From: Geert Uytterhoeven geert+renesas@glider.be
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@vger.kernel.org Signed-off-by: Geert Uytterhoeven geert+renesas@glider.be Reviewed-by: Miquel Raynal miquel.raynal@bootlin.com Reviewed-by: Krzysztof Kozlowski krzysztof.kozlowski@linaro.org Reviewed-by: Tudor Ambarus tudor.ambarus@linaro.org Signed-off-by: Miquel Raynal miquel.raynal@bootlin.com Link: https://lore.kernel.org/linux-mtd/afe470603028db9374930b0c57464b1f6d52bdd3.1... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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: