From: Jon Hunter jonathanh@nvidia.com
commit 1e5e929c009559bd7e898ac8e17a5d01037cb057 upstream.
Commit 34993594181d ("arm64: tegra: Enable HDMI on Jetson TX1") added a regulator for HDMI on the Jetson TX1 platform. This regulator has an active high enable, but the GPIO specifier for enabling the regulator incorrectly defines it as active-low. This causes the following warning to occur on boot ...
WARNING KERN regulator@10 GPIO handle specifies active low - ignored
The fixed-regulator binding does not use the active-low flag from the gpio specifier and purely relies of the presence of the 'enable-active-high' property to determine if it is active high or low (if this property is omitted). Fix this warning by setting the GPIO to active-high in the GPIO specifier which aligns with the presense of the 'enable-active-high' property.
Fixes: 34993594181d ("arm64: tegra: Enable HDMI on Jetson TX1") Signed-off-by: Jon Hunter jonathanh@nvidia.com Signed-off-by: Thierry Reding treding@nvidia.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi +++ b/arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi @@ -1583,7 +1583,7 @@ regulator-name = "VDD_HDMI_5V0"; regulator-min-microvolt = <5000000>; regulator-max-microvolt = <5000000>; - gpio = <&exp1 12 GPIO_ACTIVE_LOW>; + gpio = <&exp1 12 GPIO_ACTIVE_HIGH>; enable-active-high; vin-supply = <&vdd_5v0_sys>; };