upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/configs/Yones_Toptech_BD1078_defconfig

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# The Yones Toptech BD1078 is an A20 based 10" tablet with a 1024x600 lcd
# screen, volume up/down and back buttons, headphones jack, mini hdmi, micro
# usb (otg), micro usb (host), external micro-sd slot and a separate internal
# micro-sd slot.
#
# Also see: http://linux-sunxi.org/Yones_Toptech_BD1078
CONFIG_SPL=y
CONFIG_SYS_EXTRA_OPTIONS="AXP209_POWER"
CONFIG_DEFAULT_DEVICE_TREE="sun7i-a20-yones-toptech-bd1078"
CONFIG_MMC_SUNXI_SLOT_EXTRA=1
CONFIG_MMC0_CD_PIN="PH1"
CONFIG_MMC1_CD_PIN="PH2"
CONFIG_MMC1_PINS="PH"
CONFIG_USB_MUSB_SUNXI=y
CONFIG_USB0_VBUS_PIN="PB9"
CONFIG_USB0_VBUS_DET="AXP0-VBUS-DETECT"
CONFIG_AXP_GPIO=y
CONFIG_VIDEO_LCD_MODE="x:1024,y:600,depth:24,pclk_khz:63000,le:32,ri:287,up:22,lo:12,hs:1,vs:1,sync:3,vmode:0"
CONFIG_VIDEO_LCD_DCLK_PHASE=0
CONFIG_VIDEO_LCD_PANEL_LVDS=y
CONFIG_VIDEO_LCD_POWER="PH8"
CONFIG_VIDEO_LCD_BL_EN="PH7"
CONFIG_VIDEO_LCD_BL_PWM="PB2"
CONFIG_VIDEO_LCD_BL_PWM_ACTIVE_LOW=n
CONFIG_ARM=y
CONFIG_ARCH_SUNXI=y
CONFIG_MACH_SUN7I=y
CONFIG_DRAM_CLK=408
CONFIG_DRAM_ZQ=127
CONFIG_DRAM_EMR1=4