2 * Pinctrl driver for Rockchip 3036 SoCs
3 * (C) Copyright 2015 Rockchip Electronics Co., Ltd
5 * SPDX-License-Identifier: GPL-2.0+
13 #include <asm/arch/clock.h>
14 #include <asm/arch/grf_rk3036.h>
15 #include <asm/arch/hardware.h>
16 #include <asm/arch/periph.h>
17 #include <dm/pinctrl.h>
20 DECLARE_GLOBAL_DATA_PTR;
22 struct rk3036_pinctrl_priv {
23 struct rk3036_grf *grf;
26 static void pinctrl_rk3036_pwm_config(struct rk3036_grf *grf, int pwm_id)
30 rk_clrsetreg(&grf->gpio0d_iomux, GPIO0D2_MASK << GPIO0D2_SHIFT,
31 GPIO0D2_PWM0 << GPIO0D2_SHIFT);
34 rk_clrsetreg(&grf->gpio0a_iomux, GPIO0A0_MASK << GPIO0A0_SHIFT,
35 GPIO0A0_PWM1 << GPIO0A0_SHIFT);
38 rk_clrsetreg(&grf->gpio0a_iomux, GPIO0A1_MASK << GPIO0A1_SHIFT,
39 GPIO0A1_PWM2 << GPIO0A1_SHIFT);
42 rk_clrsetreg(&grf->gpio0a_iomux, GPIO0D3_MASK << GPIO0D3_SHIFT,
43 GPIO0D3_PWM3 << GPIO0D3_SHIFT);
46 debug("pwm id = %d iomux error!\n", pwm_id);
51 static void pinctrl_rk3036_i2c_config(struct rk3036_grf *grf, int i2c_id)
55 rk_clrsetreg(&grf->gpio0a_iomux,
56 GPIO0A1_MASK << GPIO0A1_SHIFT |
57 GPIO0A0_MASK << GPIO0A0_SHIFT,
58 GPIO0A1_I2C0_SDA << GPIO0A1_SHIFT |
59 GPIO0A0_I2C0_SCL << GPIO0A0_SHIFT);
63 rk_clrsetreg(&grf->gpio0a_iomux,
64 GPIO0A3_MASK << GPIO0A3_SHIFT |
65 GPIO0A2_MASK << GPIO0A2_SHIFT,
66 GPIO0A3_I2C1_SDA << GPIO0A3_SHIFT |
67 GPIO0A2_I2C1_SCL << GPIO0A2_SHIFT);
70 rk_clrsetreg(&grf->gpio2c_iomux,
71 GPIO2C5_MASK << GPIO2C5_SHIFT |
72 GPIO2C4_MASK << GPIO2C4_SHIFT,
73 GPIO2C5_I2C2_SCL << GPIO2C5_SHIFT |
74 GPIO2C4_I2C2_SDA << GPIO2C4_SHIFT);
80 static void pinctrl_rk3036_spi_config(struct rk3036_grf *grf, int cs)
84 rk_clrsetreg(&grf->gpio1d_iomux,
85 GPIO1D6_MASK << GPIO1D6_SHIFT,
86 GPIO1D6_SPI_CSN0 << GPIO1D6_SHIFT);
89 rk_clrsetreg(&grf->gpio1d_iomux,
90 GPIO1D7_MASK << GPIO1D7_SHIFT,
91 GPIO1D7_SPI_CSN1 << GPIO1D7_SHIFT);
94 rk_clrsetreg(&grf->gpio1d_iomux,
95 GPIO1D5_MASK << GPIO1D5_SHIFT |
96 GPIO1D4_MASK << GPIO1D4_SHIFT,
97 GPIO1D5_SPI_TXD << GPIO1D5_SHIFT |
98 GPIO1D4_SPI_RXD << GPIO1D4_SHIFT);
100 rk_clrsetreg(&grf->gpio2a_iomux,
101 GPIO2A0_MASK << GPIO2A0_SHIFT,
102 GPIO2A0_SPI_CLK << GPIO2A0_SHIFT);
105 static void pinctrl_rk3036_uart_config(struct rk3036_grf *grf, int uart_id)
108 case PERIPH_ID_UART0:
109 rk_clrsetreg(&grf->gpio0c_iomux,
110 GPIO0C3_MASK << GPIO0C3_SHIFT |
111 GPIO0C2_MASK << GPIO0C2_SHIFT |
112 GPIO0C1_MASK << GPIO0C1_SHIFT |
113 GPIO0C0_MASK << GPIO0C0_SHIFT,
114 GPIO0C3_UART0_CTSN << GPIO0C3_SHIFT |
115 GPIO0C2_UART0_RTSN << GPIO0C2_SHIFT |
116 GPIO0C1_UART0_SIN << GPIO0C1_SHIFT |
117 GPIO0C0_UART0_SOUT << GPIO0C0_SHIFT);
119 case PERIPH_ID_UART1:
120 rk_clrsetreg(&grf->gpio2c_iomux,
121 GPIO2C7_MASK << GPIO2C7_SHIFT |
122 GPIO2C6_MASK << GPIO2C6_SHIFT,
123 GPIO2C7_UART1_SOUT << GPIO2C7_SHIFT |
124 GPIO2C6_UART1_SIN << GPIO2C6_SHIFT);
126 case PERIPH_ID_UART2:
127 rk_clrsetreg(&grf->gpio1c_iomux,
128 GPIO1C3_MASK << GPIO1C3_SHIFT |
129 GPIO1C2_MASK << GPIO1C2_SHIFT,
130 GPIO1C3_UART2_SOUT << GPIO1C3_SHIFT |
131 GPIO1C2_UART2_SIN << GPIO1C2_SHIFT);
136 static void pinctrl_rk3036_sdmmc_config(struct rk3036_grf *grf, int mmc_id)
