From: Ezequiel Garcia <ezequiel@collabora.com>
To: Lucas Stach <l.stach@pengutronix.de>,
Benjamin Gaignard <benjamin.gaignard@collabora.com>,
p.zabel@pengutronix.de, mchehab@kernel.org, robh+dt@kernel.org,
shawnguo@kernel.org, s.hauer@pengutronix.de, festevam@gmail.com,
lee.jones@linaro.org, gregkh@linuxfoundation.org,
mripard@kernel.org, paul.kocialkowski@bootlin.com, wens@csie.org,
jernej.skrabec@siol.net, hverkuil-cisco@xs4all.nl,
emil.l.velikov@gmail.com, "Peng Fan (OSS)" <peng.fan@oss.nxp.com>,
Jacky Bai <ping.bai@nxp.com>
Cc: devel@driverdev.osuosl.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org,
linux-imx@nxp.com, kernel@pengutronix.de, kernel@collabora.com,
cphealy@gmail.com, linux-arm-kernel@lists.infradead.org,
linux-media@vger.kernel.org
Subject: Re: [PATCH v9 03/13] media: hantro: Use syscon instead of 'ctrl' register
Date: Mon, 17 May 2021 10:23:14 -0300 [thread overview]
Message-ID: <5aa5700b862234895a7a6eb251ca3c80fdc1a6d3.camel@collabora.com> (raw)
In-Reply-To: <72fef3d9f79194876f2035e996bb83f9f8b12902.camel@pengutronix.de>
On Mon, 2021-05-17 at 12:52 +0200, Lucas Stach wrote:
> Hi Ezequiel,
>
> Am Sonntag, dem 16.05.2021 um 19:40 -0300 schrieb Ezequiel Garcia:
> > Hi Lucas,
> >
> > On Fri, 2021-04-16 at 12:54 +0200, Lucas Stach wrote:
> > > Am Mittwoch, dem 07.04.2021 um 09:35 +0200 schrieb Benjamin Gaignard:
> > > > In order to be able to share the control hardware block between
> > > > VPUs use a syscon instead a ioremap it in the driver.
> > > > To keep the compatibility with older DT if 'nxp,imx8mq-vpu-ctrl'
> > > > phandle is not found look at 'ctrl' reg-name.
> > > > With the method it becomes useless to provide a list of register
> > > > names so remove it.
> > >
> > > Sorry for putting a spoke in the wheel after many iterations of the
> > > series.
> > >
> > > We just discussed a way forward on how to handle the clocks and resets
> > > provided by the blkctl block on i.MX8MM and later and it seems there is
> > > a consensus on trying to provide virtual power domains from a blkctl
> > > driver, controlling clocks and resets for the devices in the power
> > > domain. I would like to avoid introducing yet another way of handling
> > > the blkctl and thus would like to align the i.MX8MQ VPU blkctl with
> > > what we are planning to do on the later chip generations.
> > >
> > > CC'ing Jacky Bai and Peng Fan from NXP, as they were going to give this
> > > virtual power domain thing a shot.
> > >
> >
> > It seems the i.MX8MM BLK-CTL series are moving forward:
> >
> > https://patchwork.kernel.org/project/linux-arm-kernel/list/?series=479175
> >
> > ... but I'm unable to wrap my head around how this affects the
> > devicetree VPU modelling for i.MX8MQ (and also i.MX8MM, i.MX8MP, ...).
> >
> >
> For the i.MX8MQ we want to have the same virtual power-domains provided
> by a BLK-CTRL driver for the VPUs, as on i.MX8MM. This way we should be
> able to use the same DT bindings for the VPUs on i.MX8MQ and i.MX8MM,
> even though the SoC integration with the blk-ctrl is a little
> different.
>
AFAICS, there's not support for i.MX8MP VPU power domains. I suppose
we should make sure we'll be able to cover those as well.
Will i.MX8MP need its own driver as well?
> > Can you clarify that?
> >
> I'm planning on sending some patches adding i.MX8MQ VPU support to the
> BLK-CTRL driver in the next few days. I guess that should clarify
> things. :)
>
Great.
Thanks a lot,
Ezequiel
next prev parent reply other threads:[~2021-05-17 13:23 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-07 7:35 [PATCH v9 00/13] Add HANTRO G2/HEVC decoder support for IMX8MQ Benjamin Gaignard
2021-04-07 7:35 ` [PATCH v9 01/13] dt-bindings: mfd: Add 'nxp,imx8mq-vpu-ctrl' to syscon list Benjamin Gaignard
2021-04-07 7:35 ` [PATCH v9 02/13] dt-bindings: media: nxp,imx8mq-vpu: Update the bindings for G2 support Benjamin Gaignard
2021-11-29 20:13 ` [PATCH v9 02/13] dt-bindings: media: nxp, imx8mq-vpu: " Adam Ford
2021-11-30 12:34 ` Benjamin Gaignard
2021-04-07 7:35 ` [PATCH v9 03/13] media: hantro: Use syscon instead of 'ctrl' register Benjamin Gaignard
2021-04-16 10:54 ` Lucas Stach
2021-04-16 13:08 ` Benjamin Gaignard
2021-04-16 15:14 ` Lucas Stach
2021-04-20 9:10 ` Benjamin Gaignard
2021-04-20 9:16 ` Hans Verkuil
2021-04-20 9:31 ` Benjamin Gaignard
2021-04-20 11:35 ` Hans Verkuil
2021-05-16 22:40 ` Ezequiel Garcia
2021-05-17 10:52 ` Lucas Stach
2021-05-17 13:23 ` Ezequiel Garcia [this message]
2021-05-17 13:46 ` Lucas Stach
2021-06-04 17:37 ` Ezequiel Garcia
2021-06-28 13:35 ` Benjamin Gaignard
2021-06-28 15:18 ` Ezequiel Garcia
2021-04-07 7:35 ` [PATCH v9 04/13] media: hevc: Add fields and flags for hevc PPS Benjamin Gaignard
2021-04-07 7:35 ` [PATCH v9 05/13] media: hevc: Add decode params control Benjamin Gaignard
2021-04-07 7:35 ` [PATCH v9 06/13] media: hantro: change hantro_codec_ops run prototype to return errors Benjamin Gaignard
2021-04-07 7:35 ` [PATCH v9 07/13] media: hantro: Define HEVC codec profiles and supported features Benjamin Gaignard
2021-04-07 7:35 ` [PATCH v9 08/13] media: hantro: Only use postproc when post processed formats are defined Benjamin Gaignard
2021-04-07 7:35 ` [PATCH v9 09/13] media: uapi: Add a control for HANTRO driver Benjamin Gaignard
2021-04-07 7:35 ` [PATCH v9 10/13] media: hantro: handle V4L2_PIX_FMT_HEVC_SLICE control Benjamin Gaignard
2021-04-07 7:35 ` [PATCH v9 11/13] media: hantro: Introduce G2/HEVC decoder Benjamin Gaignard
2021-04-07 7:35 ` [PATCH v9 12/13] media: hantro: IMX8M: add variant for G2/HEVC codec Benjamin Gaignard
2021-04-07 7:35 ` [PATCH v9 13/13] arm64: dts: imx8mq: Add node to G2 hardware Benjamin Gaignard
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