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mmc: starfive: Change the voltage to adapt to JH7110 EVB

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Change the voltage, so the driver can adapt to JH7110 EVB.

Signed-off-by: William Qiu <william.qiu@starfivetech.com>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>
This commit is contained in:
William Qiu 2023-10-09 10:59:03 +08:00 • committed by Hal Feng
parent 1d54039876
commit 048b62c138
1 changed files with 30 additions and 0 deletions
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30
drivers/mmc/host/dw_mmc-starfive.c
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@ -8,6 +8,7 @@
#include <linux/bitfield.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/mfd/syscon.h>
#include <linux/mmc/host.h>
#include <linux/module.h>
@ -95,10 +96,39 @@ out:
return ret;
}
static int dw_mci_starfive_switch_voltage(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct dw_mci_slot *slot = mmc_priv(mmc);
struct dw_mci *host = slot->host;
u32 ret;
if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_330)
ret = gpio_direction_output(25, 0);
else if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_180)
ret = gpio_direction_output(25, 1);
if (ret)
return ret;
if (!IS_ERR(mmc->supply.vqmmc)) {
ret = mmc_regulator_set_vqmmc(mmc, ios);
if (ret < 0) {
dev_err(host->dev, "Regulator set error %d\n", ret);
return ret;
}
}
/* We should delay 20ms wait for timing setting finished. */
mdelay(20);
return 0;
}
static const struct dw_mci_drv_data starfive_data = {
.common_caps = MMC_CAP_CMD23,
.set_ios = dw_mci_starfive_set_ios,
.execute_tuning = dw_mci_starfive_execute_tuning,
.switch_voltage = dw_mci_starfive_switch_voltage,
};
static const struct of_device_id dw_mci_starfive_match[] = {