ARM: Orion: Add arch support needed for I2C via DT.

The MV64XXX I2C driver needs a clock in order to calculate the baud
rate factors. So add an clk to the clk tree. Also add the base DT
properties for kirkwood devices.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>

Conflicts:
	arch/arm/mach-kirkwood/common.c

4 files changed, 15 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/kirkwood.dtsi b/arch/arm/boot/dts/kirkwood.dtsi
index 3aaad7d147de..3df24cd03c07 100644
--- a/arch/arm/boot/dts/kirkwood.dtsi
+++ b/arch/arm/boot/dts/kirkwood.dtsi
@@ -82,5 +82,15 @@
                         /* set partition map and/or chip-delay in board dts */
                         status = "disabled";
                 };
+
+                i2c@11000 {
+                        compatible = "marvell,mv64xxx-i2c";
+                        reg = <0x11000 0x20>;
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                        interrupts = <29>;
+                        clock-frequency = <100000>;
+                        status = "disabled";
+                };
         };
 };
diff --git a/arch/arm/mach-kirkwood/board-dt.c b/arch/arm/mach-kirkwood/board-dt.c
index 8f8da5d9a8dd..24c8fdd174d1 100644
--- a/arch/arm/mach-kirkwood/board-dt.c
+++ b/arch/arm/mach-kirkwood/board-dt.c
@@ -28,6 +28,8 @@ static struct of_device_id kirkwood_dt_match_table[] __initdata = {
 
 struct of_dev_auxdata kirkwood_auxdata_lookup[] __initdata = {
         OF_DEV_AUXDATA("marvell,orion-spi", 0xf1010600, "orion_spi.0", NULL),
+        OF_DEV_AUXDATA("marvell,mv64xxx-i2c", 0xf1011000, "mv64xxx_i2c.0",
+                       NULL),
         {},
 };
 
diff --git a/arch/arm/mach-kirkwood/common.c b/arch/arm/mach-kirkwood/common.c
index c9201539ffbd..c4b64adcbfce 100644
--- a/arch/arm/mach-kirkwood/common.c
+++ b/arch/arm/mach-kirkwood/common.c
@@ -17,6 +17,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/clk-provider.h>
 #include <linux/spinlock.h>
+#include <linux/mv643xx_i2c.h>
 #include <net/dsa.h>
 #include <asm/page.h>
 #include <asm/timex.h>
@@ -276,6 +277,7 @@ void __init kirkwood_clk_init(void)
         orion_clkdev_add("0", "pcie", pex0);
         orion_clkdev_add("1", "pcie", pex1);
         orion_clkdev_add(NULL, "kirkwood-i2s", audio);
+        orion_clkdev_add(NULL, MV64XXX_I2C_CTLR_NAME ".0", runit);
 
         /* Marvell says runit is used by SPI, UART, NAND, TWSI, ...,
          * so should never be gated.
diff --git a/arch/arm/plat-orion/common.c b/arch/arm/plat-orion/common.c
index c1793786aea9..d245a87dc014 100644
--- a/arch/arm/plat-orion/common.c
+++ b/arch/arm/plat-orion/common.c
@@ -47,6 +47,7 @@ void __init orion_clkdev_init(struct clk *tclk)
         orion_clkdev_add(NULL, MV643XX_ETH_NAME ".2", tclk);
         orion_clkdev_add(NULL, MV643XX_ETH_NAME ".3", tclk);
         orion_clkdev_add(NULL, "orion_wdt", tclk);
+        orion_clkdev_add(NULL, MV64XXX_I2C_CTLR_NAME ".0", tclk);
 }
 
 /* Fill in the resources structure and link it into the platform