Add support for SDR50 mode in the Aspeed SDHCI driver by setting
capability shadow register.
Signed-off-by: Cool Lee <cool_lee@aspeedtech.com>
---
drivers/mmc/host/sdhci-of-aspeed.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/mmc/host/sdhci-of-aspeed.c b/drivers/mmc/host/sdhci-of-aspeed.c
index 365c02215273..ec6833295b6a 100644
--- a/drivers/mmc/host/sdhci-of-aspeed.c
+++ b/drivers/mmc/host/sdhci-of-aspeed.c
@@ -41,6 +41,7 @@
#define ASPEED_SDC_CAP1_1_8V (0 * 32 + 26)
/* SDIO{14,24} */
#define ASPEED_SDC_CAP2_SDR104 (1 * 32 + 1)
+#define ASPEED_SDC_CAP2_SDR50 (1 * 32 + 0)
struct aspeed_sdc {
struct clk *clk;
@@ -427,11 +428,17 @@ static int aspeed_sdhci_probe(struct platform_device *pdev)
sdhci_get_of_property(pdev);
if (of_property_read_bool(np, "mmc-hs200-1_8v") ||
+ of_property_read_bool(np, "sd-uhs-sdr50") ||
of_property_read_bool(np, "sd-uhs-sdr104")) {
aspeed_sdc_set_slot_capability(host, dev->parent, ASPEED_SDC_CAP1_1_8V,
true, slot);
}
+ if (of_property_read_bool(np, "sd-uhs-sdr50")) {
+ aspeed_sdc_set_slot_capability(host, dev->parent, ASPEED_SDC_CAP2_SDR50,
+ true, slot);
+ }
+
if (of_property_read_bool(np, "sd-uhs-sdr104")) {
aspeed_sdc_set_slot_capability(host, dev->parent, ASPEED_SDC_CAP2_SDR104,
true, slot);
--
2.34.1