arm64: dts: qcom: msm8994-octagon: Add uSD card and disable HS400 on eMMC

Lumia 950/XL, like other phones, ship with different storage chips.
Some of them are not capable of stable operation at HS400. Disable it.

Signed-off-by: Gustave Monce <gustave.monce@outlook.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Link: https://lore.kernel.org/r/20210131013853.55810-12-konrad.dybcio@somainline.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

diff --git a/arch/arm64/boot/dts/qcom/msm8994-msft-lumia-octagon.dtsi b/arch/arm64/boot/dts/qcom/msm8994-msft-lumia-octagon.dtsi
index 0b8b9e3..730bd47 100644 (file)
--- a/arch/arm64/boot/dts/qcom/msm8994-msft-lumia-octagon.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8994-msft-lumia-octagon.dtsi
@@ -684,6 +684,27 @@
 
 &sdhc1 {
        status = "okay";
+
+       /*
+        * This device is shipped with HS400 capabable eMMCs
+        * However various brands have been used in various product batches,
+        * including a Samsung eMMC (BGND3R) which features a quirk with HS400.
+        * Set the speed to HS200 as a safety measure.
+        */
+       mmc-hs200-1_8v;
+};
+
+&sdhc2 {
+       status = "okay";
+
+       pinctrl-names = "default", "sleep";
+       pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on>;
+       pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off>;
+
+       vmmc-supply = <&vreg_l21a_2p95>;
+       vqmmc-supply = <&vreg_l13a_2p95>;
+
+       cd-gpios = <&pm8994_gpios 8 GPIO_ACTIVE_LOW>;
 };
 
 &tlmm {