Hello
my board is based on AM3352 with 2 SD cards (mmc0 is working fine, second is not)
The only trace i have in linux booting is :
mmc1: mmc_rescan_try_freq: trying to init card at 400000 Hz
i have made the following modifications to have a second SD card reader :
1° call mmc1_init :
{mmc1_init, DEV_ON_BASEBOARD, PROFILE_ALL}, /* added */
{mmc0_init, DEV_ON_BASEBOARD, PROFILE_ALL},
2° update mmc1 init according to my GPIOs for CD and WP :
setup_pin_mux(mmc1_common_pin_mux);
setup_pin_mux(mmc1_wp_only_pin_mux);
setup_pin_mux(mmc1_cd_only_pin_mux);
am335x_mmc[1].mmc = 2;
am335x_mmc[1].caps = MMC_CAP_4_BIT_DATA;
am335x_mmc[1].gpio_cd = GPIO_TO_PIN(0, 14); //GPIO0_14
am335x_mmc[1].gpio_wp = GPIO_TO_PIN(3, 15); //GPIO3_15
am335x_mmc[1].ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34; /* 3V3 */
}
3° update mmc1_common_pin_mux according to my GPIOs
static struct pinmux_config mmc1_common_pin_mux[] = {
{"gpmc_ad11.mmc1_dat3", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLUP},
{"gpmc_ad10.mmc1_dat2", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLUP},
{"gpmc_ad9.mmc1_dat1", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLUP},
{"gpmc_ad8.mmc1_dat0", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLUP},
{"gpmc_csn1.mmc1_clk", OMAP_MUX_MODE2 | AM33XX_PIN_INPUT_PULLUP},
{"gpmc_csn2.mmc1_cmd", OMAP_MUX_MODE2 | AM33XX_PIN_INPUT_PULLUP},
{NULL, 0},
};
static struct pinmux_config mmc1_wp_only_pin_mux[] = {
{"mcasp0_fsx.gpio3_15", OMAP_MUX_MODE7 | AM33XX_PIN_INPUT_PULLUP}, //WP=3.15
{NULL, 0},
};
static struct pinmux_config mmc1_cd_only_pin_mux[] = {
{"uart1_rxd.gpio0_14", OMAP_MUX_MODE7 | AM33XX_PIN_INPUT_PULLUP}, //CD=0.14
{NULL, 0},
};
4°keep the following struture
static struct omap2_hsmmc_info am335x_mmc[] __initdata = {
{
.mmc = 1,
.caps = MMC_CAP_4_BIT_DATA,
.gpio_cd = GPIO_TO_PIN(0, 6),
.gpio_wp = GPIO_TO_PIN(3, 18),
.ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, /* 3V3 */
},
{
.mmc = 0, /* will be set at runtime */
},
{
.mmc = 0, /* will be set at runtime */
},
{} /* Terminator */
};
Does any one knows what i missed to add mmc1 detection ?
regards
