linux-kernel - [PATCH] ARM: dts: exynos: Add MFC memory banks for Peach boards

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Date:	Thu, 28 Apr 2016 15:21:50 -0400
From:	Javier Martinez Canillas <javier@....samsung.com>
To:	linux-kernel@...r.kernel.org
Cc:	Javier Martinez Canillas <javier@....samsung.com>,
	Russell King <linux@....linux.org.uk>,
	Kukjin Kim <kgene@...nel.org>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	devicetree@...r.kernel.org, Kumar Gala <galak@...eaurora.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	linux-samsung-soc@...r.kernel.org,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH] ARM: dts: exynos: Add MFC memory banks for Peach boards

The MFC nodes with the memory regions reserved for memory allocations
are missing in the Exynos5420 Peach Pit and Exynos5800 Peach Pi DTS.

This causes the s5p-mfc driver probe to fail with the following error:

[    4.140647] s5p_mfc_alloc_memdevs:1072: Failed to declare coherent memory for MFC device
[    4.216163] s5p-mfc: probe of 11000000.codec failed with error -12

Add the missing nodes so the driver probes and the {en,de}coder video
nodes are registered correctly:

[    4.096277] s5p-mfc 11000000.codec: decoder registered as /dev/video4
[    4.102282] s5p-mfc 11000000.codec: encoder registered as /dev/video5

Signed-off-by: Javier Martinez Canillas <javier@....samsung.com>

---

 arch/arm/boot/dts/exynos5420-peach-pit.dts | 5 +++++
 arch/arm/boot/dts/exynos5800-peach-pi.dts  | 5 +++++
 2 files changed, 10 insertions(+)

diff --git a/arch/arm/boot/dts/exynos5420-peach-pit.dts b/arch/arm/boot/dts/exynos5420-peach-pit.dts
index b644858231b6..f9d2e4f1a0e0 100644
--- a/arch/arm/boot/dts/exynos5420-peach-pit.dts
+++ b/arch/arm/boot/dts/exynos5420-peach-pit.dts
@@ -694,6 +694,11 @@
 	status = "okay";
 };
 
+&mfc {
+	samsung,mfc-r = <0x43000000 0x800000>;
+	samsung,mfc-l = <0x51000000 0x800000>;
+};
+
 &mmc_0 {
 	status = "okay";
 	num-slots = <1>;
diff --git a/arch/arm/boot/dts/exynos5800-peach-pi.dts b/arch/arm/boot/dts/exynos5800-peach-pi.dts
index 6ba9aec15485..62ceb89e073f 100644
--- a/arch/arm/boot/dts/exynos5800-peach-pi.dts
+++ b/arch/arm/boot/dts/exynos5800-peach-pi.dts
@@ -669,6 +669,11 @@
 	status = "okay";
 };
 
+&mfc {
+	samsung,mfc-r = <0x43000000 0x800000>;
+	samsung,mfc-l = <0x51000000 0x800000>;
+};
+
 &mmc_0 {
 	status = "okay";
 	num-slots = <1>;
-- 
2.5.5