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Merge "dt-bindings: cpufreq-hw-debug: Introduce bindings for cpufreq hw debug"

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qctecmdr 2020-07-28 03:50:31 -07:00 • committed by Gerrit - the friendly Code Review server
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bindings/cpufreq/cpufreq-qcom-hw-debug.txt Normal file
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Qualcomm Technologies, Inc. CPUFREQ Hardware Debug Bindings
--------------------------------------------------------------------
CPUFREQ HW debug provide support to print the CPUFREQ_HW debug
registers.
Required Properties:
- compatible: shall contain the following:
"qcom,cpufreq-hw-debug" or "qcom,cpufreq-hw-epss-debug".
- reg: shall contain base register location and length.
- reg-names: shall contain the frequency domain name.
Optional Properties:
- qcom,freq-hw-domain: phandle to the frequency domain device node.
Usage :
The following debug node would get created under qcom-cpufreq-hw directory.
- print_cpufreq_debug_regs
Function: Print cpufreq hardware debug registers
Input: cat print_cpufreq_debug_regs
Example:
cpufreq_hw_debug: qcom,cpufreq-hw-debug@18591000 {
compatible = "qcom,cpufreq-hw-debug";
reg = <0x18591000 0x800>;
reg-names = "domain-top";
qcom,freq-hw-domain = <&cpufreq_hw 0>, <&cpufreq_hw 1>,
<&cpufreq_hw 2>;
};