linux-kernel - Re: [PATCH v2 2/2] arm64: dts: ti: k3-am62a7: Add overlay for second CPSW3G Port

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Message-ID: <468e0886-9b8f-40a7-a643-f20ca6e9b993@ti.com>
Date: Mon, 29 Apr 2024 12:02:04 +0530
From: Chintan Vankar <c-vankar@...com>
To: Ravi Gunasekaran <r-gunasekaran@...com>,
        Conor Dooley
	<conor+dt@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Rob Herring
	<robh@...nel.org>, Tero Kristo <kristo@...nel.org>,
        Vignesh Raghavendra
	<vigneshr@...com>, Nishanth Menon <nm@...com>,
        <s-vadapalli@...com>, <srk@...com>, <danishanwar@...com>
CC: <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v2 2/2] arm64: dts: ti: k3-am62a7: Add overlay for second
 CPSW3G Port



On 29/04/24 10:54, Ravi Gunasekaran wrote:
> 
> 
> On 4/25/24 3:50 PM, Chintan Vankar wrote:
>> From: Siddharth Vadapalli <s-vadapalli@...com>
>>
>> The SK-Ethernet-DC01 Add-On Ethernet Card for AM62A7-SK board supports
>> RGMII mode.
>>
>> Add overlay to enable the second CPSW3G port in RGMII-RXID mode with the
>> Add-On Ethernet Card.
>>
>> Signed-off-by: Siddharth Vadapalli <s-vadapalli@...com>
>> Signed-off-by: Chintan Vankar <c-vankar@...com>
>> ---
>>
>> Link to v1:
>> https://lore.kernel.org/r/20230424111945.3865240-3-s-vadapalli@ti.com/
>>
>> Changes from v1 to v2:
>> - Since support for device tree overlays for am62a7-sk is already enabled
>>    by commit "635ed9715194", it is removed from this series.
>>
>>   arch/arm64/boot/dts/ti/Makefile               |  3 +
>>   .../dts/ti/k3-am62a7-sk-ethernet-dc01.dtso    | 61 +++++++++++++++++++
>>   2 files changed, 64 insertions(+)
>>   create mode 100644 arch/arm64/boot/dts/ti/k3-am62a7-sk-ethernet-dc01.dtso
>>
>> diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
>> index c76b41f86527..8c55e46d9f98 100644
>> --- a/arch/arm64/boot/dts/ti/Makefile
>> +++ b/arch/arm64/boot/dts/ti/Makefile
>> @@ -27,6 +27,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am62-lp-sk.dtb
>>   
>>   # Boards with AM62Ax SoC
>>   dtb-$(CONFIG_ARCH_K3) += k3-am62a7-sk.dtb
>> +dtb-$(CONFIG_ARCH_K3) += k3-am62a7-sk-ethernet-dc01.dtbo
>>   
>>   # Boards with AM62Px SoC
>>   dtb-$(CONFIG_ARCH_K3) += k3-am62p5-sk.dtb
>> @@ -123,6 +124,8 @@ k3-am62a7-sk-csi2-ov5640-dtbs := k3-am62a7-sk.dtb \
>>   	k3-am62x-sk-csi2-ov5640.dtbo
>>   k3-am62a7-sk-csi2-tevi-ov5640-dtbs := k3-am62a7-sk.dtb \
>>   	k3-am62x-sk-csi2-tevi-ov5640.dtbo
>> +k3-am62a7-sk-ethernet-dc01-dtbs := k3-am62a7-sk.dtb \
>> +	k3-am62a7-sk-ethernet-dc01.dtbo
>>   k3-am62a7-sk-hdmi-audio-dtbs := k3-am62a7-sk.dtb k3-am62x-sk-hdmi-audio.dtbo
>>   k3-am62p5-sk-csi2-imx219-dtbs := k3-am62p5-sk.dtb \
>>   	k3-am62x-sk-csi2-imx219.dtbo
>> diff --git a/arch/arm64/boot/dts/ti/k3-am62a7-sk-ethernet-dc01.dtso b/arch/arm64/boot/dts/ti/k3-am62a7-sk-ethernet-dc01.dtso
>> new file mode 100644
>> index 000000000000..f6d5a089a717
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/ti/k3-am62a7-sk-ethernet-dc01.dtso
>> @@ -0,0 +1,61 @@
>> +// SPDX-License-Identifier: GPL-2.0
> 
> Please update the license to "GPL-2.0-only OR MIT"
> 

I will update it in next version.

