From: Gustave Monce <gustave.monce@xxxxxxxxxxx>
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@xxxxxxxxxxx>
Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxx>
---
.../dts/qcom/msm8994-msft-lumia-octagon.dtsi | 21 +++++++++++++++++++
1 file changed, 21 insertions(+)
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 bf6e63a23600..004a42261cef 100644
--- 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 @@ vph_pwr_bbyp: boost-bypass {
&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 {
--
2.30.0
