UART1:
+	case PERIPH_ID_UART2:
+	case PERIPH_ID_UART3:
+	case PERIPH_ID_UART4:
+		pinctrl_rk3188_uart_config(priv->grf, func);
+		break;
+		break;
+	case PERIPH_ID_SDMMC0:
+	case PERIPH_ID_SDMMC1:
+		pinctrl_rk3188_sdmmc_config(priv->grf, func);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int rk3188_pinctrl_get_periph_id(struct udevice *dev,
+					struct udevice *periph)
+{
+#if !CONFIG_IS_ENABLED(OF_PLATDATA)
+	u32 cell[3];
+	int ret;
+
+	ret = fdtdec_get_int_array(gd->fdt_blob, periph->of_offset,
+				   "interrupts", cell, ARRAY_SIZE(cell));
+	if (ret < 0)
+		return -EINVAL;
+
+	switch (cell[1]) {
+	case 44:
+		return PERIPH_ID_SPI0;
+	case 45:
+		return PERIPH_ID_SPI1;
+	case 46:
+		return PERIPH_ID_SPI2;
+	case 60:
+		return PERIPH_ID_I2C0;
+	case 62: /* Note strange order */
+		return PERIPH_ID_I2C1;
+	case 61:
+		return PERIPH_ID_I2C2;
+	case 63:
+		return PERIPH_ID_I2C3;
+	case 64:
+		return PERIPH_ID_I2C4;
+	case 65:
+		return PERIPH_ID_I2C5;
+	}
+#endif
+
+	return -ENOENT;
+}
+
+static int rk3188_pinctrl_set_state_simple(struct udevice *dev,
+					   struct udevice *periph)
+{
+	int func;
+
+	func = rk3188_pinctrl_get_periph_id(dev, periph);
+	if (func < 0)
+		return func;
+	return rk3188_pinctrl_request(dev, func, 0);
+}
+
+#ifndef CONFIG_SPL_BUILD
+int rk3188_pinctrl_get_pin_info(struct rk3188_pinctrl_priv *priv,
+				int banknum, int ind, u32 **addrp, uint *shiftp,
+				uint *maskp)
+{
+	struct rockchip_pin_bank *bank = &rk3188_pin_banks[banknum];
+	uint muxnum;
+	u32 *addr;
+
+	for (muxnum = 0; muxnum < 4; muxnum++) {
+		struct rockchip_iomux *mux = &bank->iomux[muxnum];
+
+		if (ind >= 8) {
+			ind -= 8;
+			continue;
+		}
+
+		addr = &priv->grf->gpio0c_iomux - 2;
+		addr += mux->offset;
+		*shiftp = ind & 7;
+		*maskp = 3;
+		*shiftp *= 2;
+
+		debug("%s: addr=%p, mask=%x, shift=%x\n", __func__, addr,
+		      *maskp, *shiftp);
+		*addrp = addr;
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+static int rk3188_pinctrl_get_gpio_mux(struct udevice *dev, int banknum,
+				       int index)
+{
+	struct rk3188_pinctrl_priv *priv = dev_get_priv(dev);
+	uint shift;
+	uint mask;
+	u32 *addr;
+	int ret;
+
+	ret = rk3188_pinctrl_get_pin_info(priv, banknum, index, &addr, &shift,
+					  &mask);
+	if (ret)
+		return ret;
+	return (readl(addr) & mask) >> shift;
+}
+
+static int rk3188_pinctrl_set_pins(struct udevice *dev, int banknum, int index,
+				   int muxval, int flags)
+{
+	struct rk3188_pinctrl_priv *priv = dev_get_priv(dev);
+	uint shift, ind = index;
+	uint mask;
+	u32 *addr;
+	int ret;
+
+	debug("%s: %x %x %x %x\n", __func__, banknum, index, muxval, flags);
+	ret = rk3188_pinctrl_get_pin_info(priv, banknum, index, &addr, &shift,
+					  &mask);
+	if (ret)
+		return ret;
+	rk_clrsetreg(addr, mask << shift, muxval << shift);
+
+	/* Handle pullup/pulldown */
+	if (flags) {
+		uint val = 0;
+
+		if (flags & (1 << PIN_CONFIG_BIAS_PULL_UP))
+			val = 1;
+		else if (flags & (1 << PIN_CONFIG_BIAS_PULL_DOWN))
+			val = 2;
+
+		ind = index >> 3;
+
+		if (banknum == 0 && index < 12) {
+			addr = &priv->pmu->gpio0_p[ind];
+			shift = (index & 7) * 2;
+		} else if (banknum == 0 && index >= 12) {
+			addr = &priv->grf->gpio0_p[ind - 1];
+			/*
+			 * The bits in the grf-registers have an inverse
+			 * ordering with the lowest pin being in bits 15:14
+			 * and the highest pin in bits 1:0 .
