From 7cf18a364ed2d56cf44769d1a3690aa0bf4d5e9e Mon Sep 17 00:00:00 2001 From: Vishal Patel Date: Fri, 18 Jul 2025 12:45:10 +0200 Subject: [PATCH] arm64: zynqmp: Fix pwm-fan polarity The correct operating mode for the fan is inversed (1). The previous pwm driver implementation had a bug and the polarity information was propagated incorrectly to the kernel. The normal (0) polarity specified in the device tree was incorrectly clearing the polarity bit in the counter control register. After the bug fix, setting the polarity to inversed (1) in the device tree will clear the polarity bit. Also provide label for custom description based on this SOM. Signed-off-by: Vishal Patel Signed-off-by: Michal Simek Link: https://lore.kernel.org/r/e6dc9ce1e0b97c9d9b073c323cc94a5d7a88b94a.1752835502.git.michal.simek@amd.com --- arch/arm64/boot/dts/xilinx/zynqmp-sm-k26-revA.dts | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-sm-k26-revA.dts b/arch/arm64/boot/dts/xilinx/zynqmp-sm-k26-revA.dts index 51778df5540c5..500af1d2232f0 100644 --- a/arch/arm64/boot/dts/xilinx/zynqmp-sm-k26-revA.dts +++ b/arch/arm64/boot/dts/xilinx/zynqmp-sm-k26-revA.dts @@ -90,10 +90,10 @@ }; }; - pwm-fan { + pwm_fan: pwm-fan { compatible = "pwm-fan"; status = "okay"; - pwms = <&ttc0 2 40000 0>; + pwms = <&ttc0 2 40000 1>; }; }; -- 2.47.3