The USB3/PCIe comb PHY on the K3 is a complex PHY group that can provide multiple phy for both PCIe and USB controller. Its mux configuration is controlled by the APMU syscon device.
Signed-off-by: Inochi Amaoto <[email protected]> --- .../bindings/phy/spacemit,k3-comb-phy.yaml | 63 +++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/spacemit,k3-comb-phy.yaml diff --git a/Documentation/devicetree/bindings/phy/spacemit,k3-comb-phy.yaml b/Documentation/devicetree/bindings/phy/spacemit,k3-comb-phy.yaml new file mode 100644 index 000000000000..7aa2cf9301b7 --- /dev/null +++ b/Documentation/devicetree/bindings/phy/spacemit,k3-comb-phy.yaml @@ -0,0 +1,63 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/phy/spacemit,k3-comb-phy.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Spacemit K3 PCIE/USB3 Comb PHY + +maintainers: + - Inochi Amaoto <[email protected]> + +properties: + compatible: + const: spacemit,k3-comb-phy + + reg: + maxItems: 1 + + "#phy-cells": + const: 2 + description: + The first one is phy id, the second one is phy type. + + spacemit,apb-spare: + $ref: /schemas/types.yaml#/definitions/phandle + description: + Phandle to APB SPARE system controller interface, used for + PHY calibration. + + spacemit,apmu: + $ref: /schemas/types.yaml#/definitions/phandle-array + items: + - items: + - description: phandle of APMU syscon + - description: configuration of the PHY lanes + description: | + Phandle to control PHY mux configuration. The configuration + is described as follows: + bit 4: 0 - PCIe A x8 mode, 1 - PCIe lane share mode + bit 3: 0 - PCIe A x4 mode, 1 - PCIe A x2 and PCIe B x2 mode + bit 2: 0 - PCIe C lane 0 is PCIe mode , 1 - USB mode + bit 1: 0 - PCIe C lane 1 is PCIe mode , 1 - USB mode + bit 0: 0 - PCIe D lane is PCIe mode , 1 - USB mode + + The bit[3:0] is only valid when bit 4 is 1. + +required: + - compatible + - "#phy-cells" + - spacemit,apb-spare + - spacemit,apmu + +additionalProperties: false + +examples: + - | + phy@81d00000 { + compatible = "spacemit,k3-comb-phy"; + reg = <0x81d00000 0x600000>; + #phy-cells = <2>; + spacemit,apb-spare = <&apb_spare>; + spacemit,apmu = <&apmu 0x00>; + }; -- 2.54.0
