linux-kernel - Re: [PATCH v4 8/8] arm64: dts: renesas: r9a08g045: Update #power-domain-cells = <1>

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Message-ID: <e55dab68-fccc-4239-8368-94f942a50218@tuxon.dev>
Date: Wed, 11 Dec 2024 12:58:32 +0200
From: Claudiu Beznea <claudiu.beznea@...on.dev>
To: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: mturquette@...libre.com, robh@...nel.org, krzk+dt@...nel.org,
 conor+dt@...nel.org, magnus.damm@...il.com, ulf.hansson@...aro.org,
 linux-renesas-soc@...r.kernel.org, linux-clk@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-pm@...r.kernel.org, Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
Subject: Re: [PATCH v4 8/8] arm64: dts: renesas: r9a08g045: Update
 #power-domain-cells = <1>



On 11.12.2024 12:50, Claudiu Beznea wrote:
> Hi, Geert,
> 
> On 11.12.2024 12:31, Geert Uytterhoeven wrote:
>> Hi Claudiu,
>>
>> On Thu, Aug 1, 2024 at 7:34 PM Geert Uytterhoeven <geert@...ux-m68k.org> wrote:
>>> On Thu, Aug 1, 2024 at 7:28 PM claudiu beznea <claudiu.beznea@...on.dev> wrote:
>>>> On 01.08.2024 19:13, Geert Uytterhoeven wrote:
>>>>> On Mon, Apr 22, 2024 at 12:54 PM Claudiu <claudiu.beznea@...on.dev> wrote:
>>>>>> From: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
>>>>>>
>>>>>> Update CPG #power-domain-cells = <1> and move all the IPs to be part of the
>>>>>> IP specific power domain as the driver has been modified to support
>>>>>> multiple power domains.
>>>>>>
>>>>>> Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>
>>>>>> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
>>>>>
>>>>> Now the watchdog fixes are in v6.11-rc1, I will queue this in
>>>>> renesas-devel for v6.12.
>>>>
>>>> Only the RZ/G3S support has been merged.
>>>>
>>>> The watchdog fixes that allows us to use this patch were submitted as RFC
>>>> but got no input from Ulf, yet.
>>>
>>> Oops, postponing.
>>
>> The watchdog fix is now commit bad201b2ac4e238c ("watchdog: rzg2l_wdt:
>> Power on the watchdog domain in the restart handler") in v6.13-rc2,
>> so it is time to revisit this (and rebase my renesas-dts-for-v6.1
>> branch to v6.13-rc2)?
> 
> In the meantime, we got some input from HW team that particular order might
> need to be followed b/w MSTOP and CPG setup that doesn't align with having

s/CPG/CPG_CLKON_<IP>.CLKx_ON

> MSTOP handled through power domains. There are some contradictions (AFAICT)
> b/w that and the conclusions that one might draw from the HW manual, so we
> are in the process of clarifying.
> 
> For that I would propose to postpone it until further clarifications.
> 
> Thank you,
> Claudiu
> 
>>
>> Thanks!
>>
>> Gr{oetje,eeting}s,
>>
>>                         Geert
>>