Re: [PATCH v5 3/3] arm64: dts: qcom: sm8750: Add GPU clock & IOMMU nodes

[Pengyu Luo]

On Thu, Mar 5, 2026 6:40 PM Taniya Das <taniya.das@xxxxxxxxxxxxxxxx> wrote:
> From: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
>
> Add the GPU_CC and GX_CC (brand new! as far as we're concerned, this
> is simply a separate block housing the GX GDSC) nodes, required to
> power up the graphics-related hardware.
>
> Make use of it by enabling the associated IOMMU as well. The GPU itself
> needs some more work and will be enabled later.
>
> Reviewed-by: Abel Vesa <abel.vesa@xxxxxxxxxxxxxxxx>
> Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
> Co-developed-by: Taniya Das <taniya.das@xxxxxxxxxxxxxxxx>
> Signed-off-by: Taniya Das <taniya.das@xxxxxxxxxxxxxxxx>
> ---
>

Hi Taniya and Konrad, GX GDSC stuck at 'on' on my device
the raw register values are

0x3d68024: 0x00000000
0x3d68028: 0x00000000

[    0.593882] msm_dpu ae01000.display-controller: bound 3d00000.gpu
(ops a3xx_ops)
[    0.594237] [drm:dpu_kms_hw_init:1173] dpu hardware revision:0xc0000000
[    0.598140] [drm] Initialized msm 1.13.0 for
ae01000.display-controller on minor 0
[    0.598213] msm_dpu ae01000.display-controller:
[drm:adreno_request_fw] loaded qcom/gen80000_sqe.fw from new location
[    0.598267] msm_dpu ae01000.display-controller:
[drm:adreno_request_fw] loaded qcom/gen80000_gmu.bin from new location
[    0.598288] msm_dpu ae01000.display-controller:
[drm:adreno_request_fw] loaded qcom/gen80000_aqe.fw from new location
[    0.600620] [drm] Loaded GMU firmware v5.1.25
[    0.698366] ------------[ cut here ]------------
[    0.698368] gx_clkctl_gx_gdsc status stuck at 'on'
[    0.698385] WARNING: drivers/clk/qcom/gdsc.c:178 at
gdsc_toggle_logic+0x140/0x160, CPU#3: kworker/u33:3/84
[    0.698394] Modules linked in: fastrpc qrtr_smd rpmsg_ctrl
panel_nt36536(+) joydev mousedev qcom_pd_mapper ucsi_glink
pmic_glink_altmode typec_ucsi aux_hpd_bridge qcom_battmgr aw99706
nvmem_qcom_spmi_sdam nt36532_ts qcom_spmi_temp_alarm fsa4480
regmap_i2c phy_nxp_ptn3222 industrialio rtc_pm8xxx qcom_stats
phy_qcom_qmp_combo aux_bridge typec qcom_q6v5_pas qcom_pil_info
qcom_common phy_qcom_m31_eusb2 qcom_q6v5 qcom_sysmon icc_bwmon
qcom_rng sm3_ce qrtr nvmem_reboot_mode arm_smccc_trng pmic_glink
rng_core
