On 01:05 Thu 17 Apr , Andre Przywara wrote: > Some boards with Allwinner SoCs feature a "FEL" key, sometimes also > labelled "uboot", which allows to easily enter the BootROM FEL mode, when > pressed upon power-on or reset. This allows to access the USB-OTG boot > protocol, for convenient access to memory and uploading code. > > Add a software emulation of this functionality for boards without a button > connected to this special SoC pin, to give easy FEL access to more > boards. Any GPIO can be used, as long as the button uses active-low > logic. > > This is used on the X96 Mate TV box, where the hidden "update" button is > actually just some GPIO, checked by the vendor firmware. > > Please have a look! > for the series
Tested-by: Yixun Lan <d...@gentoo.org> # On A527 SoC Reviewed-by: Yixun Lan <d...@gentoo.org> > Cheers, > Andre > > Changelog v1 .. v2: > - add patch to fix return_to_fel() prototype > - document signal needs to be active-low > - activate internal pull-up resistors > - add patch to activate button on the X96 Mate TV box > > Andre Przywara (3): > sunxi: fix return_to_fel() prototype > sunxi: add "fake" FEL pin support > sunxi: x96_mate: Add "fake" FEL key definition > > arch/arm/include/asm/arch-sunxi/sys_proto.h | 4 +-- > arch/arm/mach-sunxi/Kconfig | 10 +++++++ > arch/arm/mach-sunxi/board.c | 31 +++++++++++++++++++++ > configs/x96_mate_defconfig | 1 + > 4 files changed, 44 insertions(+), 2 deletions(-) > > -- > 2.46.3 > -- Yixun Lan (dlan)
