#linux-sunxi on 2021-07-31 — irc logs at oftc.irclog.whitequark.org

2021-07-26 22:56 ChanServ changed the topic of #linux-sunxi to: Allwinner/sunxi development - Did you try looking at our wiki? https://linux-sunxi.org - Don't ask to ask. Just ask and wait for an answer! - This channel is logged at https://oftc.irclog.whitequark.org/linux-sunxi

00:01 <apritzel> nevermind, MoeIcenowy indeed mentions this later in the TF-A series ...

01:05 <smaeul> apritzel: the xtensa is intended to be the management core

01:07 <apritzel> smaeul: the DSP? wow ...

01:09 <smaeul> yes, see drivers/dsp/sun50iw11/dsp_i.h in https://dl.linux-sunxi.org/R329/SDK/projects/lichee/brandy-2.0/u-boot-2018.git

01:13 <smaeul> the DSP's IRAM/DRAM is separate from SRAM A2, and the DSP reset vector is programmable, so there's no conflict with reserving part of SRAM A2 for SPL/TF-A

01:13 <apritzel> I guess it would be too sensible to just slap some small RV32E on the die for that purpose ...

01:16 <smaeul> I don't know anything about the NPU or what memory it uses

01:25 <smaeul> yeah, I wouldn't mind at all replacing the AR100 with something RISC-V

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15:17 <MoeIcenowy> smaeul: the NPU just consumes DRAM

15:20 <MoeIcenowy> apritzel: as I know, Allwinner utilizes the DSP as management core, intends to support wake up from anything that a DSP can handle

15:20 <MoeIcenowy> especially sound

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