upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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320 lines
7.5 KiB
320 lines
7.5 KiB
/*
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* (C) Copyright 2016 Rockchip Electronics Co., Ltd
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <syscon.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/hardware.h>
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#include <asm/arch/grf_rk3328.h>
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#include <asm/arch/periph.h>
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#include <asm/io.h>
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#include <dm/pinctrl.h>
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DECLARE_GLOBAL_DATA_PTR;
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struct rk3328_pinctrl_priv {
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struct rk3328_grf_regs *grf;
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};
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static void pinctrl_rk3328_pwm_config(struct rk3328_grf_regs *grf, int pwm_id)
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{
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switch (pwm_id) {
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case PERIPH_ID_PWM0:
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rk_clrsetreg(&grf->gpio2a_iomux,
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GPIO2A4_SEL_MASK,
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GPIO2A4_PWM_0 << GPIO2A4_SEL_SHIFT);
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break;
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case PERIPH_ID_PWM1:
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rk_clrsetreg(&grf->gpio2a_iomux,
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GPIO2A5_SEL_MASK,
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GPIO2A5_PWM_1 << GPIO2A5_SEL_SHIFT);
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break;
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case PERIPH_ID_PWM2:
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rk_clrsetreg(&grf->gpio2a_iomux,
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GPIO2A6_SEL_MASK,
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GPIO2A6_PWM_2 << GPIO2A6_SEL_SHIFT);
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break;
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case PERIPH_ID_PWM3:
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rk_clrsetreg(&grf->gpio2a_iomux,
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GPIO2A2_SEL_MASK,
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GPIO2A2_PWM_IR << GPIO2A2_SEL_SHIFT);
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break;
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default:
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debug("pwm id = %d iomux error!\n", pwm_id);
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break;
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}
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}
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static void pinctrl_rk3328_i2c_config(struct rk3328_grf_regs *grf, int i2c_id)
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{
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switch (i2c_id) {
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case PERIPH_ID_I2C0:
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rk_clrsetreg(&grf->gpio2d_iomux,
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GPIO2D0_SEL_MASK | GPIO2D1_SEL_MASK,
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GPIO2D0_I2C0_SCL << GPIO2D0_SEL_SHIFT |
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GPIO2D1_I2C0_SDA << GPIO2D1_SEL_SHIFT);
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break;
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case PERIPH_ID_I2C1:
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rk_clrsetreg(&grf->gpio2a_iomux,
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GPIO2A4_SEL_MASK | GPIO2A5_SEL_MASK,
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GPIO2A5_I2C1_SCL << GPIO2A5_SEL_SHIFT |
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GPIO2A4_I2C1_SDA << GPIO2A4_SEL_SHIFT);
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break;
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case PERIPH_ID_I2C2:
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rk_clrsetreg(&grf->gpio2bl_iomux,
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GPIO2BL5_SEL_MASK | GPIO2BL6_SEL_MASK,
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GPIO2BL6_I2C2_SCL << GPIO2BL6_SEL_SHIFT |
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GPIO2BL5_I2C2_SDA << GPIO2BL5_SEL_SHIFT);
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break;
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case PERIPH_ID_I2C3:
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rk_clrsetreg(&grf->gpio0a_iomux,
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GPIO0A5_SEL_MASK | GPIO0A6_SEL_MASK,
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GPIO0A5_I2C3_SCL << GPIO0A5_SEL_SHIFT |
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GPIO0A6_I2C3_SDA << GPIO0A6_SEL_SHIFT);
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break;
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default:
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debug("i2c id = %d iomux error!\n", i2c_id);
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break;
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}
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}
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static void pinctrl_rk3328_lcdc_config(struct rk3328_grf_regs *grf, int lcd_id)
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{
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switch (lcd_id) {
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case PERIPH_ID_LCDC0:
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break;
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default:
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debug("lcdc id = %d iomux error!\n", lcd_id);
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break;
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}
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}
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static int pinctrl_rk3328_spi_config(struct rk3328_grf_regs *grf,
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enum periph_id spi_id, int cs)
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{
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u32 com_iomux = readl(&grf->com_iomux);
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if ((com_iomux & IOMUX_SEL_SPI_MASK) !=
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IOMUX_SEL_SPI_M0 << IOMUX_SEL_SPI_SHIFT) {
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debug("driver do not support iomux other than m0\n");
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goto err;
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}
