[PATCH v3 0/7] drm: exynos: dsi: Convert drm bridge

[Marek Szyprowski]

Hi Jagan,

On 13.12.2021 13:08, Jagan Teki wrote:
> On Mon, Dec 13, 2021 at 5:34 PM Marek Szyprowski
> <m.szyprowski at samsung.com> wrote:
>> On 12.12.2021 19:14, Jagan Teki wrote:
>>> Updated series about drm bridge conversion of exynos dsi.
>>>
>>> Patch 1: panel checker
>>>
>>> Patch 2: panel_bridge API
>>>
>>> Patch 3: Bridge conversion
>>>
>>> Patch 4: pree_enable, post_disable
>>>
>>> Patch 5: Atomic functions
>>>
>>> Patch 6: atomic_set
>>>
>>> Patch 7: DSI init in enable
>>>
>>> [1] https://patchwork.kernel.org/project/dri-devel/cover/20211210191922.2367979-1-jagan@amarulasolutions.com/
>>>
>>> Any inputs?
>> I've checked this patchset on Exynos based Trats2 board (the one with
>> simplest display pipeline: Exynos FIMD -> Exynos DSI -> s6e8aa0 DSI
>> panel). DRM stops working after the 2nd patch ("[PATCH v3 2/7] drm:
>> exynos: dsi: Use drm panel_bridge API"):
>>
>> # dmesg | grep drm
>> [    2.511893] [drm] Exynos DRM: using 11c00000.fimd device for DMA
>> mapping operations
>> [    2.518653] exynos-drm exynos-drm: bound 11c00000.fimd (ops
>> fimd_component_ops)
>> [    2.535699] exynos-drm exynos-drm: bound 11c80000.dsi (ops
>> exynos_dsi_component_ops)
>> [    2.543912] exynos-drm exynos-drm: [drm] Cannot find any crtc or sizes
>> [    2.556107] [drm] Initialized exynos 1.1.0 20180330 for exynos-drm on
>> minor 0
>> [    2.573212] exynos-dsi 11c80000.dsi: [drm:exynos_dsi_host_attach]
>> *ERROR* failed to find the bridge: -19
> Look like you have missed to apply the Child lookup patch. is it so?
>
> Let me send it, I will CC you as well. And I will also send tc358764
> panel_bridge conversion.

The above log is from Trats2 board, which uses only the s6e8aa0 DSI 
panel. I've also checked the Arndale board, which has tc358764 bridge 
and it also doesn't work. Which patches I have to apply for the tests?

Best regards
-- 
Marek Szyprowski, PhD
Samsung R&D Institute Poland