From: Rajan Vaja <[email protected]> Add documentation to describe ZynqMP power domain bindings.
Signed-off-by: Rajan Vaja <[email protected]> Signed-off-by: Jolly Shah <[email protected]> --- .../firmware/xilinx/xlnx,zynqmp-firmware.txt | 47 ++++++++++++++++++++++ 1 file changed, 47 insertions(+) diff --git a/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt b/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt index d215d15..5fa10a0 100644 --- a/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt +++ b/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt @@ -64,6 +64,29 @@ Output clocks are registered based on clock information received from firmware. Output clocks indexes are mentioned in include/dt-bindings/clock/xlnx,zynqmp-clk.h. +----------------------------------------------------------- +Device Tree Bindings for the Xilinx Zynq MPSoC PM domains +----------------------------------------------------------- +The binding for zynqmp-power-controller follow the common +generic PM domain binding[1]. + +[1] Documentation/devicetree/bindings/power/power_domain.txt + +== Zynq MPSoC Generic PM Domain Node == + +Required properties: + - compatible: Must be: "xlnx,zynqmp-power-controller" + +This node contains a number of subnodes, each representing a single PM domain +that PM domain consumer devices reference. + +== PM Domain Nodes == + +Required properties: + - #power-domain-cells: Number of cells in a PM domain specifier. Must be 0. + - pd-id: Domain identifier as defined by platform firmware. + This identifier is passed to the PM firmware. + ------- Example ------- @@ -78,5 +101,29 @@ firmware { clocks = <&pss_ref_clk>, <&video_clk>, <&pss_alt_ref_clk>, <&aux_ref_clk>, <>_crx_ref_clk>; clock-names = "pss_ref_clk", "video_clk", "pss_alt_ref_clk","aux_ref_clk", "gt_crx_ref_clk"; }; + zynqmp-power-controller { + compatible = "xlnx,zynqmp-power-controller"; + + pd_usb0: pd-usb0 { + pd-id = <22>; + #power-domain-cells = <0>; + }; + + pd_sata: pd-sata { + pd-id = <28>; + #power-domain-cells = <0>; + }; + + pd_gpu : pd-gpu { + pd-id = <58 20 21>; + #power-domain-cells = <0>; + }; + }; }; }; + +sata0: ahci@SATA_AHCI_HBA { + ... + power-domains = <&pd_sata>; + ... +}; -- 2.7.4
