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Message-ID: <85ec4b6e-e3eb-4a19-aec4-82865a940cbf@ti.com>
Date:   Mon, 20 Nov 2023 16:59:10 +0530
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Subject: Re: [PATCH] arm64: dts: ti: k3-am654-icssg2: Enable PHY interrupts
 for ICSSG2
Content-Language: en-US
To:     Siddharth Vadapalli <s-vadapalli@ti.com>, <nm@ti.com>,
        <vigneshr@ti.com>, <kristo@kernel.org>, <robh+dt@kernel.org>,
        <krzysztof.kozlowski+dt@linaro.org>, <conor+dt@kernel.org>
CC:     <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>, <r-gunasekaran@ti.com>,
        <srk@ti.com>
References: <20231120063159.539306-1-s-vadapalli@ti.com>
From:   MD Danish Anwar <danishanwar@ti.com>
In-Reply-To: <20231120063159.539306-1-s-vadapalli@ti.com>
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On 20/11/23 12:01 pm, Siddharth Vadapalli wrote:
> Enable interrupt mode of operation of the DP83867 Ethernet PHY which is
> used by ICSSG2. The DP83867 PHY driver already supports interrupt handling
> for interrupts generated by the PHY. Thus, add the necessary device-tree
> support to enable it.
> 
> Since the GPIO1_87 line is muxed with EXT_REFCLK1 and SYNC1_OUT, update
> the pinmux to select GPIO1_87 for routing the interrupt.
> 
> Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Reviewed-by: MD Danish Anwar <danishanwar@ti.com>

> ---
> 
> This patch is based on linux-next tagged next-20231120.
> 
> Regards,
> Siddharth.
> 
>  arch/arm64/boot/dts/ti/k3-am654-icssg2.dtso | 17 +++++++++++++++--
>  1 file changed, 15 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-am654-icssg2.dtso b/arch/arm64/boot/dts/ti/k3-am654-icssg2.dtso
> index ec8cf20ca3ac..9f723592d0f4 100644
> --- a/arch/arm64/boot/dts/ti/k3-am654-icssg2.dtso
> +++ b/arch/arm64/boot/dts/ti/k3-am654-icssg2.dtso
> @@ -124,21 +124,34 @@ AM65X_IOPAD(0x0088, PIN_INPUT, 2) /* (AG17) PRG2_PRU0_GPO4.PRG2_RGMII1_RX_CTL */
>  	};
>  };
>  
> +&main_pmx1 {
> +	/* Select GPIO1_87 for ICSSG2 PHY interrupt */
> +	icssg2_phy_irq_pins_default: icssg2-phy-irq-default-pins {
> +		pinctrl-single,pins = <
> +			AM65X_IOPAD(0x0014, PIN_INPUT, 7) /* (A22) EXT_REFCLK1.GPIO1_87 */
> +		>;
> +	};
> +};
> +
>  &icssg2_mdio {
>  	status = "okay";
> -	pinctrl-names = "default";
> -	pinctrl-0 = <&icssg2_mdio_pins_default>;
> +	pinctrl-names = "default", "icssg2-phy-irq";
> +	pinctrl-0 = <&icssg2_mdio_pins_default>, <&icssg2_phy_irq_pins_default>;
>  	#address-cells = <1>;
>  	#size-cells = <0>;
>  
>  	icssg2_phy0: ethernet-phy@0 {
>  		reg = <0>;
> +		interrupt-parent = <&main_gpio1>;
> +		interrupts = <87 0x2>;
>  		ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;
>  		ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
>  	};
>  
>  	icssg2_phy1: ethernet-phy@3 {
>  		reg = <3>;
> +		interrupt-parent = <&main_gpio1>;
> +		interrupts = <87 0x2>;
>  		ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;
>  		ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
>  	};

-- 
Thanks and Regards,
Danish