Jan 8 23:49:43 pine64-plus kernel: [ 5144.681388] BUG: scheduling while atomic: gsd-backlight-h/3978/0x00000002
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688221] Modules linked in: fuse rfkill dw_hdmi_i2s_audio snd_soc_hdmi_codec panel_feiyang_fy07024di26a30d sunxi_cedrus(C) v4l2_mem2mem crct10dif_ce sun8i_drm_hdmi videobuf2_dma_contig snd_soc_spdif_tx dw_hdmi videobuf2_memops axp20x_adc cec videobuf2_v4l2 snd_soc_simple_card sunxi_cir axp20x_usb_power axp20x_ac_power snd_soc_simple_card_utils pinctrl_axp209 axp20x_battery phy_sun6i_mipi_dphy rc_core videobuf2_common mali(O) sun6i_mipi_dsi sun50i_codec_analog videodev sun8i_adda_pr_regmap crc_ccitt goodix sun8i_codec sun4i_i2s mc sun4i_drm sun4i_frontend sun4i_tcon sun8i_mixer sun8i_tcon_top pwm_bl ip_tables x_tables ipv6 nf_defrag_ipv6
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688331] CPU: 3 PID: 3978 Comm: gsd-backlight-h Tainted: G C O 5.4.8 #1
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688334] Hardware name: Pine64+ (DT)
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688339] Call trace:
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688357] dump_backtrace+0x0/0x150
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688364] show_stack+0x14/0x20
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688374] dump_stack+0xb4/0xd8
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688384] __schedule_bug+0x50/0x70
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688392] __schedule+0x4bc/0x510
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688397] schedule+0x40/0xd0
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688403] schedule_preempt_disabled+0x20/0x38
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688410] __mutex_lock.isra.10+0x150/0x568
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688416] __mutex_lock_slowpath+0x10/0x18
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688422] mutex_lock+0x38/0x40
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688430] clk_prepare_lock+0x40/0xa0
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688437] clk_get_rate+0x1c/0x70
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688446] sun4i_pwm_apply+0xb4/0x450
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688453] pwm_apply_state+0x64/0x1e8
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688464] pwm_backlight_update_status+0xb8/0x198 [pwm_bl]
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688473] backlight_device_set_brightness+0x64/0xb8
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688480] brightness_store+0x78/0x90
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688488] dev_attr_store+0x14/0x28
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688496] sysfs_kf_write+0x3c/0x50
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688501] kernfs_fop_write+0x144/0x230
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688511] __vfs_write+0x18/0x38
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688517] vfs_write+0xb4/0x1e0
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688524] ksys_write+0x68/0xf8
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688530] __arm64_sys_write+0x18/0x20
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688540] el0_svc_common.constprop.2+0x64/0x160
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688547] el0_svc_handler+0x20/0x80
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688552] el0_svc+0x8/0xc
Jan 8 23:49:43 pine64-plus kernel: [ 5144.688694] BUG: scheduling while atomic: gsd-backlight-h/3978/0x00000000
