mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-11 07:34:31 +00:00
fe450895ff
SDMMC-PWREN is a pin to control voltage for SDMMC IO, it may be high active or low active, the dwmmc driver always assume the sdmmc-pwren as high active. Kernel treat this pin as fixed regulator instead of a pin from controller, and then it can set in dts file upon board schematic, that's a good solution, we can also do this in u-boot. Signed-off-by: Kever Yang <kever.yang@rock-chips.com> Acked-by: Simon Glass <sjg@chromium.org> Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
320 lines
7.5 KiB
C
320 lines
7.5 KiB
C
/*
|
|
* (C) Copyright 2016 Rockchip Electronics Co., Ltd
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <syscon.h>
|
|
#include <asm/arch/clock.h>
|
|
#include <asm/arch/hardware.h>
|
|
#include <asm/arch/grf_rk3328.h>
|
|
#include <asm/arch/periph.h>
|
|
#include <asm/io.h>
|
|
#include <dm/pinctrl.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
struct rk3328_pinctrl_priv {
|
|
struct rk3328_grf_regs *grf;
|
|
};
|
|
|
|
static void pinctrl_rk3328_pwm_config(struct rk3328_grf_regs *grf, int pwm_id)
|
|
{
|
|
switch (pwm_id) {
|
|
case PERIPH_ID_PWM0:
|
|
rk_clrsetreg(&grf->gpio2a_iomux,
|
|
GPIO2A4_SEL_MASK,
|
|
GPIO2A4_PWM_0 << GPIO2A4_SEL_SHIFT);
|
|
break;
|
|
case PERIPH_ID_PWM1:
|
|
rk_clrsetreg(&grf->gpio2a_iomux,
|
|
GPIO2A5_SEL_MASK,
|
|
GPIO2A5_PWM_1 << GPIO2A5_SEL_SHIFT);
|
|
break;
|
|
case PERIPH_ID_PWM2:
|
|
rk_clrsetreg(&grf->gpio2a_iomux,
|
|
GPIO2A6_SEL_MASK,
|
|
GPIO2A6_PWM_2 << GPIO2A6_SEL_SHIFT);
|
|
break;
|
|
case PERIPH_ID_PWM3:
|
|
rk_clrsetreg(&grf->gpio2a_iomux,
|
|
GPIO2A2_SEL_MASK,
|
|
GPIO2A2_PWM_IR << GPIO2A2_SEL_SHIFT);
|
|
break;
|
|
default:
|
|
debug("pwm id = %d iomux error!\n", pwm_id);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void pinctrl_rk3328_i2c_config(struct rk3328_grf_regs *grf, int i2c_id)
|
|
{
|
|
switch (i2c_id) {
|
|
case PERIPH_ID_I2C0:
|
|
rk_clrsetreg(&grf->gpio2d_iomux,
|
|
GPIO2D0_SEL_MASK | GPIO2D1_SEL_MASK,
|
|
GPIO2D0_I2C0_SCL << GPIO2D0_SEL_SHIFT |
|
|
GPIO2D1_I2C0_SDA << GPIO2D1_SEL_SHIFT);
|
|
break;
|
|
case PERIPH_ID_I2C1:
|
|
rk_clrsetreg(&grf->gpio2a_iomux,
|
|
GPIO2A4_SEL_MASK | GPIO2A5_SEL_MASK,
|
|
GPIO2A5_I2C1_SCL << GPIO2A5_SEL_SHIFT |
|
|
GPIO2A4_I2C1_SDA << GPIO2A4_SEL_SHIFT);
|
|
break;
|
|
case PERIPH_ID_I2C2:
|
|
rk_clrsetreg(&grf->gpio2bl_iomux,
|
|
GPIO2BL5_SEL_MASK | GPIO2BL6_SEL_MASK,
|
|
GPIO2BL6_I2C2_SCL << GPIO2BL6_SEL_SHIFT |
|
|
GPIO2BL5_I2C2_SDA << GPIO2BL5_SEL_SHIFT);
|
|
break;
|
|
case PERIPH_ID_I2C3:
|
|
rk_clrsetreg(&grf->gpio0a_iomux,
|
|
GPIO0A5_SEL_MASK | GPIO0A6_SEL_MASK,
|
|
GPIO0A5_I2C3_SCL << GPIO0A5_SEL_SHIFT |
|
|
GPIO0A6_I2C3_SDA << GPIO0A6_SEL_SHIFT);
|
|
break;
|
|
default:
|
|
