[PATCH v1] dt-bindings: clock: convert rockchip,px30-cru.txt to YAML

[Krzysztof Kozlowski]

On 29/03/2022 21:50, Johan Jonker wrote:
> Convert rockchip,px30-cru.txt to YAML.
> 
> Changes against original bindings:
>   Use compatible string: "rockchip,px30-pmucru"
> 
> Signed-off-by: Johan Jonker <jbx6244 at gmail.com>
> ---
>  .../bindings/clock/rockchip,px30-cru.txt      | 70 --------------
>  .../bindings/clock/rockchip,px30-cru.yaml     | 96 +++++++++++++++++++
>  2 files changed, 96 insertions(+), 70 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/clock/rockchip,px30-cru.txt
>  create mode 100644 Documentation/devicetree/bindings/clock/rockchip,px30-cru.yaml
> 
> diff --git a/Documentation/devicetree/bindings/clock/rockchip,px30-cru.txt b/Documentation/devicetree/bindings/clock/rockchip,px30-cru.txt
> deleted file mode 100644
> index 55e78cdde..000000000
> --- a/Documentation/devicetree/bindings/clock/rockchip,px30-cru.txt
> +++ /dev/null
> @@ -1,70 +0,0 @@
> -* Rockchip PX30 Clock and Reset Unit
> -
> -The PX30 clock controller generates and supplies clock to various
> -controllers within the SoC and also implements a reset controller for SoC
> -peripherals.
> -
> -Required Properties:
> -
> -- compatible: PMU for CRU should be "rockchip,px30-pmu-cru"
> -- compatible: CRU should be "rockchip,px30-cru"
> -- reg: physical base address of the controller and length of memory mapped
> -  region.
> -- clocks: A list of phandle + clock-specifier pairs for the clocks listed
> -          in clock-names
> -- clock-names: Should contain the following:
> -  - "xin24m" for both PMUCRU and CRU
> -  - "gpll" for CRU (sourced from PMUCRU)
> -- #clock-cells: should be 1.
> -- #reset-cells: should be 1.
> -
> -Optional Properties:
> -
> -- rockchip,grf: phandle to the syscon managing the "general register files"
> -  If missing, pll rates are not changeable, due to the missing pll lock status.
> -
> -Each clock is assigned an identifier and client nodes can use this identifier
> -to specify the clock which they consume. All available clocks are defined as
> -preprocessor macros in the dt-bindings/clock/px30-cru.h headers and can be
> -used in device tree sources. Similar macros exist for the reset sources in
> -these files.
> -
> -External clocks:
> -
> -There are several clocks that are generated outside the SoC. It is expected
> -that they are defined using standard clock bindings with following
> -clock-output-names:
> - - "xin24m" - crystal input - required,
> - - "xin32k" - rtc clock - optional,
> - - "i2sx_clkin" - external I2S clock - optional,
> - - "gmac_clkin" - external GMAC clock - optional
> -
> -Example: Clock controller node:
> -
> -	pmucru: clock-controller at ff2bc000 {
> -		compatible = "rockchip,px30-pmucru";
> -		reg = <0x0 0xff2bc000 0x0 0x1000>;
> -		#clock-cells = <1>;
> -		#reset-cells = <1>;
> -	};
> -
> -	cru: clock-controller at ff2b0000 {
> -		compatible = "rockchip,px30-cru";
> -		reg = <0x0 0xff2b0000 0x0 0x1000>;
> -		rockchip,grf = <&grf>;
> -		#clock-cells = <1>;
> -		#reset-cells = <1>;
> -	};
> -
> -Example: UART controller node that consumes the clock generated by the clock
> -  controller:
> -
> -	uart0: serial at ff030000 {
> -		compatible = "rockchip,px30-uart", "snps,dw-apb-uart";
> -		reg = <0x0 0xff030000 0x0 0x100>;
> -		interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>;
> -		clocks = <&pmucru SCLK_UART0_PMU>, <&pmucru PCLK_UART0_PMU>;
> -		clock-names = "baudclk", "apb_pclk";
> -		reg-shift = <2>;
> -		reg-io-width = <4>;
> -	};
> diff --git a/Documentation/devicetree/bindings/clock/rockchip,px30-cru.yaml b/Documentation/devicetree/bindings/clock/rockchip,px30-cru.yaml
> new file mode 100644
> index 000000000..aa095f375
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/rockchip,px30-cru.yaml
> @@ -0,0 +1,96 @@
> +# SPDX-License-Identifier: GPL-2.0
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/clock/rockchip,px30-cru.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Rockchip PX30 Clock and Reset Unit (CRU)
> +
> +maintainers:
> +  - Elaine Zhang <zhangqing at rock-chips.com>
> +  - Heiko Stuebner <heiko at sntech.de>
> +
> +description: |
> +  The PX30 clock controller generates and supplies clocks to various
> +  controllers within the SoC and also implements a reset controller for SoC
> +  peripherals.
> +  Each clock is assigned an identifier and client nodes can use this identifier
> +  to specify the clock which they consume. All available clocks are defined as
> +  preprocessor macros in the dt-bindings/clock/px30-cru.h headers and can be
> +  used in device tree sources. Similar macros exist for the reset sources in
> +  these files.
> +  There are several clocks that are generated outside the SoC. It is expected
> +  that they are defined using standard clock bindings with following
> +  clock-output-names:
> +    - "xin24m"     - crystal input       - required
> +    - "xin32k"     - rtc clock           - optional
> +    - "i2sx_clkin" - external I2S clock  - optional
> +    - "gmac_clkin" - external GMAC clock - optional
> +
> +properties:
> +  compatible:
> +    enum:
> +      - rockchip,px30-cru
> +      - rockchip,px30-pmucru
> +
> +  reg:
> +    maxItems: 1
> +
> +  "#clock-cells":
> +    const: 1
> +
> +  "#reset-cells":
> +    const: 1
> +
> +  clocks:
> +    minItems: 1
> +    items:
> +      - description: Clock for both PMUCRU and CRU
> +      - description: Clock for CRU (sourced from PMUCRU)
> +
> +  clock-names:
> +    minItems: 1
> +    items:
> +      - const: xin24m
> +      - const: gpll

You need allOf:if:then: constraining clocks and clock-names per compatible.


Best regards,
Krzysztof