msdc.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
/*
 * This file is created based on MT8186 Functional Specification
 * Chapter number: 5.7
 */
 
#include <device/mmio.h>
#include <soc/addressmap.h>
#include <soc/gpio.h>
#include <soc/regulator.h>
#include <soc/msdc.h>
 
DEFINE_BITFIELD(MSDC0_DRV, 29, 0)
DEFINE_BITFIELD(MSDC1_DRV, 23, 6)
DEFINE_BITFIELD(MSDC1_GPIO_MODE0_0, 18, 16)
DEFINE_BITFIELD(MSDC1_GPIO_MODE0_1, 22, 20)
DEFINE_BITFIELD(MSDC1_GPIO_MODE0_2, 26, 24)
DEFINE_BITFIELD(MSDC1_GPIO_MODE0_3, 30, 28)
DEFINE_BITFIELD(MSDC1_GPIO_MODE1_0, 2, 0)
DEFINE_BITFIELD(MSDC1_GPIO_MODE1_1, 6, 4)
 
#define MSDC0_BASE     0x11230000
#define MSDC0_TOP_BASE 0x11cd0000
 
#define MSDC0_DRV_VALUE 0x1b6db6db
#define MSDC1_DRV_VALUE 0x1b6db
#define MSDC1_GPIO_MODE0_VALUE  0x1
#define MSDC1_GPIO_MODE1_VALUE  0x1
 
enum {
        MSDC1_GPIO_MODE0_BASE = 0x100053a0,
        MSDC1_GPIO_MODE1_BASE = 0x100053b0,
};
 
void mtk_msdc_configure_emmc(bool is_early_init)
{
        void *gpio_base = (void *)IOCFG_LT_BASE;
        int i;
 
        const gpio_t emmc_pu_pin[] = {
                GPIO(MSDC0_DAT0), GPIO(MSDC0_DAT1),
                GPIO(MSDC0_DAT2), GPIO(MSDC0_DAT3),
                GPIO(MSDC0_DAT4), GPIO(MSDC0_DAT5),
                GPIO(MSDC0_DAT6), GPIO(MSDC0_DAT7),
                GPIO(MSDC0_CMD), GPIO(MSDC0_RSTB),
        };
 
        const gpio_t emmc_pd_pin[] = {
                GPIO(MSDC0_DSL), GPIO(MSDC0_CLK),
        };
 
        for (i = 0; i < ARRAY_SIZE(emmc_pu_pin); i++)
                gpio_set_pull(emmc_pu_pin[i], GPIO_PULL_ENABLE, GPIO_PULL_UP);
 
        for (i = 0; i < ARRAY_SIZE(emmc_pd_pin); i++)
                gpio_set_pull(emmc_pd_pin[i], GPIO_PULL_ENABLE, GPIO_PULL_DOWN);
 
        /* set eMMC cmd/dat/clk pins driving to 8mA */
        SET32_BITFIELDS(gpio_base, MSDC0_DRV, MSDC0_DRV_VALUE);
 
        if (is_early_init)
                mtk_emmc_early_init((void *)MSDC0_BASE, (void *)MSDC0_TOP_BASE);
}
 
void mtk_msdc_configure_sdcard(void)
{
        void *gpio_base = (void *)IOCFG_LB_BASE;
        void *gpio_mode0_base = (void *)MSDC1_GPIO_MODE0_BASE;
        void *gpio_mode1_base = (void *)MSDC1_GPIO_MODE1_BASE;
        int i;
 
        const gpio_t sdcard_pu_pin[] = {
                GPIO(MSDC1_DAT0), GPIO(MSDC1_DAT1),
                GPIO(MSDC1_DAT2), GPIO(MSDC1_DAT3),
                GPIO(MSDC1_CMD),
        };
 
        const gpio_t sdcard_pd_pin[] = {
                GPIO(MSDC1_CLK),
        };
 
        for (i = 0; i < ARRAY_SIZE(sdcard_pu_pin); i++)
                gpio_set_pull(sdcard_pu_pin[i], GPIO_PULL_ENABLE, GPIO_PULL_UP);
 
        for (i = 0; i < ARRAY_SIZE(sdcard_pd_pin); i++)
                gpio_set_pull(sdcard_pd_pin[i], GPIO_PULL_ENABLE, GPIO_PULL_DOWN);
 
        /* set sdcard cmd/dat/clk pins driving to 8mA */
        SET32_BITFIELDS(gpio_base, MSDC1_DRV, MSDC1_DRV_VALUE);
 
        /* set sdcard dat2/dat0/dat3/cmd/clk pins to msdc1 mode */
        SET32_BITFIELDS(gpio_mode0_base,
                        MSDC1_GPIO_MODE0_0, MSDC1_GPIO_MODE0_VALUE,
                        MSDC1_GPIO_MODE0_1, MSDC1_GPIO_MODE0_VALUE,
                        MSDC1_GPIO_MODE0_2, MSDC1_GPIO_MODE0_VALUE,
                        MSDC1_GPIO_MODE0_3, MSDC1_GPIO_MODE0_VALUE);
 
        /* set sdcard dat1 pin to msdc1 mode */
        SET32_BITFIELDS(gpio_mode1_base,
                        MSDC1_GPIO_MODE1_0, MSDC1_GPIO_MODE1_VALUE,
                        MSDC1_GPIO_MODE1_1, MSDC1_GPIO_MODE1_VALUE);
 
        /* enable SDCard power */
        mainboard_set_regulator_vol(MTK_REGULATOR_VMCH, 3300000);
        mainboard_set_regulator_vol(MTK_REGULATOR_VMC, 3300000);
}