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From: Jagan Teki <jagan@amarulasolutions.com>
To: Sam Ravnborg <sam@ravnborg.org>
Cc: Inki Dae <inki.dae@samsung.com>,
	Joonyoung Shim <jy0922.shim@samsung.com>,
	Seung-Woo Kim <sw0312.kim@samsung.com>,
	Kyungmin Park <kyungmin.park@samsung.com>,
	Andrzej Hajda <a.hajda@samsung.com>,
	Neil Armstrong <narmstrong@baylibre.com>,
	Robert Foss <robert.foss@linaro.org>,
	Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
	Frieder Schrempf <frieder.schrempf@kontron.de>,
	Daniel Vetter <daniel.vetter@intel.com>,
	Marek Vasut <marex@denx.de>,
	Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>,
	Fabio Estevam <festevam@gmail.com>,
	devicetree <devicetree@vger.kernel.org>,
	linux-samsung-soc@vger.kernel.org,
	dri-devel <dri-devel@lists.freedesktop.org>,
	NXP Linux Team <linux-imx@nxp.com>,
	linux-amarula <linux-amarula@amarulasolutions.com>,
	linux-arm-kernel <linux-arm-kernel@lists.infradead.org>
Subject: Re: [RFC PATCH 00/17] drm: bridge: Samsung MIPI DSIM bridge
Date: Sun, 25 Jul 2021 22:43:55 +0530	[thread overview]
Message-ID: <CAMty3ZANJz=HSKFzZ8gn896uw98iVwMEpGhmanXNbj77Ren4hw@mail.gmail.com> (raw)
In-Reply-To: <YP2ZvoVQyvwTXP++@ravnborg.org>

Hi Sam,

On Sun, Jul 25, 2021 at 10:35 PM Sam Ravnborg <sam@ravnborg.org> wrote:
>
> Hi Jagan,
>
> On Sun, Jul 04, 2021 at 02:32:13PM +0530, Jagan Teki wrote:
> > This series supports common bridge support for Samsung MIPI DSIM
> > which is used in Exynos and i.MX8MM SoC's.
> >
> > The final bridge supports both the Exynos and i.MX8MM DSI devices.
> >
> > Right now bridge offers two sets of implementations.
> >
> > A. With component_ops and exynos specific code exclusively for
> >    exynos dsi drivers and it's legacy bindings.
> >
> > B. Without componenet_ops for newly implemented bridges and its
> >    users like i.MX8MM.
> >
> > The future plan is to fix the implementation A) by dropping
> > component_ops and fixing exynos specific code in order to make
> > the bridge more mature to use and the same is mentioned in
> > drivers TODO.
> >
> > Patch 0001 - 0006: Bridge conversion
> > Patch 0007 - 0017: Samsung MIPI DSIM bridge fixes, additions
> >
> > Tested in Engicam i.Core MX8M Mini SoM.
> >
> > Anyone interest, please have a look on this repo
> > https://github.com/openedev/linux/tree/070421-imx8mm-dsim
> >
> > Would appreciate anyone from the exynos team to test it on
> > the exynos platform?
> >
> > Any inputs?
>
> I really like where you are headign with this!
> No testing - sorry. But I will try to provide a bit of feedback on the
> individual patches.
>
> I hope you find a way to move forward with this.

Thanks for the response.

We have found some issues with Bridge conversion on existing exynos
drivers. The component based DSI drivers(like exynos) are difficult to
attach if it involves kms hotplug. kms hotplug would require drm
pointer and that pointer would only available after the bind call
finishes. But the bridge attach in bind call will defer till it find
the attached bridge.

Right now I'm trying to find the proper way to attach the bridges for
component based DSI drivers which involves kms hot-plug.

If you have any ideas on this, please let me know.

Thanks,
Jagan.

  parent reply	other threads:[~2021-07-25 17:14 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-04  9:02 Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 01/17] drm/exynos: dsi: Convert to bridge driver Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 02/17] drm/exynos: dsi: Handle drm_device for bridge Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 03/17] drm/exynos: dsi: Use the drm_panel_bridge API Jagan Teki
2021-07-05 11:47   ` Marek Szyprowski
2021-07-05 12:00     ` Jagan Teki
2021-07-05 12:13       ` Marek Szyprowski
2021-07-05 12:34         ` Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 04/17] drm/exynos: dsi: Create bridge connector for encoder Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 05/17] drm/exynos: dsi: Get the mode from bridge Jagan Teki
2021-07-29 13:20   ` Robert Foss
2021-07-04  9:02 ` [RFC PATCH 06/17] drm/exynos: dsi: Handle exynos specifics via driver_data Jagan Teki
     [not found]   ` <YP2el40V3K4R7ner@ravnborg.org>
2021-07-25 17:31     ` Jagan Teki
2021-08-13  6:50     ` Inki Dae
2021-08-13 12:16       ` Laurent Pinchart
2021-08-18  6:09         ` Inki Dae
2021-07-04  9:02 ` [RFC PATCH 07/17] drm: bridge: Move exynos_drm_dsi into bridges Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 08/17] dt-bindings: display: bridge: Add Samsung MIPI DSIM bridge Jagan Teki
2021-07-12 15:13   ` Rob Herring
2021-07-12 15:23     ` Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 09/17] drm: bridge: samsung-dsim: Add module init, exit Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 10/17] drm: bridge: samsung-dsim: Update the of_node for port(s) Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 11/17] drm: bridge: samsung-dsim: Find the possible DSI devices Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 12/17] dt-bindings: display: bridge: samsung,mipi-dsim: Add i.MX8MM support Jagan Teki
2021-07-14 22:59   ` Rob Herring
2021-07-04  9:02 ` [RFC PATCH 13/17] drm: bridge: samsung-dsim: " Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 14/17] drm: bridge: samsung-dsim: Add input_bus_flags Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 15/17] drm: bridge: samsung-dsim: Move DSI init in bridge enable Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 16/17] drm: bridge: samsung-dsim: Fix PLL_P offset Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 17/17] drm: bridge: samsung-dsim: Add bridge mode_fixup Jagan Teki
     [not found] ` <YP2ZvoVQyvwTXP++@ravnborg.org>
2021-07-25 17:13   ` Jagan Teki [this message]
2021-10-05 21:43     ` [RFC PATCH 00/17] drm: bridge: Samsung MIPI DSIM bridge Tim Harvey
2021-12-09  8:36       ` Michael Nazzareno Trimarchi
2021-12-09 16:40         ` Tim Harvey
2021-12-09 17:09           ` Michael Nazzareno Trimarchi
2021-12-09 17:57             ` Tim Harvey
2021-12-09 20:24             ` Lucas Stach
2021-12-09 21:24               ` Michael Nazzareno Trimarchi
2021-12-15 13:34                 ` Adam Ford

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