diff options
| author | Faiz Abbas | 2019-06-11 00:43:41 +0530 |
|---|---|---|
| committer | Tom Rini | 2019-07-17 11:12:08 -0400 |
| commit | f605807f3d4686637a2f8b0f24bebabdcdef6898 (patch) | |
| tree | 3ac6305dbf46eef3c7717f4b5c8a299eff227805 | |
| parent | d1c0a2200afb398f67a0c2c84948a079b44290a1 (diff) | |
mmc: am654_sdhci: Add a platform specific set_control_reg() callback
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>
| -rw-r--r-- | drivers/mmc/am654_sdhci.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/mmc/am654_sdhci.c b/drivers/mmc/am654_sdhci.c index b9a7924d4e2..fe633aa39aa 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; @@ -143,7 +158,8 @@ 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) |