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Message-ID: <CAFqH_531fkh_gZbOMuzhsRj-72NeWsPyxWoFQh9bAF3CZwTfNw@mail.gmail.com>
Date: Wed, 7 Oct 2020 22:57:02 +0200
From: Enric Balletbo Serra <eballetbo@...il.com>
To: Rob Herring <robh@...nel.org>
Cc: Enric Balletbo i Serra <enric.balletbo@...labora.com>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
Heiko Stübner <heiko@...ech.de>,
linux-kernel <linux-kernel@...r.kernel.org>,
Doug Anderson <dianders@...omium.org>,
"open list:ARM/Rockchip SoC..." <linux-rockchip@...ts.infradead.org>,
Collabora Kernel ML <kernel@...labora.com>,
Linux ARM <linux-arm-kernel@...ts.infradead.org>,
Caesar Wang <wxt@...k-chips.com>
Subject: Re: [PATCH v3] dt-bindings: power: rockchip: Convert to json-schema
Hi Rob,
Missatge de Rob Herring <robh@...nel.org> del dia dc., 7 d’oct. 2020 a
les 17:12:
>
> On Mon, Sep 21, 2020 at 11:29:51AM +0200, Enric Balletbo i Serra wrote:
> > Convert the soc/rockchip/power_domain.txt binding document to json-schema
> > and move to the power bindings directory.
> >
> > Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
> > ---
> >
> > Changes in v3:
> > - Fixed tab errors found by bot
> >
> > Changes in v2:
> > - Fixed a warning that says that 'syscon' should not be used alone.
> > - Use patternProperties to define a new level for power-domains.
> > - Add const values for power-domain-cells, address-cells, etc.
> >
> > .../power/rockchip,power-controller.yaml | 207 ++++++++++++++++++
> > .../bindings/soc/rockchip/power_domain.txt | 136 ------------
> > 2 files changed, 207 insertions(+), 136 deletions(-)
> > create mode 100644 Documentation/devicetree/bindings/power/rockchip,power-controller.yaml
> > delete mode 100644 Documentation/devicetree/bindings/soc/rockchip/power_domain.txt
> >
> > diff --git a/Documentation/devicetree/bindings/power/rockchip,power-controller.yaml b/Documentation/devicetree/bindings/power/rockchip,power-controller.yaml
> > new file mode 100644
> > index 000000000000..b23ea37e2a08
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/power/rockchip,power-controller.yaml
> > @@ -0,0 +1,207 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/power/rockchip,power-controller.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Rockchip Power Domains
> > +
> > +maintainers:
> > + - Caesar Wang <wxt@...k-chips.com>
> > + - Heiko Stuebner <heiko@...ech.de>
> > +
> > +description: |
> > + Rockchip processors include support for multiple power domains which can be
> > + powered up/down by software based on different application scenes to save power.
> > +
> > + Power domains contained within power-controller node are generic power domain
> > + providers documented in Documentation/devicetree/bindings/power/power-domain.yaml.
> > +
> > + IP cores belonging to a power domain should contain a 'power-domains'
> > + property that is a phandle for the power domain node representing the domain.
> > +
> > +properties:
> > + $nodename:
> > + const: power-controller
> > +
> > + compatible:
> > + enum:
> > + - rockchip,px30-power-controller
> > + - rockchip,rk3036-power-controller
> > + - rockchip,rk3066-power-controller
> > + - rockchip,rk3128-power-controller
> > + - rockchip,rk3188-power-controller
> > + - rockchip,rk3228-power-controller
> > + - rockchip,rk3288-power-controller
> > + - rockchip,rk3328-power-controller
> > + - rockchip,rk3366-power-controller
> > + - rockchip,rk3368-power-controller
> > + - rockchip,rk3399-power-controller
> > +
> > + '#power-domain-cells':
> > + const: 1
> > +
> > + '#address-cells':
> > + const: 1
> > +
> > + '#size-cells':
> > + const: 0
> > +
> > +patternProperties:
> > + "^power-domain@[0-9]+$":
>
> unit-addresses are hex.
>
> > + type: object
> > + description: |
> > + Represents the power domains within the power controller node as documented
> > + in Documentation/devicetree/bindings/power/power-domain.yaml.
> > +
> > + properties:
> > +
> > + '#power-domain-cells':
> > + description:
> > + Must be 0 for nodes representing a single PM domain and 1 for nodes
> > + providing multiple PM domains.
> > +
> > + '#address-cells':
> > + const: 1
> > +
> > + '#size-cells':
> > + const: 0
> > +
> > + reg:
> > + description: |
> > + Power domain index. Valid values are defined in:
> > + "include/dt-bindings/power/px30-power.h" - for PX30 type power domain.
> > + "include/dt-bindings/power/rk3036-power.h" - for RK3036 type power domain.
> > + "include/dt-bindings/power/rk3066-power.h" - for RK3066 type power domain.
> > + "include/dt-bindings/power/rk3128-power.h" - for RK3128 type power domain.
> > + "include/dt-bindings/power/rk3188-power.h" - for RK3188 type power domain.
> > + "include/dt-bindings/power/rk3228-power.h" - for RK3228 type power domain.
> > + "include/dt-bindings/power/rk3288-power.h" - for RK3288 type power domain.
> > + "include/dt-bindings/power/rk3328-power.h" - for RK3328 type power domain.
> > + "include/dt-bindings/power/rk3366-power.h" - for RK3366 type power domain.