debug("i2c id = %d iomux error!\n", i2c_id);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void pinctrl_rk3328_lcdc_config(struct rk3328_grf_regs *grf, int lcd_id)
|
|
{
|
|
switch (lcd_id) {
|
|
case PERIPH_ID_LCDC0:
|
|
break;
|
|
default:
|
|
debug("lcdc id = %d iomux error!\n", lcd_id);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int pinctrl_rk3328_spi_config(struct rk3328_grf_regs *grf,
|
|
enum periph_id spi_id, int cs)
|
|
{
|
|
u32 com_iomux = readl(&grf->com_iomux);
|
|
|
|
if ((com_iomux & IOMUX_SEL_SPI_MASK) !=
|
|
IOMUX_SEL_SPI_M0 << IOMUX_SEL_SPI_SHIFT) {
|
|
debug("driver do not support iomux other than m0\n");
|
|
goto err;
|
|
}
|
|
|
|
switch (spi_id) {
|
|
case PERIPH_ID_SPI0:
|
|
switch (cs) {
|
|
case 0:
|
|
rk_clrsetreg(&grf->gpio2bl_iomux,
|
|
GPIO2BL3_SEL_MASK,
|
|
GPIO2BL3_SPI_CSN0_M0
|
|
<< GPIO2BL3_SEL_SHIFT);
|
|
break;
|
|
case 1:
|
|
rk_clrsetreg(&grf->gpio2bl_iomux,
|
|
GPIO2BL4_SEL_MASK,
|
|
GPIO2BL4_SPI_CSN1_M0
|
|
<< GPIO2BL4_SEL_SHIFT);
|
|
break;
|
|
default:
|
|
goto err;
|
|
}
|
|
rk_clrsetreg(&grf->gpio2bl_iomux,
|
|
GPIO2BL0_SEL_MASK,
|
|
GPIO2BL0_SPI_CLK_TX_RX_M0 << GPIO2BL0_SEL_SHIFT);
|
|
break;
|
|
default:
|
|
goto err;
|
|
}
|
|
|
|
return 0;
|
|
err:
|
|
debug("rkspi: periph%d cs=%d not supported", spi_id, cs);
|
|
return -ENOENT;
|
|
}
|
|
|
|
static void pinctrl_rk3328_uart_config(struct rk3328_grf_regs *grf, int uart_id)
|
|
{
|
|
u32 com_iomux = readl(&grf->com_iomux);
|
|
|
|
switch (uart_id) {
|
|
case PERIPH_ID_UART2:
|
|
break;
|
|
if (com_iomux & IOMUX_SEL_UART2_MASK)
|
|
rk_clrsetreg(&grf->gpio2a_iomux,
|
|
GPIO2A0_SEL_MASK | GPIO2A1_SEL_MASK,
|
|
GPIO2A0_UART2_TX_M1 << GPIO2A0_SEL_SHIFT |
|
|
GPIO2A1_UART2_RX_M1 << GPIO2A1_SEL_SHIFT);
|
|
|
|
break;
|
|
case PERIPH_ID_UART0:
|
|
case PERIPH_ID_UART1:
|
|
case PERIPH_ID_UART3:
|
|
case PERIPH_ID_UART4:
|
|
default:
|
|
debug("uart id = %d iomux error!\n", uart_id);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void pinctrl_rk3328_sdmmc_config(struct rk3328_grf_regs *grf,
|
|
int mmc_id)
|
|
{
|
|
u32 com_iomux = readl(&grf->com_iomux);
|
|
|
|
switch (mmc_id) {
|
|
case PERIPH_ID_EMMC:
|
|
rk_clrsetreg(&grf->gpio0a_iomux,
|
|
GPIO0A7_SEL_MASK,
|
|
GPIO0A7_EMMC_DATA0 << GPIO0A7_SEL_SHIFT);
|
|
rk_clrsetreg(&grf->gpio2d_iomux,
|
|
GPIO2D4_SEL_MASK,
|
|
GPIO2D4_EMMC_DATA1234 << GPIO2D4_SEL_SHIFT);
|
|
rk_clrsetreg(&grf->gpio3c_iomux,
|
|
GPIO3C0_SEL_MASK,
|
|
GPIO3C0_EMMC_DATA567_PWR_CLK_RSTN_CMD
|
|
<< GPIO3C0_SEL_SHIFT);
|
|
break;
|
|
case PERIPH_ID_SDCARD:
|
|
/* SDMMC_PWREN use GPIO and init as regulator-fiexed */
|
|
if (com_iomux & IOMUX_SEL_SDMMC_MASK)
|
|
rk_clrsetreg(&grf->gpio0d_iomux,
|
|
GPIO0D6_SEL_MASK,
|
|
GPIO0D6_GPIO << GPIO0D6_SEL_SHIFT);
|
|
else
|
|
rk_clrsetreg(&grf->gpio2a_iomux,
|
|
GPIO2A7_SEL_MASK,
|
|
GPIO2A7_GPIO << GPIO2A7_SEL_SHIFT);
|
|
rk_clrsetreg(&grf->gpio1a_iomux,
|
|
GPIO1A0_SEL_MASK,
|
