08:30 <rah> does any of the hardware in the mt8195/mt8395 Kompanio/Genio 1200 require firmware blobs to be loaded in order to operate?

08:52 <wens_> yes?

08:54 <rah> :-(

08:54 <rah> wens: what hardware?

08:55 <rah> or are you just guessing?

09:15 <wens> video encoder / decoder for one

09:29 <rah> that's fine, I don't need that; anything else?

09:34 <granquet> IIRC, the scp and wifi/bt

09:36 <rah> what's the scp?

09:37 <rah> and yes, sorry, I'd have presumed wifi needed firmware, as it's not an ath9k :-)

09:39 <wens> scp is an embedded MCU. it drives the video stuff

09:41 <rah> oh :-(

09:44 <rah> is this what you mean? https://developer.arm.com/documentation/dui0922/g/introduction/the-system-control-processor

09:46 <rah> ah, it looks like the source code for that is available: https://github.com/ARM-software/SCP-firmware

09:46 <rah> I should have been more specific :-)

09:46 <rah> does any of the hardware in the mt8195/mt8395 Kompanio/Genio 1200 require proprietary firmware blobs to be loaded in order to operate?

09:47 <rah> (apart from the video encoder/decoder and any wifi radios)

10:07 <granquet> not sure this is the same SCP, anyway I wouldn't trust mediatek to use an opensource firmware without modifications :)

10:09 <rah> and the source for their SCP firmware isn't available?

10:17 <rah> https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/mediatek/mt8195

10:17 <rah> argh

10:17 <rah> that puts paid to that :-/

10:20 <rah> I wanted to use the Genio 1200 with Mali G57 MC5 over the less powerful Rockchip RK3576 with Mali G52 MC3

10:22 <rah> hmm

10:22 <rah> "System Control Processor is an RISC-V processor in MediaTek MT8195 SoC.

10:22 <rah> It supports vedio encode/decode and CrOS EC host command."

10:23 <rah> wens: is this the firmware you were referring to when you said video encoder/decoder?

10:24 <rah> I'm wondering what "CrOS EC host command" is and whether a system would be functional without this blob being loaded?

10:36 <rah> https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/mediatek/mt8195/scp.img?id=10612bd12e4778069aff50caad9431002f92e374 <- source of that quote

11:12 <rah> kholk: ping?

13:03 <wens> It will

13:04 <wens> there's also some SPM firmware that I don't know how it gets loaded on the Genio 1200

13:54 <rah> I've been emailing kholk and they said the system will run OK without the SCP firmware blob but alas, there's a DDR training blob in the bootloader which is required :-/

14:11 <wens> yup

15:33 <adomerle> rah: Actually SCP (System Companion Processor) is not required. It is responsible for polling sensors in suspend mode to wake up the AP CPU. On MediaTek, SPM is responsible for power management, this is also a separate co-processor on a custom architecture. Its firmware is built directly into u-boot. It is responsible for power domains and much more (including lpddr training). TrustZone relies entirely on it and SMP (psci) will not work without...

15:33 <adomerle> ... it.