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>

4 files changed, 93 insertions, 1 deletions

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 6a11b12f27..65b42308f2 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -153,7 +153,8 @@ dtb-$(CONFIG_MACH_SUN8I_A23) += \
 	sun8i-a23-evb.dtb \
 	sun8i-a23-gt90h-v4.dtb \
 	sun8i-a23-ippo-q8h-v5.dtb \
-	sun8i-a23-ippo-q8h-v1.2.dtb
+	sun8i-a23-ippo-q8h-v1.2.dtb \
+	sun8i-a23-q8-tablet.dtb
 dtb-$(CONFIG_MACH_SUN8I_A33) += \
 	sun8i-a33-et-q8-v1.6.dtb \
 	sun8i-a33-ga10h-v1.1.dtb \
diff --git a/arch/arm/dts/sun8i-a23-q8-tablet.dts b/arch/arm/dts/sun8i-a23-q8-tablet.dts
new file mode 100644
index 0000000000..6062ea7a99
--- /dev/null
+++ b/arch/arm/dts/sun8i-a23-q8-tablet.dts
@@ -0,0 +1,65 @@
+/*
+ * Copyright 2015 Hans de Goede <hdegoede@redhat.com>
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ *  a) This file is free software; you can redistribute it and/or
+ *     modify it under the terms of the GNU General Public License as
+ *     published by the Free Software Foundation; either version 2 of the
+ *     License, or (at your option) any later version.
+ *
+ *     This file is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ * Or, alternatively,
+ *
+ *  b) Permission is hereby granted, free of charge, to any person
+ *     obtaining a copy of this software and associated documentation
+ *     files (the "Software"), to deal in the Software without
+ *     restriction, including without limitation the rights to use,
+ *     copy, modify, merge, publish, distribute, sublicense, and/or
+ *     sell copies of the Software, and to permit persons to whom the
+ *     Software is furnished to do so, subject to the following
+ *     conditions:
+ *
+ *     The above copyright notice and this permission notice shall be
+ *     included in all copies or substantial portions of the Software.
+ *
+ *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *     OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/dts-v1/;
+#include "sun8i-a23.dtsi"
+#include "sun8i-q8-common.dtsi"
+
+/ {
+	model = "Q8 A23 Tablet";
+	compatible = "allwinner,q8-a23", "allwinner,sun8i-a23";
+};
+
+/*
+ * FIXME for now we only support host mode and rely on u-boot to have
+ * turned on Vbus which is controlled by the axp223 pmic on the board.
+ *
+ * Once we have axp223 support we should switch to fully supporting otg.
+ */
+&usb_otg {
+	dr_mode = "host";
+	status = "okay";
+};
+
+&usbphy {
+	status = "okay";
+};
diff --git a/board/sunxi/MAINTAINERS b/board/sunxi/MAINTAINERS
index f7a837a6eb..67a9d294d2 100644
--- a/board/sunxi/MAINTAINERS
+++ b/board/sunxi/MAINTAINERS
@@ -50,6 +50,7 @@ F:	configs/ga10h_v1_1_defconfig
 F:	configs/gt90h_v4_defconfig
 F:	configs/Ippo_q8h_v1_2_defconfig
 F:	configs/Ippo_q8h_v1_2_a33_1024x600_defconfig
+F:	configs/q8_a23_tablet_800x480_defconfig
 F:	configs/q8_a33_tablet_800x480_defconfig
 F:	configs/q8_a33_tablet_1024x600_defconfig
 F:	include/configs/sun9i.h
diff --git a/configs/q8_a23_tablet_800x480_defconfig b/configs/q8_a23_tablet_800x480_defconfig
new file mode 100644
index 0000000000..3a3afa5daa
--- /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