Re: [PATCH 01/23] arm64: zynqmp: Describe TI phy as ethernet-phy-id

Laurent Pinchart
2023-05-10T06:53:05Z

Hi Michal,

Thank you for the patch.

On Tue, May 02, 2023 at 03:35:29PM +0200, Michal Simek wrote:
> TI DP83867 is using strapping based on MIO pins. Tristate setup can influce
> PHY address. That's why switch description with ethernet-phy-id compatible
> string which enable calling reset. PHY itself setups phy address after
> power up or reset.

I'm sorry but I don't understand this :-(

> Phy reset is done via gpio.
>
> Signed-off-by: Michal Simek <michal.simek@amd.com>
> ---
>
> Checkpatch is reporting issue
> warning: DT compatible string "ethernet-phy-id2000.a231" appears un-documented
> but it should be fully aligned with
> Documentation/devicetree/bindings/net/ethernet-phy.yaml
> ---
> .../boot/dts/xilinx/zynqmp-zcu102-revA.dts | 23 +++++++++++------
> .../boot/dts/xilinx/zynqmp-zcu102-revB.dts | 25 +++++++++++--------
> .../boot/dts/xilinx/zynqmp-zcu104-revA.dts | 22 ++++++++++------
> .../boot/dts/xilinx/zynqmp-zcu104-revC.dts | 22 ++++++++++------
> .../boot/dts/xilinx/zynqmp-zcu106-revA.dts | 22 ++++++++++------
> .../boot/dts/xilinx/zynqmp-zcu111-revA.dts | 22 ++++++++++------
> 6 files changed, 90 insertions(+), 46 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-zcu102-revA.dts b/arch/arm64/boot/dts/xilinx/zynqmp-zcu102-revA.dts
> index 13c43324f1d2..c193579400cf 100644
> --- a/arch/arm64/boot/dts/xilinx/zynqmp-zcu102-revA.dts
> +++ b/arch/arm64/boot/dts/xilinx/zynqmp-zcu102-revA.dts
> @@ -2,7 +2,8 @@
> /*
> * dts file for Xilinx ZynqMP ZCU102 RevA
> *
> - * (C) Copyright 2015 - 2021, Xilinx, Inc.
> + * (C) Copyright 2015 - 2022, Xilinx, Inc.
> + * (C) Copyright 2022 - 2023, Advanced Micro Devices, Inc.
> *
> * Michal Simek <michal.simek@xilinx.com>
> */
> @@ -200,13 +201,19 @@ &gem3 {
> phy-mode = "rgmii-id";
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_gem3_default>;
> - phy0: ethernet-phy@21 {
> - reg = <21>;
> - ti,rx-internal-delay = <0x8>;
> - ti,tx-internal-delay = <0xa>;
> - ti,fifo-depth = <0x1>;
> - ti,dp83867-rxctrl-strap-quirk;
> - /* reset-gpios = <&tca6416_u97 6 GPIO_ACTIVE_LOW>; */
> + mdio: mdio {

The "mdio" label isn't needed. Same below.

