This is a note to let you know that I've just added the patch titled
dt-bindings: mtd: jedec,spi-nor: Document CPOL/CPHA support
to the 6.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
dt-bindings-mtd-jedec-spi-nor-document-cpol-cpha-support.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a56cde41340ac4049fa6edac9e6cfbcd2804074e Mon Sep 17 00:00:00 2001
From: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Date: Tue, 14 Feb 2023 15:26:43 +0100
Subject: dt-bindings: mtd: jedec,spi-nor: Document CPOL/CPHA support
From: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
commit a56cde41340ac4049fa6edac9e6cfbcd2804074e upstream.
SPI EEPROMs typically support both SPI Mode 0 (CPOL=CPHA=0) and Mode 3
(CPOL=CPHA=1). However, using the latter is currently flagged as an
error by "make dtbs_check", e.g.:
arch/arm/boot/dts/r8a7791-koelsch.dtb: flash@0: Unevaluated properties are not allowed ('spi-cpha', 'spi-cpol' were unexpected)
From schema: Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml
Fix this by documenting support for CPOL=CPHA=1.
Fixes: 233363aba72ac638 ("spi/panel: dt-bindings: drop CPHA and CPOL from common properties")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Reviewed-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Reviewed-by: Tudor Ambarus <tudor.ambarus@xxxxxxxxxx>
Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
Link: https://lore.kernel.org/linux-mtd/afe470603028db9374930b0c57464b1f6d52bdd3.1676384304.git.geert+renesas@xxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml | 7 +++++++
1 file changed, 7 insertions(+)
--- a/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml
+++ b/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml
@@ -76,6 +76,13 @@ properties:
If "broken-flash-reset" is present then having this property does not
make any difference.
+ spi-cpol: true
+ spi-cpha: true
+
+dependencies:
+ spi-cpol: [ spi-cpha ]
+ spi-cpha: [ spi-cpol ]
+
unevaluatedProperties: false
examples:
Patches currently in stable-queue which might be from geert+renesas@xxxxxxxxx are
queue-6.2/dt-bindings-mtd-jedec-spi-nor-document-cpol-cpha-support.patch
