linux-kernel - Re: [PATCH v2 6/8] mfd: exynos-lpass: Add support for clocks

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Message-ID: <20170201132456.3dcprep7hwbii46n@rob-hp-laptop>
Date:   Wed, 1 Feb 2017 07:24:56 -0600
From:   Rob Herring <robh@...nel.org>
To:     Marek Szyprowski <m.szyprowski@...sung.com>
Cc:     linux-gpio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Sylwester Nawrocki <s.nawrocki@...sung.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Tomasz Figa <tomasz.figa@...il.com>,
        Lee Jones <lee.jones@...aro.org>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Subject: Re: [PATCH v2 6/8] mfd: exynos-lpass: Add support for clocks

On Thu, Jan 26, 2017 at 09:33:52AM +0100, Marek Szyprowski wrote:
> Exynos LPASS requires some clocks to be enabled to make any access to its
> registers. This patch adds code for handling such clocks. For current set
> of registers it is enough to keep sfr0_ctrl clock enabled. Till now it
> worked only because those clocks were enabled by bootloader and driver
> probe() happened before they were disabled by clock core because of lack
> of users. Handling those clocks is also needed to make it possible to
> enable support for audio power domain.
> 
> This patch requires adding sfr0_ctrl clock to device tree.
> 
> Signed-off-by: Marek Szyprowski <m.szyprowski@...sung.com>
> ---
>  .../devicetree/bindings/mfd/samsung,exynos5433-lpass.txt       |  6 ++++++

Acked-by: Rob Herring <robh@...nel.org>

>  drivers/mfd/exynos-lpass.c                                     | 10 ++++++++++
>  2 files changed, 16 insertions(+)