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From: Vince Weaver <vincent.weaver@maine.edu>
To: Eric Anholt <eric@anholt.net>
Cc: Florian Fainelli <f.fainelli@gmail.com>,
	linux-kernel@vger.kernel.org,
	bcm-kernel-feedback-list@broadcom.com,
	linux-rpi-kernel@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] arm: bcm2835: Add the PMU to the devicetree.
Date: Thu, 17 May 2018 12:02:08 -0400 (EDT)	[thread overview]
Message-ID: <alpine.DEB.2.21.1805171159110.7984@macbook-air> (raw)
In-Reply-To: <87efia1hjg.fsf@anholt.net>

On Thu, 17 May 2018, Eric Anholt wrote:
> 
> Is that better than a53?  I'm happy to switch to that.  The important
> part to me is the a7, since basically everyone with this hw is running
> arm32.

no, on further investigation it looks like a53 is more proper to use than 
the generic armv8.

Is the armv8 pmu on the cortex-a53 backwards compatible with armv7?  I'm 
dreading having to pull up the various ARM ARMs to look for myself so if 
it works for you I'm fine with that part too.

The biggest pushback I had with my original patch was no one believing irq 
9 was the right one to use.

Vince

WARNING: multiple messages have this Message-ID (diff)
From: vincent.weaver@maine.edu (Vince Weaver)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] arm: bcm2835: Add the PMU to the devicetree.
Date: Thu, 17 May 2018 12:02:08 -0400 (EDT)	[thread overview]
Message-ID: <alpine.DEB.2.21.1805171159110.7984@macbook-air> (raw)
In-Reply-To: <87efia1hjg.fsf@anholt.net>

On Thu, 17 May 2018, Eric Anholt wrote:
> 
> Is that better than a53?  I'm happy to switch to that.  The important
> part to me is the a7, since basically everyone with this hw is running
> arm32.

no, on further investigation it looks like a53 is more proper to use than 
the generic armv8.

Is the armv8 pmu on the cortex-a53 backwards compatible with armv7?  I'm 
dreading having to pull up the various ARM ARMs to look for myself so if 
it works for you I'm fine with that part too.

The biggest pushback I had with my original patch was no one believing irq 
9 was the right one to use.

Vince

  reply	other threads:[~2018-05-17 16:02 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-17 13:17 [PATCH] arm: bcm2835: Add the PMU to the devicetree Eric Anholt
2018-05-17 13:17 ` Eric Anholt
2018-05-17 14:11 ` Vince Weaver
2018-05-17 14:11   ` Vince Weaver
2018-05-17 14:30   ` Eric Anholt
2018-05-17 14:30     ` Eric Anholt
2018-05-17 16:02     ` Vince Weaver [this message]
2018-05-17 16:02       ` Vince Weaver
2018-05-17 16:06   ` Stefan Wahren
2018-05-17 16:06     ` Stefan Wahren
2018-05-17 15:59 ` Stefan Wahren
2018-05-17 15:59   ` Stefan Wahren
2018-05-17 16:34   ` Vince Weaver
2018-05-17 16:34     ` Vince Weaver
2018-05-17 16:55     ` Stefan Wahren
2018-05-17 16:55       ` Stefan Wahren
2018-05-17 18:07       ` Peter Zijlstra
2018-05-17 18:07         ` Peter Zijlstra
2018-05-17 18:27         ` Vince Weaver
2018-05-17 18:27           ` Vince Weaver
2018-05-17 19:31           ` Vince Weaver
2018-05-17 19:31             ` Vince Weaver
2018-05-17 19:59             ` Florian Fainelli
2018-05-17 19:59               ` Florian Fainelli
2018-05-18  8:07               ` Marc Zyngier
2018-05-18  8:07                 ` Marc Zyngier
2018-05-18  9:37                 ` Stefan Wahren
2018-05-18  9:37                   ` Stefan Wahren
2018-05-18  9:49                   ` Marc Zyngier
2018-05-18  9:49                     ` Marc Zyngier
2018-05-17 17:09     ` Eric Anholt
2018-05-17 17:09       ` Eric Anholt
2018-05-17 16:44 ` Peter Robinson
2018-05-17 16:44   ` Peter Robinson

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