[    0.698445] CPU: 3 UID: 0 PID: 84 Comm: kworker/u33:3 Not tainted
6.19.6-sm8750+ #5 PREEMPT
[    0.698450] Hardware name: LENOVO TB322FC (DT)
[    0.698452] Workqueue: pm pm_runtime_work
[    0.698457] pstate: 61400005 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
[    0.698462] pc : gdsc_toggle_logic+0x140/0x160
[    0.698466] lr : gdsc_toggle_logic+0x140/0x160
[    0.698469] sp : ffff8000810bb920
[    0.698471] x29: ffff8000810bb920 x28: 0000000000000000 x27: 0000000000000000
[    0.698477] x26: ffff000800065428 x25: 0000000000000008 x24: 0000000000000000
[    0.698482] x23: 0000000000000000 x22: 0000000000000000 x21: 0000000000000001
[    0.698487] x20: 0000000000000000 x19: ffffa3c20a6abb98 x18: ffff5c4963eb2000
[    0.698492] x17: ffff000800a062c0 x16: ffffa3c20a71a510 x15: ffffa3c20a56d230
[    0.698497] x14: 0000000000000000 x13: 6f27207461206b63 x12: 7574732073757461
[    0.698502] x11: 0000000000000058 x10: 0000000000000027 x9 : ffffa3c208f81e50
[    0.698507] x8 : 0000000000000027 x7 : 7461206b63757473 x6 : 0000000000000000
[    0.698512] x5 : 0000000000000001 x4 : 00000000fffc025b x3 : 00000000ffffffff
[    0.698517] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff000802511f80
[    0.698522] Call trace:
[    0.698524]  gdsc_toggle_logic+0x140/0x160 (P)
[    0.698528]  gdsc_disable+0x4c/0x190
[    0.698533]  _genpd_power_off+0xa4/0x1a8
[    0.698538]  genpd_power_off.part.0+0x170/0x270
[    0.698543]  genpd_power_off+0x50/0x68
[    0.698548]  genpd_runtime_suspend+0x1e4/0x2e8
[    0.698553]  __rpm_callback+0x50/0x220
[    0.698560]  rpm_callback+0x7c/0x90
[    0.698567]  rpm_suspend+0xe8/0x590
[    0.698573]  rpm_idle+0x128/0x3c0
[    0.698580]  __pm_runtime_idle+0x58/0x100
[    0.698587]  a6xx_gmu_stop+0x74/0x3e0
[    0.698592]  a6xx_gmu_pm_suspend+0x48/0x118
[    0.698597]  adreno_runtime_suspend+0x38/0x68
[    0.698604]  pm_generic_runtime_suspend+0x34/0x60
[    0.698609]  __rpm_callback+0x50/0x220
[    0.698616]  rpm_callback+0x7c/0x90
[    0.698622]  rpm_suspend+0xe8/0x590
[    0.698629]  pm_runtime_work+0xcc/0xe0
[    0.698632]  process_one_work+0x15c/0x3c0
[    0.698638]  worker_thread+0x18c/0x320
[    0.698642]  kthread+0x148/0x208
[    0.698646]  ret_from_fork+0x10/0x20
[    0.698653] ---[ end trace 0000000000000000 ]---

