linux-kernel - Re: [PATCH] sh: j2: drop incorrect SPI controller max frequency property

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Date: Fri, 29 Mar 2024 23:44:01 -0500
From: Rob Landley <rob@...dley.net>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
 Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>,
 Yoshinori Sato <ysato@...rs.sourceforge.jp>, Rich Felker <dalias@...c.org>,
 John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>,
 devicetree@...r.kernel.org, linux-sh@...r.kernel.org,
 linux-kernel@...r.kernel.org
Cc: Kousik Sanagavarapu <five231003@...il.com>
Subject: Re: [PATCH] sh: j2: drop incorrect SPI controller max frequency
 property

On 3/22/24 01:42, Krzysztof Kozlowski wrote:
> The J2 SPI controller bindings never allowed spi-max-frequency property
> in the controller node.  Neither old spi-bus.txt bindings, nor new DT
> schema allows it.  Linux driver does not parse that property from
> controller node, thus drop it from DTS as incorrect hardware
> description.  The SPI child device has already the same property with
> the same value, so functionality should not be affected.
> 
> Cc: Kousik Sanagavarapu <five231003@...il.com>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

Tested-by: Rob Landley <rob@...dley.net>

(By which I mean a 6.8 kernel with this patch applied booted to a shell prompt
on my J2 turtle board.)

Rob