Add a platform specific set_control_reg() callback to help switch to UHS speed modes.
Signed-off-by: Faiz Abbas faiz_abbas@ti.com Reviewed-by: Tom Rini trini@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)