Add device tree data for AM33XX devices

Add pinctrl and d_can device tree data to AM33XX family of devices. First two patches add support for pinctrl DT data and rest adds dcan DT data.

Reason behind combining these patches is to apply cleanly on linux-omap devel-dt tree because these are sequential patches.

These patches were tested on AM335x-Bone and AM335x-EVM apply on linux-omap:devel-dt tree with this patch
http://lkml.org/lkml/2012/8/15/106

AnilKumar Ch (4):
arm/dts: AM33XX: Add basic pinctrl device tree data arm/dts: AM33XX: Configure pinmuxs for user leds control on Bone arm/dts: AM33XX: Configure pinmuxs for D_CAN1 on AM335x-EVM arm/dts: AM33XX: Add D_CAN device tree data

 arch/arm/boot/dts/am335x-bone.dts |   14 ++++++++++++++
 arch/arm/boot/dts/am335x-evm.dts  |   16 ++++++++++++++++
 arch/arm/boot/dts/am33xx.dtsi     |   27 +++++++++++++++++++++++++++
 3 files changed, 57 insertions(+)

1.7.9.5

Adds basic pinctrl device tree data for AM33XX family of devices. This patch is based on the pinctrl-single driver.

---
Changes from v3:
- Updated the reg length based on latest AM335x TRM.

Changes from v2:
- user led pinmux comments updated according to Tony's comment.

Changes from v1:
- Rebased the patches based on latest pinctrl-single driver

 arch/arm/boot/dts/am33xx.dtsi |    9 +++++++++
 1 file changed, 9 insertions(+)

index dde76f7..dfe9c559 100644
@@ -40,6 +40,15 @@
 		};
 	};
 
+	am3358_pinmux: pinmux at 44E10800 {
+		compatible = "pinctrl-single";
+		reg = <0x44E10800 0x0238>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		pinctrl-single,register-width = <32>;
+		pinctrl-single,function-mask = <0x7F>;
+	};
+
 	/*
 	 * XXX: Use a flat representation of the AM33XX interconnect.
 	 * The real AM33XX interconnect network is quite complex.Since

1.7.9.5

Adds GPIO pinctrl nodes to am3358_pinmux master node to control user leds (USR0, USR1, USR2 and USR3) present on BeagleBone.

---
 arch/arm/boot/dts/am335x-bone.dts |   14 ++++++++++++++
 1 file changed, 14 insertions(+)

index a7906cb..58f5042 100644
@@ -18,6 +18,20 @@
 		reg = <0x80000000 0x10000000>; /* 256 MB */
 	};
 
+	am3358_pinmux: pinmux at 44E10800 {
+		pinctrl-names = "default";
+		pinctrl-0 = <&userled_pins>;
+
+		userled_pins: pinmux_userled_pins {
+			pinctrl-single,pins = <
+				0x54 0x7	/* gpmc_a5.gpio1_21, OUTPUT | MODE7 */
+				0x58 0x17	/* gpmc_a6.gpio1_22, OUTPUT_PULLUP | MODE7 */
+				0x5C 0x7	/* gpmc_a7.gpio1_23, OUTPUT | MODE7 */
+				0x60 0x17	/* gpmc_a8.gpio1_24, OUTPUT_PULLUP | MODE7 */
+			>;
+		};
+	};
+
 	ocp {
 		uart1: serial at 44E09000 {
 			status = "okay";

1.7.9.5

Add D_CAN1 pinctrl node to am3358_pinmux master node to export D_CAN functionality on AM335x EVM according to pinctrl-single driver.

---
Changes from v2:
- Incorporated Vaibhav H's comments on v2
* Added dcan0 instances to am33xx.dtsi file

Changes from v1:
- These two patches separated from c_can DT support patch series.

 arch/arm/boot/dts/am335x-evm.dts |   12 ++++++++++++
 1 file changed, 12 insertions(+)

index 5dd8a6b..a64c30a 100644
@@ -18,6 +18,18 @@
 		reg = <0x80000000 0x10000000>; /* 256 MB */
 	};
 
+	am3358_pinmux: pinmux at 44E10800 {
+		pinctrl-names = "default";
+		pinctrl-0 = <&d_can1_pins>;
+
+		d_can1_pins: pinmux_d_can_pins {
+			pinctrl-single,pins = <
+				0x168 0x2	/* uart0_ctsn.d_can1_tx, OUTPUT | MODE2 */
+				0x16C 0x32	/* uart0_rtsn.d_can1_rx, INPUT_PULLUP | MODE2 */
+			>;
+		};
+	};
+
 	ocp {
 		uart1: serial at 44E09000 {
 			status = "okay";

1.7.9.5

I think it won't work this way, it will result into syntax error. The reason being is, unlike OMAP (and like other platforms, like, imx) here we are again representing device hierarchy starting from root,

am335x-evm.dts:
/ {

	ocp {
		...
	};

};

Although I am not too familiar with DTS compiler, but below code results in syntax error:

am335x-evm.dts:
/ {

	ocp {
		...
		&am3358_pinmux {
			...
		};
	};

};

Thanks,
Vaibhav

Add Bosch D_CAN controller device tree data to AM33XX dtsi file by adding d_can device nodes with all the necessary parameters.

---
 arch/arm/boot/dts/am335x-evm.dts |    4 ++++
 arch/arm/boot/dts/am33xx.dtsi    |   18 ++++++++++++++++++
 2 files changed, 22 insertions(+)

index a64c30a..1e1fc15 100644
@@ -34,5 +34,9 @@
 		uart1: serial at 44E09000 {
 			status = "okay";
 		};
+
+		dcan1: d_can at 481D0000 {
+			status = "okay";
+		};
 	};
 };

index dfe9c559..d965137 100644
@@ -177,5 +177,23 @@
 			compatible = "ti,omap3-wdt";
 			ti,hwmods = "wd_timer2";
 		};
+
+		dcan0: d_can at 481CC000 {
+			compatible = "bosch,d_can";
+			ti,hwmods = "d_can0";
+			reg = <0x481CC000 0x2000>;
+			interrupts = <52>;
+			interrupt-parent = <&intc>;
+			status = "disabled";
+		};
+
+		dcan1: d_can at 481D0000 {
+			compatible = "bosch,d_can";
+			ti,hwmods = "d_can1";
+			reg = <0x481D0000 0x2000>;
+			interrupts = <55>;
+			interrupt-parent = <&intc>;
+			status = "disabled";
+		};
 	};
 };

1.7.9.5