linux-kernel - [PATCH] ARM: dts: Fix booting on Rinato market device

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Date:	Fri, 07 Nov 2014 12:44:22 +0100
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Ben Dooks <ben-linux@...ff.org>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
Subject: [PATCH] ARM: dts: Fix booting on Rinato market device

The bootloader on market Rinato (Gear 2) device checks for revision in
compatible field of DTB. If it is not present or lower than required
then booting fails with: "Could not do normal boot. (no DTB found)".

Log of bootloader in case of failure:
h/w: revision  = 0x06
h/w: schematic = SM-R380_Rev0.5_Final_0205
date = 2000/01/01 12:00:21 (UTC)
cmu_div:4, div:5, src_clk:800000000, pixel_clk:31860720
load_kernel: loading boot image from 57344.. (BOOT)
load_kernel: found zImage, size: 0x3267e8
0xbc Error!
Verify_Binary_Signature: failed.
pit_check_signature (BOOT) invalid.
load_kernel: found custom kernel (ret:-2147483647)
 No need to update kernel type.
Detected board: samsung,rinato-rev06
Could not do normal boot. (no DTB found)
: Entering usb mode for SM-R380_EUR_XX (65535)..

Add a "rev06" suffix to compatible to satisfy the bootloader.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
---
 arch/arm/boot/dts/exynos3250-rinato.dts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/exynos3250-rinato.dts b/arch/arm/boot/dts/exynos3250-rinato.dts
index 84380fa13e37..f72ba0a1d915 100644
--- a/arch/arm/boot/dts/exynos3250-rinato.dts
+++ b/arch/arm/boot/dts/exynos3250-rinato.dts
@@ -18,7 +18,8 @@

 / {
 	model = "Samsung Rinato board";
-	compatible = "samsung,rinato", "samsung,exynos3250", "samsung,exynos3";
+	compatible = "samsung,rinato", "samsung,rinato-rev06",
+			"samsung,exynos3250", "samsung,exynos3";

 	aliases {
 		i2c7 = &i2c_max77836;
-- 
1.9.1

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