Public bug reported:
Drm fail to work on db820c with Focal 5.4 kernel:
...
[ 19.217593] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 19.217603] [drm] Driver supports precise vblank timestamp query.
[ 19.236376] [drm] Initialized msm 1.5.0 20130625 for 900000.mdss on minor 0
[ 19.238653] msm 900000.mdss: [drm:adreno_request_fw [msm]] loaded
qcom/a530_pm4.fw from new location
[ 19.239940] dwc3-qcom 76f8800.usb: IRQ hs_phy_irq not found
[ 19.240295] msm 900000.mdss: [drm:adreno_request_fw [msm]] loaded
qcom/a530_pfp.fw from new location
[ 19.240660] dwc3-qcom 76f8800.usb: IRQ dp_hs_phy_irq not found
[ 19.241802] msm 900000.mdss: [drm:adreno_request_fw [msm]] loaded
qcom/a530v3_gpmu.fw2 from new location
[ 19.246138] dwc3-qcom 76f8800.usb: IRQ dm_hs_phy_irq not found
[ 19.246170] ------------[ cut here ]------------
[ 19.250493] gpu_gx_gfx3d_clk status stuck at 'off'
[ 19.250527] WARNING: CPU: 0 PID: 316 at drivers/clk/qcom/clk-branch.c:91
clk_branch_toggle+0x1a8/0x1c8
[ 19.250530] Modules linked in: snd_soc_apq8096(+) snd_soc_qcom_common
snd_soc_core dwc3 nls_iso8859_1 qcom_spmi_pmic ulpi snd_compress regmap_spmi ud
c_core ac97_bus sha256_arm64(+) snd_pcm_dmaengine snd_pcm venus_core(+) msm(+)
snd_timer v4l2_mem2mem snd icc_core videobuf2_v4l2 atl1c soundcore sha1_c
e videobuf2_common fixed hci_uart btqca drm_kms_helper btrtl btbcm btintel
videodev mc bluetooth glink_ssr drm qrtr slim_qcom_ngd_ctrl fb_sys_fops slimb
us ecdh_generic syscopyarea sysfillrect sysimgblt qcom_rng ecc spi_qup i2c_qup
gpio_keys spmi_pmic_arb spmi dwc3_qcom ufs_qcom qcom_q6v5_pas qcom_sysmon
qcom_q6v5 socinfo qmi_helpers mdt_loader qcom_common rmtfs_mem qcom_glink_smem
uio_pdrv_genirq uio sch_fq_codel ip_tables x_tables autofs4
[ 19.250618] CPU: 0 PID: 316 Comm: systemd-udevd Not tainted 5.4.0-8-generic
#9~genericfold2
[ 19.250620] Hardware name: Qualcomm Technologies, Inc. DB820c (DT)
[ 19.250624] pstate: 60400085 (nZCv daIf +PAN -UAO)
[ 19.250628] pc : clk_branch_toggle+0x1a8/0x1c8
[ 19.250632] lr : clk_branch_toggle+0x1a8/0x1c8
[ 19.250634] sp : ffff800012bcb240
[ 19.250636] x29: ffff800012bcb240 x28: ffff0000d86c2d00
[ 19.250640] x27: ffff800012bcb578 x26: 0000000000000004
[ 19.250644] x25: ffff800011d36008 x24: 0000000000000000
[ 19.250648] x23: ffff8000112e89c8 x22: 0000000000000001
[ 19.250651] x21: ffff8000107d1f90 x20: ffff0000d86c2d00
[ 19.250655] x19: 0000000000000000 x18: 0000000000000010
[ 19.250658] x17: 0000000000000000 x16: 0000000000000000
[ 19.250662] x15: ffff0000d86c3228 x14: ffffffffffffffff
[ 19.250665] x13: ffff800092bcaed7 x12: ffff800012bcaedf
[ 19.250669] x11: 000000000000000d x10: 0000000000000043
[ 19.250672] x9 : 00000000fffffffe x8 : 2073757461747320
[ 19.250676] x7 : 6b6c635f64337866 x6 : ffff800011e3648e
