[PATCH 1/2] clk: samsung: audss: Fix silent hang on Exynos4412 due to disabled EPLL

[sboyd@codeaurora.org (Stephen Boyd)]

On 06/22, Sylwester Nawrocki wrote:
> On 06/21/2017 09:08 PM, Krzysztof Kozlowski wrote:
> >Similarly to commit f1e9203e2366 ("clk: samsung: Fix Exynos 5420 pinctrl
> >setup and clock disable failure due to domain being gated") for
> >Exynos5420, the Exynos4412 also requires that EPLL is not disabled.
> >Otherwise any access to MAUDIO block will silently halt.
> >
> >This was not visible before because EPLL on Exynos4 could not be
> >disabled before commit 6edfa11cb396 ("clk: samsung:
> >Add enable/disable operation for PLL36XX clocks").  After this commit,
> >on Odroid U3 board one can see silent hang, usually with last (but
> >unrelated) messages:
> >
> >	[    2.382741] input: gpio_keys as /devices/platform/gpio_keys/input/input0
> >	[    2.405686] usb 1-3: new high-speed USB device number 3 using exynos-ehci
> >	[    2.419843] max77686-rtc max77686-rtc: setting system clock to 2017-06-21 17:04:13 UTC (1498064653)
> >
> >Mark Exynos4 variant as also needed EPLL to be enabled all the time.
> >
> >Signed-off-by: Krzysztof Kozlowski<krzk@kernel.org>
> Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
> 
> Stephen, Mike,
> 
> Can you please apply this patch directly?
> 

Applied to clk-next.

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