Re: [PATCH v2 03/15] dt-bindings: mfd: Add starfive,jh7110-hdmi-subsystem

[Conor Dooley <conor@kernel.org>]

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On Fri, Aug 28, 2026 at 03:47:27PM +0200, Michal Wilczynski wrote:
> Add the dt-binding for the StarFive JH7110 HDMI subsystem.
> 
> The JH7110 HDMI IP is a monolithic block containing both the digital
> controller and analog PHY in a single register space. This binding
> defines the parent device, which holds the shared register map and
> populates its two children: the PHY and the controller. This is
> necessary to resolve a circular clock dependency between the HDMI block
> and the VOUT clock generator.
> 
> Signed-off-by: Michal Wilczynski <m.wilczynski@samsung.com>
> ---
>  .../mfd/starfive,jh7110-hdmi-subsystem.yaml        | 116 +++++++++++++++++++++
>  1 file changed, 116 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/mfd/starfive,jh7110-hdmi-subsystem.yaml b/Documentation/devicetree/bindings/mfd/starfive,jh7110-hdmi-subsystem.yaml
> new file mode 100644
> index 0000000000000000000000000000000000000000..01f079160ab8c13c6fa4ce3abaac6607021b3792
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/starfive,jh7110-hdmi-subsystem.yaml
> @@ -0,0 +1,116 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mfd/starfive,jh7110-hdmi-subsystem.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: StarFive JH7110 HDMI subsystem
> +
> +maintainers:
> +  - Michal Wilczynski <m.wilczynski@samsung.com>
> +
> +description:
> +  The StarFive JH7110 HDMI block is a monolithic IP containing both
> +  the digital controller logic and the analog PHY logic in a single
> +  register space.
> +
> +properties:
> +  compatible:
> +    const: starfive,jh7110-hdmi-subsystem
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +    description:
> +      NoC display bus clock, which gates access to the whole vout
> +      register region.
> +
> +  resets:
> +    maxItems: 1
> +    description:
> +      NoC display bus reset, which gates access to the whole vout
> +      register region.
> +
> +  power-domains:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - resets
> +  - power-domains

Here you're willing not to have -names properties?

> +
> +patternProperties:
> +  "^phy(@[0-9a-f]+)?$":

These are not pattern properties at all, given they have no variance
because there's no unit addresses involved!
pw-bot: changes-requested

Cheers,
Conor.

> +    $ref: /schemas/phy/starfive,jh7110-inno-hdmi-phy.yaml#
> +  "^controller(@[0-9a-f]+)?$":
> +    $ref: /schemas/display/bridge/starfive,jh7110-inno-hdmi-controller.yaml#
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/starfive,jh7110-crg.h>
> +    #include <dt-bindings/power/starfive,jh7110-pmu.h>
> +    #include <dt-bindings/reset/starfive,jh7110-crg.h>
> +
> +    soc {
> +        #address-cells = <1>;
> +        #size-cells = <1>;
> +
> +        hdmi@29590000 {
> +            compatible = "starfive,jh7110-hdmi-subsystem";
> +            reg = <0x29590000 0x4000>;
> +            clocks = <&syscrg JH7110_SYSCLK_NOC_BUS_DISP_AXI>;
> +            power-domains = <&pwrc JH7110_PD_VOUT>;
> +            resets = <&syscrg JH7110_SYSRST_NOC_BUS_DISP_AXI>;
> +
> +            controller {
> +                compatible = "starfive,jh7110-inno-hdmi-controller";
> +                clocks = <&voutcrg JH7110_VOUTCLK_HDMI_TX_SYS>,
> +                         <&voutcrg JH7110_VOUTCLK_HDMI_TX_MCLK>,
> +                         <&voutcrg JH7110_VOUTCLK_HDMI_TX_BCLK>,
> +                         <&hdmi_phy>;
> +                clock-names = "sys", "mclk", "bclk", "pclk";
> +                interrupts = <99>;
> +                phys = <&hdmi_phy>;
> +                phy-names = "hdmi-phy";
> +                resets = <&voutcrg JH7110_VOUTRST_HDMI_TX_HDMI>;
> +                reset-names = "hdmi_tx";
> +
> +                ports {
> +                    #address-cells = <1>;
> +                    #size-cells = <0>;
> +
> +                    port@0 {
> +                        reg = <0>;
> +
> +                        endpoint {
> +                            remote-endpoint = <&dpu_out_dpi0>;
> +                        };
> +                    };
> +
> +                    port@1 {
> +                        reg = <1>;
> +
> +                        endpoint {
> +                            remote-endpoint = <&hdmi_con_in>;
> +                        };
> +                    };
> +                };
> +            };
> +
> +            hdmi_phy: phy {
> +                compatible = "starfive,jh7110-inno-hdmi-phy";
> +                #clock-cells = <0>;
> +                clock-output-names = "hdmi_pclk";
> +                clocks = <&xin24m>;
> +                clock-names = "refoclk";
> +                #phy-cells = <0>;
> +            };
> +        };
> +    };
> +...
> 
> -- 
> 2.34.1
> 

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