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For example, when on SDM845-HDK the bootloader leaves display enabled, later the kernel can't set up DSI clocks, ending up with the broken display, blinking blue. ------------[ cut here ]------------ disp_cc_mdss_pclk0_clk_src: rcg didn't update its configuration. WARNING: CPU: 7 PID: 81 at drivers/clk/qcom/clk-rcg2.c:136 update_config+0= xd4/0xf0 Modules linked in: CPU: 7 UID: 0 PID: 81 Comm: kworker/u32:3 Not tainted 6.16.0-rc2-00040-ga3= f36de2f3ba #4236 PREEMPT Hardware name: Qualcomm Technologies, Inc. SDM845 HDK (DT) Workqueue: events_unbound deferred_probe_work_func pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=3D--) pc : update_config+0xd4/0xf0 lr : update_config+0xd4/0xf0 sp : ffff800080992a30 x29: ffff800080992a40 x28: 0000000000000001 x27: ffff00008db49080 x26: ffff00008db49220 x25: 0000000000000000 x24: 0000000008d9ee20 x23: ffffd6f1bf1f6cd8 x22: 0000000008d9ee20 x21: ffffd6f1becadfa8 x20: ffffd6f1bf1f6cc0 x19: 0000000000000000 x18: fffffffffffef3f0 x17: 0000000000000004 x16: 0000000000000024 x15: 0000000000000005 x14: fffffffffffcf3ef x13: 2e6e6f6974617275 x12: 6769666e6f632073 x11: 7469206574616470 x10: 752074276e646964 x9 : 72756769666e6f63 x8 : ffff800080992790 x7 : ffff8000809928c0 x6 : ffff800080992850 x5 : ffff8000809927d0 x4 : ffff800080994000 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000808d1b00 Call trace: update_config+0xd4/0xf0 (P) clk_rcg2_configure+0xb8/0xc0 clk_pixel_set_rate+0x138/0x180 clk_change_rate+0x124/0x620 clk_change_rate+0x1b4/0x620 clk_change_rate+0x1b4/0x620 clk_change_rate+0x1b4/0x620 clk_change_rate+0x1b4/0x620 clk_change_rate+0x1b4/0x620 clk_change_rate+0x1b4/0x620 clk_core_set_rate_nolock+0x230/0x2b0 clk_set_rate+0x38/0x90 _opp_config_clk_single+0x30/0x98 _set_opp+0x11c/0x530 dev_pm_opp_set_rate+0x18c/0x280 dsi_link_clk_set_rate_6g+0x44/0x100 msm_dsi_host_power_on+0xc4/0x988 dsi_mgr_bridge_pre_enable+0x194/0x3e0 drm_atomic_bridge_call_pre_enable+0x40/0x58 drm_atomic_bridge_chain_pre_enable+0x50/0x130 drm_atomic_helper_commit_modeset_enables+0x15c/0x26c msm_atomic_commit_tail+0x214/0xb18 commit_tail+0xa0/0x1a0 drm_atomic_helper_commit+0x1a8/0x1d0 drm_atomic_commit+0x8c/0xcc drm_client_modeset_commit_atomic+0x258/0x2d0 drm_client_modeset_commit_locked+0x60/0x1b8 drm_client_modeset_commit+0x2c/0x58 __drm_fb_helper_restore_fbdev_mode_unlocked+0xbc/0xe8 drm_fb_helper_set_par+0x30/0x58 fbcon_init+0x3cc/0x530 visual_init+0x8c/0xe0 do_bind_con_driver.isra.0+0x18c/0x320 do_take_over_console+0x13c/0x1d4 do_fbcon_takeover+0x6c/0xe0 fbcon_fb_registered+0x1dc/0x1e0 do_register_framebuffer+0x1bc/0x278 register_framebuffer+0x30/0x5c __drm_fb_helper_initial_config_and_unlock+0x2dc/0x5a8 drm_fb_helper_initial_config+0x48/0x58 drm_fbdev_client_hotplug+0x7c/0xe0 drm_client_register+0x5c/0xa0 drm_fbdev_client_setup+0xa4/0x1c0 drm_client_setup+0x58/0xa0 msm_drm_bind+0x3b4/0x460 try_to_bring_up_aggregate_device+0x16c/0x1e0 __component_add+0xa8/0x170 component_add+0x14/0x20 dsi_dev_attach+0x20/0x38 dsi_host_attach+0x58/0x98 devm_mipi_dsi_attach+0x34/0x90 