2 * (C) Copyright 2016 Rockchip Electronics Co., Ltd
4 * SPDX-License-Identifier: GPL-2.0+
11 #include <asm/arch/clock.h>
12 #include <asm/arch/hardware.h>
13 #include <asm/arch/grf_rk3328.h>
14 #include <asm/arch/periph.h>
16 #include <dm/pinctrl.h>
18 DECLARE_GLOBAL_DATA_PTR;
20 struct rk3328_pinctrl_priv {
21 struct rk3328_grf_regs *grf;
24 static void pinctrl_rk3328_pwm_config(struct rk3328_grf_regs *grf, int pwm_id)
28 rk_clrsetreg(&grf->gpio2a_iomux,
30 GPIO2A4_PWM_0 << GPIO2A4_SEL_SHIFT);
33 rk_clrsetreg(&grf->gpio2a_iomux,
35 GPIO2A5_PWM_1 << GPIO2A5_SEL_SHIFT);
38 rk_clrsetreg(&grf->gpio2a_iomux,
40 GPIO2A6_PWM_2 << GPIO2A6_SEL_SHIFT);
43 rk_clrsetreg(&grf->gpio2a_iomux,
45 GPIO2A2_PWM_IR << GPIO2A2_SEL_SHIFT);
48 debug("pwm id = %d iomux error!\n", pwm_id);
53 static void pinctrl_rk3328_i2c_config(struct rk3328_grf_regs *grf, int i2c_id)
57 rk_clrsetreg(&grf->gpio2d_iomux,
58 GPIO2D0_SEL_MASK | GPIO2D1_SEL_MASK,
59 GPIO2D0_I2C0_SCL << GPIO2D0_SEL_SHIFT |
60 GPIO2D1_I2C0_SDA << GPIO2D1_SEL_SHIFT);
63 rk_clrsetreg(&grf->gpio2a_iomux,
64 GPIO2A4_SEL_MASK | GPIO2A5_SEL_MASK,
65 GPIO2A5_I2C1_SCL << GPIO2A5_SEL_SHIFT |
66 GPIO2A4_I2C1_SDA << GPIO2A4_SEL_SHIFT);
69 rk_clrsetreg(&grf->gpio2bl_iomux,
70 GPIO2BL5_SEL_MASK | GPIO2BL6_SEL_MASK,
71 GPIO2BL6_I2C2_SCL << GPIO2BL6_SEL_SHIFT |
72 GPIO2BL5_I2C2_SDA << GPIO2BL5_SEL_SHIFT);
75 rk_clrsetreg(&grf->gpio0a_iomux,
76 GPIO0A5_SEL_MASK | GPIO0A6_SEL_MASK,
77 GPIO0A5_I2C3_SCL << GPIO0A5_SEL_SHIFT |
78 GPIO0A6_I2C3_SDA << GPIO0A6_SEL_SHIFT);
81 debug("i2c id = %d iomux error!\n", i2c_id);
86 static void pinctrl_rk3328_lcdc_config(struct rk3328_grf_regs *grf, int lcd_id)
92 debug("lcdc id = %d iomux error!\n", lcd_id);
97 static int pinctrl_rk3328_spi_config(struct rk3328_grf_regs *grf,
98 enum periph_id spi_id, int cs)
100 u32 com_iomux = readl(&grf->com_iomux);
102 if ((com_iomux & IOMUX_SEL_SPI_MASK) !=
103 IOMUX_SEL_SPI_M0 << IOMUX_SEL_SPI_SHIFT) {
104 debug("driver do not support iomux other than m0\n");
112 rk_clrsetreg(&grf->gpio2bl_iomux,
115 << GPIO2BL3_SEL_SHIFT);
118 rk_clrsetreg(&grf->gpio2bl_iomux,
121 << GPIO2BL4_SEL_SHIFT);
126 rk_clrsetreg(&grf->gpio2bl_iomux,
128 GPIO2BL0_SPI_CLK_TX_RX_M0 << GPIO2BL0_SEL_SHIFT);
136 debug("rkspi: periph%d cs=%d not supported", spi_id, cs);
140 static void pinctrl_rk3328_uart_config(struct rk3328_grf_regs *grf, int uart_id)
142 u32 com_iomux = readl(&grf->com_iomux);
145 case PERIPH_ID_UART2:
147 if (com_iomux & IOMUX_SEL_UART2_MASK)
148 rk_clrsetreg(&grf->gpio2a_iomux,
149 GPIO2A0_SEL_MASK | GPIO2A1_SEL_MASK,
150 GPIO2A0_UART2_TX_M1 << GPIO2A0_SEL_SHIFT |
151 GPIO2A1_UART2_RX_M1 << GPIO2A1_SEL_SHIFT);
154 case PERIPH_ID_UART0:
155 case PERIPH_ID_UART1:
156 case PERIPH_ID_UART3:
157 case PERIPH_ID_UART4:
159 debug("uart id = %d iomux error!\n", uart_id);
164 static void pinctrl_rk3328_sdmmc_config(struct rk3328_grf_regs *grf,
167 u32 com_iomux = readl(&grf->com_iomux);
