linux-kernel - Re: [PATCH v4 1/3] spi: fsl-dspi: use common proptery 'spi-cs-setup(hold)-delay-ns'

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Message-ID: <20240625123248.2svpybglw2ydd6gg@skbuf>
Date: Tue, 25 Jun 2024 15:32:48 +0300
From: Vladimir Oltean <olteanv@...il.com>
To: Frank Li <Frank.Li@....com>
Cc: Mark Brown <broonie@...nel.org>, Rob Herring <robh@...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 v4 1/3] spi: fsl-dspi: use common proptery
 'spi-cs-setup(hold)-delay-ns'

On Mon, Jun 24, 2024 at 02:55:27PM -0400, Frank Li wrote:
> Use SPI common DT binding properties 'spi-cs-setup-delay-ns' and
> 'spi-cs-hold-delay-ns'. If these properties do not exist, fall back to
> legacy 'fsl,spi-cs-sck-delay' and 'fsl,spi-sck-cs-delay'.
> 
> Signed-off-by: Frank Li <Frank.Li@....com>
> ---
> Change from v3 to v4
> - check spi_delay_to_ns() return value, which may return negative value as
> error code. It will be very big value when cast to u32.
> ---

Reviewed-by: Vladimir Oltean <olteanv@...il.com>