Hi Bjorn and Vinod, I'm trying to enable the display subsystem on SM8150 but am having trouble enabling the DISP_CC_MDSS_AHB_CLK. Trace shows "disp_cc_mdss_ahb_clk status stuck at off". Do you have any pointers on enabling this clock? [ 2.478418] platform ae94000.dsi: Fixing up cyclic dependency with ae00000.mdss:mdp@ae010000 [ 2.478832] platform ae94400.dsi-phy: Fixing up cyclic dependency with af00000.clock-controller [ 2.479134] msm_dsi_phy ae94400.dsi-phy: [drm:dsi_phy_driver_probe [msm]] *ERROR* dsi_phy_driver_probe: Unable to get ahb clk [ 2.480919] disp_cc-sm8250 af00000.clock-controller: supply mmcx not found, using dummy regulator [ 2.487023] ath10k_snoc 18800000.wifi: supply vdd-3.3-ch1 not found, using dummy regulator [ 2.498954] platform ae96000.dsi: Fixing up cyclic dependency with ae00000.mdss:mdp@ae010000 [ 2.513953] ------------[ cut here ]------------ [ 2.536309] disp_cc_mdss_ahb_clk status stuck at 'off' [ 2.536320] WARNING: CPU: 6 PID: 76 at drivers/clk/qcom/clk-branch.c:91 clk_branch_wait+0x14c/0x164 [ 2.536329] Modules linked in: ath10k_snoc msm(+) ath10k_core gpu_sched crct10dif_ce ath drm_kms_helper qcom_spmi_adc5 qcom_vadc_common mac80211 syscopyarea qrtr libarc4 sysfillrect qcom_pon sysimgblt rtc_pm8xxx qcom_spmi_temp_alarm fb_sys_fops i2c_qcom_geni(+) drm cfg80211 rfkill phy_qcom_qmp ufs_qcom icc_osm_l3 qcom_q6v5_pas qcom_pil_info qcom_wdt qcom_q6v5 qcom_sysmon qcom_common qcom_glink_smem qmi_helpers [ 2.549572] mdt_loader qnoc_sm8150 socinfo rmtfs_mem [ 2.549577] CPU: 6 PID: 76 Comm: kworker/u16:2 Not tainted 5.15.0 #17 [ 3.095528] Hardware name: Microsoft Surface Duo (DT) [ 3.100721] Workqueue: events_unbound deferred_probe_work_func [ 3.106713] pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 3.113857] pc : clk_branch_wait+0x14c/0x164 [ 3.118238] lr : clk_branch_wait+0x14c/0x164 [ 3.122620] sp : ffff80001078ba40 [ 3.126030] x29: ffff80001078ba40 x28: 0000000000000000 x27: ffff65e6008e2100 [ 3.133348] x26: ffffb8630ec8e278 x25: ffff65e60005e005 x24: ffffb8630ebc0f98 [ 3.140665] x23: ffffb8630e234dd8 x22: 0000000000000001 x21: ffffb8630d5b8b60 [ 3.147983] x20: 0000000000000000 x19: ffffb8630eb5e7b8 x18: 0000000000000030 [ 3.155301] x17: 2e726f74616c7567 x16: ffffb8630d5a3800 x15: ffffffffffffffff [ 3.162619] x14: 0000000000000000 x13: 6f27207461206b63 x12: 7574732073757461 [ 3.169937] x11: 77705f313439386d x10: 0000000000000027 x9 : ffffb8630cf974bc [ 3.177256] x8 : 0000000000000027 x7 : 0000000000000002 x6 : 0000000000000027 [ 3.184573] x5 : ffff65e6f93cc9a8 x4 : ffff80001078b890 x3 : 0000000000000001 [ 3.191891] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff65e600851d80 [ 3.199209] Call trace: [ 3.201722] clk_branch_wait+0x14c/0x164 [ 3.205748] clk_branch2_enable+0x3c/0x60 [ 3.209869] clk_core_enable+0x78/0x220 [ 3.213809] clk_enable+0x38/0x60 [ 3.217219] dsi_phy_enable_resource+0x98/0xac [msm] [ 3.222387] dsi_phy_driver_probe+0x29c/0x4f8 [msm] [ 3.227453] platform_probe+0x74/0xe4 [ 3.231218] really_probe.part.0+0xa4/0x328 [ 3.235512] __driver_probe_device+0xa0/0x150 [ 3.239990] driver_probe_device+0x4c/0x164 [ 3.244285] __device_attach_driver+0xc0/0x128 [ 3.248850] bus_for_each_drv+0x84/0xe0 [ 3.252788] __device_attach+0xe0/0x188 [ 3.256727] device_initial_probe+0x20/0x2c [ 3.261020] bus_probe_device+0xa8/0xbc [ 3.264958] deferred_probe_work_func+0x90/0xc8 [ 3.269609] process_one_work+0x1f4/0x43c [ 3.273734] worker_thread+0x78/0x4f0 [ 3.277500] kthread+0x154/0x160 [ 3.280813] ret_from_fork+0x10/0x20 [ 3.284482] ---[ end trace 734ed75908fc6b0e ]--- Best, Katherine Katherine Perez (4): arm64: dts: qcom: sm8150: add dispcc node arm64: dts: qcom: sm8150: add display nodes arm64: dts: qcom: sm8150: add DSI display nodes arm64: dts: qcom: sm8150: display support for Microsoft Surface Duo .../dts/qcom/sm8150-microsoft-surface-duo.dts | 26 ++ arch/arm64/boot/dts/qcom/sm8150.dtsi | 292 ++++++++++++++++++ 2 files changed, 318 insertions(+) -- 2.31.1
