linux-kernel - Re: [PATCH 1/2] arm64: dts: ti: k3-am68-sk*: Add bootph-all property to necessary nodes to enable Ethernet boot

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Message-ID: <05c79a3d-e185-453a-9071-4e830d0dae6b@ti.com>
Date: Thu, 9 Jan 2025 12:31:12 +0530
From: "Vankar, Chintan" <c-vankar@...com>
To: Roger Quadros <rogerq@...nel.org>, 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>
CC: <srk@...com>, <s-vadapalli@...com>, <danishanwar@...com>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 1/2] arm64: dts: ti: k3-am68-sk*: Add bootph-all property
 to necessary nodes to enable Ethernet boot



On 1/7/2025 7:34 PM, Roger Quadros wrote:
> 
> 
> On 06/01/2025 14:31, Chintan Vankar wrote:
>> Ethernet boot requires CPSW nodes to be present starting from R5 SPL
>> stage. Add bootph-all property to necessary nodes for CPSW to enable those
>> nodes during SPL stage along with later boot stages for AM68-SK.
>>
>> Signed-off-by: Chintan Vankar <c-vankar@...com>
>> ---
>>   arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts | 5 +++++
>>   arch/arm64/boot/dts/ti/k3-j721s2-mcu-wakeup.dtsi | 2 ++
>>   2 files changed, 7 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts b/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts
>> index 11522b36e0ce..f1f8b228926d 100644
>> --- a/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts
>> +++ b/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts
>> @@ -333,6 +333,7 @@ J721S2_WKUP_IOPAD(0x008, PIN_OUTPUT, 0) /* (E22) MCU_RGMII1_TD3 */
>>   			J721S2_WKUP_IOPAD(0x018, PIN_OUTPUT, 0) /* (F21) MCU_RGMII1_TXC */
>>   			J721S2_WKUP_IOPAD(0x000, PIN_OUTPUT, 0) /* (F22) MCU_RGMII1_TX_CTL */
>>   		>;
>> +		bootph-all;
> 
> Shouldn't bootph-all be the first property in the DT nodes?

Hello Roger, You are correct that we used to add 'bootph-all' property
as the first property in DT nodes, but after seeing this comment of
Vignesh at here:
https://lore.kernel.org/r/79bc9fe7-0a35-4f07-b34e-367a4b1e1755@ti.com/,
I have moved it to the end of all required property.

> 
>>   	};
>>   
>>   	mcu_mdio_pins_default: mcu-mdio-default-pins {
>> @@ -340,6 +341,7 @@ mcu_mdio_pins_default: mcu-mdio-default-pins {
>>   			J721S2_WKUP_IOPAD(0x034, PIN_OUTPUT, 0) /* (A21) MCU_MDIO0_MDC */
>>   			J721S2_WKUP_IOPAD(0x030, PIN_INPUT, 0) /* (A22) MCU_MDIO0_MDIO */
>>   		>;
>> +		bootph-all;
>>   	};
>>   
>>   	mcu_mcan0_pins_default: mcu-mcan0-default-pins {
>> @@ -610,11 +612,13 @@ &main_sdhci1 {
>>   &mcu_cpsw {
>>   	pinctrl-names = "default";
>>   	pinctrl-0 = <&mcu_cpsw_pins_default>, <&mcu_mdio_pins_default>;
>> +	bootph-all;
>>   };
>>   
>>   &davinci_mdio {
>>   	phy0: ethernet-phy@0 {
>>   		reg = <0>;
>> +		bootph-all;
>>   		ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;
>>   		ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
>>   		ti,min-output-impedance;
>> @@ -624,6 +628,7 @@ phy0: ethernet-phy@0 {
>>   &cpsw_port1 {
>>   	phy-mode = "rgmii-rxid";
>>   	phy-handle = <&phy0>;
>> +	bootph-all;
>>   };
>>   
>>   &mcu_mcan0 {
>> diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-mcu-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-j721s2-mcu-wakeup.dtsi
>> index bc31266126d0..cfae226d3c63 100644
>> --- a/arch/arm64/boot/dts/ti/k3-j721s2-mcu-wakeup.dtsi
>> +++ b/arch/arm64/boot/dts/ti/k3-j721s2-mcu-wakeup.dtsi
>> @@ -154,12 +154,14 @@ mcu_conf: bus@...00000 {
>>   		cpsw_mac_syscon: ethernet-mac-syscon@200 {
>>   			compatible = "ti,am62p-cpsw-mac-efuse", "syscon";
>>   			reg = <0x200 0x8>;
>> +			bootph-all;
>>   		};
>>   
>>   		phy_gmii_sel: phy@...0 {
>>   			compatible = "ti,am654-phy-gmii-sel";
>>   			reg = <0x4040 0x4>;
>>   			#phy-cells = <1>;
>> +			bootph-all;
>>   		};
>>   
>>   	};
>