From: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
Add support for uSD card on RB5 using the SDHC2 interface.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
[DB: disabled 1.8V support to get SDHC to work]
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/qrb5165-rb5.dts | 41 ++++++++++++++++++++++++
1 file changed, 41 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts b/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts
index 1528a865f1f8..aed00f707f1d 100644
--- a/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts
+++ b/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts
@@ -18,6 +18,7 @@ / {
aliases {
serial0 = &uart12;
+ sdhc2 = &sdhc_2;
};
chosen {
@@ -471,6 +472,20 @@ &qupv3_id_2 {
status = "okay";
};
+&sdhc_2 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&sdc2_default_state &sdc2_card_det_n>;
+ vmmc-supply = <&vreg_l9c_2p96>;
+ vqmmc-supply = <&vreg_l6c_2p96>;
+ cd-gpios = <&tlmm 77 GPIO_ACTIVE_LOW>;
+ bus-width = <4>;
+ /* there seem to be issues with HS400-1.8V mode, so disable it */
+ no-1-8-v;
+ no-sdio;
+ no-emmc;
+};
+
/* CAN */
&spi0 {
status = "okay";
@@ -659,6 +674,32 @@ &tlmm {
"HST_BLE_SNS_UART_RX",
"HST_WLAN_UART_TX",
"HST_WLAN_UART_RX";
+
+ sdc2_default_state: sdc2-default {
+ clk {
+ pins = "sdc2_clk";
+ bias-disable;
+ drive-strength = <16>;
+ };
+
+ cmd {
+ pins = "sdc2_cmd";
+ bias-pull-up;
+ drive-strength = <16>;
+ };
+
+ data {
+ pins = "sdc2_data";
+ bias-pull-up;
+ drive-strength = <16>;
+ };
+ };
+
+ sdc2_card_det_n: sd-card-det-n {
+ pins = "gpio77";
+ function = "gpio";
+ bias-pull-up;
+ };
};
&uart12 {
--
2.28.0
