Tony, On 11/12/2018 9.11, Peter Ujfalusi wrote: > Tony, > > On 10/12/2018 19.23, Tony Lindgren wrote: >> * Peter Ujfalusi <peter.ujfalusi@xxxxxx> [181210 17:00]: >>> On 10/12/2018 18.38, Tony Lindgren wrote: >>>> OK so to prevent the hwmod code from resetting gpios very >>>> early, this now might become necessary. Care to try with >>>> this also applied? >>> >>> With this applied there is life on the console, however it ends up badly: >> >> OK thanks for testing. I'll take a look on how to skip >> early reset for omap_hwmod.c for the dts case instead of >> dropping the sysc platform data. >> >> For the LCDC, does the following revert fix it? If so, >> I need to check the flags for am33xx_lcdc_hwmod >> HWMOD_SWSUP_SIDLE | HWMOD_SWSUP_MSTANDBY. > > Unfortunately, not :( > > I have applied the two patch you have sent, plus this (next-20181210): > [ 3.481142] OF: graph: no port node found in /ocp/lcdc@4830e000 > [ 3.487627] OF: graph: no port node found in /ocp/lcdc@4830e000 > [ 3.494810] Unable to handle kernel NULL pointer dereference at virtual address 00000000 > [ 3.503182] pgd = (ptrval) > [ 3.505957] [00000000] *pgd=00000000 > [ 3.509645] Internal error: Oops: 5 [#1] PREEMPT SMP ARM > [ 3.514986] Modules linked in: > [ 3.518068] CPU: 0 PID: 66 Comm: kworker/0:3 Not tainted 4.20.0-rc6-next-20181210-00104-g77bc75e7d444 #277 > [ 3.527763] Hardware name: Generic AM33XX (Flattened Device Tree) > [ 3.533906] Workqueue: events dbs_work_handler > [ 3.538393] PC is at tilcdc_crtc_update_clk+0xc/0x98 > [ 3.543387] LR is at cpufreq_transition+0x1c/0x24 > [ 3.548112] pc : [<c057e524>] lr : [<c057fd50>] psr: 60000013 > [ 3.554408] sp : cf5e5e20 ip : 0ee06000 fp : 00000000 > [ 3.559655] r10: ffffffff r9 : cf5e5ebc r8 : 00000000 > [ 3.564904] r7 : 00000001 r6 : cf5e5ebc r5 : 00000000 r4 : 00000000 > [ 3.571461] r3 : c057fd34 r2 : cf5e5ebc r1 : 00000001 r0 : 00000000 > [ 3.578020] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none > [ 3.585188] Control: 10c5387d Table: 80004019 DAC: 00000051 > [ 3.590961] Process kworker/0:3 (pid: 66, stack limit = 0x(ptrval)) > [ 3.597257] Stack: (0xcf5e5e20 to 0xcf5e6000) > [ 3.601641] 5e20: 00000000 fffffffe cf5e5ebc 00000001 00000000 c057fd50 00000000 c01555d8 > [ 3.609862] 5e40: c0e6a26c c0e6a258 00000000 00000000 00000001 c015599c 00000000 c06e5548 > [ 3.618082] 5e60: cf5e5ebc cf5c3a00 c0e09264 c0e6a258 00000003 00000000 000afc80 c01559d0 > [ 3.626303] 5e80: 00000000 000afc80 cf5c3a00 c06e9994 cf5c3a00 cf5e5ebc 00000000 c0eae910 > [ 3.634523] 5ea0: 00000003 c06e9a64 cf5c3a00 00000000 c0e09108 c06e9f94 cf5e1900 00000000 > [ 3.642745] 5ec0: 000927c0 000afc80 00000021 71a56597 cf159688 cf5c3a00 cf5e1900 cf5d9a80 > [ 3.650966] 5ee0: cf5d9a80 cf5e1880 cf5e1880 cf5e193c ffffe000 c06ed2c8 cf5e1938 cf5de080 > [ 3.659187] 5f00: cf5e1904 