From: sshtylyov@mvista•com (Sergei Shtylyov)
To: linux-arm-kernel@lists•infradead.org
Subject: usb, davinci: usb 2.0 problem on an am1808 based board
Date: Fri, 18 May 2012 15:27:41 +0400 [thread overview]
Message-ID: <4FB6322D.5070602@mvista.com> (raw)
In-Reply-To: <A73F36158E33644199EB82C5EC81C7BC3E97C9C1@DBDE01.ent.ti.com>
Hello.
On 18-05-2012 14:07, Manjunathappa, Prakash wrote:
> I do not know how putting delay helped MSC device detection.
> Can you please check if MUSB is coming up in "b_idle" state(by
> $cat /sys/devices/platform/musb-da8xx/musb-hdrc/mode)?
> State should move to b_peripheral on connecting gadget cable.
> If you connect MSC device via mini-A connector, state should change to "a_host".
> OTG timer is responsible for above state changes, can you please check if below
> changes are present?
> diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c index 4da7492..a1a692e 100644
> --- a/drivers/usb/musb/da8xx.c
> +++ b/drivers/usb/musb/da8xx.c
> @@ -76,6 +76,7 @@
> #define DA8XX_INTR_TX_SHIFT 0
> #define DA8XX_INTR_TX_MASK (DA8XX_USB_TX_EP_MASK<< DA8XX_INTR_TX_SHIFT)
>
> +#define A_WAIT_BCON_TIMEOUT 1100 /* in ms */
> #define DA8XX_MENTOR_CORE_OFFSET 0x400
>
> #define CFGCHIP2 IO_ADDRESS(DA8XX_SYSCFG0_BASE + DA8XX_CFGCHIP2_REG)
> @@ -443,6 +444,7 @@ static int da8xx_musb_init(struct musb *musb)
> rev, __raw_readl(CFGCHIP2),
> musb_readb(reg_base, DA8XX_USB_CTRL_REG));
>
> + musb->a_wait_bcon = A_WAIT_BCON_TIMEOUT;
> musb->isr = da8xx_musb_interrupt;
> return 0;
> fail:
This change shouldn't be needed as musb->a_wait_bcon is set in
musb_core.c::allocate_instance().
> Thanks,
> Prakash
WBR, Sergei
next prev parent reply other threads:[~2012-05-18 11:27 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4EBC9DF1.90604@denx.de>
[not found] ` <20111111091912.GB19090@legolas.emea.dhcp.ti.com>
[not found] ` <4EBEB29E.50705@mvista.com>
[not found] ` <4EC0F87B.4010104@denx.de>
2012-05-04 10:10 ` usb, davinci: usb 2.0 problem on an am1808 based board Heiko Schocher
2012-05-17 6:37 ` Heiko Schocher
2012-05-18 10:07 ` Manjunathappa, Prakash
2012-05-18 11:27 ` Sergei Shtylyov [this message]
2012-05-21 10:12 ` Manjunathappa, Prakash
2012-05-21 6:10 ` Heiko Schocher
2012-05-21 10:18 ` Manjunathappa, Prakash
2012-05-22 7:22 ` Heiko Schocher
2012-05-29 14:22 ` Heiko Schocher
2012-06-27 4:36 ` Heiko Schocher
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