lanefu changed the topic of #armbian-rockchip to: Armbian - Linux for ARM development boards | Rockchip SoC | www.armbian.com | This channel is relayed to the equivalent Discord channel | this channel is logged
<DC-IRC> [Discord] <catloaf0> Hello guys. I recently got an acer chromebook tab 10 with a rk3399 processor. Its currently running pmos which works quite well, except that there is not hardware video decode support in its chromium / firefox package. I might try to run armbian by just using its rootfs with the pmos kernel, but if anyone could help me get it working on pmos that would be great too
<DC-IRC> [Discord] <amazingfate> chromium v132 should support vpu decoding out of box
<DC-IRC> [Discord] <stonededge> Anyone have any idea why one of my RK3588 would run the big cores at max 2.35GHz, whilst the other runs at 2.3?
<DC-IRC> [Discord] <stonededge> The software running on the two boards is identical. I thought these would be taken from the freq/opp tables from the device tree
<DC-IRC> [Discord] <stonededge> I’d like to bring them down to 2.3GHz, just wondering how 🙂
<DC-IRC> [Discord] <runaway97> its called pvtm
<DC-IRC> [Discord] <runaway97> some rk3588's can clock faster than others due to silicon variance
<DC-IRC> [Discord] <stonededge> Right. But is there a way to set max freq?
<DC-IRC> [Discord] <runaway97> yes. lower the voltage in the opp table
<DC-IRC> [Discord] <stonededge> Yeah, isn’t the opp table set in the device tree? The software across the two devices is identical, same as the device tree
<DC-IRC> [Discord] <runaway97> yes, and as i ve said those are just targets
<DC-IRC> [Discord] <runaway97> actual clocks will vary per silicon quality
<DC-IRC> [Discord] <runaway97> for a voltage X, two different chips can run at different clock rates
<DC-IRC> [Discord] <runaway97> so the solution is to lower the voltage where the clock is higher
<DC-IRC> [Discord] <runaway97> or the other way around if you want a higher clock