diff options
| author | Chen-Yu Tsai <wens@kernel.org> | 2026-03-02 23:35:56 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2026-03-11 11:34:10 +0000 |
| commit | 743956bb9990214ff1dac66ef59e27221dc3c2d8 (patch) | |
| tree | 1ed8fab93c00311af2f47927502c16aa2bf0e1b5 /Documentation | |
| parent | 85b731ad4bbf6eb3fedf267ab00be3596f148432 (diff) | |
spi: dt-bindings: sun6i: Allow Dual SPI and Quad SPI for newer SoCs
Support for Dual SPI and Quad SPI was added to the Linux driver in
commit 0605d9fb411f ("spi: sun6i: add quirk for dual and quad SPI modes
support") and commit 25453d797d7a ("spi: sun6i: add dual and quad SPI
modes support for R329/D1/R528/T113s").
However the binding was never updated to allow these modes. Allow them
by adding 2 and 4 to the allowed bus widths for the newer variants.
While at it, also add 0 to the allowed bus widths. This signals that
RX or TX is not available, i.e. the MISO or MOSI pin is disconnected.
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Chen-Yu Tsai <wens@kernel.org>
Link: https://patch.msgid.link/20260302153559.3199783-2-wens@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml | 29 |
1 files changed, 24 insertions, 5 deletions
diff --git a/Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml b/Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml index a6067030c5ed..6af4ff233158 100644 --- a/Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml +++ b/Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml @@ -6,9 +6,6 @@ $schema: http://devicetree.org/meta-schemas/core.yaml# title: Allwinner A31 SPI Controller -allOf: - - $ref: spi-controller.yaml - maintainers: - Chen-Yu Tsai <wens@csie.org> - Maxime Ripard <mripard@kernel.org> @@ -82,11 +79,11 @@ patternProperties: spi-rx-bus-width: items: - - const: 1 + enum: [0, 1, 2, 4] spi-tx-bus-width: items: - - const: 1 + enum: [0, 1, 2, 4] required: - compatible @@ -95,6 +92,28 @@ required: - clocks - clock-names +allOf: + - $ref: spi-controller.yaml + - if: + not: + properties: + compatible: + contains: + enum: + - allwinner,sun50i-r329-spi + - allwinner,sun55i-a523-spi + then: + patternProperties: + "^.*@[0-9a-f]+": + properties: + spi-rx-bus-width: + items: + enum: [0, 1] + + spi-tx-bus-width: + items: + enum: [0, 1] + unevaluatedProperties: false examples: |