From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Yongxing Mou <yongxing.mou@oss.qualcomm.com>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konradybcio@kernel.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] arm64: dts: qcom: hamoa-iot-evk: Add backlight support for eDP panel
Date: Thu, 6 Nov 2025 11:15:45 +0100 [thread overview]
Message-ID: <29ef2def-4073-4a77-8437-41cdfac2fa9d@oss.qualcomm.com> (raw)
In-Reply-To: <20251106-hamoa_dvt_backlight-v2-1-9f844c8f8110@oss.qualcomm.com>
On 11/6/25 8:12 AM, Yongxing Mou wrote:
> 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
next prev parent reply other threads:[~2025-11-06 10:15 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-06 7:12 Yongxing Mou
2025-11-06 8:43 ` Abel Vesa
2025-11-07 2:29 ` Yongxing Mou
2025-11-06 10:15 ` Konrad Dybcio [this message]
2025-11-07 2:35 ` Yongxing Mou
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=29ef2def-4073-4a77-8437-41cdfac2fa9d@oss.qualcomm.com \
--to=konrad.dybcio@oss.qualcomm.com \
--cc=andersson@kernel.org \
--cc=conor+dt@kernel.org \
--cc=devicetree@vger.kernel.org \
--cc=konradybcio@kernel.org \
--cc=krzk+dt@kernel.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=robh@kernel.org \
--cc=yongxing.mou@oss.qualcomm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®