cf5c3a00 c0e6a5d4 00000000 cf5e193c c06edd80 cf5e1938 cf5de080 > [ 3.667408] 5f20: cfb69ec0 cfb6d000 00000000 c014e284 00000008 cfb69ed8 cf5de080 cf5de094 > [ 3.675628] 5f40: cfb69ec0 00000008 cfb69ed8 c0e03d00 cfb69ec0 c014ef74 cf5dd000 cf5d9fc0 > [ 3.683849] 5f60: ffffe000 00000000 cf5dd000 cf5d9fc0 cf5e4000 cf5de080 c014ef48 cf05feac > [ 3.692069] 5f80: cf5dd01c c0153d40 00000000 cf5d9fc0 c0153c10 00000000 00000000 00000000 > [ 3.700289] 5fa0: 00000000 00000000 00000000 c01010e8 00000000 00000000 00000000 00000000 > [ 3.708509] 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 > [ 3.716730] 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000 > [ 3.724969] [<c057e524>] (tilcdc_crtc_update_clk) from [<c057fd50>] (cpufreq_transition+0x1c/0x24) > [ 3.733986] [<c057fd50>] (cpufreq_transition) from [<c01555d8>] (notifier_call_chain+0x48/0x80) > [ 3.742734] [<c01555d8>] (notifier_call_chain) from [<c015599c>] (__srcu_notifier_call_chain+0x44/0x60) > [ 3.752178] [<c015599c>] (__srcu_notifier_call_chain) from [<c01559d0>] (srcu_notifier_call_chain+0x18/0x20) > [ 3.762067] [<c01559d0>] (srcu_notifier_call_chain) from [<c06e9994>] (cpufreq_notify_transition+0x64/0x110) > [ 3.771949] [<c06e9994>] (cpufreq_notify_transition) from [<c06e9a64>] (cpufreq_freq_transition_end+0x24/0x90) > [ 3.782003] [<c06e9a64>] (cpufreq_freq_transition_end) from [<c06e9f94>] (__cpufreq_driver_target+0x1b8/0x514) > [ 3.792059] [<c06e9f94>] (__cpufreq_driver_target) from [<c06ed2c8>] (od_dbs_update+0x130/0x15c) > [ 3.800892] [<c06ed2c8>] (od_dbs_update) from [<c06edd80>] (dbs_work_handler+0x28/0x58) > [ 3.808941] [<c06edd80>] (dbs_work_handler) from [<c014e284>] (process_one_work+0x1e4/0x3f4) > [ 3.817424] [<c014e284>] (process_one_work) from [<c014ef74>] (worker_thread+0x2c/0x574) > [ 3.825564] [<c014ef74>] (worker_thread) from [<c0153d40>] (kthread+0x130/0x148) > [ 3.833004] [<c0153d40>] (kthread) from [<c01010e8>] (ret_from_fork+0x14/0x2c) > [ 3.840259] Exception stack(0xcf5e5fb0 to 0xcf5e5ff8) > [ 3.845335] 5fa0: 00000000 00000000 00000000 00000000 > [ 3.853555] 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 > [ 3.861773] 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 > [ 3.868428] Code: e12fff1e e92d41f0 e1a04000 e1a05000 (e4946014) > [ 3.874674] ---[ end trace d8042f7454b3c9d1 ]--- > [ 3.883368] mmc1: new SDIO card at address 0001 > [ 3.889008] OF: graph: no port node found in /ocp/lcdc@4830e000 > [ 3.895127] tilcdc 4830e000.lcdc: no encoders/connectors found It looks like there is a bug in tilcdc as well, but the display is not coming up because the backlight is not proping: [ 0.618627] ecap 48304000.epwmss:ecap@48304100: invalid resource [ 0.618822] ecap: probe of 48304000.epwmss:ecap@48304100 failed with error 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