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

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Message-ID: <90b7a1b6-bc49-414d-9cde-e6fad46d2650@kwiboo.se>
Date: Mon, 23 Jun 2025 23:07:53 +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 19:40, Jonas Karlman wrote:
> 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).

Clarification:
Following boot1 parameter activates use of 1 GHz hrtimer, see [3].

This parameter was added to rkbin repo before all blobs was updated to
fully support use of the 1 ghz mode, and is the source for incompatible
blobs I referenced above.

  [BOOT1_PARAM]
  WORD_2=0x100

[3] https://github.com/rockchip-linux/rkbin/commit/cbbc6868221fb416d4f0d86a10e493dbbbc1f117

Regards,
Jonas

> 
> 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!
>>   
>>    
>