From: peter.chen@freescale.com (Peter Chen)
To: linux-arm-kernel@lists.infradead.org
Subject: Enabling USBH1 on mx53qsb
Date: Thu, 25 Jul 2013 11:37:17 +0800 [thread overview]
Message-ID: <20130725033716.GB4489@nchen-desktop> (raw)
In-Reply-To: <CAOMZO5DB5Pxv50Yp2xUtp+yoJq6O+r=ZrGfJvsFNf1gcVOQUEA@mail.gmail.com>
On Thu, Jul 25, 2013 at 12:28:15AM -0300, Fabio Estevam wrote:
> Hi Peter,
>
> On Thu, Jul 25, 2013 at 12:13 AM, Peter Chen <peter.chen@freescale.com> wrote:
>
> > Would you enable CONFIG_USB_DEBUG to see where is the problem?
>
> This is what I get:
>
> ci_hdrc ci_hdrc.0: ChipIdea HDRC found, lpm: 0; cap: f5780100 op: f5780140
> ci_hdrc ci_hdrc.0: doesn't support gadget
> ci_hdrc ci_hdrc.0: EHCI Host Controller
> ci_hdrc ci_hdrc.0: new USB bus registered, assigned bus number 1
> ci_hdrc ci_hdrc.0: USB 2.0 started, EHCI 1.00
> hub 1-0:1.0: USB hub found
> hub 1-0:1.0: 1 port detected
> ci_hdrc ci_hdrc.1: ChipIdea HDRC found, lpm: 0; cap: f5780300 op: f5780340
> ci_hdrc ci_hdrc.1: doesn't support gadget
> ci_hdrc ci_hdrc.1: EHCI Host Controller
> ci_hdrc ci_hdrc.1: new USB bus registered, assigned bus number 2
> ci_hdrc ci_hdrc.1: USB 2.0 started, EHCI 1.00
> hub 2-0:1.0: USB hub found
> hub 2-0:1.0: 1 port detected
>
> >
> >>
> >> However, if I access USBH1 within U-boot prior to launching the
> >> kernel, then I am able to use USBH1 in the kernel succesfully.
> >
> > access host 1 at u-boot, what do you mean, only register access
> > or let host 1 work?
>
> This is what I do in U-boot:
>
> MX53LOCO U-Boot > usb reset
> (Re)start USB...
> USB0: USB EHCI 1.00
> scanning bus 0 for devices... 2 USB Device(s) found
> scanning usb for storage devices... 1 Storage Device(s) found
> scanning usb for ethernet devices... 0 Ethernet Device(s) found
> MX53LOCO U-Boot > run bootcmd
>
> Then kernel is launched and I can use USBH1 succesfully.
seems u-boot already support mx53.
Can you measure the host 1 vbus pin? The vbus should be 5v to let
the host works normal.
--
Best Regards,
Peter Chen
next prev parent reply other threads:[~2013-07-25 3:37 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-25 2:59 Enabling USBH1 on mx53qsb Fabio Estevam
2013-07-25 3:13 ` Peter Chen
2013-07-25 3:28 ` Fabio Estevam
2013-07-25 3:37 ` Peter Chen [this message]
2013-07-25 3:44 ` Fabio Estevam
2013-07-25 3:57 ` Marek Vasut
2013-07-25 14:03 ` Arnaud Patard (Rtp)
2013-07-25 20:26 ` Fabio Estevam
2013-07-25 21:06 ` Fabio Estevam
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