On Thursday, 4 July 2024 12:00:43 CEST Heiko Stübner wrote: > > Is it possible to probe for those avdd_0v9 and avdd_1v8 regulators only on > > devices that should have them? > > > > On a Rock64 (rk3328), but probably for all VOP1 devices, they're not > > present and that results in the following warnings: > > dwhdmi-rockchip ff3c0000.hdmi: supply avdd-0v9 not found, using dummy > > regulator dwhdmi-rockchip ff3c0000.hdmi: supply avdd-1v8 not found, using > > dummy regulator > counter-argument, why not define them in the dts? > I.e. looking at the rock64 schematics, you want the dvideo_avdd_1v8 (from > LDO1) and dvideo_avdd_1v0 (from LDO3) if I'm not mistaken. Why this stuff > is called dvideo and not hdmi in there I have no clue ;-) That appears to be a valid counter-argument ... On donderdag 4 juli 2024 12:28:53 CEST Alex Bee wrote: > Those regulators exist for _all_ RK SoCs that use dw-hdmi controller, as it > has to be supplied in same why (as it is always the same controller). In > particular case of rock64[0] its: > > DVIDEO_AVDD_1V8P6 -> VCC_18 > DVIDEO_AVDD_1V0M6 -> VDD_10 > > So: Just fix the device tree and your warnings are gone :) > > [0] https://files.pine64.org/doc/rock64/ROCK64_Schematic_v2.0_20171019.pdf ... confirmed by Alex Bee. I do wonder about 0.9V vs 1.0V, but I'll bug someone else about that ;-) Cheers, Diederik
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