linux-kernel - Re: [PATCH 2/2] ARM: dts: imx6ul: Add imx6ul-tempmon

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Message-ID: <20170612153752.3b71516c@karo-electronics.de>
Date:   Mon, 12 Jun 2017 15:37:52 +0200
From:   Lothar Waßmann <LW@...O-electronics.de>
To:     Fabio Estevam <festevam@...il.com>
Cc:     Leonard Crestez <leonard.crestez@....com>,
        Bai Ping <ping.bai@....com>,
        "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Eduardo Valentin <edubezval@...il.com>,
        Sascha Hauer <kernel@...gutronix.de>,
        Fabio Estevam <fabio.estevam@....com>,
        Zhang Rui <rui.zhang@...el.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 2/2] ARM: dts: imx6ul: Add imx6ul-tempmon

Hi,

On Mon, 12 Jun 2017 10:22:45 -0300 Fabio Estevam wrote:
> On Mon, Jun 12, 2017 at 8:47 AM, Leonard Crestez
> <leonard.crestez@....com> wrote:
> 
> > However it seems that this might be accidental, it just happens that
> > the OCOTP clock starts as enabled and is only disabled later in the
> 
> Most likely because U-Boot enabled the OCOTP clock as it reads the
> speed grading fuse.
>
No, the imx6q_opp_check_speed_grading() runs on an i.MX6Q which, as
mentioned in my other mail <20170612124029.1643469d@...o-electronics.de>,
does not require any clock to be enabled for accessing the OCOTP regs.


Lothar Waßmann