linux-kernel - Re: [PATCH 1/2] dt-bindings: display: Add Sharp Memory LCD bindings

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Message-ID: <ko6kavj46gm5py3vtfnt6zdka5ar2zigmpg72kt4zr6f3tbhwr@nbbhn726oo36>
Date: Sun, 28 Jul 2024 08:56:52 -0400
From: Alex Lanzano <lanzano.alex@...il.com>
To: Krzysztof Kozlowski <krzk@...nel.org>
Cc: mehdi.djait@...tlin.com, 
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>, 
	Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>, 
	Daniel Vetter <daniel@...ll.ch>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: display: Add Sharp Memory LCD bindings

On Sun, Jul 28, 2024 at 10:40:23AM GMT, Krzysztof Kozlowski wrote:
> On 27/07/2024 18:30, Alex Lanzano wrote:
> > On Thu, Jul 25, 2024 at 08:17:01AM GMT, Krzysztof Kozlowski wrote:
> >> On 25/07/2024 02:47, Alex Lanzano wrote:
> >>> +
> >>> +properties:
> >>> +  compatible:
> >>> +    enum:
> >>> +      - sharp,ls010b7dh04
> >>> +      - sharp,ls011b7dh03
> >>> +      - sharp,ls012b7dd01
> >>> +      - sharp,ls013b7dh03
> >>> +      - sharp,ls013b7dh05
> >>> +      - sharp,ls018b7dh02
> >>> +      - sharp,ls027b7dh01
> >>> +      - sharp,ls027b7dh01a
> >>> +      - sharp,ls032b7dd02
> >>> +      - sharp,ls044q7dh01
> >>> +
> >>> +  reg:
> >>> +    maxItems: 1
> >>> +
> >>> +  spi-cs-high: true
> >>
> >> You can drop it.
> >>
> > 
> > This is a required property in order for the display to function correctly.
> > But I have no issues removing it if there's a better place to document it.
> 
> The sharp LCD device or the board (e.g. via some inversion)?
> 

The sharp LCD device itself.

https://cdn.sparkfun.com/assets/d/e/8/9/7/LS013B7DH03_datasheet.pdf
Page 16 of the PDF below shows the timing chart for it if interested