[    6.710781] ------------[ cut here ]------------
[    6.710786] gx_clkctl_gx_gdsc status stuck at 'on'
[    6.710793] WARNING: drivers/clk/qcom/gdsc.c:178 at
gdsc_toggle_logic+0x140/0x160, CPU#5: kworker/u33:5/143
[    6.710799] Modules linked in: snd_q6apm snd_soc_core snd_compress
snd_pcm snd_timer snd soundcore fastrpc qrtr_smd rpmsg_ctrl
panel_nt36536 joydev mousedev qcom_pd_mapper ucsi_glink
pmic_glink_altmode typec_ucsi aux_hpd_bridge qcom_battmgr aw99706
nvmem_qcom_spmi_sdam nt36532_ts qcom_spmi_temp_alarm fsa4480
regmap_i2c phy_nxp_ptn3222 industrialio rtc_pm8xxx qcom_stats
phy_qcom_qmp_combo aux_bridge typec qcom_q6v5_pas qcom_pil_info
qcom_common phy_qcom_m31_eusb2 qcom_q6v5 qcom_sysmon icc_bwmon
qcom_rng sm3_ce qrtr nvmem_reboot_mode arm_smccc_trng pmic_glink
rng_core
[    6.710831] CPU: 5 UID: 0 PID: 143 Comm: kworker/u33:5 Tainted: G
     W           6.19.6-sm8750+ #5 PREEMPT
[    6.710833] Tainted: [W]=WARN
[    6.710834] Hardware name: LENOVO TB322FC (DT)
[    6.710835] Workqueue: pm pm_runtime_work
[    6.710837] pstate: 61400005 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
[    6.710839] pc : gdsc_toggle_logic+0x140/0x160
[    6.710840] lr : gdsc_toggle_logic+0x140/0x160
[    6.710842] sp : ffff80008205b920
[    6.710842] x29: ffff80008205b920 x28: 0000000000000000 x27: 0000000000000000
[    6.710845] x26: ffff000800065428 x25: 0000000000000008 x24: 0000000000000000
[    6.710847] x23: 0000000000000000 x22: 0000000000000000 x21: 0000000000000001
[    6.710849] x20: 0000000000000000 x19: ffffa3c20a6abb98 x18: 000000000000000a
[    6.710851] x17: 0000000006000000 x16: 0000000000000000 x15: 0000000000000000
[    6.710853] x14: 0000000000000000 x13: 6f27207461206b63 x12: 7574732073757461
[    6.710856] x11: 0000000000000058 x10: 0000000000000018 x9 : ffffa3c208f81e50
[    6.710858] x8 : 00000000015fffa8 x7 : 0000000000000316 x6 : 0000000000000001
[    6.710860] x5 : ffff000b6e3a17c8 x4 : ffff5c4963ef2000 x3 : ffff000807c95e80
[    6.710862] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff000807c95e80
[    6.710864] Call trace:
[    6.710865]  gdsc_toggle_logic+0x140/0x160 (P)
[    6.710867]  gdsc_disable+0x4c/0x190
[    6.710869]  _genpd_power_off+0xa4/0x1a8
[    6.710871]  genpd_power_off.part.0+0x170/0x270
[    6.710873]  genpd_power_off+0x50/0x68
[    6.710874]  genpd_runtime_suspend+0x1e4/0x2e8
[    6.710876]  __rpm_callback+0x50/0x220
[    6.710879]  rpm_callback+0x7c/0x90
[    6.710881]  rpm_suspend+0xe8/0x590
[    6.710883]  rpm_idle+0x128/0x3c0
[    6.710885]  __pm_runtime_idle+0x58/0x100
[    6.710887]  a6xx_gmu_stop+0x74/0x3e0
[    6.710890]  a6xx_gmu_pm_suspend+0x48/0x118
[    6.710892]  adreno_runtime_suspend+0x38/0x68
[    6.710894]  pm_generic_runtime_suspend+0x34/0x60
[    6.710896]  __rpm_callback+0x50/0x220
[    6.710898]  rpm_callback+0x7c/0x90
[    6.710900]  rpm_suspend+0xe8/0x590
[    6.710902]  pm_runtime_work+0xcc/0xe0
[    6.710903]  process_one_work+0x15c/0x3c0
[    6.710906]  worker_thread+0x18c/0x320
[    6.710908]  kthread+0x148/0x208
[    6.710909]  ret_from_fork+0x10/0x20
[    6.710912] ---[ end trace 0000000000000000 ]---
[    6.726652] adreno 3d00000.gpu: CP Fault Global INT status: 0x10000
[    6.726659] adreno 3d00000.gpu: CP SW FAULT pipe: 1 status: 0x400
[    6.726661] adreno 3d00000.gpu: CP REG PROTECT error, status=0x608212
[    6.726736] msm_dpu ae01000.display-controller:
[drm:recover_worker] *ERROR* 68.5.0.1: hangcheck recover!
[    6.726748] msm_dpu ae01000.display-controller:
