[PATCH v2 1/2] mmc: dt-bindings: sdhci-of-aspeed: Add AST2700 fallback compatibles
From: Ryan Chen <ryan_chen@aspeedtech.com>
Date: 2026-03-17 05:56:53
Also in:
linux-arm-kernel, linux-aspeed, linux-mmc, lkml, openbmc
Subsystem:
aspeed sd/mmc driver, multimedia card (mmc), secure digital (sd) and sdio subsystem, open firmware and flattened device tree bindings, the rest · Maintainers:
Andrew Jeffery, Ulf Hansson, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Describe AST2700 as compatible with the existing AST2600 SD controller and SDHCI bindings by requiring fallback compatibles in the device tree. Also require `resets` on the AST2700 SD controller node. Signed-off-by: Ryan Chen <ryan_chen@aspeedtech.com> --- Changes in v2: - add missing blank line - modify ast2700 compatible items const --- .../devicetree/bindings/mmc/aspeed,sdhci.yaml | 39 +++++++++++++++++----- 1 file changed, 31 insertions(+), 8 deletions(-)
diff --git a/Documentation/devicetree/bindings/mmc/aspeed,sdhci.yaml b/Documentation/devicetree/bindings/mmc/aspeed,sdhci.yaml
index d24950ccea95..9c8e068964a1 100644
--- a/Documentation/devicetree/bindings/mmc/aspeed,sdhci.yaml
+++ b/Documentation/devicetree/bindings/mmc/aspeed,sdhci.yaml@@ -22,10 +22,14 @@ description: |+ properties: compatible: - enum: - - aspeed,ast2400-sd-controller - - aspeed,ast2500-sd-controller - - aspeed,ast2600-sd-controller + oneOf: + - const: aspeed,ast2400-sd-controller + - const: aspeed,ast2500-sd-controller + - const: aspeed,ast2600-sd-controller + - items: + - const: aspeed,ast2700-sd-controller + - const: aspeed,ast2600-sd-controller + reg: maxItems: 1 description: Common configuration registers
@@ -38,6 +42,21 @@ properties: maxItems: 1 description: The SD/SDIO controller clock gate + resets: + maxItems: 1 + +if: + properties: + compatible: + contains: + const: aspeed,ast2700-sd-controller +then: + required: + - resets +else: + properties: + resets: false + patternProperties: "^sdhci@[0-9a-f]+$": type: object
@@ -46,10 +65,14 @@ patternProperties: properties: compatible: - enum: - - aspeed,ast2400-sdhci - - aspeed,ast2500-sdhci - - aspeed,ast2600-sdhci + oneOf: + - const: aspeed,ast2400-sdhci + - const: aspeed,ast2500-sdhci + - const: aspeed,ast2600-sdhci + - items: + - const: aspeed,ast2700-sdhci + - const: aspeed,ast2600-sdhci + reg: maxItems: 1 description: The SDHCI registers
--
2.34.1