linux-kernel - Re: [PATCH v4 4/6] arm64: dts: ti: k3-j784s4: Add Main CPSW2G node

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Message-ID: <96e48198-6027-4f94-9a36-1c21560fdfc1@ti.com>
Date: Wed, 31 Jan 2024 09:41:37 -0600
From: Andrew Davis <afd@...com>
To: Chintan Vankar <c-vankar@...com>, Peter Rosin <peda@...ntia.se>,
        Greg
 Kroah-Hartman <gregkh@...uxfoundation.org>,
        Conor Dooley
	<conor+dt@...nel.org>,
        Krzysztof Kozlowski
	<krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>, Tero
 Kristo <kristo@...nel.org>,
        Vignesh Raghavendra <vigneshr@...com>, Nishanth
 Menon <nm@...com>
CC: <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <srk@...com>,
        <s-vadapalli@...com>, <r-gunasekaran@...com>, <danishanwar@...com>,
        Jayesh Choudhary
	<j-choudhary@...com>
Subject: Re: [PATCH v4 4/6] arm64: dts: ti: k3-j784s4: Add Main CPSW2G node

On 1/31/24 4:14 AM, Chintan Vankar wrote:
> From: Siddharth Vadapalli <s-vadapalli@...com>
> 
> Add the device-tree nodes for the Main CPSW2G instance and enable it.
> 
> Add alias for the Main CPSW2G port to enable Linux to fetch MAC Address
> for the port directly from U-Boot.
> 
> Signed-off-by: Siddharth Vadapalli <s-vadapalli@...com>
> Signed-off-by: Jayesh Choudhary <j-choudhary@...com>
> Signed-off-by: Chintan Vankar <c-vankar@...com>
> ---
>   arch/arm64/boot/dts/ti/k3-j784s4-evm.dts | 49 ++++++++++++++++++++++++
>   1 file changed, 49 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts b/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
> index b74f7d3025de..be028c246c67 100644
> --- a/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
> +++ b/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
> @@ -28,6 +28,7 @@ aliases {
>   		i2c0 = &wkup_i2c0;
>   		i2c3 = &main_i2c0;
>   		ethernet0 = &mcu_cpsw_port1;
> +		ethernet1 = &main_cpsw1_port1;
>   	};
>   
>   	memory@...00000 {
> @@ -280,6 +281,30 @@ &wkup_gpio0 {
>   
>   &main_pmx0 {
>   	bootph-all;
> +	main_cpsw2g_default_pins: main-cpsw2g-default-pins {
> +		pinctrl-single,pins = <
> +			J784S4_IOPAD(0x0b8, PIN_INPUT, 6) /* (AC34) MCASP1_ACLKX.RGMII1_RD0 */
> +			J784S4_IOPAD(0x0a0, PIN_INPUT, 6) /* (AD34) MCASP0_AXR12.RGMII1_RD1 */
> +			J784S4_IOPAD(0x0a4, PIN_INPUT, 6) /* (AJ36) MCASP0_AXR13.RGMII1_RD2 */
> +			J784S4_IOPAD(0x0a8, PIN_INPUT, 6) /* (AF34) MCASP0_AXR14.RGMII1_RD3 */
> +			J784S4_IOPAD(0x0b0, PIN_INPUT, 6) /* (AL33) MCASP1_AXR3.RGMII1_RXC */
> +			J784S4_IOPAD(0x0ac, PIN_INPUT, 6) /* (AE34) MCASP0_AXR15.RGMII1_RX_CTL */
> +			J784S4_IOPAD(0x08c, PIN_INPUT, 6) /* (AE35) MCASP0_AXR7.RGMII1_TD0 */
> +			J784S4_IOPAD(0x090, PIN_INPUT, 6) /* (AC35) MCASP0_AXR8.RGMII1_TD1 */
> +			J784S4_IOPAD(0x094, PIN_INPUT, 6) /* (AG35) MCASP0_AXR9.RGMII1_TD2 */
> +			J784S4_IOPAD(0x098, PIN_INPUT, 6) /* (AH36) MCASP0_AXR10.RGMII1_TD3 */
> +			J784S4_IOPAD(0x0b4, PIN_INPUT, 6) /* (AL34) MCASP1_AXR4.RGMII1_TXC */
> +			J784S4_IOPAD(0x09c, PIN_INPUT, 6) /* (AF35) MCASP0_AXR11.RGMII1_TX_CTL */
> +		>;
> +	};
> +
> +	main_cpsw2g_mdio_default_pins: main-cpsw2g-mdio-default-pins {
> +		pinctrl-single,pins = <
> +			J784S4_IOPAD(0x0c0, PIN_INPUT, 6) /* (AD38) MCASP1_AXR0.MDIO0_MDC */
> +			J784S4_IOPAD(0x0bc, PIN_INPUT, 6) /* (AD33) MCASP1_AFSX.MDIO0_MDIO */
> +		>;
> +	};
> +	
>   	main_uart8_pins_default: main-uart8-default-pins {
>   		bootph-all;
>   		pinctrl-single,pins = <
> @@ -809,6 +834,30 @@ &mcu_cpsw_port1 {
>   	phy-handle = <&mcu_phy0>;
>   };
>   
> +&main_cpsw1 {
> +	status = "okay";
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&main_cpsw2g_default_pins>;
> +};
> +
> +&main_cpsw1_mdio {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&main_cpsw2g_mdio_default_pins>;

If we need this pinmux info, why wasn't this node disabled? You disabled
the main_cpsw0_mdio instance, but not this one. Disable this by default
in the patch before this, then status = "okay" it here.

Andrew

> +
> +	main_cpsw1_phy0: ethernet-phy@0 {
> +		reg = <0>;
> +		ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;
> +		ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
> +		ti,min-output-impedance;
> +	};
> +};
> +
> +&main_cpsw1_port1 {
> +	status = "okay";
> +	phy-mode = "rgmii-rxid";
> +	phy-handle = <&main_cpsw1_phy0>;
> +};
> +
>   &mailbox0_cluster0 {
>   	status = "okay";
>   	interrupts = <436>;