From: Ivan Gorinov <ivan.gorinov@intel.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] timer: Add High Precision Event Timers (HPET) support
Date: Fri, 30 Mar 2018 17:24:30 -0700 [thread overview]
Message-ID: <20180331002430.GA45891@intel.com> (raw)
In-Reply-To: <CAHp75Vc75AcQ_R4smqjvozOd4O4egqAVv4CDPoEOz1TA5pjiUg@mail.gmail.com>
On Fri, Mar 30, 2018 at 10:42:57PM +0300, Andy Shevchenko wrote:
> On Fri, Mar 30, 2018 at 1:39 AM, Simon Glass <sjg@chromium.org> wrote:
> > On 29 March 2018 at 18:52, Andy Shevchenko
> > <andriy.shevchenko@linux.intel.com> wrote:
>
> >> First question is how this will work in case of Broadwell and Ivybridge
> >> that have something to do with HPET in their CPU code, i.e.
> >>
> >> arch/x86/cpu/broadwell/pch.c
> >> arch/x86/cpu/ivybridge/lpc.c
> >>
> >> ?
> >>
> >> Look for
> >>
> >> clrsetbits_le32(RCB_REG(HPTC), 3, 1 << 7);
>
>
> > Perhaps that code can be removed in favour of this driver? I am happy
> > to test on these platforms if it helps.
>
> That's my point.
>
This code performs platform-specific enabling and may be required
for the generic HPET driver and OS kernel to work.
prev parent reply other threads:[~2018-03-31 0:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-29 0:58 [U-Boot] [PATCH] timer: Add High Precision Event Timers (HPET) support Ivan Gorinov
2018-03-29 10:52 ` Andy Shevchenko
2018-03-29 22:29 ` Ivan Gorinov
2018-03-29 22:39 ` Simon Glass
2018-03-30 19:42 ` Andy Shevchenko
2018-03-31 0:24 ` Ivan Gorinov [this message]
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