On 22.11.2021 15:55, Jagan Teki wrote:
On Mon, Nov 22, 2021 at 7:59 PM Jagan Teki jagan@amarulasolutions.com wrote:
On Mon, Nov 22, 2021 at 7:51 PM Jagan Teki jagan@amarulasolutions.com wrote:
On Mon, Nov 22, 2021 at 7:45 PM Marek Szyprowski m.szyprowski@samsung.com wrote:
On 22.11.2021 08:06, Jagan Teki wrote:
Some display panels would come up with a non-DSI output, those can have an option to connect the DSI host by means of interface bridge converter.
This DSI to non-DSI interface bridge converter would requires DSI Host to handle drm bridge functionalities in order to DSI Host to Interface bridge.
This patch convert the existing to a drm bridge driver with a built-in encoder support for compatibility with existing component drivers.
Signed-off-by: Jagan Teki jagan@amarulasolutions.com
Note: Hi Marek Szyprowski,
Please test this on Panel and Bridge hardware.
I don't have good news, t crashes:
[drm] Exynos DRM: using 13800000.decon device for DMA mapping operations exynos-drm exynos-drm: bound 13800000.decon (ops decon_component_ops) exynos-drm exynos-drm: bound 13880000.decon (ops decon_component_ops) exynos-drm exynos-drm: bound 13930000.mic (ops exynos_mic_component_ops) [drm:drm_bridge_attach] *ERROR* failed to attach bridge /soc@0/dsi@13900000 to encoder TMDS-67: -22 exynos-drm exynos-drm: failed to bind 13900000.dsi (ops exynos_dsi_component_ops): -22 Internal error: synchronous external abort: 96000210 [#1] PREEMPT SMP Modules linked in: CPU: 2 PID: 74 Comm: kworker/u16:1 Not tainted 5.16.0-rc1+ #4141 Hardware name: Samsung TM2E board (DT) Workqueue: events_unbound deferred_probe_work_func pstate: 80000005 (Nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : decon_atomic_disable+0x58/0xd4 lr : decon_atomic_disable+0x28/0xd4 sp : ffff80001390b940 x29: ffff80001390b940 x28: ffff80001259a000 x27: ffff000027f39e80 input: stmfts as /devices/platform/soc@0/14ed0000.hsi2c/i2c-3/3-0049/input/input0 x26: 00000000ffffffea x25: ffff000025a40280 x24: 0000000000000001 x23: ffff800011b55f98 x22: ffff0000315dc000 x21: ffff00002695d100 x20: ffff000027e7a080 x19: ffff0000315e6000 x18: 0000000000000000 x17: 645f736f6e797865 x16: 2073706f28206973 x15: 0000000000028ee0 x14: 0000000000000028 x13: 0000000000000001 x12: 0000000000000040 x11: ffff000023c18920 x10: ffff000023c18922 x9 : ffff8000126352f0 x8 : ffff000023c00270 x7 : 0000000000000000 x6 : ffff000023c00268 x5 : ffff000027e7a3a0 x4 : 0000000000000001 x3 : ffff000027e7a080 x2 : 0000000000000024 x1 : ffff800013bc8024 x0 : ffff0000246117c0 Call trace: decon_atomic_disable+0x58/0xd4 decon_unbind+0x1c/0x3c component_unbind+0x38/0x60 component_bind_all+0x16c/0x25c exynos_drm_bind+0x104/0x1bc try_to_bring_up_master+0x164/0x1d0 __component_add+0xa8/0x174 component_add+0x14/0x20 hdmi_probe+0x438/0x710 platform_probe+0x68/0xe0 really_probe.part.0+0x9c/0x31c __driver_probe_device+0x98/0x144 driver_probe_device+0xc8/0x160 __device_attach_driver+0xb8/0x120 bus_for_each_drv+0x78/0xd0 __device_attach+0xd8/0x180 device_initial_probe+0x14/0x20 bus_probe_device+0x9c/0xa4 deferred_probe_work_func+0x88/0xc4 process_one_work+0x288/0x6f0 worker_thread+0x74/0x470 kthread+0x188/0x194 ret_from_fork+0x10/0x20 Code: 11002042 f9481c61 531e7442 8b020021 (88dffc21) ---[ end trace d73aff585b108954 ]--- Kernel panic - not syncing: synchronous external abort: Fatal exception SMP: stopping secondary CPUs Kernel Offset: disabled CPU features: 0x2,300071c2,00000846 Memory Limit: none ---[ end Kernel panic - not syncing: synchronous external abort: Fatal exception ]---
Is this with Bridge or normal DSI panel?
Can you apply this patch and check? https://protect2.fireeye.com/v1/url?k=aad62f08-f54d1627-aad7a447-0cc47a31cdf...
Any news on this? just asking in case if you missed it.
It is somehow better. System doesn't crash, but the DRM is not bound:
# cat /sys/kernel/debug/device_component/exynos-drm master name status ------------------------------------------------------------- exynos-drm not bound
device name status ------------------------------------------------------------- 13800000.decon not bound 13880000.decon not bound 13930000.mic not bound (unknown) not registered (unknown) not registered
Best regards