clk: exynos5420: Restore GATE_BUS_TOP on suspend
Commit ae43b328 ("ARM: 8202/1: dmaengine: pl330: Add runtime Power Management support v12") added pm support for the pl330 dma driver but it makes the clock for the Exynos5420 MDMA0 DMA controller to be gated during suspend and this in turn makes its parent clock aclk266_g2d to be gated. But the clock needs to be ungated prior suspend to allow the system to be suspend and resumed correctly. Add GATE_BUS_TOP register to the list of registers to be restored when the system enters into a suspend state so aclk266_g2d will be ungated. Thanks to Abhilash Kesavan for figuring out that this was the issue. Fixes: ae43b328 ("ARM: 8202/1: dmaengine: pl330: Add runtime Power Management support v12") Cc: stable@vger.kernel.org # 3.19+ Signed-off-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk> Tested-by: NKevin Hilman <khilman@linaro.org> Tested-by: NAbhilash Kesavan <a.kesavan@samsung.com> Acked-by: NTomasz Figa <tomasz.figa@gmail.com> Signed-off-by: NSylwester Nawrocki <s.nawrocki@samsung.com>
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