linux-kernel - Re: [PATCH v3 1/3] dt-bindings: phy: rockchip: Add Naneng combo PHY bindings

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Date:   Sun, 14 Nov 2021 12:32:13 +0100
From:   Johan Jonker <jbx6244@...il.com>
To:     Yifeng Zhao <yifeng.zhao@...k-chips.com>, heiko@...ech.de,
        robh+dt@...nel.org
Cc:     devicetree@...r.kernel.org, vkoul@...nel.org,
        michael.riesch@...fvision.net, linux-rockchip@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-phy@...ts.infradead.org, kishon@...com,
        p.zabel@...gutronix.de, cl@...k-chips.com
Subject: Re: [PATCH v3 1/3] dt-bindings: phy: rockchip: Add Naneng combo PHY
 bindings

Hi Yifeng,

Driver and documents don't match.
Add a separate patch before this one to add to syscon.yaml:

"rockchip,rk3568-pipe-phy-grf", "syscon"
"rockchip,rk3568-pipe-grf", "syscon"

On 10/25/21 10:06 AM, Yifeng Zhao wrote:
> Add the compatible strings for the Naneng combo PHY found on rockchip SoC.
> 
> Signed-off-by: Yifeng Zhao <yifeng.zhao@...k-chips.com>
> ---
> 
> Changes in v3: None
> Changes in v2:
> - Fix dtschema/dtc warnings/errors
> 
>  .../phy/phy-rockchip-naneng-combphy.yaml      | 98 +++++++++++++++++++
>  1 file changed, 98 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/phy/phy-rockchip-naneng-combphy.yaml
> 
> diff --git a/Documentation/devicetree/bindings/phy/phy-rockchip-naneng-combphy.yaml b/Documentation/devicetree/bindings/phy/phy-rockchip-naneng-combphy.yaml
> new file mode 100644
> index 000000000000..55ad33d902ec
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/phy-rockchip-naneng-combphy.yaml
> @@ -0,0 +1,98 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/phy/phy-rockchip-naneng-combphy.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Rockchip SoC Naneng Combo Phy Device Tree Bindings
> +
> +maintainers:
> +  - Heiko Stuebner <heiko@...ech.de>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - rockchip,rk3568-naneng-combphy
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:

> +    minItems: 1

Remove.
DT node has 3 clocks and not 1.

> +    items:
> +      - description: reference clock
> +      - description: apb clock
> +      - description: pipe clock
> +
> +  clock-names:

> +    minItems: 1

dito

> +    items:
> +      - const: ref
> +      - const: apb
> +      - const: pipe
> +
> +  '#phy-cells':
> +    const: 1
> +
> +  resets:

> +    minItems: 1

Remove.
DT node has 2 resets and not 1.

> +    items:
> +      - description: exclusive apb reset line
> +      - description: exclusive PHY reset line
> +
> +  reset-names:

> +    minItems: 1

dito

There are 2 resets. When the reset order does matter then use
devm_reset_control_array_get() to get the resets.
The use of reset-names is then not needed.

> +    items:
> +      - const: combphy-apb
> +      - const: combphy
> +

Missing properties.

rockchip,dis-u3otg0-port

rockchip,dis-u3otg1-port

rockchip,enable-ssc

rockchip,ext-refclk

rockchip,sgmii-mac-sel


> +  rockchip,pipe-grf:
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +    description:

> +      Some additional phy settings are access through GRF regs.

are accessed

> +
> +  rockchip,pipe-phy-grf:
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +    description:

> +      Some additional pipe settings are access through GRF regs.


are accessed

> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - clock-names
> +  - '#phy-cells'
> +  - resets

> +  - reset-names

dito

> +  - rockchip,pipe-grf
> +  - rockchip,pipe-phy-grf
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +
> +    #include <dt-bindings/clock/rk3568-cru.h>
> +
> +    pipegrf: syscon@...50000 {


compatible = "rockchip,rk3568-pipe-grf", "syscon";

> +      reg = <0xfdc50000 0x1000>;
> +    };
> +
> +    pipe_phy_grf0: syscon@...70000 {

compatible = "rockchip,rk3568-pipe-phy-grf", "syscon";

> +      reg = <0xfdc70000 0x1000>;
> +    };
> +
> +    combphy0_us: phy@...20000 {
> +      compatible = "rockchip,rk3568-naneng-combphy";
> +      reg = <0xfe820000 0x100>;
> +      #phy-cells = <1>;
> +      clocks = <&pmucru CLK_PCIEPHY0_REF>, <&cru PCLK_PIPEPHY0>,
> +        <&cru PCLK_PIPE>;
> +      clock-names = "ref", "apb", "pipe";
> +      assigned-clocks = <&pmucru CLK_PCIEPHY0_REF>;
> +      assigned-clock-rates = <100000000>;
> +      resets = <&cru SRST_P_PIPEPHY0>, <&cru SRST_PIPEPHY0>;

> +      reset-names = "combphy-apb", "combphy";

dito

> +      rockchip,pipe-grf = <&pipegrf>;
> +      rockchip,pipe-phy-grf = <&pipe_phy_grf0>;
> +    };
>