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Re: [PATCH 10/21] usb: chipidea: msm: Rely on core to override AHBBURST

From Peter Chen <hzpeterchen@gmail.com>
Newsgroups linux.kernel
Subject Re: [PATCH 10/21] usb: chipidea: msm: Rely on core to override AHBBURST
Date 2016-06-30 03:30 +0200
Message-ID <rPyXM-39e-19@gated-at.bofh.it> (permalink)
References <rOcFX-8ei-3@gated-at.bofh.it> <rOcFX-8ei-1@gated-at.bofh.it> <rPhke-Kk-23@gated-at.bofh.it> <rPyXM-39e-21@gated-at.bofh.it>
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On Wed, Jun 29, 2016 at 11:59:21AM -0700, Stephen Boyd wrote:
> Quoting Peter Chen (2016-06-28 23:32:11)
> > On Sun, Jun 26, 2016 at 12:28:27AM -0700, Stephen Boyd wrote:
> > > The core framework already handles setting this parameter with a
> > > platform quirk. Add the appropriate flag so that we always set
> > > AHBBURST to 0. Technically DT should be doing this, but we always
> > > do it for msm chipidea devices so setting the flag in the driver
> > > works just as well.
> > 
> > You still need to set AHB burst value at dts, this flag is just for
> > override, see below:
> > 
> > ahb-burst-config = <0x0>;
> 
> Right, I have added that to dts now, but the CI_HDRC_OVERRIDE_AHB_BURST
> flag allows us to specify it from the platdata structure in the
> ci_hdrc_msm.c file. As the value is zero for msm type controllers, I
> left it out of the static definition of platdata because all the
> non-initialized members of that structure are going to be zero anyway. I
> can explicitly set it to zero to make it more clear if you like.

I suggest setting it explicitly at dts, at current code, it is set
as zero explicitly too:)

-- 

Best Regards,
Peter Chen

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[PATCH 10/21] usb: chipidea: msm: Rely on core to override AHBBURST Stephen Boyd <stephen.boyd@linaro.org> - 2016-06-26 09:30 +0200
  Re: [PATCH 10/21] usb: chipidea: msm: Rely on core to override  AHBBURST Peter Chen <hzpeterchen@gmail.com> - 2016-06-29 08:40 +0200
    Re: [PATCH 10/21] usb: chipidea: msm: Rely on core to override  AHBBURST Peter Chen <hzpeterchen@gmail.com> - 2016-06-30 03:30 +0200

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