+			 */
+			shift = (7 - (index & 7)) * 2;
+		} else {
+			addr = &priv->grf->gpio1_p[banknum - 1][ind];
+			shift = (7 - (index & 7)) * 2;
+		}
+		debug("%s: addr=%p, val=%x, shift=%x\n", __func__, addr, val,
+		      shift);
+		rk_clrsetreg(addr, 3 << shift, val << shift);
+	}
+
+	return 0;
+}
+
+static int rk3188_pinctrl_set_state(struct udevice *dev, struct udevice *config)
+{
+	const void *blob = gd->fdt_blob;
+	int pcfg_node, ret, flags, count, i;
+	u32 cell[60], *ptr;
+
+	debug("%s: %s %s\n", __func__, dev->name, config->name);
+	ret = fdtdec_get_int_array_count(blob, config->of_offset,
+					 "rockchip,pins", cell,
+					 ARRAY_SIZE(cell));
+	if (ret < 0) {
+		debug("%s: bad array %d\n", __func__, ret);
+		return -EINVAL;
+	}
+	count = ret;
+	for (i = 0, ptr = cell; i < count; i += 4, ptr += 4) {
+		pcfg_node = fdt_node_offset_by_phandle(blob, ptr[3]);
+		if (pcfg_node < 0)
+			return -EINVAL;
+		flags = pinctrl_decode_pin_config(blob, pcfg_node);
+		if (flags < 0)
+			return flags;
+
+		ret = rk3188_pinctrl_set_pins(dev, ptr[0], ptr[1], ptr[2],
+					      flags);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+#endif
+
+static struct pinctrl_ops rk3188_pinctrl_ops = {
+#ifndef CONFIG_SPL_BUILD
+	.set_state	= rk3188_pinctrl_set_state,
+	.get_gpio_mux	= rk3188_pinctrl_get_gpio_mux,
+#endif
+	.set_state_simple	= rk3188_pinctrl_set_state_simple,
+	.request	= rk3188_pinctrl_request,
+	.get_periph_id	= rk3188_pinctrl_get_periph_id,
+};
+
+#ifndef CONFIG_SPL_BUILD
+static int rk3188_pinctrl_parse_tables(struct rk3188_pinctrl_priv *priv,
+				       struct rockchip_pin_bank *banks,
+				       int count)
+{
+	struct rockchip_pin_bank *bank;
+	uint reg, muxnum, banknum;
+
+	reg = 0;
+	for (banknum = 0; banknum < count; banknum++) {
+		bank = &banks[banknum];
+		bank->reg = reg;
+		debug("%s: bank %d, reg %x\n", __func__, banknum, reg * 4);
+		for (muxnum = 0; muxnum < 4; muxnum++) {
+			struct rockchip_iomux *mux = &bank->iomux[muxnum];
+
+			mux->offset = reg;
+			reg += 1;
+		}
+	}
+
+	return 0;
+}
+#endif
+
+static int rk3188_pinctrl_probe(struct udevice *dev)
+{
+	struct rk3188_pinctrl_priv *priv = dev_get_priv(dev);
+	int ret = 0;
+
+	priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
+	priv->pmu = syscon_get_first_range(ROCKCHIP_SYSCON_PMU);
+	debug("%s: grf=%p, pmu=%p\n", __func__, priv->grf, priv->pmu);
+#ifndef CONFIG_SPL_BUILD
+	ret = rk3188_pinctrl_parse_tables(priv, rk3188_pin_banks,
+					  ARRAY_SIZE(rk3188_pin_banks));
+#endif
+
+	return ret;
+}
+
+static const struct udevice_id rk3188_pinctrl_ids[] = {
+	{ .compatible = "rockchip,rk3188-pinctrl" },
+	{ }
+};
+
+U_BOOT_DRIVER(pinctrl_rk3188) = {
+	.name		= "rockchip_rk3188_pinctrl",
+	.id		= UCLASS_PINCTRL,
+	.of_match	= rk3188_pinctrl_ids,
+	.priv_auto_alloc_size = sizeof(struct rk3188_pinctrl_priv),
+	.ops		= &rk3188_pinctrl_ops,
+#if !CONFIG_IS_ENABLED(OF_PLATDATA)
+	.bind		= dm_scan_fdt_dev,
+#endif
+	.probe		= rk3188_pinctrl_probe,
+};