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author | Sascha Hauer <s.hauer@pengutronix.de> | 2015-07-08 14:44:21 +0200 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2015-07-08 14:44:21 +0200 |
commit | 87360e3dd42bb627a9f2611f961728c0789e1c21 (patch) | |
tree | afefc88c862d9feafb0cdb075badeb8d32d8efd2 /dts/Bindings/hwlock/qcom-hwspinlock.txt | |
parent | 80936d6aaeea1b10ce4eb81c54eece2f55f8e209 (diff) | |
download | barebox-87360e3dd42bb627a9f2611f961728c0789e1c21.tar.gz barebox-87360e3dd42bb627a9f2611f961728c0789e1c21.tar.xz |
dts: update to v4.2-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/hwlock/qcom-hwspinlock.txt')
-rw-r--r-- | dts/Bindings/hwlock/qcom-hwspinlock.txt | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/dts/Bindings/hwlock/qcom-hwspinlock.txt b/dts/Bindings/hwlock/qcom-hwspinlock.txt new file mode 100644 index 0000000000..4563f52455 --- /dev/null +++ b/dts/Bindings/hwlock/qcom-hwspinlock.txt @@ -0,0 +1,39 @@ +Qualcomm Hardware Mutex Block: + +The hardware block provides mutexes utilized between different processors on +the SoC as part of the communication protocol used by these processors. + +- compatible: + Usage: required + Value type: <string> + Definition: must be one of: + "qcom,sfpb-mutex", + "qcom,tcsr-mutex" + +- syscon: + Usage: required + Value type: <prop-encoded-array> + Definition: one cell containing: + syscon phandle + offset of the hwmutex block within the syscon + stride of the hwmutex registers + +- #hwlock-cells: + Usage: required + Value type: <u32> + Definition: must be 1, the specified cell represent the lock id + (hwlock standard property, see hwlock.txt) + +Example: + + tcsr_mutex_block: syscon@fd484000 { + compatible = "syscon"; + reg = <0xfd484000 0x2000>; + }; + + hwlock@fd484000 { + compatible = "qcom,tcsr-mutex"; + syscon = <&tcsr_mutex_block 0 0x80>; + + #hwlock-cells = <1>; + }; |