linux-kernel - Re: [PATCH 1/4] arm64: dts: rockchip: list all CPU supplies on ArmSoM Sige5

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Message-ID: <dd1d0676-4eaa-4df7-b557-676b3de9a52e@kwiboo.se>
Date: Mon, 23 Jun 2025 19:40:11 +0200
From: Jonas Karlman <jonas@...boo.se>
To: Piotr Oniszczuk <piotr.oniszczuk@...il.com>,
 Alexey Charkov <alchark@...il.com>
Cc: Heiko Stuebner <heiko@...ech.de>,
 Nicolas Frattaroli <nicolas.frattaroli@...labora.com>,
 XiaoDong Huang <derrick.huang@...k-chips.com>, Rob Herring
 <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, devicetree@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] arm64: dts: rockchip: list all CPU supplies on ArmSoM
 Sige5

On 2025-06-23 17:02, Piotr Oniszczuk wrote:
> 
> 
>> Wiadomość napisana przez Alexey Charkov <alchark@...il.com> w dniu 23 cze 2025, o godz. 15:58:
>>
>> On Mon, Jun 23, 2025 at 1:19 PM Alexey Charkov <alchark@...il.com> wrote:
>>>
>>>
>>
>> Okay, I've bisected this.
>>
>> TLDR: Linux and u-boot seem to have nothing to do with it, opensource
>> TF-A doesn't work, binary BL31 starting with v1.09 do not work. BL31
>> v1.08 and earlier work fine.

v1.09 added support for 1 GHz hrtimer in addition to the normal 24 MHz
rate. Mainline U-Boot may only support use of 24 MHz hrtimer, unsure
what impact the hrtimer rate has. Mixing blobs with/without 1 GHz
support is known to cause issues. At one point the latest rkbin tree may
have contained incompatible rk3576 blobs (mixed 1 ghz vs 24 mhz rate).

Did you try with newer blobs, i.e. ddr init v1.09, bl31 v1.19 blobs [1]
and mainline U-Boot [2] ?

[1] https://github.com/radxa/rkbin/commits/develop-v2025.04/
[2] https://source.denx.de/u-boot/contributors/kwiboo/u-boot/-/commits/rk3576

Regards,
Jonas

> 
> 
> just fyi: 
> to confirm: replacing only bl31 to 1.08 makes all good
> with perf gov. clocks staying on 2200/2300
> clock estimations are predictable, constant and estimating constantly 2400
> ux is „like” on 3588
> 
> Alexey: many thx for finding root cause component!
>   
>