>> +/**
>> + * DT Overlay for second CPSW3G port in RGMII mode using SK-ETHERNET-DC01
>> + * Add-On Daughtercard with AM62A7-SK.
>> + *
>> + * Copyright (C) 2024 Texas Instruments Incorporated - https://www.ti.com/
>> + */
>> +
>> +/dts-v1/;
>> +/plugin/;
>> +
>> +#include <dt-bindings/gpio/gpio.h>
>> +#include <dt-bindings/net/ti-dp83867.h>
>> +#include "k3-pinctrl.h"
>> +
>> +&{/} {
>> +	aliases {
>> +		ethernet1 = "/bus@...00/ethernet@...0000/ethernet-ports/port@2";
>> +	};
>> +};
>> +
>> +&cpsw3g {
>> +	pinctrl-0 = <&main_rgmii1_pins_default>, <&main_rgmii2_pins_default>;
> 
> 
> One entry per line like below
> 
> pinctrl-0 = <&main_rgmii1_pins_default>,
> 	    <&main_rgmii2_pins_default>;
> 

Thanks Ravi for pointing out this, I will update this in next
version.

>> +};
>> +
>> +&cpsw_port2 {
>> +	status = "okay";
>> +	phy-mode = "rgmii-rxid";
>> +	phy-handle = <&cpsw3g_phy1>;
>> +};
>> +
>> +&cpsw3g_mdio {
>> +	#address-cells = <1>;
>> +	#size-cells = <0>;
>> +
>> +	cpsw3g_phy1: ethernet-phy@1 {
>> +		reg = <1>;
>> +		ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;
>> +		ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
>> +		ti,min-output-impedance;
>> +	};
>> +};
>> +
>> +&main_pmx0 {
>> +	main_rgmii2_pins_default: main-rgmii2-default-pins {
>> +		pinctrl-single,pins = <
>> +			AM62AX_IOPAD(0x0184, PIN_INPUT, 0) /* (AA21) RGMII2_RD0 */
>> +			AM62AX_IOPAD(0x0188, PIN_INPUT, 0) /* (Y20) RGMII2_RD1 */
>> +			AM62AX_IOPAD(0x018c, PIN_INPUT, 0) /* (AB21) RGMII2_RD2 */
>> +			AM62AX_IOPAD(0x0190, PIN_INPUT, 0) /* (AB20) RGMII2_RD3 */
>> +			AM62AX_IOPAD(0x0180, PIN_INPUT, 0) /* (AA20) RGMII2_RXC */
>> +			AM62AX_IOPAD(0x017c, PIN_INPUT, 0) /* (W18) RGMII2_RX_CTL */
>> +			AM62AX_IOPAD(0x016c, PIN_INPUT, 0) /* (AA19) RGMII2_TD0 */
>> +			AM62AX_IOPAD(0x0170, PIN_INPUT, 0) /* (Y18) RGMII2_TD1 */
>> +			AM62AX_IOPAD(0x0174, PIN_INPUT, 0) /* (AA18) RGMII2_TD2 */
>> +			AM62AX_IOPAD(0x0178, PIN_INPUT, 0) /* (W17) RGMII2_TD3 */
>> +			AM62AX_IOPAD(0x0168, PIN_INPUT, 0) /* (AB19) RGMII2_TXC */
>> +			AM62AX_IOPAD(0x0164, PIN_INPUT, 0) /* (Y19) RGMII2_TX_CTL */
>> +		>;
>> +	};
>> +};
>