[PATCH net-next v11 1/7] dt-bindings: phy: document the serdes PHY on sa8255p
From: Bartosz Golaszewski <hidden>
Date: 2026-06-29 11:29:17
Also in:
imx, linux-amlogic, linux-arm-kernel, linux-arm-msm, linux-devicetree, linux-mips, linux-renesas-soc, linux-riscv, linux-rockchip, linux-sunxi, lkml
Subsystem:
arm/qualcomm mailing list, generic phy framework, open firmware and flattened device tree bindings, the rest · Maintainers:
Vinod Koul, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Describe the SGMII/SerDes PHY present on the Qualcomm sa8255p platforms. This is essentially the same hardware as sa8775p rev3 but the PHY is managed by firmware over SCMI. Signed-off-by: Bartosz Golaszewski <redacted> --- .../bindings/phy/qcom,sa8255p-dwmac-sgmii-phy.yaml | 51 ++++++++++++++++++++++ 1 file changed, 51 insertions(+)
diff --git a/Documentation/devicetree/bindings/phy/qcom,sa8255p-dwmac-sgmii-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,sa8255p-dwmac-sgmii-phy.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..4cea6926d1c28872ea7b7aad53088dbbcb74fa99
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/qcom,sa8255p-dwmac-sgmii-phy.yaml@@ -0,0 +1,51 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/phy/qcom,sa8255p-dwmac-sgmii-phy.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm SerDes/SGMII ethernet PHY controller (firmware managed) + +maintainers: + - Bartosz Golaszewski <brgl@kernel.org> + +description: + The SerDes PHY sits between the MAC and the external PHY and provides + separate Rx Tx lines. + +properties: + compatible: + const: qcom,sa8255p-dwmac-sgmii-phy + + reg: + items: + - description: serdes + + power-domains: + maxItems: 1 + + power-domain-names: + items: + - const: serdes + + "#phy-cells": + const: 0 + +required: + - compatible + - reg + - "#phy-cells" + - power-domains + - power-domain-names + +additionalProperties: false + +examples: + - | + phy@8901000 { + compatible = "qcom,sa8255p-dwmac-sgmii-phy"; + reg = <0x08901000 0xe10>; + #phy-cells = <0>; + power-domains = <&scmi7_dvfs 0>; + power-domain-names = "serdes"; + };
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