linux-kernel - Re: [PATCH] arm64: dts: ti: k3-am642-evm-icssg1-dualemac: add overlay for mii mode

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Date: Mon, 29 Apr 2024 11:28:29 +0530
From: Ravi Gunasekaran <r-gunasekaran@...com>
To: MD Danish Anwar <danishanwar@...com>,
        Vignesh Raghavendra
	<vigneshr@...com>, Nishanth Menon <nm@...com>
CC: Conor Dooley <conor+dt@...nel.org>,
        Krzysztof Kozlowski
	<krzk+dt@...nel.org>,
        Rob Herring <robh@...nel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
        Tero Kristo <kristo@...nel.org>, <srk@...com>,
        Roger Quadros <rogerq@...nel.org>,
        Ravi Gunasekaran
	<r-gunasekaran@...com>
Subject: Re: [PATCH] arm64: dts: ti: k3-am642-evm-icssg1-dualemac: add overlay
 for mii mode



On 4/23/24 2:30 PM, MD Danish Anwar wrote:
> Add device tree overlay to enable both ICSSG1 ports available on AM64x-EVM
> in MII mode.
> 
> Signed-off-by: MD Danish Anwar <danishanwar@...com>
> ---
> NOTE: This patch depends on [1]. Without [1] mii mode will not work for
> ICSSG. Patch [1] is currently posted to net subsystem.
> 
> This patch is based on next-20240423 linux-next tag.
> 
> [1] https://lore.kernel.org/all/20240423084828.1309294-1-danishanwar@ti.com/
> 
>  arch/arm64/boot/dts/ti/Makefile               |   4 +
>  .../ti/k3-am642-evm-icssg1-dualemac-mii.dtso  | 101 ++++++++++++++++++
>  2 files changed, 105 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/ti/k3-am642-evm-icssg1-dualemac-mii.dtso
> 

[...]

> diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm-icssg1-dualemac-mii.dtso b/arch/arm64/boot/dts/ti/k3-am642-evm-icssg1-dualemac-mii.dtso
> new file mode 100644
> index 000000000000..3081b5c64886
> --- /dev/null
> +++ b/arch/arm64/boot/dts/ti/k3-am642-evm-icssg1-dualemac-mii.dtso
> @@ -0,0 +1,101 @@
> +// SPDX-License-Identifier: GPL-2.0

Please update the license to "GPL-2.0-only OR MIT"

