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Patch "ARM: dts: Fix wrong clock binding for sysmmu_fimd1_1 on exynos5420" has been added to the 4.2-stable tree

PATCH [email protected] 1 participant 1 message Oct 13, 2015

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This is a note to let you know that I've just added the patch titled

ARM: dts: Fix wrong clock binding for sysmmu_fimd1_1 on exynos5420

to the 4.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:

     arm-dts-fix-wrong-clock-binding-for-sysmmu_fimd1_1-on-exynos5420.patch

and it can be found in the queue-4.2 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From c7d2ecd9f64c351cb4d551f1f472d0fc09c3cae8 Mon Sep 17 00:00:00 2001

From: Joonyoung Shim <[email protected]>
Date: Wed, 23 Sep 2015 16:41:55 +0900
Subject: ARM: dts: Fix wrong clock binding for sysmmu_fimd1_1 on exynos5420

From: Joonyoung Shim <[email protected]>

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.

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

Patches currently in stable-queue which might be from [email protected] are

queue-4.2/arm-dts-fix-wrong-clock-binding-for-sysmmu_fimd1_1-on-exynos5420.patch