2 * (C) Copyright 2017 Rockchip Electronics Co., Ltd
3 * Author: Andy Yan <andy.yan@rock-chips.com>
4 * SPDX-License-Identifier: GPL-2.0+
11 #include <asm/arch/clock.h>
12 #include <asm/arch/hardware.h>
13 #include <asm/arch/grf_rk3368.h>
14 #include <asm/arch/periph.h>
15 #include <dm/pinctrl.h>
17 DECLARE_GLOBAL_DATA_PTR;
19 struct rk3368_pinctrl_priv {
20 struct rk3368_grf *grf;
21 struct rk3368_pmu_grf *pmugrf;
24 static void pinctrl_rk3368_uart_config(struct rk3368_pinctrl_priv *priv,
27 struct rk3368_grf *grf = priv->grf;
28 struct rk3368_pmu_grf *pmugrf = priv->pmugrf;
32 rk_clrsetreg(&grf->gpio2a_iomux,
33 GPIO2A6_MASK | GPIO2A5_MASK,
34 GPIO2A6_UART2_SIN << GPIO2A6_SHIFT |
35 GPIO2A5_UART2_SOUT << GPIO2A5_SHIFT);
44 rk_clrsetreg(&pmugrf->gpio0d_iomux,
45 GPIO0D0_MASK | GPIO0D1_MASK |
46 GPIO0D2_MASK | GPIO0D3_MASK,
47 GPIO0D0_GPIO << GPIO0D0_SHIFT |
48 GPIO0D1_GPIO << GPIO0D1_SHIFT |
49 GPIO0D2_UART4_SOUT << GPIO0D2_SHIFT |
50 GPIO0D3_UART4_SIN << GPIO0D3_SHIFT);
53 debug("uart id = %d iomux error!\n", uart_id);
58 static int rk3368_pinctrl_request(struct udevice *dev, int func, int flags)
60 struct rk3368_pinctrl_priv *priv = dev_get_priv(dev);
62 debug("%s: func=%d, flags=%x\n", __func__, func, flags);
69 pinctrl_rk3368_uart_config(priv, func);
78 static int rk3368_pinctrl_get_periph_id(struct udevice *dev,
79 struct udevice *periph)
84 ret = fdtdec_get_int_array(gd->fdt_blob, dev_of_offset(periph),
85 "interrupts", cell, ARRAY_SIZE(cell));
91 return PERIPH_ID_UART4;
93 return PERIPH_ID_UART3;
95 return PERIPH_ID_UART2;
97 return PERIPH_ID_UART1;
99 return PERIPH_ID_UART0;
105 static int rk3368_pinctrl_set_state_simple(struct udevice *dev,
106 struct udevice *periph)
110 func = rk3368_pinctrl_get_periph_id(dev, periph);
114 return rk3368_pinctrl_request(dev, func, 0);
117 static struct pinctrl_ops rk3368_pinctrl_ops = {
118 .set_state_simple = rk3368_pinctrl_set_state_simple,
119 .request = rk3368_pinctrl_request,
120 .get_periph_id = rk3368_pinctrl_get_periph_id,
123 static int rk3368_pinctrl_probe(struct udevice *dev)
125 struct rk3368_pinctrl_priv *priv = dev_get_priv(dev);
128 priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
129 priv->pmugrf = syscon_get_first_range(ROCKCHIP_SYSCON_PMUGRF);
131 debug("%s: grf=%p pmugrf:%p\n", __func__, priv->grf, priv->pmugrf);
136 static const struct udevice_id rk3368_pinctrl_ids[] = {
137 { .compatible = "rockchip,rk3368-pinctrl" },
141 U_BOOT_DRIVER(pinctrl_rk3368) = {
142 .name = "rockchip_rk3368_pinctrl",
143 .id = UCLASS_PINCTRL,
144 .of_match = rk3368_pinctrl_ids,
145 .priv_auto_alloc_size = sizeof(struct rk3368_pinctrl_priv),
146 .ops = &rk3368_pinctrl_ops,
147 .bind = dm_scan_fdt_dev,
148 .probe = rk3368_pinctrl_probe,