Re: [RFC PATCH 2/9] drm: bridge: Add Samsung SEC MIPI DSIM bridge driver
From: Krzysztof Kozlowski <hidden>
Date: 2021-06-25 10:28:04
Also in:
dri-devel, linux-arm-kernel, linux-devicetree, lkml
On 25/06/2021 12:08, Jagan Teki wrote:
Hi Krzysztof, On Fri, Jun 25, 2021 at 2:51 PM Krzysztof Kozlowski [off-list ref] wrote:quoted
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.quoted
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?
No, Exynos5430 is ARMv7. Looks like improvement over Exynos5422. Exynos5422 has a very good support in mainline while Exynso5430 was never touched at all. Exynos5433 is ARMv8, although many things are shared with 5422. About DSI I have no clue. Best regards, Krzysztof -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy