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- From 236d07c7bb0c758ea40ea0110d37306d2e7d9a4b Mon Sep 17 00:00:00 2001
- From: Rohit Vaswani <[email protected]>
- Date: Thu, 31 Oct 2013 17:26:33 -0700
- Subject: [PATCH 010/182] devicetree: bindings: Document Krait/Scorpion cpus
- and enable-method
- Scorpion and Krait don't use the spin-table enable-method.
- Instead they rely on mmio register accesses to enable power and
- clocks to bring CPUs out of reset. Document their enable-methods.
- Cc: <[email protected]>
- Signed-off-by: Rohit Vaswani <[email protected]>
- [sboyd: Split off into separate patch, renamed methods to
- match compatible nodes]
- Signed-off-by: Stephen Boyd <[email protected]>
- Signed-off-by: Kumar Gala <[email protected]>
- ---
- Documentation/devicetree/bindings/arm/cpus.txt | 25 +++++++++++++++++++++++-
- 1 file changed, 24 insertions(+), 1 deletion(-)
- --- a/Documentation/devicetree/bindings/arm/cpus.txt
- +++ b/Documentation/devicetree/bindings/arm/cpus.txt
- @@ -180,7 +180,11 @@ nodes to be present and contain the prop
- be one of:
- "spin-table"
- "psci"
- - # On ARM 32-bit systems this property is optional.
- + # On ARM 32-bit systems this property is optional and
- + can be one of:
- + "qcom,gcc-msm8660"
- + "qcom,kpss-acc-v1"
- + "qcom,kpss-acc-v2"
-
- - cpu-release-addr
- Usage: required for systems that have an "enable-method"
- @@ -191,6 +195,21 @@ nodes to be present and contain the prop
- property identifying a 64-bit zero-initialised
- memory location.
-
- + - qcom,saw
- + Usage: required for systems that have an "enable-method"
- + property value of "qcom,kpss-acc-v1" or
- + "qcom,kpss-acc-v2"
- + Value type: <phandle>
- + Definition: Specifies the SAW[1] node associated with this CPU.
- +
- + - qcom,acc
- + Usage: required for systems that have an "enable-method"
- + property value of "qcom,kpss-acc-v1" or
- + "qcom,kpss-acc-v2"
- + Value type: <phandle>
- + Definition: Specifies the ACC[2] node associated with this CPU.
- +
- +
- Example 1 (dual-cluster big.LITTLE system 32-bit):
-
- cpus {
- @@ -382,3 +401,7 @@ cpus {
- cpu-release-addr = <0 0x20000000>;
- };
- };
- +
- +--
- +[1] arm/msm/qcom,saw2.txt
- +[2] arm/msm/qcom,kpss-acc.txt
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