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: <0e86438b-14d8-4558-9f4f-a9170cb4bf83@kernel.org>
Date: Thu, 9 Jan 2025 18:22:29 +0200
From: Roger Quadros <rogerq@...nel.org>
To: "Vankar, Chintan" <c-vankar@...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>
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 09/01/2025 09:01, Vankar, Chintan wrote:
> 
> 
> 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.

OK. Thanks for the clarification.

> 
>>
>>>       };
>>>         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;
>>>           };
>>>         };
>>

-- 
cheers,
-roger