From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Wolfram Sang <wsa+renesas@sang-engineering.com>
Cc: Ulf Hansson <ulf.hansson@linaro.org>,
"linux-mmc@vger.kernel.org" <linux-mmc@vger.kernel.org>,
Masahiro Yamada <yamada.masahiro@socionext.com>,
Ulrich Hecht <uli+renesas@fpond.eu>,
Simon Horman <horms+renesas@verge.net.au>,
Niklas Soderlund <niklas.soderlund@ragnatech.se>
Subject: Re: [PATCH 2/2] mmc: tmio: Make sure the PM domain is 'started' while probing
Date: Tue, 19 May 2020 10:53:28 +0200 [thread overview]
Message-ID: <CAMuHMdXVj_A20S+69Yr9nvL5mWsDTi=BuHNcsy-qNwmfb5S46Q@mail.gmail.com> (raw)
In-Reply-To: <20200519084653.GF1094@ninjato>
Hi Wolfram,
On Tue, May 19, 2020 at 10:46 AM Wolfram Sang
<wsa+renesas@sang-engineering.com> wrote:
> > > Can't we put it before the custom clk_enable()? And then clean up
> > > further like this to have the main clock only controlled via RPM?
> >
> > I understand what you want to achieve, but to allow that to work we
> > need to consider the below things first.
> >
> > 1. If the driver is built with CONFIG_PM unset, then runtime PM
> > doesn't work and hence the clock won't be managed by a PM domain.
> > 2. If there is a platform configuration where a PM domain (genpd)
> > isn't going to be attached, then the clock needs to be managed locally
> > in the driver.
>
> Similar to what Geert responded, for Renesas SDHI both is always true
> AFAIU. Geert?
For Renesas SDHI, both are always false ;-)
I.e. CONFIG_PM is always set, genpd is always attached.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
next prev parent reply other threads:[~2020-05-19 8:53 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-15 14:04 [PATCH 2/2] mmc: tmio: Make sure the PM domain is 'started' while probing Ulf Hansson
2020-05-18 20:22 ` Wolfram Sang
2020-05-19 7:50 ` Ulf Hansson
2020-05-19 8:46 ` Wolfram Sang
2020-05-19 8:53 ` Geert Uytterhoeven [this message]
2020-05-19 9:09 ` Wolfram Sang
2020-05-19 9:15 ` Ulf Hansson
2020-05-19 9:21 ` Ulf Hansson
2020-05-19 11:32 ` Wolfram Sang
2020-05-19 11:35 ` Wolfram Sang
2020-05-19 13:54 ` Ulf Hansson
2020-05-18 21:07 ` Geert Uytterhoeven
2020-05-19 8:18 ` Ulf Hansson
2020-05-19 8:29 ` Geert Uytterhoeven
2020-05-19 15:24 Ulf Hansson
2020-05-19 16:38 ` Wolfram Sang
2020-05-20 11:35 ` Ulf Hansson
2020-05-20 15:57 ` Geert Uytterhoeven
2020-05-20 16:11 ` Ulf Hansson
2020-05-20 17:42 ` Geert Uytterhoeven
2020-05-25 8:47 ` Ulf Hansson
2020-05-25 10:04 ` Wolfram Sang
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