linux-kernel - Re: [PATCH v2] ARM: EXYNOS: mcpm: Don't rely on firmware's secondary_cpu

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Message-ID: <CAL1qeaGv+hBCr8oqs-E2j_Qh0Z=ZTVEaM-gdyu286Snu4otbMA@mail.gmail.com>
Date:	Mon, 9 Jun 2014 13:05:17 -0700
From:	Andrew Bresticker <abrestic@...omium.org>
To:	Kevin Hilman <khilman@...aro.org>,
	Nicolas Pitre <nicolas.pitre@...aro.org>
Cc:	Doug Anderson <dianders@...omium.org>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Abhilash Kesavan <a.kesavan@...sung.com>,
	Inderpal Singh <inderpal.s@...sung.com>,
	Thomas Abraham <thomas.ab@...sung.com>,
	Olof Johansson <olof@...om.net>,
	Tushar Behera <trblinux@...il.com>,
	Javier Martinez Canillas <javier.martinez@...labora.co.uk>,
	linux-samsung-soc <linux-samsung-soc@...r.kernel.org>,
	Russell King <linux@....linux.org.uk>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] ARM: EXYNOS: mcpm: Don't rely on firmware's secondary_cpu_start

> [1] While waiting for the forth-coming patch from Andrew to enable the
>     CCI port for the boot cluster), I do this from u-boot before starting
>     the kernel (based on earlier email from Doug):
>
>     mw.l 10d25000 3  # Enable CCI from U-Boot

>From the other thread, it sounds like Nicolas wants enabling of the
boot cluster's CCI port to be done unconditionally for all MCPM
platforms.  Nicolas, are you preparing a patch for this or should I?
The only issue I see with making the MCPM loopback generic is that
although all current mainline MCPM platforms have the same cache flush
procedure, a future platform could be different.

Thanks,
Andrew
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