linux-kernel - Re: [PATCH 3/3] arm64: dts: rk3399: Add init voltage for vdd

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Message-ID: <c5519934-2715-d5cd-a236-0fec9a41dc67@fivetechno.de>
Date:   Tue, 12 Nov 2019 09:51:52 +0100
From:   Markus Reichl <m.reichl@...etechno.de>
To:     Sören Moch <smoch@....de>,
        Kever Yang <kever.yang@...k-chips.com>, heiko@...ech.de
Cc:     Mark Rutland <mark.rutland@....com>,
        Andrius Štikonas <andrius@...konas.eu>,
        linux-kernel@...r.kernel.org, Alexis Ballier <aballier@...too.org>,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        Katsuhiro Suzuki <katsuhiro@...suster.net>,
        Hugh Cole-Baker <sigmaris@...il.com>,
        Elaine Zhang <zhangqing@...k-chips.com>,
        Andy Yan <andyshrk@...il.com>,
        Robin Murphy <robin.murphy@....com>,
        Vicente Bergas <vicencb@...il.com>,
        Oskari Lemmela <oskari@...mela.net>,
        linux-rockchip@...ts.infradead.org,
        Rob Herring <robh+dt@...nel.org>,
        Pragnesh Patel <Pragnesh_Patel@...tor.com>,
        Peter Robinson <pbrobinson@...il.com>,
        Nick Xie <nick@...das.com>,
        Ezequiel Garcia <ezequiel@...labora.com>,
        Vivek Unune <npcomplete13@...il.com>,
        Akash Gajjar <akash@...nedev.com>
Subject: Re: [PATCH 3/3] arm64: dts: rk3399: Add init voltage for vdd_log

Thanks Sören,

Am 12.11.19 um 09:44 schrieb Sören Moch:
> On 12.11.19 09:16, Markus Reichl wrote:
>> Hi Kever,
>>
>> have a rk3399-roc-pc running mainline U-Boot and kernel and vdd_log is
>> showing 1118 mV.
>> Is this a danger for the board?
> I think yes. What I read vdd_log on rk3399 must not exceed 1.0V.
>> How to fix it?
> You probably need to do something like [1].

will measure and come up with a patch.

> 
> [1] https://patchwork.kernel.org/patch/11173465/
> 
> Gruß,
> Sören
>> Btw. vin-supply for this pwm-regulator is ignored and I could not find it
>> in bindings doc.
>>
> Gruß,
-- 
Markus Reichl