linux-kernel - Re: [PATCH v3] spi: dt-bindings: Document CS active-high

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Message-ID: <173444954482.1831986.10950873767411380900.robh@kernel.org>
Date: Tue, 17 Dec 2024 09:32:25 -0600
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Iker Pedrosa <ikerpedrosam@...il.com>
Cc: javierm@...hat.com, krzk+dt@...nel.org, linux-spi@...r.kernel.org,
	conor+dt@...nel.org, linux-kernel@...r.kernel.org,
	broonie@...nel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v3] spi: dt-bindings: Document CS active-high


On Mon, 16 Dec 2024 10:57:33 +0100, Iker Pedrosa wrote:
> The current documentation does not clearly explain how to invert the SPI
> CS signal to make it active-high. This makes it very difficult to
> understand.
> 
> This patch adds a simple explanation on how to set the CS line in
> active-high and adds an example to make it easier for users who need
> that setup for their SPI peripherals.
> 
> Link: https://forums.raspberrypi.com/viewtopic.php?t=378222
> Signed-off-by: Iker Pedrosa <ikerpedrosam@...il.com>
> ---
> 
> Changes in v3:
> - Use subject line reflecting the style of the subsystem (Mark Brown)
> - Change compatible display to an existing one and adapt SPI MAX frequency (Rob
>   Herring)
> 
> Changes in v2:
> - Include header for GPIO_ACTIVE_HIGH (Rob Herring)
> 
>  .../bindings/spi/spi-controller.yaml          | 25 +++++++++++++++++++
>  1 file changed, 25 insertions(+)
> 

Reviewed-by: Rob Herring (Arm) <robh@...nel.org>