mirror of
https://github.com/smaeul/u-boot.git
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03de305ec4
As part of bringing the master branch back in to next, we need to allow for all of these changes to exist here. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
123 lines
2.7 KiB
C
123 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Board init file for Dragonboard 820C
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*
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* (C) Copyright 2017 Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
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*/
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#include <button.h>
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#include <cpu_func.h>
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#include <init.h>
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#include <env.h>
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#include <asm/cache.h>
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#include <asm/global_data.h>
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#include <linux/arm-smccc.h>
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#include <linux/psci.h>
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#include <dm.h>
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#include <asm/io.h>
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#include <linux/bitops.h>
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#include <asm/psci.h>
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#include <asm/gpio.h>
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#define TLMM_BASE_ADDR (0x1010000)
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/* Strength (sdc1) */
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#define SDC1_HDRV_PULL_CTL_REG (TLMM_BASE_ADDR + 0x0012D000)
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DECLARE_GLOBAL_DATA_PTR;
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static void sdhci_power_init(void)
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{
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const u32 TLMM_PULL_MASK = 0x3;
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const u32 TLMM_HDRV_MASK = 0x7;
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struct tlmm_cfg {
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u32 bit; /* bit in the register */
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u8 mask; /* mask clk/dat/cmd control */
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u8 val;
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};
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/* bit offsets in the sdc tlmm register */
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enum { SDC1_DATA_HDRV = 0,
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SDC1_CMD_HDRV = 3,
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SDC1_CLK_HDRV = 6,
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SDC1_DATA_PULL = 9,
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SDC1_CMD_PULL = 11,
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SDC1_CLK_PULL = 13,
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SDC1_RCLK_PULL = 15,
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};
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enum { TLMM_PULL_DOWN = 0x1,
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TLMM_PULL_UP = 0x3,
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TLMM_NO_PULL = 0x0,
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};
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enum { TLMM_CUR_VAL_10MA = 0x04,
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TLMM_CUR_VAL_16MA = 0x07,
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};
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int i;
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/* drive strength configs for sdhc pins */
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const struct tlmm_cfg hdrv[] = {
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{ SDC1_CLK_HDRV, TLMM_CUR_VAL_16MA, TLMM_HDRV_MASK, },
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{ SDC1_CMD_HDRV, TLMM_CUR_VAL_10MA, TLMM_HDRV_MASK, },
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{ SDC1_DATA_HDRV, TLMM_CUR_VAL_10MA, TLMM_HDRV_MASK, },
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};
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/* pull configs for sdhc pins */
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const struct tlmm_cfg pull[] = {
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{ SDC1_CLK_PULL, TLMM_NO_PULL, TLMM_PULL_MASK, },
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{ SDC1_CMD_PULL, TLMM_PULL_UP, TLMM_PULL_MASK, },
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{ SDC1_DATA_PULL, TLMM_PULL_UP, TLMM_PULL_MASK, },
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};
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const struct tlmm_cfg rclk[] = {
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{ SDC1_RCLK_PULL, TLMM_PULL_DOWN, TLMM_PULL_MASK,},
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};
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for (i = 0; i < ARRAY_SIZE(hdrv); i++)
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clrsetbits_le32(SDC1_HDRV_PULL_CTL_REG,
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hdrv[i].mask << hdrv[i].bit,
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hdrv[i].val << hdrv[i].bit);
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for (i = 0; i < ARRAY_SIZE(pull); i++)
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clrsetbits_le32(SDC1_HDRV_PULL_CTL_REG,
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pull[i].mask << pull[i].bit,
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pull[i].val << pull[i].bit);
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for (i = 0; i < ARRAY_SIZE(rclk); i++)
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clrsetbits_le32(SDC1_HDRV_PULL_CTL_REG,
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rclk[i].mask << rclk[i].bit,
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rclk[i].val << rclk[i].bit);
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}
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void qcom_board_init(void)
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{
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sdhci_power_init();
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}
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/* Check for vol- button - if pressed - stop autoboot */
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int misc_init_r(void)
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{
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struct udevice *btn;
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int ret;
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enum button_state_t state;
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ret = button_get_by_label("pwrkey", &btn);
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if (ret < 0) {
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printf("Couldn't find power button!\n");
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return ret;
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}
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state = button_get_state(btn);
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if (state == BUTTON_ON) {
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env_set("bootdelay", "-1");
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printf("Power button pressed - dropping to console.\n");
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}
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return 0;
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}
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