linux-kernel - Re: [PATCH] arm64: dts: ti: k3-am642-tqma64xxl: add boot phase tags

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Message-ID: <3c131320-7be9-4223-b3c2-11beb435abd5@ti.com>
Date: Thu, 23 Oct 2025 13:39:16 +0530
From: Vignesh Raghavendra <vigneshr@...com>
To: Matthias Schiffer <matthias.schiffer@...tq-group.com>,
        Nishanth Menon
	<nm@...com>, Tero Kristo <kristo@...nel.org>
CC: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux@...tq-group.com>
Subject: Re: [PATCH] arm64: dts: ti: k3-am642-tqma64xxl: add boot phase tags

Hi Matthias,

On 06/10/25 15:20, Matthias Schiffer wrote:
> Similar to other AM64x-based boards, add boot phase tags to make the
> Device Trees usable for firmware/bootloaders without modification.
> 
> Supported boot devices are eMMC/SD card, SPI-NOR and USB (both mass
> storage and DFU). The I2C EEPROM is included to allow the firmware to
> select the correct RAM configuration for different TQMa64xxL variants.
> 
> Signed-off-by: Matthias Schiffer <matthias.schiffer@...tq-group.com>
> ---
>  .../dts/ti/k3-am642-tqma64xxl-mbax4xxl.dts     | 18 ++++++++++++++++++
>  arch/arm64/boot/dts/ti/k3-am642-tqma64xxl.dtsi | 12 ++++++++++++
>  2 files changed, 30 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-am642-tqma64xxl-mbax4xxl.dts b/arch/arm64/boot/dts/ti/k3-am642-tqma64xxl-mbax4xxl.dts
> index 8f64d6272b1ba..81e9e047281fd 100644
> --- a/arch/arm64/boot/dts/ti/k3-am642-tqma64xxl-mbax4xxl.dts
> +++ b/arch/arm64/boot/dts/ti/k3-am642-tqma64xxl-mbax4xxl.dts
> @@ -167,6 +167,7 @@ reg_pwm_fan: regulator-pwm-fan {
>  	};
>  
>  	reg_sd: regulator-sd {
> +		bootph-all;

Here and elsewhere:

Per [1] boot-phase tags would need to go just after all the std/common
properties and just before vendor properties

[1] https://docs.kernel.org/devicetree/bindings/dts-coding-style.html

>  		compatible = "regulator-fixed";
>  		pinctrl-names = "default";
>  		pinctrl-0 = <&main_mmc1_reg_pins>;
> @@ -245,6 +246,7 @@ icssg1_phy0c: ethernet-phy@c {
>  
>  
>  &main_gpio0 {
> +	bootph-all;
>  	pinctrl-names = "default";
>  	pinctrl-0 = <&main_gpio0_digital_pins>,
>  		    <&main_gpio0_hog_pins>;
> @@ -263,6 +265,7 @@ &main_gpio0 {
>  };

 [...]
-- 
Regards
Vignesh
https://ti.com/opensource