> +/**
> + * DT overlay for enabling both ICSSG1 port on AM642 EVM in MII mode
> + *
> + * Copyright (C) 2020-2024 Texas Instruments Incorporated - https://www.ti.com/
> + */
> +
> +/dts-v1/;
> +/plugin/;
> +#include <dt-bindings/gpio/gpio.h>
> +#include "k3-pinctrl.h"
> +
> +&{/} {
> +	aliases {
> +		ethernet1 = "/icssg1-eth/ethernet-ports/port@1";
> +	};
> +
> +	mdio-mux-2 {
> +		compatible = "mdio-mux-multiplexer";
> +		mux-controls = <&mdio_mux>;
> +		mdio-parent-bus = <&icssg1_mdio>;
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		mdio@0 {
> +			reg = <0x0>;
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +
> +			icssg1_phy2: ethernet-phy@3 {
> +				reg = <3>;
> +			};
> +		};
> +	};
> +};
> +
> +&main_pmx0 {
> +	icssg1_mii1_pins_default: icssg1-mii1-default-pins {
> +		pinctrl-single,pins = <
> +			AM64X_IOPAD(0x00f8, PIN_INPUT, 1) /* (V9) PRG1_PRU0_GPO16.PR1_MII_MT0_CLK */
> +			AM64X_IOPAD(0x00f4, PIN_OUTPUT, 0) /* (Y9) PRG1_PRU0_GPO15.PR1_MII0_TXEN */
> +			AM64X_IOPAD(0x00f0, PIN_OUTPUT, 0) /* (AA9) PRG1_PRU0_GPO14.PR1_MII0_TXD3 */
> +			AM64X_IOPAD(0x00ec, PIN_OUTPUT, 0) /* (W9) PRG1_PRU0_GPO13.PR1_MII0_TXD2 */
> +			AM64X_IOPAD(0x00e8, PIN_OUTPUT, 0) /* (U9) PRG1_PRU0_GPO12.PR1_MII0_TXD1 */
> +			AM64X_IOPAD(0x00e4, PIN_OUTPUT, 0) /* (AA8) PRG1_PRU0_GPO11.PR1_MII0_TXD0 */
> +			AM64X_IOPAD(0x00c8, PIN_INPUT, 1) /* (Y8) PRG1_PRU0_GPO4.PR1_MII0_RXDV */
> +			AM64X_IOPAD(0x00d0, PIN_INPUT, 1) /* (AA7) PRG1_PRU0_GPO6.PR1_MII_MR0_CLK */
> +			AM64X_IOPAD(0x00c4, PIN_INPUT, 1) /* (V8) PRG1_PRU0_GPO3.PR1_MII0_RXD3 */
> +			AM64X_IOPAD(0x00c0, PIN_INPUT, 1) /* (W8) PRG1_PRU0_GPO2.PR1_MII0_RXD2 */
> +			AM64X_IOPAD(0x00cc, PIN_INPUT, 1) /* (V13) PRG1_PRU0_GPO5.PR1_MII0_RXER */
> +			AM64X_IOPAD(0x00bc, PIN_INPUT, 1) /* (U8) PRG1_PRU0_GPO1.PR1_MII0_RXD1 */
> +			AM64X_IOPAD(0x00b8, PIN_INPUT, 1) /* (Y7) PRG1_PRU0_GPO0.PR1_MII0_RXD0 */
> +			AM64X_IOPAD(0x00d8, PIN_INPUT, 1) /* (W13) PRG1_PRU0_GPO8.PR1_MII0_RXLINK */
> +		>;
> +	};
> +
> +	icssg1_mii2_pins_default: icssg1-mii2-default-pins {
> +		pinctrl-single,pins = <
> +			AM64X_IOPAD(0x0148, PIN_INPUT, 1) /* (Y10) PRG1_PRU1_GPO16.PR1_MII_MT1_CLK */
> +			AM64X_IOPAD(0x0144, PIN_OUTPUT, 0) /* (Y11) PRG1_PRU1_GPO15.PR1_MII1_TXEN */
> +			AM64X_IOPAD(0x0140, PIN_OUTPUT, 0) /* (AA11) PRG1_PRU1_GPO14.PR1_MII1_TXD3 */
> +			AM64X_IOPAD(0x013c, PIN_OUTPUT, 0) /* (U10) PRG1_PRU1_GPO13.PR1_MII1_TXD2 */
> +			AM64X_IOPAD(0x0138, PIN_OUTPUT, 0) /* (V10) PRG1_PRU1_GPO12.PR1_MII1_TXD1 */
> +			AM64X_IOPAD(0x0134, PIN_OUTPUT, 0) /* (AA10) PRG1_PRU1_GPO11.PR1_MII1_TXD0 */
> +			AM64X_IOPAD(0x0118, PIN_INPUT, 1) /* (W12) PRG1_PRU1_GPO4.PR1_MII1_RXDV */
> +			AM64X_IOPAD(0x0120, PIN_INPUT, 1) /* (U11) PRG1_PRU1_GPO6.PR1_MII_MR1_CLK */
> +			AM64X_IOPAD(0x0114, PIN_INPUT, 1) /* (Y12) PRG1_PRU1_GPO3.PR1_MII1_RXD3 */
> +			AM64X_IOPAD(0x0110, PIN_INPUT, 1) /* (AA12) PRG1_PRU1_GPO2.PR1_MII1_RXD2 */
> +			AM64X_IOPAD(0x011c, PIN_INPUT, 1) /* (AA13) PRG1_PRU1_GPO5.PR1_MII1_RXER */
> +			AM64X_IOPAD(0x010c, PIN_INPUT, 1) /* (V11) PRG1_PRU1_GPO1.PR1_MII1_RXD1 */
> +			AM64X_IOPAD(0x0108, PIN_INPUT, 1) /* (W11) PRG1_PRU1_GPO0.PR1_MII1_RXD0 */
> +			AM64X_IOPAD(0x0128, PIN_INPUT, 1) /* (U12) PRG1_PRU1_GPO8.PR1_MII1_RXLINK */
> +		>;
> +	};
> +};
> +
> +&cpsw3g {
> +	pinctrl-0 = <&rgmii1_pins_default>;
> +};
> +
> +&cpsw_port2 {
> +	status = "disabled";
> +};
> +
> +&mdio_mux_1 {
> +	status = "disabled";
> +};
> +
> +&icssg1_eth {
> +	pinctrl-0 = <&icssg1_mii1_pins_default &icssg1_mii2_pins_default>;
> +};
> +
> +&icssg1_emac0 {
> +	phy-mode = "mii";
> +};
> +
> +&icssg1_emac1 {
> +	status = "okay";
> +	phy-handle = <&icssg1_phy2>;
> +	phy-mode = "mii";
> +};

-- 
Regards,
Ravi