Merge tag 'davinci-for-v3.9/dt-2' of git://gitorious.org/linux-davinc…

…i/linux-davinci into next/dt From Sekhar Nori: Second round of DT updates for DaVinci. This pull request adds support for I2C0 and watchdog timer for DA850 EVM booting using device tree. It also enables machine reboot when using device tree. * tag 'davinci-for-v3.9/dt-2' of git://gitorious.org/linux-davinci/linux-davinci: ARM: davinci: da850 DT: add support for machine reboot ARM: davinci: da850: add wdt DT node ARM: davinci: da850: add DT node for I2C0
git-mirror · Feb 10, 2013 · 93ce285 · 93ce285
2 parents 13c5d51 + 19c7c0d
commit 93ce285
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Showing 5 changed files with 46 additions and 4 deletions.
diff --git a/arch/arm/boot/dts/da850-evm.dts b/arch/arm/boot/dts/da850-evm.dts
@@ -30,6 +30,15 @@
 		rtc0: rtc@1c23000 {
 			status = "okay";
 		};
+		i2c0: i2c@1c22000 {
+			status = "okay";
+			clock-frequency = <100000>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&i2c0_pins>;
+		};
+		wdt: wdt@1c21000 {
+			status = "okay";
+		};
 	};
 	nand_cs3@62000000 {
 		status = "okay";

diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
@@ -56,6 +56,12 @@
 					0x30 0x01100000  0x0ff00000
 				>;
 			};
+			i2c0_pins: pinmux_i2c0_pins {
+				pinctrl-single,bits = <
+					/* I2C0_SDA,I2C0_SCL */
+					0x10 0x00002200 0x0000ff00
+				>;
+			};
 		};
 		serial0: serial@1c42000 {
 			compatible = "ns16550a";
@@ -88,6 +94,19 @@
 				      19>;
 			status = "disabled";
 		};
+		i2c0: i2c@1c22000 {
+			compatible = "ti,davinci-i2c";
+			reg = <0x22000 0x1000>;
+			interrupts = <15>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+		wdt: wdt@1c21000 {
+			compatible = "ti,davinci-wdt";
+			reg = <0x21000 0x1000>;
+			status = "disabled";
+		};
 	};
 	nand_cs3@62000000 {
 		compatible = "ti,davinci-nand";

diff --git a/arch/arm/mach-davinci/da8xx-dt.c b/arch/arm/mach-davinci/da8xx-dt.c
@@ -37,11 +37,18 @@ static void __init da8xx_init_irq(void)
 	of_irq_init(da8xx_irq_match);
 }
 
+struct of_dev_auxdata da850_auxdata_lookup[] __initdata = {
+	OF_DEV_AUXDATA("ti,davinci-i2c", 0x01c22000, "i2c_davinci.1", NULL),
+	OF_DEV_AUXDATA("ti,davinci-wdt", 0x01c21000, "watchdog", NULL),
+	{}
+};
+
 #ifdef CONFIG_ARCH_DAVINCI_DA850
 
 static void __init da850_init_machine(void)
 {
-	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+	of_platform_populate(NULL, of_default_bus_match_table,
+			     da850_auxdata_lookup, NULL);
 
 	da8xx_uart_clk_enable();
 }

diff --git a/arch/arm/mach-davinci/devices-da8xx.c b/arch/arm/mach-davinci/devices-da8xx.c
@@ -359,7 +359,7 @@ static struct resource da8xx_watchdog_resources[] = {
 	},
 };
 
-struct platform_device da8xx_wdt_device = {
+static struct platform_device da8xx_wdt_device = {
 	.name		= "watchdog",
 	.id		= -1,
 	.num_resources	= ARRAY_SIZE(da8xx_watchdog_resources),
@@ -368,7 +368,15 @@ struct platform_device da8xx_wdt_device = {
 
 void da8xx_restart(char mode, const char *cmd)
 {
-	davinci_watchdog_reset(&da8xx_wdt_device);
+	struct device *dev;
+
+	dev = bus_find_device_by_name(&platform_bus_type, NULL, "watchdog");
+	if (!dev) {
+		pr_err("%s: failed to find watchdog device\n", __func__);
+		return;
+	}
+
+	davinci_watchdog_reset(to_platform_device(dev));
 }
 
 int __init da8xx_register_watchdog(void)

diff --git a/arch/arm/mach-davinci/include/mach/da8xx.h b/arch/arm/mach-davinci/include/mach/da8xx.h
@@ -110,7 +110,6 @@ extern struct emac_platform_data da8xx_emac_pdata;
 extern struct da8xx_lcdc_platform_data sharp_lcd035q3dg01_pdata;
 extern struct da8xx_lcdc_platform_data sharp_lk043t1dg01_pdata;
 
-extern struct platform_device da8xx_wdt_device;
 
 extern const short da830_emif25_pins[];
 extern const short da830_spi0_pins[];