From: "Guido Günther" <agx@sigxcpu.org>
To: Kishon Vijay Abraham I <kishon@ti.com>,
Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
NXP Linux Team <linux-imx@nxp.com>,
Robert Chiras <robert.chiras@nxp.com>,
Sam Ravnborg <sam@ravnborg.org>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v3 0/1] phy: fsl-imx8-mipi-dphy: Hook into runtime pm
Date: Fri, 19 Feb 2021 10:38:53 +0100 [thread overview]
Message-ID: <YC+HLW9pw7hFbFrD@bogon.m.sigxcpu.org> (raw)
In-Reply-To: <cover.1608142884.git.agx@sigxcpu.org>
Hi,
On Wed, Dec 16, 2020 at 07:22:32PM +0100, Guido Günther wrote:
> This allows us to shut down the mipi power domain on the imx8. The alternative
> would be to drop the dphy from the mipi power domain in the SOCs device tree
> and only have the DSI host controller visible there but since the PD is mostly
> about the PHY that would defeat it's purpose.
Is there anything I can do to move that forward. I assume this needs to
go via the phy/ subsystem not drm?
Cheers,
-- Guido
>
> This is basically a resend from February 2020 which went without feedback.
>
> This allows to shut off the power domain hen blanking the LCD panel:
>
> pm_genpd_summary before:
>
> domain status slaves
> /device runtime status
> ----------------------------------------------------------------------
> mipi on
> /devices/platform/soc@0/soc@0:bus@30800000/30a00300.dphy unsupported
> /devices/platform/soc@0/soc@0:bus@30800000/30a00000.mipi_dsi suspended
>
> after:
>
> mipi off-0
> /devices/platform/soc@0/soc@0:bus@30800000/30a00300.dphy suspended
> /devices/platform/soc@0/soc@0:bus@30800000/30a00000.mipi_dsi suspended
>
> Changes from v1:
> - Tweak commit message slightly
>
> Changes from v2:
> - As pre review comment by Lucas Stach
> https://lore.kernel.org/linux-arm-kernel/ee22b072e0abe07559a3e6a63ccf6ece064a46cb.camel@pengutronix.de/
> Check for pm_runtime_get_sync failure
>
> Guido Günther (1):
> phy: fsl-imx8-mipi-dphy: Hook into runtime pm
>
> .../phy/freescale/phy-fsl-imx8-mipi-dphy.c | 25 ++++++++++++++++++-
> 1 file changed, 24 insertions(+), 1 deletion(-)
>
> --
> 2.29.2
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-02-19 9:40 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-16 18:22 Guido Günther
2021-02-19 9:38 ` Guido Günther [this message]
2021-02-20 5:29 ` Liu Ying
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