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. 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. 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@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@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 = <®_usb_otg1_vbus>; dr_mode = "host"; status = "okay"; };
&usbotg2 { vbus-supply = <®_usb_otg2_vbus>; dr_mode = "host"; status = "okay"; };
My board is SomLabs Visionsom option with NAND 512Mb.
Thanks in advanced
Best Regards
Michal