Subject: Re: Re: [PATCH v7 1/2] dt-bindings: ethernet: eswin: Document for EIC7700 SoC

From: 李志 <[email-masked]>
Date: Tue, 14 Oct 2025 18:00:38 +0800 (GMT+08:00)

Hi Bo Gan,

Please see the original email. You can refer to the following
supplement about phy0 in the gmac0 DTS node.

Best regards,
Li Zhi
> -----原始邮件-----
> 发件人: "Bo Gan" <[email-masked]>
> 发送时间:2025-10-14 16:53:38 (星期二)
> 收件人: [email-masked], [email-masked], [email-masked], [email-masked], [email-masked], [email-masked], [email-masked], [email-masked], [email-masked], [email-masked], [email-masked], [email-masked], [email-masked], [email-masked], [email-masked], [email-masked], [email-masked], [email-masked], [email-masked], [email-masked], [email-masked], [email-masked], [email-masked], [email-masked], [email-masked], [email-masked]
> 抄送: [email-masked], [email-masked], [email-masked], [email-masked], "Krzysztof Kozlowski" <[email-masked]>
> 主题: Re: [PATCH v7 1/2] dt-bindings: ethernet: eswin: Document for EIC7700 SoC
> 
> On 9/18/25 01:59, [email-masked] wrote:
> > From: Shangjuan Wei <[email-masked]>
> > 
> > Add ESWIN EIC7700 Ethernet controller, supporting clock
> > configuration, delay adjustment and speed adaptive functions.
> > 
> > Signed-off-by: Zhi Li <[email-masked]>
> > Signed-off-by: Shangjuan Wei <[email-masked]>
> > Reviewed-by: Krzysztof Kozlowski <[email-masked]>
> > ---
> >   .../bindings/net/eswin,eic7700-eth.yaml       | 127 ++++++++++++++++++
> >   1 file changed, 127 insertions(+)
> >   create mode 100644 Documentation/devicetree/bindings/net/eswin,eic7700-eth.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/net/eswin,eic7700-eth.yaml b/Documentation/devicetree/bindings/net/eswin,eic7700-eth.yaml
> > new file mode 100644
> > index 000000000000..57d6d0efc126
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/net/eswin,eic7700-eth.yaml
> > @@ -0,0 +1,127 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/net/eswin,eic7700-eth.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Eswin EIC7700 SOC Eth Controller
> > +
> > +maintainers:
> > +  - Shuang Liang <[email-masked]>
> > +  - Zhi Li <[email-masked]>
> > +  - Shangjuan Wei <[email-masked]>
> > +
> > +description:
> > +  Platform glue layer implementation for STMMAC Ethernet driver.
> > +
> > +select:
> > +  properties:
> > +    compatible:
> > +      contains:
> > +        enum:
> > +          - eswin,eic7700-qos-eth
> > +  required:
> > +    - compatible
> > +
> > +allOf:
> > +  - $ref: snps,dwmac.yaml#
> > +
> > +properties:
> > +  compatible:
> > +    items:
> > +      - const: eswin,eic7700-qos-eth
> > +      - const: snps,dwmac-5.20
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  interrupts:
> > +    maxItems: 1
> > +
> > +  interrupt-names:
> > +    const: macirq
> > +
> > +  clocks:
> > +    items:
> > +      - description: AXI clock
> > +      - description: Configuration clock
> > +      - description: GMAC main clock
> > +      - description: Tx clock
> > +
> > +  clock-names:
> > +    items:
> > +      - const: axi
> > +      - const: cfg
> > +      - const: stmmaceth
> > +      - const: tx
> > +
> > +  resets:
> > +    maxItems: 1
> > +
> > +  reset-names:
> > +    items:
> > +      - const: stmmaceth
> > +
> > +  rx-internal-delay-ps:
> > +    enum: [0, 200, 600, 1200, 1600, 1800, 2000, 2200, 2400]
> > +
> > +  tx-internal-delay-ps:
> > +    enum: [0, 200, 600, 1200, 1600, 1800, 2000, 2200, 2400]
> > +
> > +  eswin,hsp-sp-csr:
> > +    $ref: /schemas/types.yaml#/definitions/phandle-array
> > +    items:
> > +      - description: Phandle to HSP(High-Speed Peripheral) device
> > +      - description: Offset of phy control register for internal
> > +                     or external clock selection
> > +      - description: Offset of AXI clock controller Low-Power request
> > +                     register
> > +      - description: Offset of register controlling TX/RX clock delay
> > +    description: |
> > +      High-Speed Peripheral device needed to configure clock selection,
> > +      clock low-power mode and clock delay.
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - clocks
> > +  - clock-names
> > +  - interrupts
> > +  - interrupt-names
> > +  - phy-mode
> > +  - resets
> > +  - reset-names
> > +  - rx-internal-delay-ps
> > +  - tx-internal-delay-ps
> > +  - eswin,hsp-sp-csr
> > +
> > +unevaluatedProperties: false
> > +
> > +examples:
> > +  - |
> > +    ethernet@50400000 {
> > +        compatible = "eswin,eic7700-qos-eth", "snps,dwmac-5.20";
> > +        reg = <0x50400000 0x10000>;
> > +        clocks = <&d0_clock 186>, <&d0_clock 171>, <&d0_clock 40>,
> > +                <&d0_clock 193>;
> > +        clock-names = "axi", "cfg", "stmmaceth", "tx";
> > +        interrupt-parent = <&plic>;
> > +        interrupts = <61>;
> > +        interrupt-names = "macirq";
> > +        phy-mode = "rgmii-id";
> > +        phy-handle = <&phy0>;
> > +        resets = <&reset 95>;
> > +        reset-names = "stmmaceth";
> > +        rx-internal-delay-ps = <200>;
> > +        tx-internal-delay-ps = <200>;
> > +        eswin,hsp-sp-csr = <&hsp_sp_csr 0x100 0x108 0x118>;
> > +        snps,axi-config = <&stmmac_axi_setup>;
> > +        snps,aal;
> > +        snps,fixed-burst;
> > +        snps,tso;
> > +        stmmac_axi_setup: stmmac-axi-config {
> > +            snps,blen = <0 0 0 0 16 8 4>;
> > +            snps,rd_osr_lmt = <2>;
> > +            snps,wr_osr_lmt = <2>;
> > +        };

mdio {
        compatible = "snps,dwmac-mdio";
        status = "okay";
        #address-cells = <1>;
        #size-cells = <0>;

        phy0: ethernet-phy@0 {
                device_type = "ethernet-phy";
                reg = <0>;
                compatible = "ethernet-phy-id001c.c916", "realtek,rtl8211f";
        };
};

> > +    };
> > \ No newline at end of file
> > --
> > 2.17.1
> > 
> 
> Hi ShangJuan,
> 
> I'm active user of HiFive p550. I'd like to test out this driver. Do you have
> the device tree section of phy0 for Hifive p550 board? Or it's optional for
> p550 board and I can just provide an empty &phy0 node? Regarding hsp_sp_csr
> node, I should be able to use
> https://github.com/sifiveinc/riscv-linux/blob/b4a753400e624a0eba3ec475fba2866dd7efb767/arch/riscv/boot/dts/eswin/eic7700.dtsi#L167
> correct?
> 
> Bo