On RK3568, the SGMII interface can be routed to either GMAC0 or GMAC1 via the pipe_sgmii_mac_sel bit in the pipe GRF registers. Add the optional "rockchip,sgmii-mac-sel" property to allow the device tree to select which GMAC controller is used for SGMII. The property takes a value of 0 (GMAC0) or 1 (GMAC1), with 0 being the default. This is necessary for boards such as the Ariaboard Photonicat, where the SGMII interface is connected to GMAC0 and needs to be explicitly configured. Signed-off-by: Coia Prant --- .../bindings/phy/phy-rockchip-naneng-combphy.yaml | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/phy/phy-rockchip-naneng-combphy.yaml b/Documentation/devicetree/bindings/phy/phy-rockchip-naneng-combphy.yaml index 379b08bd9e97a..6173192e31ab2 100644 --- a/Documentation/devicetree/bindings/phy/phy-rockchip-naneng-combphy.yaml +++ b/Documentation/devicetree/bindings/phy/phy-rockchip-naneng-combphy.yaml @@ -80,6 +80,13 @@ properties: description: Some additional pipe settings are accessed through GRF regs. + rockchip,sgmii-mac-sel: + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1] + default: 0 + description: + Select gmac0 or gmac1 to be used as SGMII controller. + "#phy-cells": const: 1 -- 2.47.3