linux-kernel - Re: [GIT PULL] Greybus driver subsystem for 4.9-rc1

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Date:   Thu, 15 Sep 2016 11:47:13 +0100
From:   Bryan O'Donoghue <pure.logic@...us-software.ie>
To:     Mark Rutland <mark.rutland@....com>
Cc:     Greg KH <gregkh@...uxfoundation.org>,
        Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org,
        Johan Hovold <johan@...oldconsulting.com>,
        Rui Miguel Silva <rmfrfs@...il.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Sandeep Patil <sspatil@...gle.com>,
        Matt Porter <mporter@...nel.crashing.org>,
        John Stultz <john.stultz@...aro.org>,
        Rob Herring <robh@...nel.org>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Alex Elder <elder@...aro.org>, David Lin <dtwlin@...gle.com>,
        Vaibhav Agarwal <vaibhav.agarwal@...aro.org>,
        Mark Greer <mgreer@...malcreek.com>, marc.zyngier@....com,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [GIT PULL] Greybus driver subsystem for 4.9-rc1

On Thu, 2016-09-15 at 11:35 +0100, Bryan O'Donoghue wrote:
> 

Here's a slightly better diagram.

PMIC -> refclk provided to each (timer) element below.

MSM8994(timer) -- > USB
WD8a
               APBridgeA (timer) -> UniPro bus
               WD8a
                                            -> Module(timer) with UART
                                               WD1
                                            -> Module(timer) with GPIO
                                               WD2
                                            -> Module(timer) with blah
                                               WD3
                              -> SPI bus
                                            -> SVC(timer)
                                               Owns FrameTime
                                               GPIO {WD0...WDn}

So yes, each processor has it's own timer. We aren't trying to read the
MSM's FrameTime.

---
bod