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[v3,3/3] arm64: dts: fsl-ls1043a-rdb: use common spi-cs-setup(hold)-delay-ns

Message ID 20240620-ls_qspi-v3-3-1a2afcf417e4@nxp.com (mailing list archive)
State Superseded
Headers show
Series spi: fsl-dspi: Convert to yaml format and use common SPI property | expand

Commit Message

Frank Li June 20, 2024, 4:58 p.m. UTC
Use SPI common propteries 'spi-cs-setup-delay-ns' and
'spi-cs-hold-delay-ns', mark private properties 'fsl,spi-cs-sck-delay'
and 'fsl,spi-sck-cs-delay' as depericated.

Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
 arch/arm64/boot/dts/freescale/fsl-ls1043a-rdb.dts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

Comments

Vladimir Oltean June 21, 2024, 12:54 p.m. UTC | #1
On Thu, Jun 20, 2024 at 12:58:29PM -0400, Frank Li wrote:
> Use SPI common propteries 'spi-cs-setup-delay-ns' and

properties

> 'spi-cs-hold-delay-ns', mark private properties 'fsl,spi-cs-sck-delay'
> and 'fsl,spi-sck-cs-delay' as depericated.

deprecated

> 
> Signed-off-by: Frank Li <Frank.Li@nxp.com>
> ---
>  arch/arm64/boot/dts/freescale/fsl-ls1043a-rdb.dts | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1043a-rdb.dts b/arch/arm64/boot/dts/freescale/fsl-ls1043a-rdb.dts
> index 26f8540cb101b..fef3534157a1d 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-ls1043a-rdb.dts
> +++ b/arch/arm64/boot/dts/freescale/fsl-ls1043a-rdb.dts
> @@ -104,6 +104,11 @@ flash@0 {
>  		compatible = "n25q128a13", "jedec,spi-nor";  /* 16MB */
>  		reg = <0>;
>  		spi-max-frequency = <1000000>; /* input clock */
> +		/* Add common SPI property */

I guess if you do insist on adding comments for this (not necessary IMO),
we could improve on the stylistic elegance by saying "Standard CS timing
properties replace the deprecated vendor variants below" or something
like that. But currently it doesn't look great when there is a verb in
the present tense and another in the past tense. Also, the plural form
should have been used for 'property'.

Additionally, I don't believe that a new line between the groups of
properties is necessary.

> +		spi-cs-setup-delay-ns = <100>;
> +		spi-cs-hold-delay-ns = <100>;

Do you plan on deprecating the fsl, CS timing parameters tree-wide, or
are you going to stop at the LS1043A-RDB?
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1043a-rdb.dts b/arch/arm64/boot/dts/freescale/fsl-ls1043a-rdb.dts
index 26f8540cb101b..fef3534157a1d 100644
--- a/arch/arm64/boot/dts/freescale/fsl-ls1043a-rdb.dts
+++ b/arch/arm64/boot/dts/freescale/fsl-ls1043a-rdb.dts
@@ -104,6 +104,11 @@  flash@0 {
 		compatible = "n25q128a13", "jedec,spi-nor";  /* 16MB */
 		reg = <0>;
 		spi-max-frequency = <1000000>; /* input clock */
+		/* Add common SPI property */
+		spi-cs-setup-delay-ns = <100>;
+		spi-cs-hold-delay-ns = <100>;
+
+		/* Deprecated below property */
 		fsl,spi-cs-sck-delay = <100>;
 		fsl,spi-sck-cs-delay = <100>;
 	};
@@ -112,6 +117,11 @@  slic@2 {
 		compatible = "maxim,ds26522";
 		reg = <2>;
 		spi-max-frequency = <2000000>;
+		/* Add common SPI property */
+		spi-cs-setup-delay-ns = <100>;
+		spi-cs-hold-delay-ns = <50>;
+
+		/* Deprecated below property */
 		fsl,spi-cs-sck-delay = <100>;
 		fsl,spi-sck-cs-delay = <50>;
 	};
@@ -120,6 +130,11 @@  slic@3 {
 		compatible = "maxim,ds26522";
 		reg = <3>;
 		spi-max-frequency = <2000000>;
+		/* Add common SPI property */
+		spi-cs-setup-delay-ns = <100>;
+		spi-cs-hold-delay-ns = <50>;
+
+		/* Deprecated below property */
 		fsl,spi-cs-sck-delay = <100>;
 		fsl,spi-sck-cs-delay = <50>;
 	};