linux-kernel - Re: [PATCH 2/3] arm64: dts: ti: k3-j784s4-mcu-wakeup: Add bootph-pre-ram property for SPL nodes

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Message-ID: <20230807172132.7e4qux3f72zyfd33@mocker>
Date:   Mon, 7 Aug 2023 12:21:32 -0500
From:   Nishanth Menon <nm@...com>
To:     Apurva Nandan <a-nandan@...com>
CC:     "Kumar, Udit" <u-kumar1@...com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Tero Kristo <kristo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Hari Nagalla <hnagalla@...com>
Subject: Re: [PATCH 2/3] arm64: dts: ti: k3-j784s4-mcu-wakeup: Add
 bootph-pre-ram property for SPL nodes

On 22:43-20230807, Apurva Nandan wrote:
[..]

> > mcu_timer0: timer@...00000 should be part of your list.
> Maybe you are referring to mcu_timer1. mcu_timer1 will be a part of
> u-boot.dtsi as we need to edit
> the node for removing k3_clks and power-domains properties from it. So we
> should add bootph-pre-ram
> there itself in uboot.dtsi as the node will be already there.

a) you need the timer even before talking to anything - u-boot needs it
for basic delay - so add the pre-ram property.
b) what you are doing in u-boot currently a hack - am625 in u-boot got
it fixed the right way - follow the model then you dont need the hackery
with deleting clock and power-domains properties.

-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D