Jan 8 23:49:43 pine64-plus kernel: [ 5144.695480] Modules linked in: fuse rfkill dw_hdmi_i2s_audio snd_soc_hdmi_codec panel_feiyang_fy07024di26a30d sunxi_cedrus(C) v4l2_mem2mem crct10dif_ce sun8i_drm_hdmi videobuf2_dma_contig snd_soc_spdif_tx dw_hdmi videobuf2_memops axp20x_adc cec videobuf2_v4l2 snd_soc_simple_card sunxi_cir axp20x_usb_power axp20x_ac_power snd_soc_simple_card_utils pinctrl_axp209 axp20x_battery phy_sun6i_mipi_dphy rc_core videobuf2_common mali(O) sun6i_mipi_dsi sun50i_codec_analog videodev sun8i_adda_pr_regmap crc_ccitt goodix sun8i_codec sun4i_i2s mc sun4i_drm sun4i_frontend sun4i_tcon sun8i_mixer sun8i_tcon_top pwm_bl ip_tables x_tables ipv6 nf_defrag_ipv6
Jan 8 23:49:43 pine64-plus kernel: [ 5144.695558] CPU: 3 PID: 3978 Comm: gsd-backlight-h Tainted: G WC O 5.4.8 #1
Jan 8 23:49:43 pine64-plus kernel: [ 5144.695561] Hardware name: Pine64+ (DT)
Jan 8 23:49:43 pine64-plus kernel: [ 5144.695564] Call trace:
Jan 8 23:49:43 pine64-plus kernel: [ 5144.695579] dump_backtrace+0x0/0x150
Jan 8 23:49:43 pine64-plus kernel: [ 5144.695583] show_stack+0x14/0x20
Jan 8 23:49:43 pine64-plus kernel: [ 5144.695591] dump_stack+0xb4/0xd8
Jan 8 23:49:43 pine64-plus kernel: [ 5144.695600] __schedule_bug+0x50/0x70
Jan 8 23:49:43 pine64-plus kernel: [ 5144.695605] __schedule+0x4bc/0x510
Jan 8 23:49:43 pine64-plus kernel: [ 5144.695610] schedule+0x40/0xd0
Jan 8 23:49:43 pine64-plus kernel: [ 5144.695615] do_notify_resume+0x1e0/0x398
Jan 8 23:49:43 pine64-plus kernel: [ 5144.695620] work_pending+0x8/0x10
Jan 8 23:49:45 pine64-plus kernel: [ 5146.894318] BUG: scheduling while atomic: gsd-backlight-h/3987/0x00000002
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901147] Modules linked in: fuse rfkill dw_hdmi_i2s_audio snd_soc_hdmi_codec panel_feiyang_fy07024di26a30d sunxi_cedrus(C) v4l2_mem2mem crct10dif_ce sun8i_drm_hdmi videobuf2_dma_contig snd_soc_spdif_tx dw_hdmi videobuf2_memops axp20x_adc cec videobuf2_v4l2 snd_soc_simple_card sunxi_cir axp20x_usb_power axp20x_ac_power snd_soc_simple_card_utils pinctrl_axp209 axp20x_battery phy_sun6i_mipi_dphy rc_core videobuf2_common mali(O) sun6i_mipi_dsi sun50i_codec_analog videodev sun8i_adda_pr_regmap crc_ccitt goodix sun8i_codec sun4i_i2s mc sun4i_drm sun4i_frontend sun4i_tcon sun8i_mixer sun8i_tcon_top pwm_bl ip_tables x_tables ipv6 nf_defrag_ipv6
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901246] CPU: 0 PID: 3987 Comm: gsd-backlight-h Tainted: G WC O 5.4.8 #1
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901250] Hardware name: Pine64+ (DT)
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901254] Call trace:
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901271] dump_backtrace+0x0/0x150
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901277] show_stack+0x14/0x20
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901286] dump_stack+0xb4/0xd8
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901296] __schedule_bug+0x50/0x70
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901303] __schedule+0x4bc/0x510
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901307] schedule+0x40/0xd0
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901313] schedule_preempt_disabled+0x20/0x38
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901319] __mutex_lock.isra.10+0x150/0x568
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901324] __mutex_lock_slowpath+0x10/0x18
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901330] mutex_lock+0x38/0x40
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901337] clk_prepare_lock+0x40/0xa0
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901343] clk_get_rate+0x1c/0x70
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901352] sun4i_pwm_apply+0xb4/0x450
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901357] pwm_apply_state+0x64/0x1e8
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901368] pwm_backlight_update_status+0xb8/0x198 [pwm_bl]
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901375] backlight_device_set_brightness+0x64/0xb8
