riscv defconfig starfive visionfive2 env is nowhere, missing axp15060 regulator, misc vendor hacks for Milk-V Mars CM Lite

[E Shattow]

Aside: Mailing list archive mangles devicetree node names in the patch as
if it were an email address to obscure.

related linux dts axp15060 node naming updates:
https://github.com/MichaIng/linux/commit/1419a6eeb6a8b834ce9631fc558a57fb634f6949

GMAC and eMMC functions depend on power regulation.

The sus commit for ENV_IS_NOWHERE=y in the starfive_visionfive2 defconfig:
https://github.com/u-boot/u-boot/commit/7d79bed00c9e02187a09e74e90c5bd5a927a6a61

Why should ENV_IS_NOWHERE=y and CONFIG_ENV_IS_IN_SPI_FLASH=y both survive a
make oldconfig, I would think they will be mutually exclusive. Local
testing make starfive_visionfive2, disable ENV_IS_NOWHERE, compile and
flash to the board and saveenv works as expected.

On Fri, Jan 26, 2024 at 4:19 AM Nam Cao <namcao at linutronix.de> wrote:

> On Fri, 26 Jan 2024 02:53:45 -0800 E Shattow <lucent at gmail.com> wrote:
> > There is missing the AXP15060 power regulation in u-boot needed for
> SDCard
> > and networking. As it is happens to work for some variants and not
> others,
> > and not always. The AXP15060 driver exists in mainline Linux as a variant
> > of AXP20x and there are corresponding devicetree entries of the StarFive
> > JH7110-based VisionFive2 variants queued up (ref: *1 Patchwork series
> > 806238).
>
> I sent a patch to add AXP15060 power regulation device tree node:
> https://lists.denx.de/pipermail/u-boot/2024-January/543614.html
>
> However, I sent it because it is needed by OpenSBI to reboot/shutdown. I
> was not aware that U-Boot also needs this.
>
> Best regards,
> Nam
>
>