sunxi: Add softwinner astar mid756 A33 tablet board defconfig

The Astar MID756 is a 7" tablet using the A33 SoC with a 800x480 LCD screen,
512M RAM, 8G ROM and integrated sdio wifi.

Also see: http://linux-sunxi.org/Softwinner_astar-rda

Signed-off-by: Vishnu Patekar <vishnupatekar0510@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>

board/sunxi/MAINTAINERS

@@ -59,6 +59,11 @@ M:	Paul Kocialkowski <contact@paulk.fr>
 S:	Maintained
 F:	configs/Ampe_A76_defconfig
 
+Astar MID756 BOARD
+M:	VishnuPatekar <vishnupatekar0510@gmail.com>
+S:	Maintained
+F:	configs/Astar_MID756_defconfig
+
 COLOMBUS BOARD
 M:	Maxime Ripard <maxime.ripard@free-electrons.com>
 S:	Maintained

configs/Astar_MID756_defconfig

@@ -0,0 +1,25 @@
+# The Astar MID756 is a 7" tablet using the A33 SoC with a 800x480 LCD screen,
+# 512M RAM, 8G ROM and integrated sdio wifi.
+#
+# Also see: http://linux-sunxi.org/Softwinner_astar-rda
+CONFIG_SPL=y
+CONFIG_SYS_EXTRA_OPTIONS="CONS_INDEX=5"
+CONFIG_FDTFILE="sun8i-a33-astar-mid756.dtb"
+CONFIG_USB_MUSB_SUNXI=y
+CONFIG_USB0_VBUS_PIN="AXP0-VBUS-ENABLE"
+CONFIG_USB0_VBUS_DET="AXP0-VBUS-DETECT"
+CONFIG_VIDEO_LCD_MODE="x:800,y:480,depth:18,pclk_khz:33000,le:87,ri:168,up:31,lo:13,hs:1,vs:1,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_ARM=y
+CONFIG_ARCH_SUNXI=y
+CONFIG_MACH_SUN8I_A33=y
+CONFIG_DRAM_CLK=480
+# zq = 0x3bbb
+CONFIG_DRAM_ZQ=15291
+# Wifi power
+CONFIG_AXP221_DLDO1_VOLT=3300
+# aldo1 is connected to VCC-IO, VCC-PD, VCC-USB and VCC-HP
+CONFIG_AXP221_ALDO1_VOLT=3000