Hi, (Please CC u-boot-amlo...@groups.io when U-Boot is concerned)
On 07/12/2020 13:19, Otto Meier wrote: > Hi Martin, > > > I did a lot of googling this weekend and found some interesting problems with > odroid-c2. > > 1. booting from emmc stop after u-boot 2020.04 (this hits me also) Indeed, this already has been reported, but the root cause is unknown > 2. usb did not work with newer kernels. > > This gaves me the idea that something in the configuration of the s905 soc > is not ok. > > here: > https://forum.libreelec.tv/thread/12330-balbes150-le-images-with-kodi-19-for-s9xxx/?postID=147212#post147212 > and here: https://lists.denx.de/pipermail/u-boot/2020-November/thread.html > > in https://groups.io/g/u-boot-amlogic/topic/77816805#661 some problems in > pinctrl related to booting from emmc is discussed. > > i found that commit dd5f2351e99aad8fcbedbc1305b8b51b09952336 of u-boot > rendered the situation for odroid-c2 bad. > > i gave the following patch on Top of commit > ee1e04558ff8c8ed812b986939447f129bb0b0bb of u-boot > a try ad it fixes the odroid-c2 boot issue. > > --- u-boot.git/arch/arm/dts/meson-gxbb.dtsi.orig 2020-11-27 > 17:20:04.624193561 +0100 > +++ u-boot.git/arch/arm/dts/meson-gxbb.dtsi 2020-11-27 17:23:18.472088934 > +0100 > @@ -403,36 +403,33 @@ > gpio-ranges = <&pinctrl_periphs 0 0 119>; > }; > > - emmc_pins: emmc { > - mux-0 { > - groups = "emmc_nand_d07", > - "emmc_cmd"; > - function = "emmc"; > - bias-pull-up; > - }; > > - mux-1 { > - groups = "emmc_clk"; > - function = "emmc"; > - bias-disable; > - }; > - }; > + emmc_pins: emmc { > + mux { > + groups = "emmc_nand_d07", > + "emmc_cmd", > + "emmc_clk"; > + function = "emmc"; > + }; > + }; > > - emmc_ds_pins: emmc-ds { > - mux { > - groups = "emmc_ds"; > - function = "emmc"; > - bias-pull-down; > - }; > - }; > + emmc_ds_pins: emmc-ds { > + mux { > + groups = "emmc_ds"; > + function = "emmc"; > + }; > + }; > > - emmc_clk_gate_pins: emmc_clk_gate { > - mux { > - groups = "BOOT_8"; > - function = "gpio_periphs"; > - bias-pull-down; > - }; > - }; > + emmc_clk_gate_pins: emmc_clk_gate { > + mux { > + groups = "BOOT_8"; > + function = "gpio_periphs"; > + }; > + cfg-pull-down { > + pins = "BOOT_8"; > + bias-pull-down; > + }; > + }; > > nor_pins: nor { > mux { > > > > So with the latest u-boot and the kernel from > https://github.com/chewitt/linux/tree/amlogic-5.10.y > commit 725fc8df7898102f9031ba2075f763884ffa3ee8 everything is working again. > USB does hotplugging as expected. So, this fixes USB under Linux ?? It's not clear Neil > > For me this make it work again. But i`m sorry, I don´t know what would be a > real fix. > > > > > > > Am 05.12.20 um 20:55 schrieb Martin Blumenstingl: >> Hi Otto, >> >> On Sat, Dec 5, 2020 at 6:40 PM Otto Meier <gf...@gmx.net> wrote: >>> >>> Hi Martin, >>> >>> i have tried your second notice. but it does'nt solve the issue. >>> if at leased on device is pluged in new devices are detected. if >>> all devices have been removed, no new device will be detected anymore. >> thanks for trying this out and for reporting back. >> can you please also test if running "lsusb -vvv" (as root) makes the >> devices show up? >> >> background info: the Amlogic Meson GXBB SoC on your Odroid-C2 board >> uses a "dwc2" USB 2.0 controller. >> I don't have any GXBB based board, but my Odroid-C1+ uses the same >> controller and overall setup. There I can reproduce the problem you >> are seeing. >> >> I am not sure which part of the "infrastructure" (on-board 4-port USB >> hub, dwc2 controller, ...) is causing this issue. >> My suggestion is to involve the linux-usb mailing list and dwc2 driver >> maintainer: >> - Minas Harutyunyan <hmi...@synopsys.com> (dwc2 driver maintainer) >> - linux-...@vger.kernel.org (usb mailing list) >> >> In the past they provided information and helped to debug issues. >> Please also keep me Cc'ed so I can help with any Amlogic specific >> questions, drivers, etc. >> >> >> Best regards, >> Martin >>
