Hi, On Thu, May 11, 2017 at 02:45:11PM -0700, Bim Overbohm wrote: > Hi All, > > I had a similar problem running a mainline 4.11 kernel on an A33 tablet > (marked "Q8-2.4G 20140918". It came from a company called Trimeo and is > simply called 7". It contains an APX223 power controller, RTL8189ETV WiFi > controller, 2x Nanya NT5CB128M15FP-DY DRAM chips (2x256MB), a Hynix > H27UCG8T2BTR-BC NAND-flash chip and a Goodix GT818 touch controller. > Display resolution is 1024x600). The self-compiled u-boot dtb would > initialize the USB, but the kernel dtb would not work. U-Boot doesn't use the DT for this USB setup. > The kernel messages were something along the lines of "[ 9.366994] > sun4i-usb-phy 1c19400.phy: could not find pctldev for node > /soc@01c00000/pinctrl@01c20800/usb0_id_detect_pin@0, deferring > probe". That's not likely to be your issue. The probe should be deferred, and reattempted later. > I found no way to activate the pinctrl devices, so I fixed this by > decompiling the dts, removing all the USB id detect pin and vbus > settings and recompiling the dts (diff at end of message). The > device boots into LXDE now and I can use an USB keyboard and > mouse. I still have no WiFi though... > > Pastebin of unpatched dts file: https://pastebin.com/kL6WELuC > > A couple of questions: > > - Is there a proper way to make the pinctrls and OTG dual mode work > on the device?! I suspect they are needed to activate WiFi too... As I said, that's probably not your issue. Are you sure of your micro-USB cable? Is it setting the ID pin to the ground as it's supposed to? > - Is this a bug I should report for sunxi-next? sunxi-next is just a merge of various upstream branches. It doesn't make sense to report bugs there. You've found the right place already. > - Is there a driver for the GT818 in the mainline kernel or a way to > make that device work? It doesn't look like there is. > - Is there a driver for the RTL8189ETV in the mainline kernel or a way to > make that device work? https://linux-sunxi.org/Wifi#RTL8189ES_.2F_RTL8189ETV Maxime -- Maxime Ripard, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com
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