> > + "include/dt-bindings/power/rk3368-power.h" - for RK3368 type power domain.
> > + "include/dt-bindings/power/rk3399-power.h" - for RK3399 type power domain.
> > + maxItems: 1
>
> Range of values?
>
> > +
> > + clocks:
> > + description: |
> > + A number of phandles to clocks that need to be enabled while power domain
> > + switches state.
>
> Can you at least put a range of how many clocks?
>
> > +
> > + pm_qos:
> > + description: |
> > + A number of phandles to qos blocks which need to be saved and restored
> > + while power domain switches state.
>
> And here.
>
> > +
> > + required:
> > + - reg
>
> additionalProperties: false
>
> Which in turn means the nested power domains will throw an error, so you
> can do:
>
> patternProperties:
> "^power-domain@[0-9a-f]+$":
> $ref: '#/patternProperties/^power-domain@[0-9a-f]+$'
>
When I tried this I got the following error:
rockchip,power-controller.yaml:
patternProperties:^power-domain@[0-9a-f]+$:patternProperties:^power-domain@[0-9a-f]+$:$ref:
'#/patternProperties/^power-domain@[0-9a-f]+$' is not a
'uri-reference'
Not sure if is my environment or I am still doing something silly, can
you confirm that this works for you? It doesn't seem to be any binding
doing this actually.
Thanks,
Enric
> > +
> > +required:
> > + - compatible
> > + - '#power-domain-cells'
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > + - |
> > + #include <dt-bindings/clock/rk3399-cru.h>
> > + #include <dt-bindings/power/rk3399-power.h>
> > +
> > + soc {
> > + #address-cells = <2>;
> > + #size-cells = <2>;
> > +
> > + qos_hdcp: qos@...90000 {
> > + compatible = "rockchip,rk3399-qos","syscon";
>
> space ^
>
> > + reg = <0x0 0xffa90000 0x0 0x20>;
> > + };
> > +
> > + qos_iep: qos@...98000 {
> > + compatible = "rk3399-qos","syscon";
> > + reg = <0x0 0xffa98000 0x0 0x20>;
> > + };
> > +
> > + qos_rga_r: qos@...b0000 {
> > + compatible = "rk3399-qos","syscon";
> > + reg = <0x0 0xffab0000 0x0 0x20>;
> > + };
> > +
> > + qos_rga_w: qos@...b0080 {
> > + compatible = "rk3399-qos","syscon";
> > + reg = <0x0 0xffab0080 0x0 0x20>;
> > + };
> > +
> > + qos_video_m0: qos@...b8000 {
> > + compatible = "rk3399-qos","syscon";
> > + reg = <0x0 0xffab8000 0x0 0x20>;
> > + };
> > +
> > + qos_video_m1_r: qos@...c0000 {
> > + compatible = "rk3399-qos","syscon";
> > + reg = <0x0 0xffac0000 0x0 0x20>;
> > + };
> > +
> > + qos_video_m1_w: qos@...c0080 {
> > + compatible = "rk3399-qos","syscon";
> > + reg = <0x0 0xffac0080 0x0 0x20>;
> > + };
> > +
> > + power-management@...10000 {
> > + compatible = "rockchip,rk3399-pmu", "syscon", "simple-mfd";
> > + reg = <0x0 0xff310000 0x0 0x1000>;
> > +
> > + power-controller {
> > + compatible = "rockchip,rk3399-power-controller";
> > + #power-domain-cells = <1>;
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > +
> > + /* These power domains are grouped by VD_CENTER */
> > + power-domain@...399_PD_IEP {
> > + reg = <RK3399_PD_IEP>;
> > + clocks = <&cru ACLK_IEP>,
> > + <&cru HCLK_IEP>;
> > + pm_qos = <&qos_iep>;
> > + #power-domain-cells = <0>;
> > + };
> > + power-domain@...399_PD_RGA {
> > + reg = <RK3399_PD_RGA>;
> > + clocks = <&cru ACLK_RGA>,
> > + <&cru HCLK_RGA>;
> > + pm_qos = <&qos_rga_r>,
> > + <&qos_rga_w>;
> > + #power-domain-cells = <0>;
> > + };
> > + power-domain@...399_PD_VCODEC {
> > + reg = <RK3399_PD_VCODEC>;
> > + clocks = <&cru ACLK_VCODEC>,
> > + <&cru HCLK_VCODEC>;
> > + pm_qos = <&qos_video_m0>;
> > + #power-domain-cells = <0>;
> > + };
> > + power-domain@...399_PD_VDU {
> > + reg = <RK3399_PD_VDU>;
> > + clocks = <&cru ACLK_VDU>,
> > + <&cru HCLK_VDU>;
> > + pm_qos = <&qos_video_m1_r>,
> > + <&qos_video_m1_w>;
> > + #power-domain-cells = <0>;
> > + };
> > + power-domain@...399_PD_VIO {
> > + reg = <RK3399_PD_VIO>;
> > + #power-domain-cells = <1>;
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > +
> > + power-domain@...399_PD_HDCP {
> > + reg = <RK3399_PD_HDCP>;
> > + clocks = <&cru ACLK_HDCP>,
> > + <&cru HCLK_HDCP>,
> > + <&cru PCLK_HDCP>;
> > + pm_qos = <&qos_hdcp>;
> > + #power-domain-cells = <0>;
> > + };
> > + };
> > + };
> > + };
> > + };
>
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