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switch (spi_id) {
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case PERIPH_ID_SPI0:
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switch (cs) {
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case 0:
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rk_clrsetreg(&grf->gpio2bl_iomux,
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GPIO2BL3_SEL_MASK,
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GPIO2BL3_SPI_CSN0_M0
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<< GPIO2BL3_SEL_SHIFT);
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break;
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case 1:
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rk_clrsetreg(&grf->gpio2bl_iomux,
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GPIO2BL4_SEL_MASK,
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GPIO2BL4_SPI_CSN1_M0
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<< GPIO2BL4_SEL_SHIFT);
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break;
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default:
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goto err;
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}
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rk_clrsetreg(&grf->gpio2bl_iomux,
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GPIO2BL0_SEL_MASK,
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GPIO2BL0_SPI_CLK_TX_RX_M0 << GPIO2BL0_SEL_SHIFT);
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break;
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default:
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goto err;
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}
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return 0;
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err:
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debug("rkspi: periph%d cs=%d not supported", spi_id, cs);
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return -ENOENT;
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}
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static void pinctrl_rk3328_uart_config(struct rk3328_grf_regs *grf, int uart_id)
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{
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u32 com_iomux = readl(&grf->com_iomux);
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switch (uart_id) {
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case PERIPH_ID_UART2:
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break;
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if (com_iomux & IOMUX_SEL_UART2_MASK)
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rk_clrsetreg(&grf->gpio2a_iomux,
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GPIO2A0_SEL_MASK | GPIO2A1_SEL_MASK,
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GPIO2A0_UART2_TX_M1 << GPIO2A0_SEL_SHIFT |
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GPIO2A1_UART2_RX_M1 << GPIO2A1_SEL_SHIFT);
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break;
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case PERIPH_ID_UART0:
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case PERIPH_ID_UART1:
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case PERIPH_ID_UART3:
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case PERIPH_ID_UART4:
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default:
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debug("uart id = %d iomux error!\n", uart_id);
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break;
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}
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}
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static void pinctrl_rk3328_sdmmc_config(struct rk3328_grf_regs *grf,
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int mmc_id)
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{
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u32 com_iomux = readl(&grf->com_iomux);
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switch (mmc_id) {
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case PERIPH_ID_EMMC:
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rk_clrsetreg(&grf->gpio0a_iomux,
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GPIO0A7_SEL_MASK,
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GPIO0A7_EMMC_DATA0 << GPIO0A7_SEL_SHIFT);
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rk_clrsetreg(&grf->gpio2d_iomux,
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GPIO2D4_SEL_MASK,
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GPIO2D4_EMMC_DATA1234 << GPIO2D4_SEL_SHIFT);
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rk_clrsetreg(&grf->gpio3c_iomux,
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GPIO3C0_SEL_MASK,
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GPIO3C0_EMMC_DATA567_PWR_CLK_RSTN_CMD
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<< GPIO3C0_SEL_SHIFT);
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break;
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case PERIPH_ID_SDCARD:
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/* SDMMC_PWREN use GPIO and init as regulator-fiexed */
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if (com_iomux & IOMUX_SEL_SDMMC_MASK)
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rk_clrsetreg(&grf->gpio0d_iomux,
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GPIO0D6_SEL_MASK,
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GPIO0D6_GPIO << GPIO0D6_SEL_SHIFT);
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else
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rk_clrsetreg(&grf->gpio2a_iomux,
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GPIO2A7_SEL_MASK,
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GPIO2A7_GPIO << GPIO2A7_SEL_SHIFT);
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rk_clrsetreg(&grf->gpio1a_iomux,
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GPIO1A0_SEL_MASK,
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GPIO1A0_CARD_DATA_CLK_CMD_DETN
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<< GPIO1A0_SEL_SHIFT);
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break;
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default:
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debug("mmc id = %d iomux error!\n", mmc_id);
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break;
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}
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}
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static int rk3328_pinctrl_request(struct udevice *dev, int func, int flags)
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{
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struct rk3328_pinctrl_priv *priv = dev_get_priv(dev);
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debug("%s: func=%x, flags=%x\n", __func__, func, flags);
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switch (func) {
