linux-kernel - Re: [PATCH v2 2/3] spi: dt-bindings: fsl-dspi: Convert to yaml format

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Date: Thu, 13 Jun 2024 14:17:58 -0600
From: Rob Herring <robh@...nel.org>
To: Frank Li <Frank.Li@....com>
Cc: Vladimir Oltean <olteanv@...il.com>, Mark Brown <broonie@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
	linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	imx@...ts.linux.dev
Subject: Re: [PATCH v2 2/3] spi: dt-bindings: fsl-dspi: Convert to yaml format

On Thu, Jun 13, 2024 at 03:00:38PM -0400, Frank Li wrote:
> Convert dt-binding spi-fsl-dspi.txt to yaml format.
> 
> Addtional changes during convert:
> - compatible string "fsl,ls1028a-dspi" can be followed by
> fsl,ls1021a-v1.0-dspi.
> - Change "dspi0@...2c000" to "spi@...2c000" in example.
> - Reorder properties in example.
> - Use GIC include in example.
> - Remove fsl,spi-cs-sck-delay and fsl,spi-sck-cs-delay by use common SPI
> property.

You can't just remove them. These are mature platforms using them and 
replacing the properties would break kernels without your driver change. 
The only compatible change would be put both properties in the DT.

You need to pick up what Vladimir did:

https://lore.kernel.org/linux-spi/20221111224651.577729-1-vladimir.oltean@nxp.com/

> - Use compatible string 'jedec,spi-nor' in example.
> 
> Signed-off-by: Frank Li <Frank.Li@....com>
> ---
>  .../devicetree/bindings/spi/fsl,dspi.yaml          | 115 +++++++++++++++++++++
>  .../devicetree/bindings/spi/spi-fsl-dspi.txt       |  65 ------------
>  2 files changed, 115 insertions(+), 65 deletions(-)