Subject: Re: [PATCH V2 robh dt/next] dt-bindings: mfd: add Broadcom CRU

From: Rob Herring <[email-masked]>
Date: Wed, 19 May 2021 13:32:54 -0500

On Wed, May 19, 2021 at 10:20:49AM +0200, Rafał Miłecki wrote:
> From: Rafał Miłecki <[email-masked]>
> 
> CRU is a block used in e.g. Northstar devices. It can be seen in the
> bcm5301x.dtsi and this binding documents its proper usage.
> 
> Signed-off-by: Rafał Miłecki <[email-masked]>
> ---
> V2: Use complete binding & change additionalProperties to false
> 
> NOTICE: this patch is based on top of the linux-next as it requires:
> ac5f8197d15c ("dt-bindings: pinctrl: convert Broadcom Northstar to the json-schema")
> 08e9fdfbb224 ("dt-bindings: thermal: brcm,ns-thermal: Convert to the json-schema")
> AND merged [email-masked]:Broadcom/stblinux.git devicetree/next as it requires:
> 8f711f68cffd ("dt-bindings: clock: brcm, iproc-clocks: convert to the json-schema")
> 
> This is reworked version of the
> [PATCH robh next] dt-bindings: bus: add Broadcom CRU
> https://patchwork.ozlabs.org/project/devicetree-bindings/patch/[email-masked]/
> ---
>  .../devicetree/bindings/mfd/brcm,cru.yaml     | 89 +++++++++++++++++++
>  1 file changed, 89 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mfd/brcm,cru.yaml
> 
> diff --git a/Documentation/devicetree/bindings/mfd/brcm,cru.yaml b/Documentation/devicetree/bindings/mfd/brcm,cru.yaml
> new file mode 100644
> index 000000000000..d92424cc8226
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/brcm,cru.yaml
> @@ -0,0 +1,89 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mfd/brcm,cru.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Broadcom CRU
> +
> +maintainers:
> +  - Rafał Miłecki <[email-masked]>
> +
> +description: |
> +  Broadcom CRU ("Clock and Reset Unit" or "Central Resource Unit") is a hardware
> +  block grouping smaller blocks. On Broadcom Northstar platform it contains e.g.
> +  clocks, pinctrl, USB PHY and thermal.
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - brcm,ns-cru
> +      - const: simple-mfd
> +
> +  reg:
> +    description: CRU registers
> +
> +  ranges: true
> +
> +  "#address-cells":
> +    const: 1
> +
> +  "#size-cells":
> +    const: 1
> +
> +  pinctrl:
> +    $ref: ../pinctrl/brcm,ns-pinmux.yaml
> +
> +patternProperties:
> +  '^lcpll0@[a-f0-9]+$':
> +    $ref: ../clock/brcm,iproc-clocks.yaml
> +
> +  '^genpll@[a-f0-9]+$':
> +    $ref: ../clock/brcm,iproc-clocks.yaml

clock-controller@... for both.

With that changed,

Reviewed-by: Rob Herring <[email-masked]>

> +
> +  '^thermal@[a-f0-9]+$':
> +    $ref: ../thermal/brcm,ns-thermal.yaml
> +
> +additionalProperties: false
> +
> +required:
> +  - reg
> +
> +examples:
> +  - |
> +    cru-bus@1800c100 {
> +        compatible = "brcm,ns-cru", "simple-mfd";
> +        reg = <0x1800c100 0x1d0>;
> +        ranges;
> +        #address-cells = <1>;
> +        #size-cells = <1>;
> +
> +        lcpll0@100 {
> +            #clock-cells = <1>;
> +            compatible = "brcm,nsp-lcpll0";
> +            reg = <0x100 0x14>;
> +            clocks = <&osc>;
> +            clock-output-names = "lcpll0", "pcie_phy", "sdio", "ddr_phy";
> +        };
> +
> +        genpll@140 {
> +            #clock-cells = <1>;
> +            compatible = "brcm,nsp-genpll";
> +            reg = <0x140 0x24>;
> +            clocks = <&osc>;
> +            clock-output-names = "genpll", "phy", "ethernetclk", "usbclk",
> +                                 "iprocfast", "sata1", "sata2";
> +        };
> +
> +        pinctrl {
> +            compatible = "brcm,bcm4708-pinmux";
> +            offset = <0x1c0>;
> +        };
> +
> +        thermal@2c0 {
> +            compatible = "brcm,ns-thermal";
> +            reg = <0x2c0 0x10>;
> +            #thermal-sensor-cells = <0>;
> +        };
> +    };
> -- 
> 2.26.2
> 

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