Re: [PATCH v2] arm64: dts: qcom: hamoa-iot-evk: Add backlight support for eDP panel
From: Yongxing Mou
Date: Thu Nov 06 2025 - 21:35:59 EST
On 11/6/2025 6:15 PM, Konrad Dybcio wrote:
On 11/6/25 8:12 AM, Yongxing Mou wrote:That's great. Thanks for your comments and suggestions. Will update the commit message next version.
Previously, the eDP panel backlight was enabled via UEFI. Added backlight
control node in kernel DTS due to some meta may not enable the backlight.
Adding the hardware description to the DT with the reason that some prior
boot stage might not have taken care of it is not great
How about:
The backlight on the Hamoa IoT EVK is controlled through a PWM signal.
Aligned with other x1e80100-based platforms: the PWM signal is controlled
by PMK8550, and the backlight enable signal is handled by PMC8380.
Describe the backlight device and connect it to the eDP panel to allow
for brightness control
Konrad