From: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
[ 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@xxxxxxxxxx>
Cc: Veerabhadrarao Badiganti <vbadigan@xxxxxxxxxxxxxx>
Fixes: 53a8ccf1c7e5 ("arm64: dts: qcom: rb5: Add support for uSD card")
Link: https://lore.kernel.org/r/20201217183341.3186402-1-dmitry.baryshkov@xxxxxxxxxx
Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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>;
};
};
--
2.27.0
