From: Dmitry Baryshkov dmitry.baryshkov@linaro.org
[ Upstream commit abf2c58aaa776cf43daf0fc4fd20082c71583c6b ]
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.o... Signed-off-by: Bjorn Andersson bjorn.andersson@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- arch/arm64/boot/dts/qcom/qrb5165-rb5.dts | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts b/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts index ce22d4fa383e6..f86cc5140d3b9 100644 --- a/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts +++ b/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts @@ -491,8 +491,6 @@ 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; }; @@ -706,13 +704,13 @@ 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>; }; };