|
GPIO1A0_CARD_DATA_CLK_CMD_DETN
|
|
<< GPIO1A0_SEL_SHIFT);
|
|
break;
|
|
default:
|
|
debug("mmc id = %d iomux error!\n", mmc_id);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int rk3328_pinctrl_request(struct udevice *dev, int func, int flags)
|
|
{
|
|
struct rk3328_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:
|
|
pinctrl_rk3328_pwm_config(priv->grf, func);
|
|
break;
|
|
case PERIPH_ID_I2C0:
|
|
case PERIPH_ID_I2C1:
|
|
case PERIPH_ID_I2C2:
|
|
case PERIPH_ID_I2C3:
|
|
pinctrl_rk3328_i2c_config(priv->grf, func);
|
|
break;
|
|
case PERIPH_ID_SPI0:
|
|
pinctrl_rk3328_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_rk3328_uart_config(priv->grf, func);
|
|
break;
|
|
case PERIPH_ID_LCDC0:
|
|
case PERIPH_ID_LCDC1:
|
|
pinctrl_rk3328_lcdc_config(priv->grf, func);
|
|
break;
|
|
case PERIPH_ID_SDMMC0:
|
|
case PERIPH_ID_SDMMC1:
|
|
pinctrl_rk3328_sdmmc_config(priv->grf, func);
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rk3328_pinctrl_get_periph_id(struct udevice *dev,
|
|
struct udevice *periph)
|
|
{
|
|
u32 cell[3];
|
|
int ret;
|
|
|
|
ret = dev_read_u32_array(periph, "interrupts", cell, ARRAY_SIZE(cell));
|
|
if (ret < 0)
|
|
return -EINVAL;
|
|
|
|
switch (cell[1]) {
|
|
case 49:
|
|
return PERIPH_ID_SPI0;
|
|
case 50:
|
|
return PERIPH_ID_PWM0;
|
|
case 36:
|
|
return PERIPH_ID_I2C0;
|
|
case 37: /* Note strange order */
|
|
return PERIPH_ID_I2C1;
|
|
case 38:
|
|
return PERIPH_ID_I2C2;
|
|
case 39:
|
|
return PERIPH_ID_I2C3;
|
|
case 12:
|
|
return PERIPH_ID_SDCARD;
|
|
case 14:
|
|
return PERIPH_ID_EMMC;
|
|
}
|
|
|
|
return -ENOENT;
|
|
}
|
|
|
|
static int rk3328_pinctrl_set_state_simple(struct udevice *dev,
|
|
struct udevice *periph)
|
|
{
|
|
int func;
|
|
|
|
func = rk3328_pinctrl_get_periph_id(dev, periph);
|
|
if (func < 0)
|
|
return func;
|
|
|
|
return rk3328_pinctrl_request(dev, func, 0);
|
|
}
|
|
|
|
static struct pinctrl_ops rk3328_pinctrl_ops = {
|
|
.set_state_simple = rk3328_pinctrl_set_state_simple,
|
|
.request = rk3328_pinctrl_request,
|
|
.get_periph_id = rk3328_pinctrl_get_periph_id,
|
|
};
|
|
|
|
static int rk3328_pinctrl_probe(struct udevice *dev)
|
|
{
|
|
struct rk3328_pinctrl_priv *priv = dev_get_priv(dev);
|
|
int ret = 0;
|
|
|
|
priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
|
|
debug("%s: grf=%p\n", __func__, priv->grf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct udevice_id rk3328_pinctrl_ids[] = {
|
|
{ .compatible = "rockchip,rk3328-pinctrl" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(pinctrl_rk3328) = {
|
|
.name = "rockchip_rk3328_pinctrl",
|
|
.id = UCLASS_PINCTRL,
|
|
.of_match = rk3328_pinctrl_ids,
|
|
.priv_auto_alloc_size = sizeof(struct rk3328_pinctrl_priv),
|
|
.ops = &rk3328_pinctrl_ops,
|
|
.bind = dm_scan_fdt_dev,
|
|
.probe = rk3328_pinctrl_probe,
|
|
};
|