Panfrost impossible to probe without opp table

[Clément Péron]

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