On Mon, May 26, 2014 at 12:23:09PM +0800, Chen-Yu Tsai wrote: > On Mon, May 26, 2014 at 3:39 AM, Maxime Ripard > <maxime.ripard@xxxxxxxxxxxxxxxxxx> wrote: > > On Fri, May 23, 2014 at 03:51:25PM +0800, Chen-Yu Tsai wrote: > >> The Ippo-q8h is a tablet circiut board commonly found in cheap Android > >> tablets with A23 SoCs. There are at least 2 versions of the board, with > >> different peripherals, such as WiFi chips. > >> > >> This patch add supports for v5 of such boards, which has a ESP8089 WiFi > >> chip (not supported) connected to mmc1. > >> > >> Signed-off-by: Chen-Yu Tsai <wens@xxxxxxxx> > >> --- > >> arch/arm/boot/dts/Makefile | 2 ++ > >> arch/arm/boot/dts/sun8i-a23-ippo-q8h-v5.dts | 51 +++++++++++++++++++++++++++++ > >> 2 files changed, 53 insertions(+) > >> create mode 100644 arch/arm/boot/dts/sun8i-a23-ippo-q8h-v5.dts > >> > >> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile > >> index 6967393..f809a53 100644 > >> --- a/arch/arm/boot/dts/Makefile > >> +++ b/arch/arm/boot/dts/Makefile > >> @@ -354,6 +354,8 @@ dtb-$(CONFIG_MACH_SUN7I) += \ > >> sun7i-a20-cubietruck.dtb \ > >> sun7i-a20-i12-tvbox.dtb \ > >> sun7i-a20-olinuxino-micro.dtb > >> +dtb-$(CONFIG_MACH_SUN8I) += \ > >> + sun8i-a23-ippo-q8h-v5.dtb > >> dtb-$(CONFIG_ARCH_TEGRA) += tegra20-harmony.dtb \ > >> tegra20-iris-512.dtb \ > >> tegra20-medcom-wide.dtb \ > >> diff --git a/arch/arm/boot/dts/sun8i-a23-ippo-q8h-v5.dts b/arch/arm/boot/dts/sun8i-a23-ippo-q8h-v5.dts > >> new file mode 100644 > >> index 0000000..7d0bd97 > >> --- /dev/null > >> +++ b/arch/arm/boot/dts/sun8i-a23-ippo-q8h-v5.dts > >> @@ -0,0 +1,51 @@ > >> +/* > >> + * Copyright 2014 Chen-Yu Tsai > >> + * > >> + * Chen-Yu Tsai <wens@xxxxxxxx> > >> + * > >> + * The code contained herein is licensed under the GNU General Public > >> + * License. You may obtain a copy of the GNU General Public License > >> + * Version 2 or later at the following locations: > >> + * > >> + * http://www.opensource.org/licenses/gpl-license.html > >> + * http://www.gnu.org/copyleft/gpl.html > >> + */ > >> + > >> +/dts-v1/; > >> +/include/ "sun8i-a23.dtsi" > >> + > >> +/ { > >> + model = "Ippo Q8H Dual Core Tablet (v5)"; > >> + compatible = "ippo,q8h-v5", "allwinner,sun8i-a23"; > >> + > >> + chosen { > >> + bootargs = "earlyprintk console=ttyS0,115200"; > >> + }; > > > > You should probably add the memory node here too. > > OK. > > >> + > >> + soc@01c00000 { > >> + uart0: serial@01c28000 { > >> + pinctrl-names = "default"; > >> + pinctrl-0 = <&uart0_pins_a>; > >> + status = "okay"; > >> + }; > >> + > >> + i2c0: i2c@01c2ac00 { > >> + pinctrl-names = "default"; > >> + pinctrl-0 = <&i2c0_pins_a>; > >> + status = "okay"; > >> + }; > >> + > >> + i2c1: i2c@01c2b000 { > >> + pinctrl-names = "default"; > >> + pinctrl-0 = <&i2c1_pins_a>; > >> + status = "okay"; > >> + }; > > > > What are the two i2c busses wired to? > > i2c0 has the capacitive touch panel controller gsl1680 @ 0x40. > > i2c1 has something (gsensor maybe) connected @ 0x15. > The FEX file lists the gsensor on i2c1, but with the address as 0x18. > I may need to boot back to stock Android to figure it out. > > i2c2 has the camera sensor (GC0309) control connected to it @ 0x66. > I didn't list it because I overlooked it, and i2cdetect hangs. > It seems to need AXP PMIC support to activate the regulators. > > AFAIK, the kernel doesn't have drivers for these devices, > so how would we list them? We don't need to list them yet. We can just wait for the drivers, it was just out of curiosity. -- Maxime Ripard, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com
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