Hi,
I have rebase my kernel on latest 5.2-rc2, and my panfrost driver is no more probing.
The issue is coming from f3617b449d0bcf3b5d80a97f51498dcf7463cf7e drm/panfrost: Select devfreq
Currently, there is some logic for the driver to work without devfreq. However, the driver actually fails to probe if !CONFIG_PM_DEVFREQ.
Fix this by selecting devfreq, and drop the additional checks for devfreq.
It seems that with this commit the OPP table is now mandatory. is it intentional?
Actually [ 3.046237] panfrost 1800000.gpu: clock rate = 432000000 [ 3.051593] panfrost 1800000.gpu: bus_clock rate = 100000000 [ 3.096012] panfrost 1800000.gpu: mali-t720 id 0x720 major 0x1 minor 0x1 status 0x0 [ 3.103682] panfrost 1800000.gpu: features: 00000000,10309e40, issues: 00000000,21054400 [ 3.111789] panfrost 1800000.gpu: Features: L2:0x07110206 Shader:0x00000000 Tiler:0x00000809 Mem:0x1 MMU:0x00002821 AS:0xf JS:0x7 [ 3.123435] panfrost 1800000.gpu: shader_present=0x3 l2_present=0x1 [ 3.130405] panfrost 1800000.gpu: Fatal error during devfreq init
With commit reverted [ 3.038236] panfrost 1800000.gpu: clock rate = 432000000 [ 3.043593] panfrost 1800000.gpu: bus_clock rate = 100000000 [ 3.087994] panfrost 1800000.gpu: mali-t720 id 0x720 major 0x1 minor 0x1 status 0x0 [ 3.095658] panfrost 1800000.gpu: features: 00000000,10309e40, issues: 00000000,21054400 [ 3.103763] panfrost 1800000.gpu: Features: L2:0x07110206 Shader:0x00000000 Tiler:0x00000809 Mem:0x1 MMU:0x00002821 AS:0xf JS:0x7 [ 3.115410] panfrost 1800000.gpu: shader_present=0x3 l2_present=0x1 [ 3.122798] [drm] Initialized panfrost 1.0.0 20180908 for 1800000.gpu on minor 0
Thanks, Clément