[U-Boot] U-Boot 2018.09 imx6ull mass storage issue

[Lukasz Majewski <lukma@denx.de>]

Hi Michał,

> Hello,
> 
> I try to load some images from USB flash drive. When issuing/usb 
> start/with the flash drive on to the first USB I get some following 
> information:
> 
>     U-Boot 2018.09-36904-gae57ffc-dirty (Dec 18 2018 - 23:00:37 +0100)
> 
>     CPU: Freescale i.MX6ULL rev1.1 792 MHz (running at 396 MHz)
>     CPU: Industrial temperature grade (-40C to 105C) at 49C
>     Reset cause: POR
>     Model: SomLabs i.MX6 ULL Visionsom
>     Board: SomLabs visionsom 6ull
>     DRAM: 512 MiB
>     NAND: 512 MiB
>     Loading Environment from NAND... *** Warning - bad CRC, using
>     default environmet
> 
>     Video: 800x480x24
>     In: serial
>     Out: serial
>     Err: serial
>     Net: FEC0 [PRIME]
>     Warning: FEC0 (eth0) using random MAC address - 46:79:2e:d4:3f:03
> 
>     Somlabs iMX6ULL # usb start
>     starting USB...
>     USB0: USB EHCI 1.00
>     USB1: USB EHCI 1.00
>     scanning bus 0 for devices... 1 USB Device(s) found
>     scanning bus 1 for devices... EHCI timed out on TD -
> token=0x80008d80
> 
>     USB device not accepting new address (error=22)
>     1 USB Device(s) found
>     scanning usb for storage devices... 0 Storage Device(s) found
>     Somlabs iMX6ULL #
> 
> I'm trying to find the solution on different forums but without
> success. Hardware is OK because on U-Boot from 2017.03 it works
> well.Hi Here is a list what I'm trying
> 
>  1. setenv usb_pgood_delay 10000
>  2. Changed max_xfer_blk to 32768, 65535 etc.
>  3. Adding extra lines into usb_storage.c
> 
>     int gave_extra_time = 0;
> 
>     ...
> 
>     if ((srb->sense_buf[2] == 0x02) &&
>     (srb->sense_buf[12] == 0x3a))
>     return -1;
> 
>     ...
> 
>     /* If the status is "Not Ready - becoming ready", give it
>     * more time. Linux issues a spinup command (once) and gives
>     * it 100 seconds. */
>     if (srb->sense_buf[2] == 0x02 && srb->sense_buf[12] == 0x04 &&
>     gave_extra_time == 0)
>     gave_extra_time = retries = 1000; /* Allow 10 seconds. */
>     ...
> 
>     mdelay(100);
>     } while (retries--);
> 
> The problem is with disappearing power supply on USB. 

Maybe you need to check if DTS description of some regulator is missing?

From 2017 till now a lot of subsystems have been converted to driver
model.

> The flash drive 
> blinks shortly and disabled at all then. Nothing helps so far. On
> U-Boot 2017.03 when I issue/usb//start/, the flash drive blinks 2
> times and LED in it start beam constantly. Of course, all USB flash
> drive operations working well.
> 
> U-Boot is available at GitHub - SoMLabs/somlabs-uboot-imx 
> <https://community.nxp.com/external-link.jspa?url=https%3A%2F%2Fgithub.com%2FSoMLabs%2Fsomlabs-uboot-imx> - 
> branch 2018.09 if someone wants to check parameters (draft version)
> 
> 
> 
> I added some parameters related with usb and mass storage
> 
> 
> form defconfig
> 
> 
> CONFIG_CMD_USB=y
> CONFIG_USB=y
> CONFIG_DM_USB=y
> CONFIG_USB_EHCI_HCD=y
> CONFIG_MXC_USB_OTG_HACTIVE=y
> CONFIG_CMD_USB_MASS_STORAGE=y
> CONFIG_USB_STORAGE=y
> CONFIG_USB_GADGET=y
> CONFIG_USB_GADGET_MANUFACTURER="SomLabs"
> CONFIG_USB_GADGET_VENDOR_NUM=0x1b67
> CONFIG_USB_GADGET_PRODUCT_NUM=0x4000
> CONFIG_CI_UDC=y
> CONFIG_USB_GADGET_DOWNLOAD=y
> 
> form dts
> 
>      regulators {
>          compatible = "simple-bus";
>          #address-cells = <1>;
>          #size-cells = <0>;
> 
>          reg_usb_otg1_vbus: regulator at 2 {
>              compatible = "regulator-fixed";
>              reg = <2>;
>              pinctrl-names = "default";
>              pinctrl-0 = <&pinctrl_usb_otg1>;
>              regulator-name = "usb_otg1_vbus";
>              regulator-min-microvolt = <5000000>;
>              regulator-max-microvolt = <5000000>;
>              gpio = <&gpio2 8 GPIO_ACTIVE_HIGH>;
>              enable-active-high;
>          };
> 
>          reg_usb_otg2_vbus: regulator at 3 {
>              compatible = "regulator-fixed";
>              reg = <3>;
>              pinctrl-names = "default";
>              pinctrl-0 = <&pinctrl_usb_otg2>;
>              regulator-name = "usb_otg2_vbus";
>              regulator-min-microvolt = <5000000>;
>              regulator-max-microvolt = <5000000>;
>              gpio = <&gpio2 12 GPIO_ACTIVE_HIGH>;
>              enable-active-high;
>          };
> 
> };
> 
>          pinctrl_usb_otg1: usbotg1grp {
>              fsl,pins = <
>                  MX6UL_PAD_ENET2_TX_DATA1__GPIO2_IO12    0x10b0
>              >;
>          };
> 
>          pinctrl_usb_otg2: usbotg2grp {
>              fsl,pins = <
>                  MX6UL_PAD_ENET2_RX_DATA0__GPIO2_IO08    0x10b0
>              >;
>          };
> 
> &usbotg1 {
>      vbus-supply = <&reg_usb_otg1_vbus>;
>      dr_mode = "host";
>      status = "okay";
> };
> 
> &usbotg2 {
>      vbus-supply = <&reg_usb_otg2_vbus>;
>      dr_mode = "host";
>      status = "okay";
> };
> 
> My board is SomLabs Visionsom option with NAND 512Mb.
> 
> 
> Thanks in advanced
> 
> Best Regards
> 
> Michal
> 
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Best regards,

Lukasz Majewski

--

DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email: lukma at denx.de
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