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dt-bindings: soc: amlogic: document System Control registers

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Document the System Control registers regions found on all Amlogic
SoC families and it's clock, power, pinctrl and phy subnodes.

The regions has various independent registers tied to other
hardware devices, thus the syscon compatible.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230706-b4-amlogic-bindings-convert-take2-v3-3-f63de6f12dcc@linaro.org
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
This commit is contained in:
Neil Armstrong 2023-07-06 16:52:34 +02:00 committed by Jerome Brunet
parent 74f3d8673d
commit 4d023beb39
1 changed files with 160 additions and 0 deletions
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Documentation/devicetree/bindings/soc/amlogic/amlogic,meson-gx-hhi-sysctrl.yaml Normal file
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/soc/amlogic/amlogic,meson-gx-hhi-sysctrl.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Amlogic Meson System Control registers
maintainers:
- Neil Armstrong <neil.armstrong@linaro.org>
properties:
compatible:
items:
- enum:
- amlogic,meson-gx-hhi-sysctrl
- amlogic,meson-gx-ao-sysctrl
- amlogic,meson-axg-hhi-sysctrl
- amlogic,meson-axg-ao-sysctrl
- const: simple-mfd
- const: syscon
reg:
maxItems: 1
clock-controller:
type: object
power-controller:
$ref: /schemas/power/amlogic,meson-ee-pwrc.yaml
pinctrl:
type: object
phy:
type: object
allOf:
- if:
properties:
compatible:
enum:
- amlogic,meson-gx-hhi-sysctrl
- amlogic,meson-axg-hhi-sysctrl
then:
properties:
clock-controller:
$ref: /schemas/clock/amlogic,gxbb-clkc.yaml#
required:
- power-controller
- if:
properties:
compatible:
enum:
- amlogic,meson-gx-ao-sysctrl
- amlogic,meson-axg-ao-sysctrl
then:
properties:
clock-controller:
$ref: /schemas/clock/amlogic,gxbb-aoclkc.yaml#
power-controller: false
phy: false
- if:
properties:
compatible:
enum:
- amlogic,meson-gx-hhi-sysctrl
then:
properties:
phy: false
- if:
properties:
compatible:
enum:
- amlogic,meson-axg-hhi-sysctrl
then:
properties:
phy:
oneOf:
- $ref: /schemas/phy/amlogic,g12a-mipi-dphy-analog.yaml
- $ref: /schemas/phy/amlogic,meson-axg-mipi-pcie-analog.yaml
required:
- compatible
- reg
- clock-controller
additionalProperties: false
examples:
- |
bus@c883c000 {
compatible = "simple-bus";
reg = <0xc883c000 0x2000>;
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x0 0xc883c000 0x2000>;
sysctrl: system-controller@0 {
compatible = "amlogic,meson-gx-hhi-sysctrl", "simple-mfd", "syscon";
reg = <0 0x400>;
clock-controller {
compatible = "amlogic,gxbb-clkc";
#clock-cells = <1>;
clocks = <&xtal>;
clock-names = "xtal";
};
power-controller {
compatible = "amlogic,meson-gxbb-pwrc";
#power-domain-cells = <1>;
amlogic,ao-sysctrl = <&sysctrl_AO>;
resets = <&reset_viu>,
<&reset_venc>,
<&reset_vcbus>,
<&reset_bt656>,
<&reset_dvin>,
<&reset_rdma>,
<&reset_venci>,
<&reset_vencp>,
<&reset_vdac>,
<&reset_vdi6>,
<&reset_vencl>,
<&reset_vid_lock>;
reset-names = "viu", "venc", "vcbus", "bt656", "dvin",
"rdma", "venci", "vencp", "vdac", "vdi6",
"vencl", "vid_lock";
clocks = <&clk_vpu>, <&clk_vapb>;
clock-names = "vpu", "vapb";
};
};
};
bus@c8100000 {
compatible = "simple-bus";
reg = <0xc8100000 0x100000>;
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x0 0xc8100000 0x100000>;
sysctrl_AO: system-controller@0 {
compatible = "amlogic,meson-gx-ao-sysctrl", "simple-mfd", "syscon";
reg = <0 0x100>;
clock-controller {
compatible = "amlogic,meson-gxbb-aoclkc", "amlogic,meson-gx-aoclkc";
#clock-cells = <1>;
#reset-cells = <1>;
clocks = <&xtal>, <&clk81>;
clock-names = "xtal", "mpeg-clk";
};
};
};