[PATCH] ARM: Exynos5250: Enabling dwc3-exynos driver
Tomasz Figa
tomasz.figa at gmail.com
Thu Nov 8 04:18:15 EST 2012
Hi Vivek, Felipe,
On Wednesday 07 of November 2012 18:43:22 Felipe Balbi wrote:
> Hi,
>
> On Wed, Nov 07, 2012 at 06:55:03PM +0530, Vivek Gautam wrote:
> > Hi,
> >
> > On Tue, Nov 6, 2012 at 10:13 PM, Felipe Balbi <balbi at ti.com> wrote:
> > > On Tue, Nov 06, 2012 at 08:58:49PM +0530, Vivek Gautam wrote:
> > >> Adding DWC3 device tree node for Exynos5250 along with the
> > >> device address and clock support needed for the controller.
> > >>
> > >> Signed-off-by: Vivek Gautam <gautam.vivek at samsung.com>
> > >> ---
> > >>
> > >> arch/arm/boot/dts/exynos5250.dtsi | 6 ++++++
> > >> arch/arm/mach-exynos/clock-exynos5.c | 24
> > >> ++++++++++++++++++++++++
> > >> arch/arm/mach-exynos/include/mach/map.h | 1 +
> > >> arch/arm/mach-exynos/mach-exynos5-dt.c | 2 ++
> > >> drivers/usb/Kconfig | 1 +
> > >> 5 files changed, 34 insertions(+), 0 deletions(-)
> > >>
> > >> diff --git a/arch/arm/boot/dts/exynos5250.dtsi
> > >> b/arch/arm/boot/dts/exynos5250.dtsi index cf6a02d..52bca54 100644
> > >> --- a/arch/arm/boot/dts/exynos5250.dtsi
> > >> +++ b/arch/arm/boot/dts/exynos5250.dtsi
> > >> @@ -68,6 +68,12 @@
> > >>
> > >> interrupts = <0 96 0>;
> > >>
> > >> };
> > >>
> > >> + dwc3 {
> > >
> > > shouldn't this be usb at 12000000 ??
> >
> > Kept this in accordance with controller's name, similar to the change
> > in following:
> > http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg12800.
> > html
> >
> > Needs to be changed ?
>
> I'll leave it to DT experts, but I was under the impression that we
> should be using generic functionality names (usb, i2c, spi, uart, gpio,
> etc) instead of the IP name. IP name is something more for compatible
> flag.
>
> Don't take my word for it though :-) DT experts are the ones with final
> saying
Wrt node name, as far as I am aware of, there is no strict convention of
naming nodes, but the way you suggested is better in terms of readability -
you don't have to know this particular IP to find out what it is used for.
Similar thing is with @addr in node names. I've been always adding @addr to
the name whenever the node had reg property inside (with the same address
of course), but I'm not sure if there is a strict convention here.
Best regards,
Tomasz Figa
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