Re: [PATCH v3 1/3] arm64: dts: qcom: lemans-evk: Add LVDS display overlay

[Konrad Dybcio]

On 9/8/26 6:33 PM, Vishnu Saini wrote:
> On Mon, Sep 07, 2026 at 01:40:52PM +0200, Konrad Dybcio wrote:
>> On 9/5/26 3:30 AM, Vishnu Saini wrote:
>>> The Lemans EVK IFP mezzanine supports LVDS display output using the
>>> Lontium LT9211C DSI-to-LVDS bridge. The bridge is connected to the
>>> DSI0 output and drives a dual-channel 1920x1080 LVDS panel in
>>> VESA-24 mapping.
>>>
>>> Add a DTBO overlay, lemans-evk-lvds-boe,dv215fhm-r01.dtso, that wires
>>> up the LT9211C bridge on I2C1 (address 0x2d) with reset on GPIO37,
>>> a panel-lvds node for the boe,dv215fhm-r01 panel (matched against the
>>> panel-simple-lvds-dual-ports binding, which supplies the panel's size
>>> and timing internally), and an LCD display bias regulator supplied
>>> through the GPIO expander. DSI power is provided by vreg_s4a.
>>
>> [...]
>>
>>> --- a/arch/arm64/boot/dts/qcom/Makefile
>>> +++ b/arch/arm64/boot/dts/qcom/Makefile
>>> @@ -58,6 +58,10 @@ lemans-evk-el2-dtbs := lemans-evk.dtb lemans-el2.dtbo
>>>  dtb-$(CONFIG_ARCH_QCOM)	+= lemans-evk-el2.dtb
>>>  lemans-evk-ifp-mezzanine-dtbs	:= lemans-evk.dtb lemans-evk-ifp-mezzanine.dtbo
>>>  dtb-$(CONFIG_ARCH_QCOM)	+= lemans-evk-ifp-mezzanine.dtb
>>> +
>>> +lemans-evk-lvds-boe,dv215fhm-r01-dtbs := lemans-evk.dtb lemans-evk-ifp-mezzanine.dtbo lemans-evk-lvds-boe,dv215fhm-r01.dtbo
>>> +dtb-$(CONFIG_ARCH_QCOM)	+= lemans-evk-lvds-boe,dv215fhm-r01.dtb
>>
>> I have very mixed feelings regarding putting a comma in the
>> filename..
> 
> I named it similar to "talos-evk-lvds-auo,g133han01.dtb", but let know if i need to remove comma.

Ah, I didn't know this is already in place. Then whoever would have issues
with it would probably harden their tooling against it, it's probably fine.

Konrad