Add esp32c6 power manager feature

[FelipeMdeO]

I want apply power manager to esp32c6. Try activate it in the menu config I'm facing build issue:

riscv-none-elf-ld: warning: /home/felipe-moura/nuttxspace/nuttx/nuttx has a LOAD segment with RWX permissions riscv-none-elf-ld: /home/felipe-moura/nuttxspace/nuttx/staging/libarch.a(riscv_initialize.o): in function up_initialize: riscv_initialize.c:(.text.up_initialize+0x4): undefined reference to riscv_pminitialize make[1]: *** [Makefile:189: nuttx] Error 1 make: *** [tools/Unix.mk:546: nuttx] Error 2

Looking in the code I was able to see that the esp32c3 can build. It's happen because esp32c3 has a file with "function implementation":

I want enable this feature to esp32c6, but I am confusing about the code development process. Esp32c3 has a folder called esp32c3-legacy, inside it be function void riscv_pminitialize(void), this the right way to organize thinks, I mean, this function is common to esp32c3 and c6, so it can be available in an same file, for example esp32_pminitialize.c link in xtensa arquitecture.

[eren-terzioglu]

Hello,

esp32c3-legacy approach is in maintenence mode. Currently we are adding driver support for our risc-v devices under arch/risc-v/src/common/espressif folder. This is a common folder for esp32c3, esp32c6 and esp32h2. We don't have any support for PM for our common approach so there is no way to use it right now.

[FelipeMdeO]

Hello @eren-terzioglu ,

Can I help to add driver support for risc-v devices? Do you have an specific topic or email thread about it ?

[eren-terzioglu]

NuttX is an open source project. If you want to add a support for our devices, of course you can. Just you need to do is open a pull request to this repository.