Re: [RFC PATCH 01/15] PM / devfreq: exynos: Add generic exynos bus frequency driver

From: MyungJoo Ham <myungjoo.ham@samsung.com>
To: Chanwoo Choi <cw00.choi@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>,
	kgene@kernel.org, k.kozlowski@samsung.com, robh+dt@kernel.org,
	pawel.moll@arm.com, mark.rutland@arm.com,
	ijc+devicetree@hellion.org.uk, galak@codeaurora.org,
	Russell King <linux@arm.linux.org.uk>,
	tjakobi@math.uni-bielefeld.de,
	LKML <linux-kernel@vger.kernel.org>,
	Linux PM list <linux-pm@vger.kernel.org>,
	Linux Samsung SoC <linux-samsung-soc@vger.kernel.org>,
	devicetree@vger.kernel.org
Subject: Re: [RFC PATCH 01/15] PM / devfreq: exynos: Add generic exynos bus frequency driver
Date: Thu, 26 Nov 2015 23:00:28 +0900	[thread overview]
Message-ID: <CAJ0PZbSJ26q9MWSXihQjZih0hSU=w+dR2HKxa67kJhmZtt1tJQ@mail.gmail.com> (raw)
In-Reply-To: <1448545659-32287-2-git-send-email-cw00.choi@samsung.com>

On Thu, Nov 26, 2015 at 10:47 PM, Chanwoo Choi <cw00.choi@samsung.com> wrote:
> This patch adds the generic exynos bus frequency driver for AMBA AXI bus
> of sub-blocks in exynos SoC with DEVFREQ framework. The Samsung Exynos SoC
> have the common architecture for bus between DRAM and sub-blocks in SoC.
> This driver can support the generic bus frequency driver for Exynos SoCs.
>
> In devicetree, Each bus block has a bus clock, regulator, operation-point
> and devfreq-event devices which measure the utilization of each bus block.
>
> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
> ---
>  drivers/devfreq/Kconfig             |  15 ++
>  drivers/devfreq/Makefile            |   1 +
>  drivers/devfreq/exynos/Makefile     |   1 +
>  drivers/devfreq/exynos/exynos-bus.c | 443 ++++++++++++++++++++++++++++++++++++
>  4 files changed, 460 insertions(+)
>  create mode 100644 drivers/devfreq/exynos/exynos-bus.c
>

Are we finally getting a common Exynos bus driver with full DT support?
(can this replace both Exynos4/5 drivers and support Exynos7 series?)

Cheers,
MyungJoo