This is really more of a feature request than a bug report, but I
couldn't find a better place or tag to file this. So my apologies if
this isn't the right way of requesting this.
For a way to reproduce this: Without ARCH_SUNXI a kernel does not contain the
pinctrl and clock drivers crucial for any kind of I/O. The only thing that
should work is "earlycon=uart,mmio32,0x1c28000".
Enabling ARCH_SUNXI should make the proper UART driver work, so
"console=ttyS0,115200" would give any output. Enabling the other symbols
mentioned above allow mass storage via uSD card and USB.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1701137
Title:
enable ARCH_SUNXI (and friends) in arm64 kernel .config
Status in linux package in Ubuntu:
Confirmed
Bug description:
The mainline support for the ARM64 Allwinner SoCs (featured on the Pine64
boards and the Pinebook notebook, for instance, as well as other development
boards like the BananaPi-M64) has come a long way by now, since 4.11 we have
MMC and USB support working.
Now can we just enable the proper .config bits to make the official Ubuntu
kernel support those boards? The latest mainline U-Boot can load an EFI grub
from some UEFI ESP partition, so any standard EFI installer should work.
Apart from some minor hiccup (a missing MBR bootable flag/MBR at all) this
works already with the Debian-testing netinst installer.
The config symbols needed for decent support are (all enabled by the latest
Debian kernel and the official mainline defconfig):
ARCH_SUNXI=y
CONFIG_USB_MUSB_SUNXI=m
CONFIG_MMC_SUNXI=m
CONFIG_RTC_DRV_SUN6I=y
CONFIG_PHY_SUN4I_USB=y
Those enable MMC and USB (the mandatory clocks, pinctrl and UART are enabled
by default) and make those boards quite usable already. The on-SoC Ethernet
driver will probably be merged into 4.13-rc1.
Optionally:
CONFIG_I2C_MV64XXX=m
CONFIG_SPI_SUN6I=m
give us I2C and SPI support as well.
So can we add those symbols to the Ubuntu kernel .config to give users
an out-of-the-box experience?
Cheers,
Andre.
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