linux-kernel - Re: [PATCH v5 1/7] arm64: dts: ti: am62p: Rename am62p-{}.dtsi to am62p-j722s-common-{}.dtsi

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Message-ID: <975c90b1-6657-40c6-a336-7f1f58acf531@ti.com>
Date: Tue, 11 Jun 2024 14:24:55 +0530
From: Siddharth Vadapalli <s-vadapalli@...com>
To: Roger Quadros <rogerq@...nel.org>
CC: Siddharth Vadapalli <s-vadapalli@...com>, <nm@...com>, <vigneshr@...com>,
        <afd@...com>, <kristo@...nel.org>, <robh@...nel.org>,
        <krzk+dt@...nel.org>, <conor+dt@...nel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <u-kumar1@...com>,
        <danishanwar@...com>, <srk@...com>
Subject: Re: [PATCH v5 1/7] arm64: dts: ti: am62p: Rename am62p-{}.dtsi to
 am62p-j722s-common-{}.dtsi

On Mon, Jun 10, 2024 at 10:31:07PM +0300, Roger Quadros wrote:

[...]

> > Based on your suggestion, you seem to propose the following hierarchy:
> > k3-am62p-{main,mcu,thermal,wakeup}.dtsi = AM62P specific data
> > k3-am62p.dtsi = k3-am62p-j722s-common-main.dtsi +
> > 		k3-am62p-j722s-common-mcu.dtsi +
> > 		k3-am62p-j722s-common-wakeup.dtsi +
> > 		k3-am62p-j722s-common-thermal.dtsi +
> > 		k3-am62p-{main,mcu,thermal,wakeup}.dtsi +
> > 		<delta-5>
> > k3-am62p5.dtsi = k3-am62p.dtsi + <delta-2>
> > k3-j722s-{main,mcu,thermal,wakeup}.dtsi = J722S specific data
> > k3-j722s.dtsi = k3-am62p-j722s-common-main.dtsi +
> > 		k3-am62p-j722s-common-mcu.dtsi +
> > 		k3-am62p-j722s-common-wakeup.dtsi +
> > 		k3-am62p-j722s-common-thermal.dtsi +
> > 		k3-j722s-{main,mcu,thermal,wakeup}.dtsi +
> > 		<delta-6>
> 
> What is the equivalent of k3-am62p5.dtsi here?
> That should contain k3-j722s.dtsi + CPU and OPP stuff.
> 
> I suppose it should be named specific to the SoC variant part number?

AM62P (https://www.ti.com/product/AM62P) has two variants:
1. 2 Arm Cortex-A53 => AM62P3
2. 4 Arm Cortex-A53 => AM62P5
Both variants will share the common k3-am62p.dtsi

J722S (https://www.ti.com/product/TDA4VEN-Q1) has only one variant:
4 Arm Cortex-A53 => J722S
Which is currently identical to AM62P5 w.r.t. the number of A53s.

So there isn't an equivalent of AM62P5/k3-am62p5.dtsi for J722S.
k3-j722s.dtsi is a combination of k3-am62p.dtsi and k3-am62p5.dtsi.

Regards,
Siddharth.