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case PERIPH_ID_PWM0:
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case PERIPH_ID_PWM1:
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case PERIPH_ID_PWM2:
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case PERIPH_ID_PWM3:
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pinctrl_rk3328_pwm_config(priv->grf, func);
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break;
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case PERIPH_ID_I2C0:
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case PERIPH_ID_I2C1:
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case PERIPH_ID_I2C2:
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case PERIPH_ID_I2C3:
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pinctrl_rk3328_i2c_config(priv->grf, func);
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break;
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case PERIPH_ID_SPI0:
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pinctrl_rk3328_spi_config(priv->grf, func, flags);
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break;
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case PERIPH_ID_UART0:
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case PERIPH_ID_UART1:
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case PERIPH_ID_UART2:
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case PERIPH_ID_UART3:
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case PERIPH_ID_UART4:
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pinctrl_rk3328_uart_config(priv->grf, func);
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break;
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case PERIPH_ID_LCDC0:
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case PERIPH_ID_LCDC1:
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pinctrl_rk3328_lcdc_config(priv->grf, func);
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break;
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case PERIPH_ID_SDMMC0:
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case PERIPH_ID_SDMMC1:
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pinctrl_rk3328_sdmmc_config(priv->grf, func);
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static int rk3328_pinctrl_get_periph_id(struct udevice *dev,
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struct udevice *periph)
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{
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u32 cell[3];
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int ret;
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ret = dev_read_u32_array(periph, "interrupts", cell, ARRAY_SIZE(cell));
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if (ret < 0)
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return -EINVAL;
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switch (cell[1]) {
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case 49:
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return PERIPH_ID_SPI0;
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case 50:
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return PERIPH_ID_PWM0;
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case 36:
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return PERIPH_ID_I2C0;
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case 37: /* Note strange order */
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return PERIPH_ID_I2C1;
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case 38:
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return PERIPH_ID_I2C2;
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case 39:
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return PERIPH_ID_I2C3;
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case 12:
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return PERIPH_ID_SDCARD;
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case 14:
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return PERIPH_ID_EMMC;
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}
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return -ENOENT;
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}
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static int rk3328_pinctrl_set_state_simple(struct udevice *dev,
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struct udevice *periph)
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{
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int func;
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func = rk3328_pinctrl_get_periph_id(dev, periph);
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if (func < 0)
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return func;
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return rk3328_pinctrl_request(dev, func, 0);
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}
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static struct pinctrl_ops rk3328_pinctrl_ops = {
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.set_state_simple = rk3328_pinctrl_set_state_simple,
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.request = rk3328_pinctrl_request,
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.get_periph_id = rk3328_pinctrl_get_periph_id,
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};
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static int rk3328_pinctrl_probe(struct udevice *dev)
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{
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struct rk3328_pinctrl_priv *priv = dev_get_priv(dev);
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int ret = 0;
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priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
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debug("%s: grf=%p\n", __func__, priv->grf);
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return ret;
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}
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static const struct udevice_id rk3328_pinctrl_ids[] = {
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{ .compatible = "rockchip,rk3328-pinctrl" },
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{ }
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};
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U_BOOT_DRIVER(pinctrl_rk3328) = {
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.name = "rockchip_rk3328_pinctrl",
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.id = UCLASS_PINCTRL,
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.of_match = rk3328_pinctrl_ids,
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.priv_auto_alloc_size = sizeof(struct rk3328_pinctrl_priv),
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.ops = &rk3328_pinctrl_ops,
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.bind = dm_scan_fdt_dev,
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.probe = rk3328_pinctrl_probe,
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};
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