Add support for the mmc max-frequency device property for Intel BYT-based
host controllers.
Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
---
drivers/mmc/host/sdhci-pci-core.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c
index c4115bae5db1..5fe48d0f5c7e 100644
--- a/drivers/mmc/host/sdhci-pci-core.c
+++ b/drivers/mmc/host/sdhci-pci-core.c
@@ -710,11 +710,15 @@ static int intel_execute_tuning(struct mmc_host *mmc, u32 opcode)
static void byt_probe_slot(struct sdhci_pci_slot *slot)
{
struct mmc_host_ops *ops = &slot->host->mmc_host_ops;
+ struct device *dev = &slot->chip->pdev->dev;
+ struct mmc_host *mmc = slot->host->mmc;
byt_read_dsm(slot);
ops->execute_tuning = intel_execute_tuning;
ops->start_signal_voltage_switch = intel_start_signal_voltage_switch;
+
+ device_property_read_u32(dev, "max-frequency", &mmc->f_max);
}
static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot)
--
2.17.1