[drm:recover_worker] *ERROR* 68.5.0.1: offending task: kwin_wayland
(/usr/bin/kwin_wayland --wayland-fd 7 --socket wayland-0 --xwayland-fd
8 --xwayland-fd 9 --xwayland-display :0 --xwayland-xauthority
/run/user/1000/xauth_UWXqvr --xwayland)
[    6.726754] revision: 0 (68.5.0.1)
[    6.726756] rb 0: fence:    -255/-254
[    6.726757] rptr:     64
[    6.726758] rb wptr:  168
[    6.728919] ------------[ cut here ]------------
[    6.728921] gx_clkctl_gx_gdsc status stuck at 'on'
[    6.728927] WARNING: drivers/clk/qcom/gdsc.c:178 at
gdsc_toggle_logic+0x140/0x160, CPU#2: gpu-worker/230
[    6.728931] Modules linked in: snd_q6apm snd_soc_core snd_compress
snd_pcm snd_timer snd soundcore fastrpc qrtr_smd rpmsg_ctrl
panel_nt36536 joydev mousedev qcom_pd_mapper ucsi_glink
pmic_glink_altmode typec_ucsi aux_hpd_bridge qcom_battmgr aw99706
nvmem_qcom_spmi_sdam nt36532_ts qcom_spmi_temp_alarm fsa4480
regmap_i2c phy_nxp_ptn3222 industrialio rtc_pm8xxx qcom_stats
phy_qcom_qmp_combo aux_bridge typec qcom_q6v5_pas qcom_pil_info
qcom_common phy_qcom_m31_eusb2 qcom_q6v5 qcom_sysmon icc_bwmon
qcom_rng sm3_ce qrtr nvmem_reboot_mode arm_smccc_trng pmic_glink
rng_core
[    6.728963] CPU: 2 UID: 0 PID: 230 Comm: gpu-worker Tainted: G
  W           6.19.6-sm8750+ #5 PREEMPT
[    6.728965] Tainted: [W]=WARN
[    6.728966] Hardware name: LENOVO TB322FC (DT)
[    6.728967] pstate: 61400005 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
[    6.728969] pc : gdsc_toggle_logic+0x140/0x160
[    6.728970] lr : gdsc_toggle_logic+0x140/0x160
[    6.728971] sp : ffff800080f7b880
[    6.728972] x29: ffff800080f7b880 x28: 0000000000000000 x27: ffff000802674b70
[    6.728975] x26: ffff00080db71080 x25: 0000000000000008 x24: 0000000000000000
[    6.728977] x23: 0000000000000000 x22: 0000000000000000 x21: 0000000000000001
[    6.728979] x20: 0000000000000000 x19: ffffa3c20a6abb98 x18: 000000000000000a
[    6.728981] x17: 0005004800000000 x16: 0000000000050040 x15: 0000000000000000
[    6.728983] x14: 0000000000000000 x13: 6f27207461206b63 x12: 7574732073757461
[    6.728985] x11: 0000000000000058 x10: 0000000000000018 x9 : ffffa3c208f81e50
[    6.728988] x8 : 00000000015fffa8 x7 : 000000000000034e x6 : 0000000000000001
[    6.728990] x5 : ffff000b6e3417c8 x4 : ffff5c4963e92000 x3 : ffff0008089a2f40
[    6.728992] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0008089a2f40
[    6.728994] Call trace:
[    6.728995]  gdsc_toggle_logic+0x140/0x160 (P)
[    6.728997]  gdsc_disable+0x4c/0x190
[    6.728999]  _genpd_power_off+0xa4/0x1a8
[    6.729001]  genpd_power_off.part.0+0x170/0x270
[    6.729003]  genpd_power_off+0x50/0x68
[    6.729005]  genpd_runtime_suspend+0x1e4/0x2e8
[    6.729007]  __rpm_callback+0x50/0x220
[    6.729009]  rpm_callback+0x7c/0x90
[    6.729011]  rpm_suspend+0xe8/0x590
[    6.729014]  rpm_idle+0x128/0x3c0
[    6.729016]  __pm_runtime_idle+0x58/0x100
[    6.729018]  a6xx_gmu_stop+0x74/0x3e0
[    6.729020]  a6xx_gmu_pm_suspend+0x48/0x118
[    6.729022]  adreno_runtime_suspend+0x38/0x68
[    6.729024]  pm_generic_runtime_suspend+0x34/0x60
[    6.729026]  __rpm_callback+0x50/0x220
[    6.729028]  rpm_callback+0x7c/0x90
[    6.729030]  rpm_suspend+0xe8/0x590
[    6.729032]  rpm_idle+0x128/0x3c0
[    6.729034]  __pm_runtime_idle+0x58/0x100
[    6.729037]  a8xx_recover+0x1a0/0x2c0
[    6.729039]  recover_worker+0x244/0x390
[    6.729041]  kthread_worker_fn+0xe0/0x2a0
[    6.729044]  kthread+0x148/0x208
[    6.729045]  ret_from_fork+0x10/0x20
[    6.729047] ---[ end trace 0000000000000000 ]---

Best wishes,
Pengyu