linux-kernel - Re: [PATCH v4 5/7] clk: Introduce davinci clocks

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Date:   Thu, 4 Jan 2018 11:47:07 -0600
From:   David Lechner <david@...hnology.com>
To:     Sekhar Nori <nsekhar@...com>, linux-arm-kernel@...ts.infradead.org
Cc:     Kevin Hilman <khilman@...nel.org>, Adam Ford <aford173@...il.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 5/7] clk: Introduce davinci clocks



On 1/4/18 6:43 AM, Sekhar Nori wrote:
> Hi David,
> 
> On Monday 01 January 2018 05:09 AM, David Lechner wrote:
>> +	/* TODO: old davinci clocks for da850 set MDCTL_FORCE bit for sata and
>> +	 * dsp here. Is this really needed?
>> +	 */
> 
> The commit that introduced this flag suggests so.
> 
> commit aad70de20fc69970a3080e7e8f02b54a4a3fe3e6
> Author:     Sekhar Nori <nsekhar@...com>
> AuthorDate: Wed Jul 6 06:01:22 2011 +0000
> Commit:     Sekhar Nori <nsekhar@...com>
> CommitDate: Fri Jul 8 11:10:09 2011 +0530
> 
>      davinci: enable forced transitions on PSC
> 
>      Some DaVinci modules like the SATA on DA850
>      need forced module state transitions.
> 
>      Define a "force" flag which can be passed to
>      the PSC config function to enable it to make
>      forced transitions.
> 
>      Forced transitions shouldn't normally be attempted,
>      unless the TRM explicitly specifies its usage.
> 
>      ChangeLog:
>      v2:
>      Modified to take care of the fact that
>      davinci_psc_config() now takes the flags
>      directly.
> 
>      Signed-off-by: Sekhar Nori <nsekhar@...com>
> 
> I can check without that flag again, but I do recall it being needed.
> 

OK, I will add it back. I need to add some other flags as well anyway.