140 rk_clrsetreg(&grf->gpio1d_iomux, 0xffff,
141 GPIO1D7_EMMC_D7 << GPIO1D7_SHIFT |
142 GPIO1D6_EMMC_D6 << GPIO1D6_SHIFT |
143 GPIO1D5_EMMC_D5 << GPIO1D5_SHIFT |
144 GPIO1D4_EMMC_D4 << GPIO1D4_SHIFT |
145 GPIO1D3_EMMC_D3 << GPIO1D3_SHIFT |
146 GPIO1D2_EMMC_D2 << GPIO1D2_SHIFT |
147 GPIO1D1_EMMC_D1 << GPIO1D1_SHIFT |
148 GPIO1D0_EMMC_D0 << GPIO1D0_SHIFT);
149 rk_clrsetreg(&grf->gpio2a_iomux,
150 GPIO2A4_MASK << GPIO2A4_SHIFT |
151 GPIO2A1_MASK << GPIO2A1_SHIFT,
152 GPIO2A4_EMMC_CMD << GPIO2A4_SHIFT |
153 GPIO2A1_EMMC_CLKOUT << GPIO2A1_SHIFT);
155 case PERIPH_ID_SDCARD:
156 rk_clrsetreg(&grf->gpio1c_iomux, 0xffff,
157 GPIO1C5_MMC0_D3 << GPIO1C5_SHIFT |
158 GPIO1C4_MMC0_D2 << GPIO1C4_SHIFT |
159 GPIO1C3_MMC0_D1 << GPIO1C3_SHIFT |
160 GPIO1C2_MMC0_D0 << GPIO1C2_SHIFT |
161 GPIO1C1_MMC0_DETN << GPIO1C1_SHIFT |
162 GPIO1C0_MMC0_CLKOUT << GPIO1C0_SHIFT);
167 static int rk3036_pinctrl_request(struct udevice *dev, int func, int flags)
169 struct rk3036_pinctrl_priv *priv = dev_get_priv(dev);
171 debug("%s: func=%x, flags=%x\n", __func__, func, flags);
177 pinctrl_rk3036_pwm_config(priv->grf, func);
182 pinctrl_rk3036_i2c_config(priv->grf, func);
185 pinctrl_rk3036_spi_config(priv->grf, flags);
187 case PERIPH_ID_UART0:
188 case PERIPH_ID_UART1:
189 case PERIPH_ID_UART2:
190 pinctrl_rk3036_uart_config(priv->grf, func);
192 case PERIPH_ID_SDMMC0:
193 case PERIPH_ID_SDMMC1:
194 pinctrl_rk3036_sdmmc_config(priv->grf, func);
203 static int rk3036_pinctrl_get_periph_id(struct udevice *dev,
204 struct udevice *periph)
209 ret = fdtdec_get_int_array(gd->fdt_blob, periph->of_offset,
210 "interrupts", cell, ARRAY_SIZE(cell));
216 return PERIPH_ID_SDCARD;
218 return PERIPH_ID_EMMC;
220 return PERIPH_ID_UART0;
222 return PERIPH_ID_UART1;
224 return PERIPH_ID_UART2;
226 return PERIPH_ID_SPI0;
228 return PERIPH_ID_I2C0;
230 return PERIPH_ID_I2C1;
232 return PERIPH_ID_I2C2;
234 return PERIPH_ID_PWM0;
239 static int rk3036_pinctrl_set_state_simple(struct udevice *dev,
240 struct udevice *periph)
244 func = rk3036_pinctrl_get_periph_id(dev, periph);
247 return rk3036_pinctrl_request(dev, func, 0);
250 static struct pinctrl_ops rk3036_pinctrl_ops = {
251 .set_state_simple = rk3036_pinctrl_set_state_simple,
252 .request = rk3036_pinctrl_request,
253 .get_periph_id = rk3036_pinctrl_get_periph_id,
256 static int rk3036_pinctrl_bind(struct udevice *dev)
258 /* scan child GPIO banks */
259 return dm_scan_fdt_node(dev, gd->fdt_blob, dev->of_offset, false);
262 static int rk3036_pinctrl_probe(struct udevice *dev)
264 struct rk3036_pinctrl_priv *priv = dev_get_priv(dev);
266 priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
267 debug("%s: grf=%p\n", __func__, priv->grf);
271 static const struct udevice_id rk3036_pinctrl_ids[] = {
272 { .compatible = "rockchip,rk3036-pinctrl" },
276 U_BOOT_DRIVER(pinctrl_rk3036) = {
277 .name = "pinctrl_rk3036",
278 .id = UCLASS_PINCTRL,
279 .of_match = rk3036_pinctrl_ids,
280 .priv_auto_alloc_size = sizeof(struct rk3036_pinctrl_priv),
281 .ops = &rk3036_pinctrl_ops,
282 .bind = rk3036_pinctrl_bind,
283 .probe = rk3036_pinctrl_probe,