Thread (36 messages) 36 messages, 8 authors, 2021-06-30

Re: [RFC PATCH 2/9] drm: bridge: Add Samsung SEC MIPI DSIM bridge driver

From: Jagan Teki <jagan@amarulasolutions.com>
Date: 2021-06-25 10:09:18
Also in: dri-devel, linux-arm-kernel, linux-phy, lkml

Hi Krzysztof,

On Fri, Jun 25, 2021 at 2:51 PM Krzysztof Kozlowski
[off-list ref] wrote:
On Thu, 24 Jun 2021 at 14:19, Laurent Pinchart
[off-list ref] wrote:
quoted
Hi Jagan,

On Thu, Jun 24, 2021 at 05:42:43PM +0530, Jagan Teki wrote:
quoted
On Thu, Jun 24, 2021 at 8:18 AM Fabio Estevam wrote:
quoted
On Wed, Jun 23, 2021 at 7:23 PM Laurent Pinchart wrote:
quoted
Looking at the register set, it seems to match the Exynos 5433,
supported by drivers/gpu/drm/exynos/exynos_drm_dsi.c. Can we leverage
that driver instead of adding a new one for the same IP core ?
Yes. there was an attempt from Michael in this direction:
https://patchwork.kernel.org/project/dri-devel/cover/20200911135413.3654800-1-m.tretter@pengutronix.de/
Thanks for the reference, I will check it out and see I can send any
updated versions wrt my i.MX8MM platform.
Thanks.

I had a brief look at the exynos driver, and I think it should be turned
into a DRM bridge as part of this rework to be used with the i.MX8MM.

Is there someone from Samsung who could assist, at least to test the
changes ?
Yes, I mentioned few guys in reply to PHY. Around the DRM drivers you
can get in touch with:
Inki Dae [off-list ref]
Seung-Woo Kim [off-list ref]
Marek Szyprowski [off-list ref]
Andrzej Hajda [off-list ref]
Thanks for the information.
The easiest testing of the display stack would be on Hardkernel's Odroid
XU4 (https://www.hardkernel.com/shop/odroid-xu4-special-price/) however
you will not test the DSI/DSIM directly (it has only HDMI port).
Look like I found one board with Exynos5430 with DSI. Does this SoC is
same as mainline Exynos5433?

Jagan.
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