171 rk_clrsetreg(&grf->gpio0a_iomux,
173 GPIO0A7_EMMC_DATA0 << GPIO0A7_SEL_SHIFT);
174 rk_clrsetreg(&grf->gpio2d_iomux,
176 GPIO2D4_EMMC_DATA1234 << GPIO2D4_SEL_SHIFT);
177 rk_clrsetreg(&grf->gpio3c_iomux,
179 GPIO3C0_EMMC_DATA567_PWR_CLK_RSTN_CMD
180 << GPIO3C0_SEL_SHIFT);
182 case PERIPH_ID_SDCARD:
183 /* SDMMC_PWREN use GPIO and init as regulator-fiexed */
184 if (com_iomux & IOMUX_SEL_SDMMC_MASK)
185 rk_clrsetreg(&grf->gpio0d_iomux,
187 GPIO0D6_GPIO << GPIO0D6_SEL_SHIFT);
189 rk_clrsetreg(&grf->gpio2a_iomux,
191 GPIO2A7_GPIO << GPIO2A7_SEL_SHIFT);
192 rk_clrsetreg(&grf->gpio1a_iomux,
194 GPIO1A0_CARD_DATA_CLK_CMD_DETN
195 << GPIO1A0_SEL_SHIFT);
198 debug("mmc id = %d iomux error!\n", mmc_id);
203 static int rk3328_pinctrl_request(struct udevice *dev, int func, int flags)
205 struct rk3328_pinctrl_priv *priv = dev_get_priv(dev);
207 debug("%s: func=%x, flags=%x\n", __func__, func, flags);
213 pinctrl_rk3328_pwm_config(priv->grf, func);
219 pinctrl_rk3328_i2c_config(priv->grf, func);
222 pinctrl_rk3328_spi_config(priv->grf, func, flags);
224 case PERIPH_ID_UART0:
225 case PERIPH_ID_UART1:
226 case PERIPH_ID_UART2:
227 case PERIPH_ID_UART3:
228 case PERIPH_ID_UART4:
229 pinctrl_rk3328_uart_config(priv->grf, func);
231 case PERIPH_ID_LCDC0:
232 case PERIPH_ID_LCDC1:
233 pinctrl_rk3328_lcdc_config(priv->grf, func);
235 case PERIPH_ID_SDMMC0:
236 case PERIPH_ID_SDMMC1:
237 pinctrl_rk3328_sdmmc_config(priv->grf, func);
246 static int rk3328_pinctrl_get_periph_id(struct udevice *dev,
247 struct udevice *periph)
252 ret = dev_read_u32_array(periph, "interrupts", cell, ARRAY_SIZE(cell));
258 return PERIPH_ID_SPI0;
260 return PERIPH_ID_PWM0;
262 return PERIPH_ID_I2C0;
263 case 37: /* Note strange order */
264 return PERIPH_ID_I2C1;
266 return PERIPH_ID_I2C2;
268 return PERIPH_ID_I2C3;
270 return PERIPH_ID_SDCARD;
272 return PERIPH_ID_EMMC;
278 static int rk3328_pinctrl_set_state_simple(struct udevice *dev,
279 struct udevice *periph)
283 func = rk3328_pinctrl_get_periph_id(dev, periph);
287 return rk3328_pinctrl_request(dev, func, 0);
290 static struct pinctrl_ops rk3328_pinctrl_ops = {
291 .set_state_simple = rk3328_pinctrl_set_state_simple,
292 .request = rk3328_pinctrl_request,
293 .get_periph_id = rk3328_pinctrl_get_periph_id,
296 static int rk3328_pinctrl_probe(struct udevice *dev)
298 struct rk3328_pinctrl_priv *priv = dev_get_priv(dev);
301 priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
302 debug("%s: grf=%p\n", __func__, priv->grf);
307 static const struct udevice_id rk3328_pinctrl_ids[] = {
308 { .compatible = "rockchip,rk3328-pinctrl" },
312 U_BOOT_DRIVER(pinctrl_rk3328) = {
313 .name = "rockchip_rk3328_pinctrl",
314 .id = UCLASS_PINCTRL,
315 .of_match = rk3328_pinctrl_ids,
316 .priv_auto_alloc_size = sizeof(struct rk3328_pinctrl_priv),
317 .ops = &rk3328_pinctrl_ops,
318 .bind = dm_scan_fdt_dev,
319 .probe = rk3328_pinctrl_probe,