arm: orion5x: basic Device Tree support

This commit adds basic DT support for the Orion5x SoC family. It adds
an orion5x.dtsi description of the Orion5x SoC as well as the needed
DT_MACHINE structure to support boards converted to DT in the future.

So far, the Device Tree contains the interrupt controller, the GPIO
bank, the UART controllers, the SPI controller, the watchdog, the SATA
controller, the I2C controller and the cryptographic engine.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested by: Maxime Hadjinlian <mhadjinlian@lacie.com>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

1 files changed, 7 insertions, 0 deletions

diff --git a/arch/arm/mach-orion5x/Kconfig b/arch/arm/mach-orion5x/Kconfig
index 0673f0c10432..0910c3bd0c99 100644
--- a/arch/arm/mach-orion5x/Kconfig
+++ b/arch/arm/mach-orion5x/Kconfig
@@ -2,6 +2,13 @@ if ARCH_ORION5X
 
 menu "Orion Implementations"
 
+config ARCH_ORION5X_DT
+        bool "Marvell Orion5x Flattened Device Tree"
+        select USE_OF
+        help
+          Say 'Y' here if you want your kernel to support the
+          Marvell Orion5x using flattened device tree.
+
 config MACH_DB88F5281
         bool "Marvell Orion-2 Development Board"
         select I2C_BOARDINFO