linux-kernel - Re: [PATCH v3 0/6] bus: brcmstb_gisb: add support for GISBv7 arbiter

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Message-ID: <20170330181932.GB8062@leverpostej>
Date:   Thu, 30 Mar 2017 19:19:32 +0100
From:   Mark Rutland <mark.rutland@....com>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     Doug Berger <opendmb@...il.com>, robh+dt@...nel.org,
        computersforpeace@...il.com, gregory.0xf0@...il.com,
        bcm-kernel-feedback-list@...adcom.com, linus.walleij@...aro.org,
        treding@...dia.com, jonathanh@...dia.com, olof@...om.net,
        mirza.krak@...il.com, suzuki.poulose@....com,
        bgolaszewski@...libre.com, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        catalin.marinas@....com, will.deacon@....com
Subject: Re: [PATCH v3 0/6] bus: brcmstb_gisb: add support for GISBv7 arbiter

On Thu, Mar 30, 2017 at 09:33:32AM -0700, Florian Fainelli wrote:
> On 03/29/2017 05:29 PM, Doug Berger wrote:
> > This patch set contains changes to enable the GISB arbiter driver
> > on the latest ARM64 architecture Set-Top Box chips from Broadcom.
> > 
> > Since the ARM64 architecture does not support the hooking of low
> > level fault handlers the driver has been adjusted to depend solely
> > on GISB interrupts and notify events to provide diagnostic
> > messaging.  The GISB hardware still triggers bus faults for the
> > processor so the default low-level aborts will occur and will be
> > handled based on the architecture specific kernel implementation.
> > 
> > While this tends to obsure the GISB error messaging it is still
> > reasonable so the same approach is applied to the ARM architecture
> > for consistency.
> > 
> > The patches also correct some issues with the existing driver
> > and add the new register map for the GISBv7 hardware first
> > appearing in the BCM7278 device.
> 
> This all looks great to me, and since there are no more ARM64
> dependencies I can take this via the Broadcom ARM/ARM64 SoC pull requests.
> 
> Mark, are you also happy with this v3?

It looks fine by me.

Thanks,
Mark.