Hi Krzysztof, On 03.09.2020 22:08, Krzysztof Kozlowski wrote: > On Thu, 3 Sep 2020 at 18:57, Michael Tretter <m.tretter@xxxxxxxxxxxxxx> wrote: >> the Exynos MIPI DSI Phy is also found on the i.MX8M Mini. However, on the >> i.MX8M Mini, the bridge is driven by an LCDIF display controller instead of >> the Exynos Decon. The driver for the LCDIF does not use the component >> framework, but uses drm bridges. >> >> This series converts the Exynos MIPI DSI into a drm bridge and makes it usable >> with such drivers. Although the driver is converted, it still supports the >> component framework API to stay compliant with the Exynos DRM driver. >> >> Unfortunately, I don't have any Exynos SoC to actually test the series. I >> tested the driver with a few additional unfinished patches on the i.MX8M Mini >> EVK, but somebody should definitely verify that the driver is still working on >> Exynos hardware. > Hi Michael, > > +Cc maintainers and folks in Samsung. > > Please follow the script/get_maintainers.pl to get the list of > maintainers of the Exynos DRM drivers. First they could provide you > with testing, second they might be the people merging the driver. > > Unfortunately I cannot provide proper testing as none of my boards > have a display attached. :) Thanks for adding cc to me. Sadly this patchset crashed badly on Samsung Exnyos based boards. Here is the log from Exynos3250-based Rinato: exynos4-fb 11c00000.fimd: Adding to iommu group 0 OF: graph: no port node found in /soc/fimd@11c00000 [drm] Exynos DRM: using 11c00000.fimd device for DMA mapping operations exynos-drm exynos-drm: bound 11c00000.fimd (ops fimd_component_ops) OF: graph: no port node found in /soc/dsi@11c80000 8<--- cut here --- Unable to handle kernel NULL pointer dereference at virtual address 00000650 pgd = (ptrval) [00000650] *pgd=00000000 Internal error: Oops: 5 [#1] PREEMPT SMP ARM Modules linked in: CPU: 1 PID: 1 Comm: swapper/0 Not tainted 5.9.0-rc2-next-20200824-00017-g3e9b20f7eb0d #1576 Hardware name: Samsung Exynos (Flattened Device Tree) PC is at samsung_dsim_resume+0x18/0x120 LR is at genpd_runtime_resume+0x160/0x278 ... [<c064f590>] (samsung_dsim_resume) from [<c0685020>] (genpd_runtime_resume+0x160/0x278) [<c0685020>] (genpd_runtime_resume) from [<c0677e84>] (__rpm_callback+0xbc/0x124) [<c0677e84>] (__rpm_callback) from [<c0677f0c>] (rpm_callback+0x20/0x80) [<c0677f0c>] (rpm_callback) from [<c0676aec>] (rpm_resume+0x388/0x714) [<c0676aec>] (rpm_resume) from [<c0676edc>] (__pm_runtime_resume+0x64/0x9c) [<c0676edc>] (__pm_runtime_resume) from [<c0669e10>] (__device_attach+0xcc/0x17c) [<c0669e10>] (__device_attach) from [<c0668ee8>] (bus_probe_device+0x88/0x90) [<c0668ee8>] (bus_probe_device) from [<c06660a0>] (device_add+0x4e8/0x79c) [<c06660a0>] (device_add) from [<c063dc1c>] (mipi_dsi_device_register_full+0xc8/0x148) [<c063dc1c>] (mipi_dsi_device_register_full) from [<c063dcec>] (mipi_dsi_host_register+0x50/0x168) [<c063dcec>] (mipi_dsi_host_register) from [<c064d90c>] (samsung_dsim_bind+0x368/0x40c) [<c064d90c>] (samsung_dsim_bind) from [<c06449f8>] (exynos_dsi_bind+0x78/0x88) [<c06449f8>] (exynos_dsi_bind) from [<c0661ef0>] (component_bind_all+0xfc/0x290) [<c0661ef0>] (component_bind_all) from [<c06413d0>] (exynos_drm_bind+0xe4/0x19c) [<c06413d0>] (exynos_drm_bind) from [<c0662464>] (try_to_bring_up_master+0x1e4/0x2c4) [<c0662464>] (try_to_bring_up_master) from [<c06629a4>] (component_master_add_with_match+0xd4/0x108) [<c06629a4>] (component_master_add_with_match) from [<c06410f8>] (exynos_drm_platform_probe+0xe4/0x110) [<c06410f8>] (exynos_drm_platform_probe) from [<c066cb8c>] (platform_drv_probe+0x6c/0xa4) [<c066cb8c>] (platform_drv_probe) from [<c066a0c8>] (really_probe+0x200/0x4fc) [<c066a0c8>] (really_probe) from [<c066a58c>] (driver_probe_device+0x78/0x1fc) [<c066a58c>] (driver_probe_device) from [<c066a974>] (device_driver_attach+0x58/0x60) [<c066a974>] (device_driver_attach) from [<c066aa58>] (__driver_attach+0xdc/0x174) [<c066aa58>] (__driver_attach) from [<c0667e50>] (bus_for_each_dev+0x68/0xb4) [<c0667e50>] (bus_for_each_dev) from [<c0669184>] (bus_add_driver+0x158/0x214) [<c0669184>] (bus_add_driver) from [<c066b93c>] (driver_register+0x78/0x110) [<c066b93c>] (driver_register) from [<c06412b8>] (exynos_drm_init+0xe4/0x118) [<c06412b8>] (exynos_drm_init) from [<c01023f4>] (do_one_initcall+0x8c/0x424) [<c01023f4>] (do_one_initcall) from [<c10011a8>] (kernel_init_freeable+0x190/0x1dc) [<c10011a8>] (kernel_init_freeable) from [<c0ae8e5c>] (kernel_init+0x8/0x118) [<c0ae8e5c>] (kernel_init) from [<c0100114>] (ret_from_fork+0x14/0x20) Exception stack(0xd94a5fb0 to 0xd94a5ff8) ... ---[ end trace 1a053145d15f23dc ]--- Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b CPU0: stopping CPU: 0 PID: 0 Comm: swapper/0 Tainted: G D 5.9.0-rc2-next-20200824-00017-g3e9b20f7eb0d #1576 Hardware name: Samsung Exynos (Flattened Device Tree) [<c011160c>] (unwind_backtrace) from [<c010cfc0>] (show_stack+0x10/0x14) [<c010cfc0>] (show_stack) from [<c0533c3c>] (dump_stack+0xbc/0xe8) [<c0533c3c>] (dump_stack) from [<c01104e0>] (handle_IPI+0x3e0/0x428) [<c01104e0>] (handle_IPI) from [<c05511dc>] (gic_handle_irq+0x98/0x9c) [<c05511dc>] (gic_handle_irq) from [<c0100af0>] (__irq_svc+0x70/0xb0) Exception stack(0xc1101f08 to 0xc1101f50) ... [<c0100af0>] (__irq_svc) from [<c01095dc>] (arch_cpu_idle+0x24/0x44) [<c01095dc>] (arch_cpu_idle) from [<c01635dc>] (do_idle+0x1bc/0x2bc) [<c01635dc>] (do_idle) from [<c0163a90>] (cpu_startup_entry+0x18/0x1c) [<c0163a90>] (cpu_startup_entry) from [<c1000f88>] (start_kernel+0x628/0x664) [<c1000f88>] (start_kernel) from [<00000000>] (0x0) ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b ]--- I've didn't check the code yet, but the conversion also lacks "select DRM_SAMSUNG_DSIM" in the Exynos DSI driver's Kconfig, as I wasn't even able to compile it with the current exynos_defconfig. I've tested it on top of next-20200824, because it doesn't apply on current linux-next. Best regards -- Marek Szyprowski, PhD Samsung R&D Institute Poland _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
