arm64: dts: qcom: sdm845: Add SD nodes for sdm845-mtp

Enable support for one of the micro SD slots on the MTP.

Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Evan Green <evgreen@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>

diff --git a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
index b3def03..cde76da 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
@@ -7,6 +7,7 @@
 
 /dts-v1/;
 
+#include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
 #include "sdm845.dtsi"
 
@@ -358,8 +359,16 @@
        status = "okay";
 };
 
-&tlmm {
-       gpio-reserved-ranges = <0 4>, <81 4>;
+&sdhc_2 {
+       status = "okay";
+
+       pinctrl-names = "default";
+       pinctrl-0 = <&sdc2_clk &sdc2_cmd &sdc2_data &sd_card_det_n>;
+
+       vmmc-supply = <&vreg_l21a_2p95>;
+       vqmmc-supply = <&vddpx_2>;
+
+       cd-gpios = <&tlmm 126 GPIO_ACTIVE_LOW>;
 };
 
 &uart9 {
@@ -450,3 +459,48 @@
                bias-pull-up;
        };
 };
+
+&tlmm {
+       gpio-reserved-ranges = <0 4>, <81 4>;
+
+       sdc2_clk: sdc2-clk {
+               pinconf {
+                       pins = "sdc2_clk";
+                       bias-disable;
+
+                       /*
+                        * It seems that mmc_test reports errors if drive
+                        * strength is not 16 on clk, cmd, and data pins.
+                        */
+                       drive-strength = <16>;
+               };
+       };
+
+       sdc2_cmd: sdc2-cmd {
+               pinconf {
+                       pins = "sdc2_cmd";
+                       bias-pull-up;
+                       drive-strength = <16>;
+               };
+       };
+
+       sdc2_data: sdc2-data {
+               pinconf {
+                       pins = "sdc2_data";
+                       bias-pull-up;
+                       drive-strength = <16>;
+               };
+       };
+
+       sd_card_det_n: sd-card-det-n {
+               pinmux {
+                       pins = "gpio126";
+                       function = "gpio";
+               };
+
+               pinconf {
+                       pins = "gpio126";
+                       bias-pull-up;
+               };
+       };
+};