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authorBarry Song <Barry.Song@csr.com>2011-10-24 02:40:40 -0700
committerBarry Song <Barry.Song@csr.com>2011-10-24 02:45:43 -0700
commit1e11bec9b09a28f81dd3173fec6b1c6c56b5e299 (patch)
treecddb92f82bda3a5f362bb6d9f775d25dd1205e6b /Documentation
parent2558bd99cb1426a05ac8f1c78dc9c75a83ceb4bb (diff)
parent91c2ebb90b1890abc648ba9dec5608cbc97e1cb9 (diff)
Merge branch 'l2x0' of rmk tree into prima2-l2x0
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/arm/l2cc.txt44
-rw-r--r--Documentation/hwmon/max160657
2 files changed, 51 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/l2cc.txt b/Documentation/devicetree/bindings/arm/l2cc.txt
new file mode 100644
index 00000000000..7ca52161e7a
--- /dev/null
+++ 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>;
+};
diff --git a/Documentation/hwmon/max16065 b/Documentation/hwmon/max16065
index 44b4f61e04f..c11f64a1f2a 100644
--- a/Documentation/hwmon/max16065
+++ b/Documentation/hwmon/max16065
@@ -62,6 +62,13 @@ can be safely used to identify the chip. You will have to instantiate
the devices explicitly. Please see Documentation/i2c/instantiating-devices for
details.
+WARNING: Do not access chip registers using the i2cdump command, and do not use
+any of the i2ctools commands on a command register (0xa5 to 0xac). The chips
+supported by this driver interpret any access to a command register (including
+read commands) as request to execute the command in question. This may result in
+power loss, board resets, and/or Flash corruption. Worst case, your board may
+turn into a brick.
+
Sysfs entries
-------------