lt9611_attach_dsi+0x98/0x120 lt9611_probe+0x3f8/0x4a0 i2c_device_probe+0x154/0x340 really_probe+0xbc/0x2c0 __driver_probe_device+0x78/0x120 driver_probe_device+0x3c/0x160 __device_attach_driver+0xb8/0x140 bus_for_each_drv+0x88/0xe8 __device_attach+0xa0/0x198 device_initial_probe+0x14/0x20 bus_probe_device+0xb4/0xc0 deferred_probe_work_func+0x90/0xcc process_one_work+0x214/0x64c worker_thread+0x1c0/0x364 kthread+0x14c/0x220 ret_from_fork+0x10/0x20 irq event stamp: 110949 hardirqs last enabled at (110949): [] _raw_spin_unlock_= irqrestore+0x6c/0x74 hardirqs last disabled at (110948): [] _raw_spin_lock_ir= qsave+0x84/0x88 softirqs last enabled at (109450): [] release_sock+0x90= /0xa4 softirqs last disabled at (109448): [] release_sock+0x28= /0xa4 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ disp_cc_mdss_pclk1_clk_src: rcg didn't update its configuration. WARNING: CPU: 7 PID: 81 at drivers/clk/qcom/clk-rcg2.c:136 update_config+0= xd4/0xf0 Modules linked in: CPU: 7 UID: 0 PID: 81 Comm: kworker/u32:3 Tainted: G W 6.= 16.0-rc2-00040-ga3f36de2f3ba #4236 PREEMPT Tainted: [W]=3DWARN Hardware name: Qualcomm Technologies, Inc. SDM845 HDK (DT) Workqueue: events_unbound deferred_probe_work_func pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=3D--) pc : update_config+0xd4/0xf0 lr : update_config+0xd4/0xf0 sp : ffff800080992a30 x29: ffff800080992a40 x28: 0000000000000001 x27: ffff00008db49080 x26: ffff00008db49220 x25: 0000000000000000 x24: 0000000008d9ee20 x23: ffffd6f1bf1f6c48 x22: 0000000008d9ee20 x21: ffffd6f1becb1b50 x20: ffffd6f1bf1f6c30 x19: 0000000000000000 x18: ffffffffffff0790 x17: 0000000000000004 x16: 0000000000000024 x15: 0000000000000005 x14: fffffffffffd078f x13: 2e6e6f6974617275 x12: 6769666e6f632073 x11: 7469206574616470 x10: 752074276e646964 x9 : 72756769666e6f63 x8 : ffff800080992790 x7 : ffff8000809928c0 x6 : ffff800080992850 x5 : ffff8000809927d0 x4 : ffff800080994000 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000808d1b00 Call trace: update_config+0xd4/0xf0 (P) clk_rcg2_configure+0xb8/0xc0 clk_pixel_set_rate+0x138/0x180 clk_change_rate+0x124/0x620 clk_change_rate+0x1b4/0x620 clk_change_rate+0x1b4/0x620 clk_change_rate+0x1b4/0x620 clk_change_rate+0x1b4/0x620 clk_change_rate+0x1b4/0x620 clk_change_rate+0x1b4/0x620 clk_core_set_rate_nolock+0x230/0x2b0 clk_set_rate+0x38/0x90 _opp_config_clk_single+0x30/0x98 _set_opp+0x11c/0x530 dev_pm_opp_set_rate+0x18c/0x280 dsi_link_clk_set_rate_6g+0x44/0x100 msm_dsi_host_power_on+0xc4/0x988 dsi_mgr_bridge_pre_enable+0x194/0x3e0 drm_atomic_bridge_call_pre_enable+0x40/0x58 drm_atomic_bridge_chain_pre_enable+0x50/0x130 drm_atomic_helper_commit_modeset_enables+0x15c/0x26c msm_atomic_commit_tail+0x214/0xb18 commit_tail+0xa0/0x1a0 drm_atomic_helper_commit+0x1a8/0x1d0 drm_atomic_commit+0x8c/0xcc drm_client_modeset_commit_atomic+0x258/0x2d0 drm_client_modeset_commit_locked+0x60/0x1b8 drm_client_modeset_commit+0x2c/0x58 __drm_fb_helper_restore_fbdev_mode_unlocked+0xbc/0xe8 drm_fb_helper_set_par+0x30/0x58 fbcon_init+0x3cc/0x530 visual_init+0x8c/0xe0 do_bind_con_driver.isra.0+0x18c/0x320 do_take_over_console+0x13c/0x1d4 