Add a platform specific set_control_reg() callback to help switch to
UHS speed modes.
Signed-off-by: Faiz Abbas <faiz_ab...@ti.com>
Reviewed-by: Tom Rini <tr...@konsulko.com>
---
drivers/mmc/am654_sdhci.c | 18 +++++++++++++++++-
1 file changed, 17 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/am654_sdhci.c b/drivers/mmc/am654_sdhci.c
index 8e07baa74f..8e4147c165 100644
--- a/drivers/mmc/am654_sdhci.c
+++ b/drivers/mmc/am654_sdhci.c
@@ -75,6 +75,21 @@ struct am654_sdhci_plat {
bool dll_on;
};
+static void am654_sdhci_set_control_reg(struct sdhci_host *host)
+{
+ struct mmc *mmc = (struct mmc *)host->mmc;
+ u32 reg;
+
+ if (IS_SD(host->mmc) &&
+ mmc->signal_voltage == MMC_SIGNAL_VOLTAGE_180) {
+ reg = sdhci_readw(host, SDHCI_HOST_CONTROL2);
+ reg |= SDHCI_CTRL_VDD_180;
+ sdhci_writew(host, reg, SDHCI_HOST_CONTROL2);
+ }
+
+ sdhci_set_uhs_timing(host);
+}
+
static int am654_sdhci_set_ios_post(struct sdhci_host *host)
{
struct udevice *dev = host->mmc->dev;
@@ -155,7 +170,8 @@ static int am654_sdhci_set_ios_post(struct sdhci_host *host)
}
const struct sdhci_ops am654_sdhci_ops = {
- .set_ios_post = &am654_sdhci_set_ios_post,
+ .set_ios_post = &am654_sdhci_set_ios_post,
+ .set_control_reg = &am654_sdhci_set_control_reg,
};
int am654_sdhci_init(struct am654_sdhci_plat *plat)
--
2.19.2
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