[PATCH 5/7 v2] ARM: kirkwood: convert uart0 to devicetree.

[Jason Cooper]

This uart is the primary console for the dreamplug.  Removed
kirkwood_uart0_init() call from board-dreamplug.c.

There are two uarts on the kirkwood SoC, all or none of them may be
enabled, and the clock-frequency is board-dependant.  So, enabling and
clock-frequency are left to the board dts.

Signed-off-by: Jason Cooper <jason at lakedaemon.net>
---

Changes from v1:

* moved on-chip peripherals (uart's here) in kirkwood.dtsi and used ranges to
  simplify addressing
* disable uarts by default as not all boards enable them.  Can be enabled in
  board file
* specify clock-frequency in board file as it is board specific.  of_serial
  prints an error message if it isn't specified (view with earlyprintk)
* removed previous versions Reviewed-By's and Acked-By's as this is
  significantly different from the previous version.

 arch/arm/boot/dts/kirkwood-dreamplug.dts |    7 +++++++
 arch/arm/boot/dts/kirkwood.dtsi          |   26 +++++++++++++++++++++++++-
 arch/arm/mach-kirkwood/board-dreamplug.c |    2 --
 3 files changed, 32 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/kirkwood-dreamplug.dts b/arch/arm/boot/dts/kirkwood-dreamplug.dts
index 9946d01..a5376b8 100644
--- a/arch/arm/boot/dts/kirkwood-dreamplug.dts
+++ b/arch/arm/boot/dts/kirkwood-dreamplug.dts
@@ -14,4 +14,11 @@
 	chosen {
 		bootargs = "console=ttyS0,115200n8 earlyprintk";
 	};
+
+	ocp at f1000000 {
+		serial at 12000 {
+			clock-frequency = <200000000>;
+			status = "ok";
+		};
+	};
 };
diff --git a/arch/arm/boot/dts/kirkwood.dtsi b/arch/arm/boot/dts/kirkwood.dtsi
index 702b955..825310b 100644
--- a/arch/arm/boot/dts/kirkwood.dtsi
+++ b/arch/arm/boot/dts/kirkwood.dtsi
@@ -2,5 +2,29 @@
 
 / {
 	compatible = "mrvl,kirkwood";
-};
 
+	ocp at f1000000 {
+		compatible = "simple-bus";
+		ranges = <0 0xf1000000 0x1000000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		serial at 12000 {
+			compatible = "ns16550a";
+			reg = <0x12000 0x100>;
+			reg-shift = <2>;
+			interrupts = <33>;
+			/* set clock-frequency in board dts */
+			status = "disabled";
+		};
+
+		serial at 12100 {
+			compatible = "ns16550a";
+			reg = <0x12100 0x100>;
+			reg-shift = <2>;
+			interrupts = <34>;
+			/* set clock-frequency in board dts */
+			status = "disabled";
+		};
+	};
+};
diff --git a/arch/arm/mach-kirkwood/board-dreamplug.c b/arch/arm/mach-kirkwood/board-dreamplug.c
index 3b37315..3fbfb7d 100644
--- a/arch/arm/mach-kirkwood/board-dreamplug.c
+++ b/arch/arm/mach-kirkwood/board-dreamplug.c
@@ -135,8 +135,6 @@ void __init dreamplug_init(void)
 	 */
 	kirkwood_mpp_conf(dreamplug_mpp_config);
 
-	kirkwood_uart0_init();
-
 	spi_register_board_info(dreamplug_spi_slave_info,
 				ARRAY_SIZE(dreamplug_spi_slave_info));
 	kirkwood_spi_init();
-- 
1.7.3.4