Hi Steven,
On Tue, 14 Apr 2020 at 15:10, Steven Price steven.price@arm.com wrote:
Hi Clément,
On 13/04/2020 18:28, Clément Péron wrote:
Hi Steven,
<snip>
Getting a backtrace from the two occurrences, I see one added from:
(debugfs_create_dir) from [<c04633f8>] (create_regulator+0xe0/0x220) (create_regulator) from [<c04681d8>] (_regulator_get+0x168/0x204) (_regulator_get) from [<c04682e0>] (regulator_bulk_get+0x64/0xf4) (regulator_bulk_get) from [<c04696f0>] (devm_regulator_bulk_get+0x40/0x74) (devm_regulator_bulk_get) from [<bf00af44>] (panfrost_device_init+0x1b4/0x48c [panfrost]) (panfrost_device_init [panfrost]) from [<bf00a4d4>] (panfrost_probe+0x94/0x184 [panfrost]) (panfrost_probe [panfrost]) from [<c04ee694>] (platform_drv_probe+0x48/0x94)
And the other:
(debugfs_create_dir) from [<c04633f8>] (create_regulator+0xe0/0x220) (create_regulator) from [<c04681d8>] (_regulator_get+0x168/0x204) (_regulator_get) from [<c05c1280>] (dev_pm_opp_set_regulators+0x6c/0x184) (dev_pm_opp_set_regulators) from [<bf00b4ac>] (panfrost_devfreq_init+0x38/0x1ac [panfrost]) (panfrost_devfreq_init [panfrost]) from [<bf00a508>] (panfrost_probe+0xc8/0x184 [panfrost]) (panfrost_probe [panfrost]) from [<c04ee694>] (platform_drv_probe+0x48/0x94)
Both are created at /regulator/vdd_gpu
I'm preparing a new version with some clean from lima devfreq. My working branch : https://github.com/clementperon/linux/commits/panfrost_devfreq
Two strange things I observe: - After 30sec the regulator is released by OPP ??? [ 33.757627] vdd-gpu: disabling Introduce the regulator support in this commit: https://github.com/clementperon/linux/commit/be310c37b82010e293b7f129ccdcb71...
- The Cooling map is not probe correctly : [ 2.545756] panfrost 1800000.gpu: [drm:panfrost_devfreq_init [panfrost]] Failed to register cooling device Introduce in this commit : https://github.com/clementperon/linux/commit/0252c38fd55ad78366ac4b1714e285c...
Do you have an hint about what I'm missing ?
Thanks for your help, Clement