do_fbcon_takeover+0x6c/0xe0 fbcon_fb_registered+0x1dc/0x1e0 do_register_framebuffer+0x1bc/0x278 register_framebuffer+0x30/0x5c __drm_fb_helper_initial_config_and_unlock+0x2dc/0x5a8 drm_fb_helper_initial_config+0x48/0x58 drm_fbdev_client_hotplug+0x7c/0xe0 drm_client_register+0x5c/0xa0 drm_fbdev_client_setup+0xa4/0x1c0 drm_client_setup+0x58/0xa0 msm_drm_bind+0x3b4/0x460 try_to_bring_up_aggregate_device+0x16c/0x1e0 __component_add+0xa8/0x170 component_add+0x14/0x20 dsi_dev_attach+0x20/0x38 dsi_host_attach+0x58/0x98 devm_mipi_dsi_attach+0x34/0x90 lt9611_attach_dsi+0x98/0x120 lt9611_probe+0x3f8/0x4a0 i2c_device_probe+0x154/0x340 really_probe+0xbc/0x2c0 __driver_probe_device+0x78/0x120 driver_probe_device+0x3c/0x160 __device_attach_driver+0xb8/0x140 bus_for_each_drv+0x88/0xe8 __device_attach+0xa0/0x198 device_initial_probe+0x14/0x20 bus_probe_device+0xb4/0xc0 deferred_probe_work_func+0x90/0xcc process_one_work+0x214/0x64c worker_thread+0x1c0/0x364 kthread+0x14c/0x220 ret_from_fork+0x10/0x20 irq event stamp: 110949 hardirqs last enabled at (110949): [] _raw_spin_unlock_= irqrestore+0x6c/0x74 hardirqs last disabled at (110948): [] _raw_spin_lock_ir= qsave+0x84/0x88 softirqs last enabled at (109450): [] release_sock+0x90= /0xa4 softirqs last disabled at (109448): [] release_sock+0x28= /0xa4 ---[ end trace 0000000000000000 ]--- lt9611 3-003b: video check: hactive_a=3D0, hactive_b=3D0, vactive=3D0, v_t= otal=3D0, h_total_sysclk=3D0 [drm:dpu_encoder_phys_vid_wait_for_commit_done:540] [dpu error]vblank time= out: 2 [drm:dpu_kms_wait_for_commit_done:524] [dpu error]wait for commit done ret= urned -110 fb0: sys_imageblit: framebuffer is not in virtual address space. [drm:dpu_encoder_phys_vid_wait_for_commit_done:540] [dpu error]vblank time= out: 2 [drm:dpu_kms_wait_for_commit_done:524] [dpu error]wait for commit done ret= urned -110 [drm:dpu_encoder_phys_vid_wait_for_commit_done:540] [dpu error]vblank time= out: 2 [drm:dpu_kms_wait_for_commit_done:524] [dpu error]wait for commit done ret= urned -110 Console: switching to colour frame buffer device 480x135 [drm:dpu_encoder_phys_vid_wait_for_commit_done:540] [dpu error]vblank time= out: 2 [drm:dpu_kms_wait_for_commit_done:524] [dpu error]wait for commit done ret= urned -110 [drm:dpu_encoder_phys_vid_wait_for_commit_done:540] [dpu error]vblank time= out: 2 [drm:dpu_kms_wait_for_commit_done:524] [dpu error]wait for commit done ret= urned -110 Fixes: 13a4b7fb6260 ("pmdomain: core: Leave powered-on genpds on until late= _initcall_sync") Cc: stable@vger.kernel.org Cc: Ulf Hansson Signed-off-by: Dmitry Baryshkov Reviewed-by: Taniya Das --- drivers/clk/qcom/dispcc-sdm845.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/clk/qcom/dispcc-sdm845.c b/drivers/clk/qcom/dispcc-sdm= 845.c index 78e43f6d7502..468b30497746 100644 --- a/drivers/clk/qcom/dispcc-sdm845.c +++ b/drivers/clk/qcom/dispcc-sdm845.c @@ -763,6 +763,7 @@ static struct gdsc mdss_gdsc =3D { .en_rest_wait_val =3D 0x5, .pd =3D { .name =3D "mdss_gdsc", + .flags =3D GENPD_FLAG_NO_STAY_ON, }, .pwrsts =3D PWRSTS_OFF_ON, .flags =3D HW_CTRL | POLL_CFG_GDSCR, --=20 2.47.3