On Sat, May 16, 2015 at 6:08 PM, Ian Campbell <[email protected]> wrote: > On Thu, 2015-05-14 at 14:10 +0800, Chen-Yu Tsai wrote: >> This is my attempt to support SMP and CPU hot plugging on the Allwinner >> A80 SoC. The A80 is a big.Little processor with 2 clusters of 4x Cortex-A7 >> and 4x Cortex-A15 cores. > > I thought there was a preference these days to support this sort of > thing via support PSCI in the firmware, which allows for other things > such as non-secure-world etc.
Ideally, yes. However, U-boot only has minimal A80 support for now. Also, multi-cluster support is not as simple as what we had for the A20. The kernel already has common multi-cluster code. With it we can do full SMP/hotplug support. Kernel code is also easier to write and debug than PSCI, which ATM is all per-platform assembly. Also, my A31 and A23 PSCI implementations still need some work. ChenYu -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
