[PATCH v2 1/3] dt-bindings: mmc: Add sdhci support for Canaan k230
From: Jiayu Du <hidden>
Date: 2026-02-26 11:59:50
Also in:
linux-mmc, linux-riscv, lkml
Subsystem:
multimedia card (mmc), secure digital (sd) and sdio subsystem, open firmware and flattened device tree bindings, the rest · Maintainers:
Ulf Hansson, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
The Canaan k230 uses the SDHCI from Synopsys. Add compatible strings to the k230. The k230 has two controllers. MMC0 supports eMMC, while MMC1 supports SDIO. Signed-off-by: Jiayu Du <redacted> --- .../bindings/mmc/snps,dwcmshc-sdhci.yaml | 29 +++++++++++++++++++ 1 file changed, 29 insertions(+)
diff --git a/Documentation/devicetree/bindings/mmc/snps,dwcmshc-sdhci.yaml b/Documentation/devicetree/bindings/mmc/snps,dwcmshc-sdhci.yaml
index 7e7c55dc2440..ae63363c0eae 100644
--- a/Documentation/devicetree/bindings/mmc/snps,dwcmshc-sdhci.yaml
+++ b/Documentation/devicetree/bindings/mmc/snps,dwcmshc-sdhci.yaml@@ -23,6 +23,8 @@ properties: - const: sophgo,sg2044-dwcmshc - const: sophgo,sg2042-dwcmshc - enum: + - canaan,k230-emmc + - canaan,k230-sdio - rockchip,rk3568-dwcmshc - rockchip,rk3588-dwcmshc - snps,dwcmshc-sdhci
@@ -55,6 +57,11 @@ properties: reset-names: maxItems: 5 + canaan,usb-phy: + $ref: /schemas/types.yaml#/definitions/phandle + description: Phandle to the Canaan K230 USB PHY node required for + k230-emmc/sdio. + rockchip,txclk-tapnum: description: Specify the number of delay for tx sampling. $ref: /schemas/types.yaml#/definitions/uint8
@@ -87,6 +94,28 @@ required: allOf: - $ref: mmc-controller.yaml# + - if: + properties: + compatible: + contains: + enum: + - canaan,k230-emmc + - canaan,k230-sdio + then: + properties: + clocks: + minItems: 5 + maxItems: 5 + clock-names: + items: + - const: core + - const: bus + - const: axi + - const: block + - const: timer + required: + - canaan,usb-phy + - if: properties: compatible:
--
2.53.0