> + #address-cells = <1>;
> + #size-cells = <0>;
> + phy0: ethernet-phy@21 {
> + #phy-cells = <1>;
> + compatible = "ethernet-phy-id2000.a231";
> + reg = <21>;
> + ti,rx-internal-delay = <0x8>;
> + ti,tx-internal-delay = <0xa>;
> + ti,fifo-depth = <0x1>;
> + ti,dp83867-rxctrl-strap-quirk;
> + reset-gpios = <&tca6416_u97 6 GPIO_ACTIVE_LOW>;
> + };
> };
> };
>
> diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-zcu102-revB.dts b/arch/arm64/boot/dts/xilinx/zynqmp-zcu102-revB.dts
> index f7d718ff116b..00b930f20718 100644
> --- a/arch/arm64/boot/dts/xilinx/zynqmp-zcu102-revB.dts
> +++ b/arch/arm64/boot/dts/xilinx/zynqmp-zcu102-revB.dts
> @@ -2,7 +2,8 @@
> /*
> * dts file for Xilinx ZynqMP ZCU102 RevB
> *
> - * (C) Copyright 2016 - 2021, Xilinx, Inc.
> + * (C) Copyright 2016 - 2022, Xilinx, Inc.
> + * (C) Copyright 2022 - 2023, Advanced Micro Devices, Inc.
> *
> * Michal Simek <michal.simek@xilinx.com>
> */
> @@ -16,16 +17,20 @@ / {
>
> &gem3 {
> phy-handle = <&phyc>;
> - phyc: ethernet-phy@c {
> - reg = <0xc>;
> - ti,rx-internal-delay = <0x8>;
> - ti,tx-internal-delay = <0xa>;
> - ti,fifo-depth = <0x1>;
> - ti,dp83867-rxctrl-strap-quirk;
> - /* reset-gpios = <&tca6416_u97 6 GPIO_ACTIVE_LOW>; */
> + mdio: mdio {
> + phyc: ethernet-phy@c {
> + #phy-cells = <0x1>;
> + compatible = "ethernet-phy-id2000.a231";
> + reg = <0xc>;
> + ti,rx-internal-delay = <0x8>;
> + ti,tx-internal-delay = <0xa>;
> + ti,fifo-depth = <0x1>;
> + ti,dp83867-rxctrl-strap-quirk;
> + reset-gpios = <&tca6416_u97 6 GPIO_ACTIVE_LOW>;
> + };
> + /* Cleanup from RevA */
> + /delete-node/ ethernet-phy@21;
> };
> - /* Cleanup from RevA */
> - /delete-node/ ethernet-phy@21;
> };
>
> /* Fix collision with u61 */
> diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-zcu104-revA.dts b/arch/arm64/boot/dts/xilinx/zynqmp-zcu104-revA.dts
> index 485585c491f4..11c1eaef9f53 100644
> --- a/arch/arm64/boot/dts/xilinx/zynqmp-zcu104-revA.dts
> +++ b/arch/arm64/boot/dts/xilinx/zynqmp-zcu104-revA.dts
> @@ -2,7 +2,8 @@
> /*
> * dts file for Xilinx ZynqMP ZCU104
> *
> - * (C) Copyright 2017 - 2021, Xilinx, Inc.
> + * (C) Copyright 2017 - 2022, Xilinx, Inc.
> + * (C) Copyright 2022 - 2023, Advanced Micro Devices, Inc.
> *
> * Michal Simek <michal.simek@xilinx.com>
> */
> @@ -109,12 +110,19 @@ &gem3 {
> phy-mode = "rgmii-id";
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_gem3_default>;
> - phy0: ethernet-phy@c {
> - reg = <0xc>;
> - ti,rx-internal-delay = <0x8>;
> - ti,tx-internal-delay = <0xa>;
> - ti,fifo-depth = <0x1>;
> - ti,dp83867-rxctrl-strap-quirk;
> + mdio: mdio {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + phy0: ethernet-phy@c {
> + #phy-cells = <1>;
> + compatible = "ethernet-phy-id2000.a231";
> + reg = <0xc>;
> + ti,rx-internal-delay = <0x8>;
> + ti,tx-internal-delay = <0xa>;
> + ti,fifo-depth = <0x1>;
> + ti,dp83867-rxctrl-strap-quirk;
> + reset-gpios = <&tca6416_u97 6 GPIO_ACTIVE_LOW>;
> + };
> };
> };
>
> diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-zcu104-revC.dts b/arch/arm64/boot/dts/xilinx/zynqmp-zcu104-revC.dts
> index 44ec9edd2452..c06c138fa3e5 100644
> --- a/arch/arm64/boot/dts/xilinx/zynqmp-zcu104-revC.dts
> +++ b/arch/arm64/boot/dts/xilinx/zynqmp-zcu104-revC.dts
> @@ -2,7 +2,8 @@
> /*
> * dts file for Xilinx ZynqMP ZCU104
> *
> - * (C) Copyright 2017 - 2021, Xilinx, Inc.
