Re: [PATCH v2 2/4] arm64: dts: qcom: shikra-cqm-evk: Enable display and add ili7807s panel

[Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>]

On 7/14/26 9:21 AM, Arpit Saini wrote:
> Hi Dmitry,Konrad
> 
> On 7/10/2026 6:09 PM, Dmitry Baryshkov wrote:
>> On Fri, Jul 10, 2026 at 05:28:04PM +0530, Arpit Saini wrote:
>>> Hi Konrad,
>>>
>>> On 7/10/2026 2:31 PM, Arpit Saini wrote:

[...]

>>> Normally the backlight EN pin is controlled by a backlight driver.
>>>
>>> However, this panel uses MIPI DCS based backlight control with no
>>>
>>> separate backlight driver. Since there is no driver to assert gpio91,
>>>
>>> we control it via the panel's pinctrl default state..
>>>
>>> So this is platform specific pin , we need this to enable/disable
>>>
>>> the backlight.
>>
>> Handle it from the panel driver. Also please fix your editor to prevent
>> it from inserting extra empty lines.
>>
> 
> Earlier I handled it through panel driver, but this GPIO is specific to our
> Qualcomm Daughter Card, it is not going to the panel connector.

So is it an enable pin of a voltage regulator maybe? I'm having trouble
understanding how this is all tied together, given the panel driver
uses DCS commands to control the backlight status

Konrad