diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2023-02-14 17:26:43 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-04-06 13:12:45 +0300 |
| commit | 79e8f031bd2b6d123a2022504fbdafd47baaeeb0 (patch) | |
| tree | 5a4f802d5cacf4ba1ba122e2805f6197794a7e67 /Documentation | |
| parent | 7b0faba5591c8b54e8d9e6bdfe712454df2a0237 (diff) | |
| download | linux-79e8f031bd2b6d123a2022504fbdafd47baaeeb0.tar.xz | |
dt-bindings: mtd: jedec,spi-nor: Document CPOL/CPHA support
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/afe470603028db9374930b0c57464b1f6d52bdd3.1676384304.git.geert+renesas@glider.be
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml b/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml index 3fe981b14e2c..54736362378e 100644 --- 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: |