> + * (C) Copyright 2017 - 2022, Xilinx, Inc.
> + * (C) Copyright 2022 - 2023, Advanced Micro Devices, Inc.
> *
> * Michal Simek <michal.simek@xilinx.com>
> */
> @@ -114,12 +115,19 @@ &gem3 {
> phy-mode = "rgmii-id";
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_gem3_default>;
> - phy0: ethernet-phy@c {
> - reg = <0xc>;
> - ti,rx-internal-delay = <0x8>;
> - ti,tx-internal-delay = <0xa>;
> - ti,fifo-depth = <0x1>;
> - ti,dp83867-rxctrl-strap-quirk;
> + mdio: mdio {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + phy0: ethernet-phy@c {
> + #phy-cells = <1>;
> + compatible = "ethernet-phy-id2000.a231";
> + reg = <0xc>;
> + ti,rx-internal-delay = <0x8>;
> + ti,tx-internal-delay = <0xa>;
> + ti,fifo-depth = <0x1>;
> + ti,dp83867-rxctrl-strap-quirk;
> + reset-gpios = <&tca6416_u97 6 GPIO_ACTIVE_LOW>;
> + };
> };
> };
>
> diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-zcu106-revA.dts b/arch/arm64/boot/dts/xilinx/zynqmp-zcu106-revA.dts
> index 09773b7200f8..52cdec33f190 100644
> --- a/arch/arm64/boot/dts/xilinx/zynqmp-zcu106-revA.dts
> +++ b/arch/arm64/boot/dts/xilinx/zynqmp-zcu106-revA.dts
> @@ -2,7 +2,8 @@
> /*
> * dts file for Xilinx ZynqMP ZCU106
> *
> - * (C) Copyright 2016 - 2021, Xilinx, Inc.
> + * (C) Copyright 2016 - 2022, Xilinx, Inc.
> + * (C) Copyright 2022 - 2023, Advanced Micro Devices, Inc.
> *
> * Michal Simek <michal.simek@xilinx.com>
> */
> @@ -212,12 +213,19 @@ &gem3 {
> phy-mode = "rgmii-id";
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_gem3_default>;
> - phy0: ethernet-phy@c {
> - reg = <0xc>;
> - ti,rx-internal-delay = <0x8>;
> - ti,tx-internal-delay = <0xa>;
> - ti,fifo-depth = <0x1>;
> - ti,dp83867-rxctrl-strap-quirk;
> + mdio: mdio {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + phy0: ethernet-phy@c {
> + #phy-cells = <1>;
> + reg = <0xc>;
> + compatible = "ethernet-phy-id2000.a231";
> + ti,rx-internal-delay = <0x8>;
> + ti,tx-internal-delay = <0xa>;
> + ti,fifo-depth = <0x1>;
> + ti,dp83867-rxctrl-strap-quirk;
> + reset-gpios = <&tca6416_u97 6 GPIO_ACTIVE_LOW>;
> + };
> };
> };
>
> diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-zcu111-revA.dts b/arch/arm64/boot/dts/xilinx/zynqmp-zcu111-revA.dts
> index e0305dcbb010..699cc9ce7898 100644
> --- a/arch/arm64/boot/dts/xilinx/zynqmp-zcu111-revA.dts
> +++ b/arch/arm64/boot/dts/xilinx/zynqmp-zcu111-revA.dts
> @@ -2,7 +2,8 @@
> /*
> * dts file for Xilinx ZynqMP ZCU111
> *
> - * (C) Copyright 2017 - 2021, Xilinx, Inc.
> + * (C) Copyright 2017 - 2022, Xilinx, Inc.
> + * (C) Copyright 2022 - 2023, Advanced Micro Devices, Inc.
> *
> * Michal Simek <michal.simek@xilinx.com>
> */
> @@ -172,12 +173,19 @@ &gem3 {
> phy-mode = "rgmii-id";
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_gem3_default>;
> - phy0: ethernet-phy@c {
> - reg = <0xc>;
> - ti,rx-internal-delay = <0x8>;
> - ti,tx-internal-delay = <0xa>;
> - ti,fifo-depth = <0x1>;
> - ti,dp83867-rxctrl-strap-quirk;
> + mdio: mdio {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + phy0: ethernet-phy@c {
> + #phy-cells = <1>;
> + compatible = "ethernet-phy-id2000.a231";
> + reg = <0xc>;
> + ti,rx-internal-delay = <0x8>;
> + ti,tx-internal-delay = <0xa>;
> + ti,fifo-depth = <0x1>;
> + ti,dp83867-rxctrl-strap-quirk;
> + reset-gpios = <&tca6416_u22 6 GPIO_ACTIVE_LOW>;
> + };
> };
> };
>

--
Regards,

Laurent Pinchart