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authorArnd Bergmann <arnd@arndb.de>2011-11-02 02:46:10 +0100
committerArnd Bergmann <arnd@arndb.de>2011-11-02 02:46:10 +0100
commit884897e6a10a86de0e611a76f4bf3fd0068a672c (patch)
tree019689fb9d129404af1efba4df10975bc9e0a57a /Documentation/devicetree
parentc72dbae971400e466ad9ff16c920cd6d9d8c55a1 (diff)
parent8b61f37440388ebbd2a894178fe098f2e70ab392 (diff)
downloadop-kernel-dev-884897e6a10a86de0e611a76f4bf3fd0068a672c.zip
op-kernel-dev-884897e6a10a86de0e611a76f4bf3fd0068a672c.tar.gz
Merge branch 'highbank/soc' into next/soc
Conflicts: arch/arm/mach-mxs/include/mach/gpio.h arch/arm/mach-omap2/board-generic.c arch/arm/plat-mxc/include/mach/gpio.h
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/arm/calxeda.txt8
-rw-r--r--Documentation/devicetree/bindings/arm/l2cc.txt44
2 files changed, 52 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/calxeda.txt b/Documentation/devicetree/bindings/arm/calxeda.txt
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index 0000000..4755caa
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/calxeda.txt
@@ -0,0 +1,8 @@
+Calxeda Highbank Platforms Device Tree Bindings
+-----------------------------------------------
+
+Boards with Calxeda Cortex-A9 based Highbank SOC shall have the following
+properties.
+
+Required root node properties:
+ - compatible = "calxeda,highbank";
diff --git a/Documentation/devicetree/bindings/arm/l2cc.txt b/Documentation/devicetree/bindings/arm/l2cc.txt
new file mode 100644
index 0000000..7ca5216
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+++ b/Documentation/devicetree/bindings/arm/l2cc.txt
@@ -0,0 +1,44 @@
+* ARM L2 Cache Controller
+
+ARM cores often have a separate level 2 cache controller. There are various
+implementations of the L2 cache controller with compatible programming models.
+The ARM L2 cache representation in the device tree should be done as follows:
+
+Required properties:
+
+- compatible : should be one of:
+ "arm,pl310-cache"
+ "arm,l220-cache"
+ "arm,l210-cache"
+- cache-unified : Specifies the cache is a unified cache.
+- cache-level : Should be set to 2 for a level 2 cache.
+- reg : Physical base address and size of cache controller's memory mapped
+ registers.
+
+Optional properties:
+
+- arm,data-latency : Cycles of latency for Data RAM accesses. Specifies 3 cells of
+ read, write and setup latencies. Minimum valid values are 1. Controllers
+ without setup latency control should use a value of 0.
+- arm,tag-latency : Cycles of latency for Tag RAM accesses. Specifies 3 cells of
+ read, write and setup latencies. Controllers without setup latency control
+ should use 0. Controllers without separate read and write Tag RAM latency
+ values should only use the first cell.
+- arm,dirty-latency : Cycles of latency for Dirty RAMs. This is a single cell.
+- arm,filter-ranges : <start length> Starting address and length of window to
+ filter. Addresses in the filter window are directed to the M1 port. Other
+ addresses will go to the M0 port.
+- interrupts : 1 combined interrupt.
+
+Example:
+
+L2: cache-controller {
+ compatible = "arm,pl310-cache";
+ reg = <0xfff12000 0x1000>;
+ arm,data-latency = <1 1 1>;
+ arm,tag-latency = <2 2 2>;
+ arm,filter-latency = <0x80000000 0x8000000>;
+ cache-unified;
+ cache-level = <2>;
+ interrupts = <45>;
+};
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