arm64: dts: qcom: qrb5165-rb5: fix uSD pins drive strength

Lower drive strength for microSD data and CMD pins from 16 to 10. This
fixes spurious card removal issues observed on some boards. Also this
change allows us to re-enable 1.8V support, which seems to work with
lowered drive strength.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Cc: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
Fixes: 53a8ccf1c7e5 ("arm64: dts: qcom: rb5: Add support for uSD card")
Link: https://lore.kernel.org/r/20201217183341.3186402-1-dmitry.baryshkov@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

diff --git a/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts b/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts
index 7c2a798c6ac6b3c1efd9c0424b82434aa562a034..4a0c3edf87e15b69ab50f72d8bf9bf2d284c405b 100644 (file)
--- a/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts
+++ b/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts
@@ -660,8 +660,6 @@
        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;
 };
@@ -982,13 +980,13 @@
                cmd {
                        pins = "sdc2_cmd";
                        bias-pull-up;
-                       drive-strength = <16>;
+                       drive-strength = <10>;
                };
 
                data {
                        pins = "sdc2_data";
                        bias-pull-up;
-                       drive-strength = <16>;
+                       drive-strength = <10>;
                };
        };