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Date:      Fri, 22 Mar 2013 17:19:23 +0400
From:      Alexander Fedorov <alexander.fedorov@rtlservice.com>
To:        freebsd-arm@freebsd.org
Subject:   HACKBERRY USB problem
Message-ID:  <CAOcOT_wuN7kS7xy3UCp_2AUTzySNY6Xc8bv5iWxBpW%2BFgRSz1w@mail.gmail.com>
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Hi all,

I have a Miniand Hackberry board based on Allwinner A10 SOC:
https://www.miniand.com/products/Hackberry%20A10%20Developer%20Board

I'm trying to use kernel and FTD configuration from CUBIEBOARD. And, I
have little problem with USB setup.
The problem is, that Hackberry used different GPIO pin configuration
to setup USB power. Also, on Hackberry board
A10 USB Host controller connected to 4-port USB HUB (Genesys Logic
GL850G), and it need properly power configuration too.

I'm looking for pin configuration in FEX files. For CUBIEBOARD USB
configuration is
https://github.com/linux-sunxi/sunxi-boards/blob/master/sys_config/a10/cubieboard.fex:
For Hackberry: https://github.com/linux-sunxi/sunxi-boards/blob/master/sys_config/a10/hackberry.fex

And edit a10_ehci_attach function in sys/arm/allwiner/a10_echi.c file:

    /* Enable clock for USB */
    a10_clk_usb_activate();

    /* Give power to HUB pin PB09 (HACKBERRY) */
    GPIO_PIN_SETFLAGS(sc_gpio_dev, 41, GPIO_PIN_OUTPUT);
    GPIO_PIN_SET(sc_gpio_dev, 41, GPIO_PIN_HIGH);

    /* Give power to USB */
//  GPIO_PIN_SETFLAGS(sc_gpio_dev, GPIO_USB2_PWR, GPIO_PIN_OUTPUT);
//  GPIO_PIN_SET(sc_gpio_dev, GPIO_USB2_PWR, GPIO_PIN_HIGH);

    /* Give power to USB PH12 */
    GPIO_PIN_SETFLAGS(sc_gpio_dev, 236, GPIO_PIN_OUTPUT);
    GPIO_PIN_SET(sc_gpio_dev, 236, GPIO_PIN_HIGH);

    /* Give power to USB */
    GPIO_PIN_SETFLAGS(sc_gpio_dev, GPIO_USB1_PWR, GPIO_PIN_OUTPUT);
//  GPIO_PIN_SET(sc_gpio_dev, GPIO_USB1_PWR, GPIO_PIN_HIGH);
    GPIO_PIN_SET(sc_gpio_dev, GPIO_USB1_PWR, GPIO_PIN_LOW);

Now, kernel can attach external USB devices witch some restrictions.
When I plug USB-to-RS232 cable to
board before give power, Genesys Logic don't attached. I think it's
need properly reset sequence.

However, it's work:
ehci1: <Allwinner Integrated USB 2.0 controller> mem
0x1c1c000-0x1c1cfff irq 40 on simplebus0
usbus1: EHCI version 1.0
usbus1 on ehci1
uart0: <16750 or compatible> mem 0x1c28000-0x1c283ff irq 1 on
simplebus0
uart0: console (115200,n,8,1)
Timecounters tick every 10.000 msec
usbus0: 480Mbps High Speed USB v2.0
usbus1: 480Mbps High Speed USB v2.0
WARNING: WITNESS option enabled, expect reduced performance.
Root mount waiting for: usbus1 usbus0
ugen1.1: <Allwinner> at usbus1
uhub0: <Allwinner EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on
usbus1
ugen0.1: <Allwinner> at usbus0
uhub1: <Allwinner EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on
usbus0
uhub0: 1 port with 1 removable, self powered
uhub1: 1 port with 1 removable, self powered
Root mount waiting for: usbus1 usbus0
ugen1.2: <Realtek> at usbus1
ugen0.2: <Genesys Logic> at usbus0
uhub2: <Genesys Logic USB2.0 Hub, class 9/0, rev 2.00/77.64, addr 2>
on usbus0
uhub2: 4 ports with 4 removable, self powered
Root mount waiting for: usbus0
Root mount waiting for: usbus0
ugen0.3: <JetFlash> at usbus0
umass0: <JetFlash Mass Storage Device, class 0/0, rev 2.00/11.00, addr
3> on usbus0
umass0:  SCSI over Bulk-Only; quirks = 0x0100
umass0:0:0:-1: Attached to scbus0
Root mount waiting for: usbus0
da0 at umass-sim0 bus 0 scbus0 target 0 lun 0
da0: <JetFlash Transcend 8GB 1100> Removable Direct Access SCSI-4
device
da0: 40.000MB/s transfers
da0: 7725MB (15820800 512 byte sectors: 255H 63S/T 984C)
Trying to mount root from ufs:/dev/da0s2 []...
WARNING: / was not properly dismounted

But, I think it's not good to edit ECHI driver.
Where is the right place in sources to put various board specific pin
settings and external chips configuration logic?

Alexander Fedorov
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