sunxi: Add generic defconfigs for A23 Q8 tablets with 800x480 LCD

The 7" Q8 tablet enclosure is used for a ton of slightly different cheap
chinese tablets. There are some differences in which accelerometer /
wifi is used, but other then that these are all the same from a u-boot /
kernel pov.

When we get to adding accelerometer support the plan is to add some kind
of autodetection and mangle the dt accordingly (likely using the new quirks
mechanism).

For now this is a non issue as we do not yet have accelerometer
support, and in the future, some sort of auto-detect is the way to go
as we cannot expect users to exactly know what is inside their tablet.

The dts files this commit adds are identical to the ones submitted
to the upstream kernel.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
diff --git a/configs/q8_a23_tablet_800x480_defconfig b/configs/q8_a23_tablet_800x480_defconfig
new file mode 100644
index 0000000..3a3afa5
--- /dev/null
+++ b/configs/q8_a23_tablet_800x480_defconfig
@@ -0,0 +1,25 @@
+CONFIG_ARM=y
+CONFIG_ARCH_SUNXI=y
+CONFIG_MACH_SUN8I_A23=y
+CONFIG_DRAM_CLK=432
+CONFIG_DRAM_ZQ=63306
+CONFIG_MMC0_CD_PIN="PB4"
+CONFIG_USB0_VBUS_PIN="AXP0-VBUS-ENABLE"
+CONFIG_USB0_VBUS_DET="AXP0-VBUS-DETECT"
+CONFIG_USB0_ID_DET="PH8"
+CONFIG_AXP_GPIO=y
+CONFIG_VIDEO_LCD_MODE="x:800,y:480,depth:18,pclk_khz:33000,le:36,ri:210,up:18,lo:22,hs:10,vs:5,sync:3,vmode:0"
+CONFIG_VIDEO_LCD_DCLK_PHASE=0
+CONFIG_VIDEO_LCD_POWER="PH7"
+CONFIG_VIDEO_LCD_BL_EN="PH6"
+CONFIG_VIDEO_LCD_BL_PWM="PH0"
+CONFIG_DEFAULT_DEVICE_TREE="sun8i-a23-q8-tablet"
+# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
+CONFIG_SPL=y
+CONFIG_SYS_EXTRA_OPTIONS="CONS_INDEX=5"
+# CONFIG_CMD_IMLS is not set
+# CONFIG_CMD_FLASH is not set
+# CONFIG_CMD_FPGA is not set
+CONFIG_AXP221_DLDO1_VOLT=3300
+CONFIG_AXP221_ALDO1_VOLT=3000
+CONFIG_USB_MUSB_HOST=y