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901381] brightness_store+0x78/0x90
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901389] dev_attr_store+0x14/0x28
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901396] sysfs_kf_write+0x3c/0x50
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901401] kernfs_fop_write+0x144/0x230
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901409] __vfs_write+0x18/0x38
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901415] vfs_write+0xb4/0x1e0
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901421] ksys_write+0x68/0xf8
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901427] __arm64_sys_write+0x18/0x20
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901435] el0_svc_common.constprop.2+0x64/0x160
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901441] el0_svc_handler+0x20/0x80
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901446] el0_svc+0x8/0xc
Jan 8 23:49:45 pine64-plus kernel: [ 5146.901612] BUG: scheduling while atomic: gsd-backlight-h/3987/0x00000000
Jan 8 23:49:45 pine64-plus kernel: [ 5146.908388] Modules linked in: fuse rfkill dw_hdmi_i2s_audio snd_soc_hdmi_codec panel_feiyang_fy07024di26a30d sunxi_cedrus(C) v4l2_mem2mem crct10dif_ce sun8i_drm_hdmi videobuf2_dma_contig snd_soc_spdif_tx dw_hdmi videobuf2_memops axp20x_adc cec videobuf2_v4l2 snd_soc_simple_card sunxi_cir axp20x_usb_power axp20x_ac_power snd_soc_simple_card_utils pinctrl_axp209 axp20x_battery phy_sun6i_mipi_dphy rc_core videobuf2_common mali(O) sun6i_mipi_dsi sun50i_codec_analog videodev sun8i_adda_pr_regmap crc_ccitt goodix sun8i_codec sun4i_i2s mc sun4i_drm sun4i_frontend sun4i_tcon sun8i_mixer sun8i_tcon_top pwm_bl ip_tables x_tables ipv6 nf_defrag_ipv6
Jan 8 23:49:45 pine64-plus kernel: [ 5146.908479] CPU: 0 PID: 3987 Comm: gsd-backlight-h Tainted: G WC O 5.4.8 #1
Jan 8 23:49:45 pine64-plus kernel: [ 5146.908482] Hardware name: Pine64+ (DT)
Jan 8 23:49:45 pine64-plus kernel: [ 5146.908486] Call trace:
Jan 8 23:49:45 pine64-plus kernel: [ 5146.908500] dump_backtrace+0x0/0x150
Jan 8 23:49:45 pine64-plus kernel: [ 5146.908507] show_stack+0x14/0x20
Jan 8 23:49:45 pine64-plus kernel: [ 5146.908517] dump_stack+0xb4/0xd8
Jan 8 23:49:45 pine64-plus kernel: [ 5146.908526] __schedule_bug+0x50/0x70
Jan 8 23:49:45 pine64-plus kernel: [ 5146.908533] __schedule+0x4bc/0x510
Jan 8 23:49:45 pine64-plus kernel: [ 5146.908538] schedule+0x40/0xd0
Jan 8 23:49:45 pine64-plus kernel: [ 5146.908545] do_notify_resume+0x1e0/0x398
Jan 8 23:49:45 pine64-plus kernel: [ 5146.908551] work_pending+0x8/0x10
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Hi Clément,Sure, i will try to apply the MIPI-DSI patch to linux-next, but i see there are a lot of changes to be made and this can take some time.
I will report back when i get the results.
Thanks,
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--- /arm/ubuntu/nanopi-a64-linux-next/linux-next/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.h
+++ /arm/ubuntu/nanopi-a64-linux-next/linux-5.4.8/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.h
@@ -13,7 +13,11 @@
#include <drm/drm_encoder.h>
#include <drm/drm_mipi_dsi.h>
-#define SUN6I_DSI_TCON_DIV 4
+#include <linux/regulator/consumer.h>
+
+struct sun6i_dsi_variant {
+ bool has_mod_clk;
+};
struct sun6i_dsi {
struct drm_connector connector;
@@ -29,8 +33,10 @@
struct device *dev;
struct sun4i_drv *drv;
+ struct sun4i_tcon *tcon;
struct mipi_dsi_device *device;
struct drm_panel *panel;
+ const struct sun6i_dsi_variant *variant;
};
static inline struct sun6i_dsi *host_to_sun6i_dsi(struct mipi_dsi_host *host)
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Here is a workaround that seems to be working so far for the kernel 5.3 and 5.4.
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