Hi Marek, On Mon, Nov 22, 2021 at 7:51 PM Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx> wrote: > > Hi Marek, > > On Mon, Nov 22, 2021 at 7:45 PM Marek Szyprowski > <m.szyprowski@xxxxxxxxxxx> 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@xxxxxxxxxxxxxxxxxxxx> > > > --- > > > 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://github.com/openedev/linux/commit/412f226acd774356e8188c9e62b653672926ee0d Jagan.
