[PATCH 6/16] ARM: Orion: DTify the watchdog timer.
From: andrew@lunn.ch (Andrew Lunn)
Date: 2012-07-20 17:35:41
Subsystem:
arm port, open firmware and flattened device tree bindings, the rest, watchdog device drivers · Maintainers:
Russell King, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds, Wim Van Sebroeck, Guenter Roeck
Add device tree support to the Orion watchdog timer, and enable its use in the kirkwood devices using device tree. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Acked-by: Sebastian Hesselbarth <redacted> Tested-by: Simon Baatz <redacted> --- Documentation/devicetree/bindings/watchdog/marvel.txt | 14 ++++++++++++++ arch/arm/boot/dts/kirkwood.dtsi | 6 ++++++ arch/arm/mach-kirkwood/board-dt.c | 2 +- drivers/watchdog/orion_wdt.c | 8 ++++++++ 4 files changed, 29 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/watchdog/marvel.txt
diff --git a/Documentation/devicetree/bindings/watchdog/marvel.txt b/Documentation/devicetree/bindings/watchdog/marvel.txt
new file mode 100644
index 0000000..0b2503a
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/marvel.txt@@ -0,0 +1,14 @@ +* Marvell Orion Watchdog Time + +Required Properties: + +- Compatibility : "marvell,orion-wdt" +- reg : Address of the timer registers + +Example: + + wdt at 20300 { + compatible = "marvell,orion-wdt"; + reg = <0x20300 0x28>; + status = "okay"; + };
diff --git a/arch/arm/boot/dts/kirkwood.dtsi b/arch/arm/boot/dts/kirkwood.dtsi
index e13d746..3e0e9b9 100644
--- a/arch/arm/boot/dts/kirkwood.dtsi
+++ b/arch/arm/boot/dts/kirkwood.dtsi@@ -70,6 +70,12 @@ status = "disabled"; }; + wdt at 20300 { + compatible = "marvell,orion-wdt"; + reg = <0x20300 0x28>; + status = "okay"; + }; + nand at 3000000 { #address-cells = <1>; #size-cells = <1>;
diff --git a/arch/arm/mach-kirkwood/board-dt.c b/arch/arm/mach-kirkwood/board-dt.c
index b7cd6d2..73e75cf 100644
--- a/arch/arm/mach-kirkwood/board-dt.c
+++ b/arch/arm/mach-kirkwood/board-dt.c@@ -30,6 +30,7 @@ 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), + OF_DEV_AUXDATA("marvell,orion-wdt", 0xf1020300, "orion_wdt", NULL), {}, };
@@ -55,7 +56,6 @@ static void __init kirkwood_dt_init(void) kirkwood_clk_init(); /* internal devices that every board has */ - kirkwood_wdt_init(); kirkwood_xor0_init(); kirkwood_xor1_init(); kirkwood_crypto_init();
diff --git a/drivers/watchdog/orion_wdt.c b/drivers/watchdog/orion_wdt.c
index 0f57369..1531e02 100644
--- a/drivers/watchdog/orion_wdt.c
+++ b/drivers/watchdog/orion_wdt.c@@ -25,6 +25,7 @@ #include <linux/io.h> #include <linux/spinlock.h> #include <linux/clk.h> +#include <linux/of.h> #include <mach/bridge-regs.h> /*
@@ -295,6 +296,12 @@ static void orion_wdt_shutdown(struct platform_device *pdev) orion_wdt_disable(); } +static const struct of_device_id orion_wdt_of_match_table[] __devinitdata = { + { .compatible = "marvell,orion-wdt", }, + {}, +}; +MODULE_DEVICE_TABLE(of, orion_wdt_of_match_table); + static struct platform_driver orion_wdt_driver = { .probe = orion_wdt_probe, .remove = __devexit_p(orion_wdt_remove),
@@ -302,6 +309,7 @@ static struct platform_driver orion_wdt_driver = { .driver = { .owner = THIS_MODULE, .name = "orion_wdt", + .of_match_table = of_match_ptr(orion_wdt_of_match_table), }, };
--
1.7.10