From: Chunyan Zhang <chunyan.zhang@xxxxxxxxxx> add a new bindings to describe sc9863a clock compatible string. Signed-off-by: Chunyan Zhang <chunyan.zhang@xxxxxxxxxx> --- .../bindings/clock/sprd,sc9863a-clk.yaml | 103 ++++++++++++++++++ 1 file changed, 103 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/sprd,sc9863a-clk.yaml diff --git a/Documentation/devicetree/bindings/clock/sprd,sc9863a-clk.yaml b/Documentation/devicetree/bindings/clock/sprd,sc9863a-clk.yaml new file mode 100644 index 000000000000..e19577a6142a --- /dev/null +++ b/Documentation/devicetree/bindings/clock/sprd,sc9863a-clk.yaml @@ -0,0 +1,103 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright 2019 Unisoc Inc. +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/clock/sprd,sc9863a-clk.yaml#"; +$schema: "http://devicetree.org/meta-schemas/core.yaml#"; + +title: SC9863A Clock Control Unit Device Tree Bindings + +maintainers: + - Orson Zhai <orsonzhai@xxxxxxxxx> + - Baolin Wang <baolin.wang7@xxxxxxxxx> + - Chunyan Zhang <zhang.lyra@xxxxxxxxx> + +properties: + "#clock-cells": + const: 1 + + compatible : + enum: + - sprd,sc9863a-ap-clk + - sprd,sc9863a-aon-clk + - sprd,sc9863a-apahb-gate + - sprd,sc9863a-pmu-gate + - sprd,sc9863a-aonapb-gate + - sprd,sc9863a-pll + - sprd,sc9863a-mpll + - sprd,sc9863a-rpll + - sprd,sc9863a-dpll + - sprd,sc9863a-mm-gate + - sprd,sc9863a-apapb-gate + + clocks: + maxItems: 4 + description: | + The input parent clock(s) phandle for this clock, only list fixed + clocks which are declared in devicetree. + + clock-names: + maxItems: 4 + description: | + Clock name strings used for driver to reference. + items: + - const: ext-26m + - const: ext-32k + - const: ext-4m + - const: rco-100m + + reg: + description: | + Contain the registers base address and length. + +required: + - compatible + - '#clock-cells' + +if: + properties: + compatible: + enum: + - sprd,sc9863a-ap-clk + - sprd,sc9863a-aon-clk +then: + required: + - reg + +else: + description: | + Other SC9863a clock nodes should be the child of a syscon node with + the required property: + + - compatible: Should be the following: + "sprd,sc9863a-glbregs", "syscon", "simple-mfd" + + The 'reg' property is also required if there is a sub range of + registers for the clocks that are contiguous. + +examples: + - | + ap_clk: clock-controller@21500000 { + compatible = "sprd,sc9863a-ap-clk"; + reg = <0 0x21500000 0 0x1000>; + clocks = <&ext_26m>, <&ext_32k>; + clock-names = "ext-26m", "ext-32k"; + #clock-cells = <1>; + }; + + - | + ap_ahb_regs: syscon@20e00000 { + compatible = "sprd,sc9863a-glbregs", "syscon", "simple-mfd"; + reg = <0 0x20e00000 0 0x4000>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0 0x20e00000 0x4000>; + + apahb_gate: apahb-gate@0 { + compatible = "sprd,sc9863a-apahb-gate"; + reg = <0x0 0x1020>; + #clock-cells = <1>; + }; + }; + +... -- 2.20.1
