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https://github.com/AsahiLinux/u-boot
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03cfff0e48
The current driver stength is too high, leading to spec violations on the falling edge. Fix it with values from HW Signed-off-by: Markus Niebel <Markus.Niebel@tq-group.com>
282 lines
6.7 KiB
C
282 lines
6.7 KiB
C
/*
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* Copyright (C) 2012 Freescale Semiconductor, Inc.
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* Author: Fabio Estevam <fabio.estevam@freescale.com>
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*
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* Copyright (C) 2013, 2014 TQ Systems (ported SabreSD to TQMa6x)
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* Author: Markus Niebel <markus.niebel@tq-group.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <asm/arch/clock.h>
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#include <asm/arch/mx6-pins.h>
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#include <asm/arch/imx-regs.h>
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#include <asm/arch/iomux.h>
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#include <asm/arch/sys_proto.h>
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#include <linux/errno.h>
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#include <asm/gpio.h>
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#include <asm/io.h>
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#include <asm/imx-common/mxc_i2c.h>
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#include <asm/imx-common/spi.h>
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#include <common.h>
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#include <fsl_esdhc.h>
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#include <libfdt.h>
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#include <i2c.h>
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#include <mmc.h>
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#include <power/pfuze100_pmic.h>
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#include <power/pmic.h>
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#include <spi_flash.h>
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#include "tqma6_bb.h"
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DECLARE_GLOBAL_DATA_PTR;
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#define USDHC_CLK_PAD_CTRL (PAD_CTL_PUS_47K_UP | PAD_CTL_SPEED_LOW | \
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PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
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#define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP | PAD_CTL_SPEED_LOW | \
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PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
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#define GPIO_OUT_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_LOW | \
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PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
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#define GPIO_IN_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_LOW | \
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PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
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#define SPI_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
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PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
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#define I2C_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
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PAD_CTL_DSE_80ohm | PAD_CTL_HYS | \
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PAD_CTL_ODE | PAD_CTL_SRE_FAST)
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int dram_init(void)
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{
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gd->ram_size = imx_ddr_size();
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return 0;
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}
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static const uint16_t tqma6_emmc_dsr = 0x0100;
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/* eMMC on USDHCI3 always present */
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static iomux_v3_cfg_t const tqma6_usdhc3_pads[] = {
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NEW_PAD_CTRL(MX6_PAD_SD3_CLK__SD3_CLK, USDHC_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_SD3_CMD__SD3_CMD, USDHC_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_SD3_DAT0__SD3_DATA0, USDHC_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_SD3_DAT1__SD3_DATA1, USDHC_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_SD3_DAT2__SD3_DATA2, USDHC_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_SD3_DAT3__SD3_DATA3, USDHC_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_SD3_DAT4__SD3_DATA4, USDHC_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_SD3_DAT5__SD3_DATA5, USDHC_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_SD3_DAT6__SD3_DATA6, USDHC_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_SD3_DAT7__SD3_DATA7, USDHC_PAD_CTRL),
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/* eMMC reset */
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NEW_PAD_CTRL(MX6_PAD_SD3_RST__SD3_RESET, GPIO_OUT_PAD_CTRL),
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};
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/*
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* According to board_mmc_init() the following map is done:
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* (U-Boot device node) (Physical Port)
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* mmc0 eMMC (SD3) on TQMa6
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* mmc1 .. n optional slots used on baseboard
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*/
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struct fsl_esdhc_cfg tqma6_usdhc_cfg = {
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.esdhc_base = USDHC3_BASE_ADDR,
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.max_bus_width = 8,
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};
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int board_mmc_getcd(struct mmc *mmc)
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{
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struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
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int ret = 0;
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if (cfg->esdhc_base == USDHC3_BASE_ADDR)
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/* eMMC/uSDHC3 is always present */
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ret = 1;
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else
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ret = tqma6_bb_board_mmc_getcd(mmc);
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return ret;
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}
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int board_mmc_getwp(struct mmc *mmc)
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{
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struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
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int ret = 0;
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if (cfg->esdhc_base == USDHC3_BASE_ADDR)
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/* eMMC/uSDHC3 is always present */
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ret = 0;
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else
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ret = tqma6_bb_board_mmc_getwp(mmc);
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return ret;
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}
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int board_mmc_init(bd_t *bis)
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{
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imx_iomux_v3_setup_multiple_pads(tqma6_usdhc3_pads,
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ARRAY_SIZE(tqma6_usdhc3_pads));
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tqma6_usdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
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if (fsl_esdhc_initialize(bis, &tqma6_usdhc_cfg)) {
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puts("Warning: failed to initialize eMMC dev\n");
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} else {
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struct mmc *mmc = find_mmc_device(0);
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if (mmc)
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mmc_set_dsr(mmc, tqma6_emmc_dsr);
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}
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tqma6_bb_board_mmc_init(bis);
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return 0;
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}
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static iomux_v3_cfg_t const tqma6_ecspi1_pads[] = {
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/* SS1 */
