ARM: SPEAr3xx: Add device-tree support to SPEAr3xx architecture

This patch adds a generic target for SPEAr3xx machines that can be configured
via the device-tree. Currently the following devices are supported via the
devicetree:

- VIC interrupts
- PL011 UART
- PL061 GPIO
- PL110 CLCD
- SP805 WDT
- Synopsys DW I2C
- Synopsys DW ethernet
- ST FSMC-NAND
- ST SPEAR-SMI
- ST SPEAR-KEYBOARD
- ST SPEAR-RTC
- ARASAN SDHCI-SPEAR
- SPEAR-EHCI
- SPEAR-OHCI

Other peripheral devices will follow in later patches.

This also removes IO_ADDRESS macro and creates 16 MB static mappings instead of
4K for individual peripherals. This is done to have efficient TLB lookup for any
I/O windows that are located closely together. ioremap() on this range will
return this mapping only instead of creating another.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>

1 files changed, 136 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/spear3xx.dtsi b/arch/arm/boot/dts/spear3xx.dtsi
new file mode 100644
index 000000000000..924a6f67ed05
--- /dev/null
+++ b/arch/arm/boot/dts/spear3xx.dtsi
@@ -0,0 +1,136 @@
+/*
+ * DTS file for all SPEAr3xx SoCs
+ *
+ * Copyright 2012 Viresh Kumar <viresh.kumar@st.com>
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+/include/ "skeleton.dtsi"
+
+/ {
+	interrupt-parent = <&vic>;
+
+	cpus {
+		cpu@0 {
+			compatible = "arm,arm926ejs";
+		};
+	};
+
+	memory {
+		device_type = "memory";
+		reg = <0 0x40000000>;
+	};
+
+	ahb {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "simple-bus";
+		ranges = <0xd0000000 0xd0000000 0x30000000>;
+
+		vic: interrupt-controller@f1100000 {
+			compatible = "arm,pl190-vic";
+			interrupt-controller;
+			reg = <0xf1100000 0x1000>;
+			#interrupt-cells = <1>;
+		};
+
+		gmac: eth@e0800000 {
+			compatible = "st,spear600-gmac";
+			reg = <0xe0800000 0x8000>;
+			interrupts = <23 22>;
+			interrupt-names = "macirq", "eth_wake_irq";
+			status = "disabled";
+		};
+
+		smi: flash@fc000000 {
+			compatible = "st,spear600-smi";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			reg = <0xfc000000 0x1000>;
+			interrupts = <9>;
+			status = "disabled";
+		};
+
+		spi0: spi@d0100000 {
+			compatible = "arm,pl022", "arm,primecell";
+			reg = <0xd0100000 0x1000>;
+			interrupts = <20>;
+			status = "disabled";
+		};
+
+		ehci@e1800000 {
+			compatible = "st,spear600-ehci", "usb-ehci";
+			reg = <0xe1800000 0x1000>;
+			interrupts = <26>;
+			status = "disabled";
+		};
+
+		ohci@e1900000 {
+			compatible = "st,spear600-ohci", "usb-ohci";
+			reg = <0xe1900000 0x1000>;
+			interrupts = <25>;
+			status = "disabled";
+		};
+
+		ohci@e2100000 {
+			compatible = "st,spear600-ohci", "usb-ohci";
+			reg = <0xe2100000 0x1000>;
+			interrupts = <27>;
+			status = "disabled";
+		};
+
+		apb {
+			#address-cells = <1>;
+			#size-cells = <1>;
+			compatible = "simple-bus";
+			ranges = <0xd0000000 0xd0000000 0x30000000>;
+
+			gpio0: gpio@fc980000 {
+				compatible = "arm,pl061", "arm,primecell";
+				reg = <0xfc980000 0x1000>;
+				interrupts = <11>;
+				gpio-controller;
+				#gpio-cells = <2>;
+				interrupt-controller;
+				#interrupt-cells = <2>;
+				status = "disabled";
+			};
+
+			i2c0: i2c@d0180000 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				compatible = "snps,designware-i2c";
+				reg = <0xd0180000 0x1000>;
+				interrupts = <21>;
+				status = "disabled";
+			};
+
+			rtc@fc900000 {
+				compatible = "st,spear-rtc";
+				reg = <0xfc900000 0x1000>;
+				interrupts = <10>;
+				status = "disabled";
+			};
+
+			serial@d0000000 {
+				compatible = "arm,pl011", "arm,primecell";
+				reg = <0xd0000000 0x1000>;
+				interrupts = <19>;
+				status = "disabled";
+			};
+
+			wdt@fc880000 {
+				compatible = "arm,sp805", "arm,primecell";
+				reg = <0xfc880000 0x1000>;
+				interrupts = <12>;
+				status = "disabled";
+			};
+		};
+	};
+};