linux-kernel - [PATCH] arm: rpi: Device tree modifications for U-Boot

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Date:	Tue, 11 Aug 2015 08:25:53 -0600
From:	Simon Glass <sjg@...omium.org>
To:	linux-tegra@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc:	Stephen Warren <swarren@...dotorg.org>,
	Stephen Warren <swarren@...dia.com>,
	Simon Glass <sjg@...omium.org>,
	Russell King <linux@....linux.org.uk>,
	Lee Jones <lee@...nel.org>, devicetree@...r.kernel.org,
	Kumar Gala <galak@...eaurora.org>,
	linux-kernel@...r.kernel.org,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Rob Herring <robh+dt@...nel.org>,
	linux-rpi-kernel@...ts.infradead.org,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>
Subject: [PATCH] arm: rpi: Device tree modifications for U-Boot

This updates the device tree from the kernel version to something suitable
for U-Boot:

- Add stdout-path alias for console
- Mark the /soc node to be available pre-relocation so that the early
serial console works (we need the 'ranges' property to be available)

Signed-off-by: Simon Glass <sjg@...omium.org>
---

 arch/arm/boot/dts/bcm2835.dtsi | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/bcm2835.dtsi b/arch/arm/boot/dts/bcm2835.dtsi
index 301c73f..bd6bff6 100644
--- a/arch/arm/boot/dts/bcm2835.dtsi
+++ b/arch/arm/boot/dts/bcm2835.dtsi
@@ -8,6 +8,7 @@
 
 	chosen {
 		bootargs = "earlyprintk console=ttyAMA0";
+		stdout-path = &uart;
 	};
 
 	soc {
@@ -16,6 +17,7 @@
 		#size-cells = <1>;
 		ranges = <0x7e000000 0x20000000 0x02000000>;
 		dma-ranges = <0x40000000 0x00000000 0x20000000>;
+		u-boot,dm-pre-reloc;
 
 		timer@...03000 {
 			compatible = "brcm,bcm2835-system-timer";
@@ -92,7 +94,7 @@
 			#interrupt-cells = <2>;
 		};
 
-		uart@...01000 {
+		uart: uart@...01000 {
 			compatible = "brcm,bcm2835-pl011", "arm,pl011", "arm,primecell";
 			reg = <0x7e201000 0x1000>;
 			interrupts = <2 25>;
-- 
2.5.0.rc2.392.g76e840b

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