linux-kernel - [PATCH 4.2 049/258] ARM: dts: Fix wrong clock binding for sysmmu_fimd1

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Message-Id: <20151018014732.544199537@linuxfoundation.org>
Date:	Sat, 17 Oct 2015 18:56:02 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Joonyoung Shim <jy0922.shim@...sung.com>,
	Javier Martinez Canillas <javier@....samsung.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>
Subject: [PATCH 4.2 049/258] ARM: dts: Fix wrong clock binding for sysmmu_fimd1_1 on exynos5420

4.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Joonyoung Shim <jy0922.shim@...sung.com>

commit c7d2ecd9f64c351cb4d551f1f472d0fc09c3cae8 upstream.

The sysmmu_fimd1_1 should bind the clock CLK_SMMU_FIMD1M1, not the clock
CLK_SMMU_FIMD1M0. CLK_SMMU_FIMD1M0 is a clock for the sysmmu_fimd1_0.

This wrong clock binding causes the problem that is blocked in iommu_map
function when IOMMU is enabled and exynos-drm driver tries to allocate
buffer via DMA mapping API on Odroid-XU3 board.

Fixes: b70045167815 ("ARM: dts: add sysmmu nodes for exynos5420")
Signed-off-by: Joonyoung Shim <jy0922.shim@...sung.com>
Reviewed-by: Javier Martinez Canillas <javier@....samsung.com>
Acked-by: Marek Szyprowski <m.szyprowski@...sung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm/boot/dts/exynos5420.dtsi |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arm/boot/dts/exynos5420.dtsi
+++ b/arch/arm/boot/dts/exynos5420.dtsi
@@ -1118,7 +1118,7 @@
 		interrupt-parent = <&combiner>;
 		interrupts = <3 0>;
 		clock-names = "sysmmu", "master";
-		clocks = <&clock CLK_SMMU_FIMD1M0>, <&clock CLK_FIMD1>;
+		clocks = <&clock CLK_SMMU_FIMD1M1>, <&clock CLK_FIMD1>;
 		power-domains = <&disp_pd>;
 		#iommu-cells = <0>;
 	};


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