Add rk3066 ADC and USB support.
The Rockchip SoC rk3066 has no support for MMC and USB in the BootROM. The TPL/SPL parts are mostly stored on NAND. With U-boot stored on an external media the moment a user wants to start a recovery action it has to be done in SPL. Some boards only have one ADC switch for the user and no serial console. The U-boot USB drivers only works in combination with OF_REAL enabled.
For current ARM SoCs the FDT stored in BBS is erased after SPL relocation in the crt0.S main function. So for drivers to work in SPL, FDT is move to the end of DRAM. The global_data must update there pointers. The common Rockchip functions must also become available in SPL.
Most work has to be done on the ADC driver that has recently had a "upgrade" for a vref regulator. For Rockchip this regulator are mostly fixed. As we are in SPL that would introduce 2 extra U-boot classes UCLASS_REGULATOR and UCLASS_GPIO. In SPL there's no pin control yet, so reduce code and read these ADC properties from the DT in SPL. While testing some improvement had to be made for reliability. Fixup SPL compile and the way the ADC section is shown in U-boot's main menu.
Add a __weak recovery button function as condition to enter the recovery mode in spl. It then looks for a boot_device to select a storage function method. And finally run the rockusb gadget while connected to a USB host.
Enable all new futures by adding them to the mk808_defconfig.
Johan Jonker (16): rockchip: spl: fix reloc gd and FDT blob pointer rockchip: spl: allow more boot devices rockchip: spl-boot-order: add usb boot option rockchip: board: allow spl compile for usb init functions rockchip: usb: gadget: rockusb: enable spl compile rockchip: configs: mk808: add spl usb configs arm: dts: rockchip: mk808: add adc usb required properties for spl rockchip: adc: enable spl compile class driver rockchip: adc: reduce error notifications from class driver rockchip: adc: enable spl compile rockchip-saradc driver rockchip: adc: fix adc timer rockchip: adc: fix the hangups rockchip: adc: make adc branch compile in SPL rockchip: adc: move config items in a sub menu rockchip: rk3066: add recovery mode in spl rockchip: configs: mk808: enable usb support
Paweł Jarosz (1): rockchip: rk3066: config nand data pins in spl
arch/arm/dts/rk3066a-mk808-u-boot.dtsi | 29 ++++++ .../arm/include/asm/arch-rockchip/f_rockusb.h | 1 + arch/arm/mach-rockchip/Makefile | 3 +- arch/arm/mach-rockchip/rk3066/rk3066.c | 93 ++++++++++++++++++- arch/arm/mach-rockchip/sdram.c | 1 + arch/arm/mach-rockchip/spl-boot-order.c | 3 + arch/arm/mach-rockchip/spl.c | 21 ++++- configs/mk808_defconfig | 21 ++++- drivers/Makefile | 3 +- drivers/adc/Kconfig | 33 +++++++ drivers/adc/Makefile | 4 +- drivers/adc/adc-uclass.c | 47 +++++++--- drivers/adc/rockchip-saradc.c | 71 ++++++++++---- drivers/usb/gadget/Kconfig | 10 ++ drivers/usb/gadget/Makefile | 2 +- include/configs/mk808.h | 3 + 16 files changed, 308 insertions(+), 37 deletions(-)