From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marek Vasut <marex@denx.de>
Date: Thu, 9 Oct 2014 01:59:37 +0200
Subject: [U-Boot] [PATCH V5] ARM: mx6: Add support for Kosagi Novena
In-Reply-To: <363b86c60cb608abdd5489644f2fd56e.mailbg@mail.bg>
References: <5434EC1F.3000901@kosagi.com>
	<363b86c60cb608abdd5489644f2fd56e.mailbg@mail.bg>
Message-ID: <201410090159.37725.marex@denx.de>
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On Wednesday, October 08, 2014 at 05:35:44 PM, picmaster at mail.bg wrote:
> Hi Sean,

Hi all,

> ----- ????? ?? Sean Cross (xobs at kosagi.com), ?? 08.10.2014 ? 10:47 -----
> 
> > On 08/10/2014 05:55, Nikolay Dimitrov wrote:
> >> Hi Marek,
> >> 
> >> I'm marking only the critical issues that are left unfixed from
> >> previous conversations, to speed-up the process a little bit.
> >> I'll send later patches for the non-critical issues to spare you the
> >> extra work (and I'm sure my constructive criticism is already boring
> >> 
> >> :D ).
> >> 
> >> On 10/06/2014 07:02 PM, Marek Vasut wrote:
> >>> +#define NOVENA_USB_HUB_RESET    IMX_GPIO_NR(7, 12)
> >> 
> >> ...
> >> 
> >>> +/*
> >>> + * USB
> >>> + */
> >>> +#ifdef CONFIG_USB_EHCI_MX6
> >>> +int board_ehci_hcd_init(int port)
> >>> +{
> >>> +    /* Reset USB hub */
> >>> +    if (port == 1) {
> >>> +        gpio_set_value(NOVENA_USB_HUB_RESET, 0);
> >>> +        mdelay(2);
> >>> +        gpio_set_value(NOVENA_USB_HUB_RESET, 1);
> >>> +    }
> >>> +    return 0;
> >>> +}
> >>> +#endif
> >> 
> >> As we previously discussed, this pin definition conflicts with
> >> NOVENA_PCIE_POWER_ON_GPIO (GPIO7_IO12 is connected to PCIE_PWRON), so
> >> by asserting it, you'll turn-off the wrong sub-system.
> >> 
> >> Currently the USB hub is reset only by system reset (RESETBMCU
> >> asserted by the PMIC). I don't see how the CPU can selectively reset
> >> the USB hub via a GPIO, so it would be better to remove the reset code.
> >> 
> >> @Sean - can you please confirm/reject this finding?
> 
> @Sean: Do you have any comments on USB hub reset stuff? Should we ditch
> entirely the reset code, or should we modify it somehow to work properly?

OK, so it's just this USB that remains, right ?