[ 19.250680] x5 : 0000000000000026 x4 : 0000000000000000
[ 19.250683] x3 : 0000000000000000 x2 : 00000000ffffffff
[ 19.250686] x1 : 49f2e2e16f79ce00 x0 : 0000000000000000
[ 19.250691] Call trace:
[ 19.250696] clk_branch_toggle+0x1a8/0x1c8
[ 19.250699] clk_branch2_enable+0x2c/0x38
[ 19.250704] clk_core_enable+0x70/0x228
[ 19.250707] clk_core_enable_lock+0x28/0x48
[ 19.250710] clk_enable+0x28/0x38
[ 19.250716] clk_bulk_enable+0x40/0xb0
[ 19.250828] msm_gpu_pm_resume+0xa8/0x180 [msm]
[ 19.250891] a5xx_pm_resume+0x20/0x158 [msm]
[ 19.250954] adreno_resume+0x28/0x38 [msm]
[ 19.250963] pm_generic_runtime_resume+0x3c/0x58
[ 19.250970] __genpd_runtime_resume+0x38/0xa0
[ 19.250974] genpd_runtime_resume+0x98/0x278
[ 19.250977] __rpm_callback+0x114/0x188
[ 19.250980] rpm_callback+0x34/0x98
[ 19.250982] rpm_resume+0x6a0/0x868
[ 19.250985] __pm_runtime_resume+0x70/0xf8
[ 19.251048] adreno_load_gpu+0x58/0x190 [msm]
[ 19.251113] msm_open+0xa0/0xb0 [msm]
[ 19.251229] drm_file_alloc+0x128/0x1f0 [drm]
[ 19.251287] drm_client_init+0xb4/0x150 [drm]
[ 19.251317] drm_fb_helper_init.part.0+0x50/0x58 [drm_kms_helper]
[ 19.251357] drm_fb_helper_init+0x34/0x50 [drm_kms_helper]
[ 19.251432] msm_fbdev_init+0x68/0xf0 [msm]
[ 19.251515] msm_drm_init.constprop.0+0x5a8/0x620 [msm]
[ 19.251600] msm_drm_bind+0x20/0x30 [msm]
[ 19.251627] try_to_bring_up_master+0x220/0x2f8
[ 19.251643] component_master_add_with_match+0xbc/0x100
[ 19.251709] msm_pdev_probe+0x274/0x318 [msm]
[ 19.251740] platform_drv_probe+0x58/0xa8
[ 19.251749] really_probe+0xe4/0x438
[ 19.251754] driver_probe_device+0xe4/0x138
[ 19.251759] device_driver_attach+0x74/0x80
[ 19.251763] __driver_attach+0xac/0x178
[ 19.251769] bus_for_each_dev+0x80/0xd0
[ 19.251773] driver_attach+0x30/0x40
[ 19.251777] bus_add_driver+0x144/0x220
[ 19.251782] driver_register+0x64/0x110
[ 19.251786] __platform_driver_register+0x54/0x60
[ 19.251850] msm_drm_register+0x60/0x6c [msm]
[ 19.251875] do_one_initcall+0x50/0x220
[ 19.251886] do_init_module+0x5c/0x248
[ 19.251903] load_module+0xecc/0x1170
[ 19.251909] __do_sys_finit_module+0xac/0x110
[ 19.251915] __arm64_sys_finit_module+0x28/0x38
[ 19.251922] el0_svc_common.constprop.0+0xdc/0x1d8
[ 19.251926] el0_svc_handler+0x34/0xa0
[ 19.251931] el0_svc+0x10/0x14
[ 19.251959] ---[ end trace f3e814e2f2a82be0 ]---
[ 19.252131] Failed to enable clk 'core': -16
[ 19.252338] dwc3-qcom 76f8800.usb: IRQ ss_phy_irq not found
[ 19.308910] msm 900000.mdss: [drm:adreno_load_gpu [msm]] *ERROR* Couldn't
power up the GPU: -16
[ 19.309018] [drm] Cannot find any crtc or sizes
...
the bord boots fine, but there's no video output.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1855722
Title:
linux 5.4 generic: db820c: drm fail to work
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