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NEW_PAD_CTRL(MX6_PAD_EIM_D19__GPIO3_IO19, SPI_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_EIM_D16__ECSPI1_SCLK, SPI_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_EIM_D17__ECSPI1_MISO, SPI_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_EIM_D18__ECSPI1_MOSI, SPI_PAD_CTRL),
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};
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#define TQMA6_SF_CS_GPIO IMX_GPIO_NR(3, 19)
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static unsigned const tqma6_ecspi1_cs[] = {
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TQMA6_SF_CS_GPIO,
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};
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__weak void tqma6_iomuxc_spi(void)
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{
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unsigned i;
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for (i = 0; i < ARRAY_SIZE(tqma6_ecspi1_cs); ++i)
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gpio_direction_output(tqma6_ecspi1_cs[i], 1);
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imx_iomux_v3_setup_multiple_pads(tqma6_ecspi1_pads,
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ARRAY_SIZE(tqma6_ecspi1_pads));
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}
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int board_spi_cs_gpio(unsigned bus, unsigned cs)
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{
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return ((bus == CONFIG_SF_DEFAULT_BUS) &&
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(cs == CONFIG_SF_DEFAULT_CS)) ? TQMA6_SF_CS_GPIO : -1;
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}
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static struct i2c_pads_info tqma6_i2c3_pads = {
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/* I2C3: on board LM75, M24C64, */
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.scl = {
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.i2c_mode = NEW_PAD_CTRL(MX6_PAD_GPIO_5__I2C3_SCL,
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I2C_PAD_CTRL),
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.gpio_mode = NEW_PAD_CTRL(MX6_PAD_GPIO_5__GPIO1_IO05,
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I2C_PAD_CTRL),
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.gp = IMX_GPIO_NR(1, 5)
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},
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.sda = {
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.i2c_mode = NEW_PAD_CTRL(MX6_PAD_GPIO_6__I2C3_SDA,
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I2C_PAD_CTRL),
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.gpio_mode = NEW_PAD_CTRL(MX6_PAD_GPIO_6__GPIO1_IO06,
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I2C_PAD_CTRL),
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.gp = IMX_GPIO_NR(1, 6)
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}
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};
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static void tqma6_setup_i2c(void)
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{
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int ret;
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/*
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* use logical index for bus, e.g. I2C1 -> 0
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* warn on error
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*/
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ret = setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &tqma6_i2c3_pads);
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if (ret)
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printf("setup I2C3 failed: %d\n", ret);
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}
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int board_early_init_f(void)
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{
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return tqma6_bb_board_early_init_f();
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}
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int board_init(void)
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{
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/* address of boot parameters */
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gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
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tqma6_iomuxc_spi();
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tqma6_setup_i2c();
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tqma6_bb_board_init();
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return 0;
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}
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static const char *tqma6_get_boardname(void)
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{
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u32 cpurev = get_cpu_rev();
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switch ((cpurev & 0xFF000) >> 12) {
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case MXC_CPU_MX6SOLO:
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return "TQMa6S";
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break;
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case MXC_CPU_MX6DL:
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return "TQMa6DL";
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break;
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case MXC_CPU_MX6D:
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return "TQMa6D";
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break;
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case MXC_CPU_MX6Q:
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return "TQMa6Q";
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break;
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default:
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return "??";
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};
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}
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/* setup board specific PMIC */
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int power_init_board(void)
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{
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struct pmic *p;
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u32 reg, rev;
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power_pfuze100_init(TQMA6_PFUZE100_I2C_BUS);
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p = pmic_get("PFUZE100");
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if (p && !pmic_probe(p)) {
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pmic_reg_read(p, PFUZE100_DEVICEID, ®);
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pmic_reg_read(p, PFUZE100_REVID, &rev);
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printf("PMIC: PFUZE100 ID=0x%02x REV=0x%02x\n", reg, rev);
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}
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return 0;
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}
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int board_late_init(void)
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{
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setenv("board_name", tqma6_get_boardname());
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tqma6_bb_board_late_init();
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return 0;
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}
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int checkboard(void)
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{
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printf("Board: %s on a %s\n", tqma6_get_boardname(),
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tqma6_bb_get_boardname());
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return 0;
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}
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/*
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* Device Tree Support
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*/
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#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
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int ft_board_setup(void *blob, bd_t *bd)
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{
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/* bring in eMMC dsr settings */
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do_fixup_by_path_u32(blob,
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"/soc/aips-bus@02100000/usdhc@02198000",
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"dsr", tqma6_emmc_dsr, 2);
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tqma6_bb_ft_board_setup(blob, bd);
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return 0;
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}
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#endif /* defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) */
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