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drivers: sdhc: imx_usdhc: Initialize card clock with CMD0

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Use CMD0 to detect card initialization, rather than using card power on.

Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
This commit is contained in:
Daniel DeGrasse 2022-08-15 15:03:37 -05:00 committed by Anas Nashif
parent a517d79eff
commit 7ca3aec97e
1 changed files with 8 additions and 10 deletions
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18
drivers/sdhc/imx_usdhc.c
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@ -386,16 +386,10 @@ static int imx_usdhc_set_io(const struct device *dev, struct sdhc_io *ios)
/* Set card power */
if ((host_io->power_mode != ios->power_mode) && (cfg->pwr_gpio.port)) {
if (host_io->power_mode == SDHC_POWER_ON) {
/* Send 74 clock cycles if SD card is just powering on */
USDHC_SetCardActive(cfg->base, 0xFFFF);
}
if (cfg->pwr_gpio.port) {
if (ios->power_mode == SDHC_POWER_OFF) {
gpio_pin_set_dt(&cfg->pwr_gpio, 0);
} else if (ios->power_mode == SDHC_POWER_ON) {
gpio_pin_set_dt(&cfg->pwr_gpio, 1);
}
if (ios->power_mode == SDHC_POWER_OFF) {
gpio_pin_set_dt(&cfg->pwr_gpio, 0);
} else if (ios->power_mode == SDHC_POWER_ON) {
gpio_pin_set_dt(&cfg->pwr_gpio, 1);
}
host_io->power_mode = ios->power_mode;
}
@ -646,6 +640,10 @@ static int imx_usdhc_request(const struct device *dev, struct sdhc_command *cmd,
int ret = 0;
int retries = (int)cmd->retries;
if (cmd->opcode == SD_GO_IDLE_STATE) {
USDHC_SetCardActive(cfg->base, 0xFFFF);
}
host_cmd.index = cmd->opcode;
host_cmd.argument = cmd->arg;
/* Mask out part of response type field used for SPI commands */