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

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Date:	Thu, 26 Nov 2015 23:00:28 +0900
From:	MyungJoo Ham <myungjoo.ham@...sung.com>
To:	Chanwoo Choi <cw00.choi@...sung.com>
Cc:	Kyungmin Park <kyungmin.park@...sung.com>, kgene@...nel.org,
	k.kozlowski@...sung.com, robh+dt@...nel.org, pawel.moll@....com,
	mark.rutland@....com, ijc+devicetree@...lion.org.uk,
	galak@...eaurora.org, Russell King <linux@....linux.org.uk>,
	tjakobi@...h.uni-bielefeld.de, LKML <linux-kernel@...r.kernel.org>,
	Linux PM list <linux-pm@...r.kernel.org>,
	Linux Samsung SoC <linux-samsung-soc@...r.kernel.org>,
	devicetree@...r.kernel.org
Subject: Re: [RFC PATCH 01/15] PM / devfreq: exynos: Add generic exynos bus
 frequency driver

On Thu, Nov 26, 2015 at 10:47 PM, Chanwoo Choi <cw00.choi@...sung.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@...sung.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
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