Re: [PATCH 1/4] ARM: dts: exynos4: add port sub-nodes to exynos usb host modules

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On Tue, Jun 17, 2014 at 10:25 AM, Marek Szyprowski
<m.szyprowski@xxxxxxxxxxx> wrote:
> This patch adds port sub-nodes to exynos4 ehci and ohci modules, which
> are required by recently merged new exynos4 usb2 phy support.
>
> Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>

I checked this against the DT binding documentation for the
samsung,exynos4210-ohci and samsung,exynos4210-ehci nodes, and also
the usb2 phy binding docs. Looks fine.

Also tested on ODROID-U2, seems to be working:

ehci-exynos: EHCI EXYNOS driver
exynos-ehci 12580000.ehci: EHCI Host Controller
exynos-ehci 12580000.ehci: new USB bus registered, assigned bus number 1
exynos-ehci 12580000.ehci: irq 102, io mem 0x12580000
exynos-ehci 12580000.ehci: USB 2.0 started, EHCI 1.00
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
ohci-exynos: OHCI EXYNOS driver

...and the onboard USB (EHCI) ethernet adapter works. Nice.

The only thing I don't quite understand is the relationship between
EHCI and OHCI controllers, one being at 12580000 and the other at
1259000; the SoC docs (which I have not studied in detail) don't make
this very clear to me - no registers listed at base address 12590000?
Anyway,

Reviewed-by: Daniel Drake <drake@xxxxxxxxxxxx>
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