From 51ae335a9f7dd2ee3b11f68fd134dbde75750d7c Mon Sep 17 00:00:00 2001 From: Dylan Hung Date: Mon, 18 Apr 2022 09:40:57 +0800 Subject: dt-bindings: net: add reset property for aspeed, ast2600-mdio binding The AST2600 MDIO bus controller has a reset control bit and must be deasserted before manipulating the MDIO controller. By default, the hardware asserts the reset so the driver only need to deassert it. Regarding to the old DT blobs which don't have reset property in them, the reset deassertion is usually done by the bootloader so the reset property is optional to work with them. OpenBMC-Staging-Count: 1 Signed-off-by: Dylan Hung Reviewed-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20220418014059.3054-2-dylan_hung@aspeedtech.com Signed-off-by: Joel Stanley --- Documentation/devicetree/bindings/net/aspeed,ast2600-mdio.yaml | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/net/aspeed,ast2600-mdio.yaml b/Documentation/devicetree/bindings/net/aspeed,ast2600-mdio.yaml index 1c88820cbcdf..f81eda8cb0a5 100644 --- a/Documentation/devicetree/bindings/net/aspeed,ast2600-mdio.yaml +++ b/Documentation/devicetree/bindings/net/aspeed,ast2600-mdio.yaml @@ -20,10 +20,14 @@ allOf: properties: compatible: const: aspeed,ast2600-mdio + reg: maxItems: 1 description: The register range of the MDIO controller instance + resets: + maxItems: 1 + required: - compatible - reg @@ -34,11 +38,13 @@ unevaluatedProperties: false examples: - | + #include mdio0: mdio@1e650000 { compatible = "aspeed,ast2600-mdio"; reg = <0x1e650000 0x8>; #address-cells = <1>; #size-cells = <0>; + resets = <&syscon ASPEED_RESET_MII>; ethphy0: ethernet-phy@0 { compatible = "ethernet-phy-ieee802.3-c22"; -- cgit v1.2.3