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arm64: zynqmp: Fix pwm-fan polarity

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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.

Signed-off-by: Vishal Patel <vishal.patel@amd.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/4658ae8576882f5d28ad57ca74a7b798a546ec37.1722241096.git.michal.simek@amd.com
This commit is contained in:
Vishal Patel
2024-07-29 10:18:18 +02:00
committed by Michal Simek
parent 1e49d7f50e
commit e1ab566598
1 changed files with 1 additions and 1 deletions
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2
arch/arm/dts/zynqmp-sm-k26-revA.dts
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@@ -107,7 +107,7 @@
pwm-fan {
compatible = "pwm-fan";
status = "okay";
pwms = <&ttc0 2 40000 0>;
pwms = <&ttc0 2 40000 1>;
};
};