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authorChristian Lamparter <chunkeey@gmail.com>2019-12-05 01:25:33 +0100
committerPetr Štetiar <ynezz@true.cz>2019-12-19 22:41:57 +0100
commit5ce72009ac11ebe6f83a7a4465c7371008605bda (patch)
tree03d57f4747046d44e7c6bb70228cdef0342ae977 /target/linux
parent9e7a8beb9c0ed3105f86465bc64dfc79bae34d1f (diff)
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ipq806x: increase drive-strength for pinmux
Increase drive-strength from https://lore.kernel.org/patchwork/patch/626885/ 2mA drive strength is not enough when we connect multiple i2c devices on the bus with different pull up resistors. This issue was detected when multiple i2c devices connected on the other side of level shifters on Linaro sensor board. Maxing up to 16mA made i2c much stable. Signed-off-by: Christian Lamparter <chunkeey@gmail.com> Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Diffstat (limited to 'target/linux')
-rw-r--r--target/linux/ipq806x/files-4.19/arch/arm/boot/dts/qcom-ipq8064.dtsi6
1 files changed, 3 insertions, 3 deletions
diff --git a/target/linux/ipq806x/files-4.19/arch/arm/boot/dts/qcom-ipq8064.dtsi b/target/linux/ipq806x/files-4.19/arch/arm/boot/dts/qcom-ipq8064.dtsi
index efaa6abd78..17e8a62381 100644
--- a/target/linux/ipq806x/files-4.19/arch/arm/boot/dts/qcom-ipq8064.dtsi
+++ b/target/linux/ipq806x/files-4.19/arch/arm/boot/dts/qcom-ipq8064.dtsi
@@ -633,7 +633,7 @@
mux {
pins = "gpio3";
function = "pcie1_rst";
- drive-strength = <2>;
+ drive-strength = <12>;
bias-disable;
};
};
@@ -642,7 +642,7 @@
mux {
pins = "gpio48";
function = "pcie2_rst";
- drive-strength = <2>;
+ drive-strength = <12>;
bias-disable;
};
};
@@ -651,7 +651,7 @@
mux {
pins = "gpio63";
function = "pcie3_rst";
- drive-strength = <2>;
+ drive-strength = <12>;
bias-disable;
output-low;
};