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Commit 750f0b53 authored by Junjie Wu's avatar Junjie Wu
Browse files

qcom-cpufreq: Add support for separate governor tunables per policy 



CPUs under different policies might need different governor tunables
on certain targets. Enable support for this feature by parsing
"qcom,governor-per-policy" DT property.

Change-Id: I670135822d67d392030b54f40feab9a3aef11542
Signed-off-by: default avatarJunjie Wu <junjiew@codeaurora.org>
parent 962ed456

Documentation/devicetree/bindings/arm/msm/msm-cpufreq.txt

+5 −0
Original line number Diff line number Diff line
@@ -14,6 +14,11 @@ Optional properties: 
			"cpuX_clk" for every CPU that's present.

			"l2_clk" when an async cache/CCI is present.



Optional properties:

- qcom,governor-per-policy:	This property denotes that governor tunables

				should be associated with each cpufreq policy

				group instead of being global.



Example:

	qcom,msm-cpufreq@0 {

		regs = <0 4>

drivers/cpufreq/qcom-cpufreq.c

+4 −0
Original line number Diff line number Diff line
@@ -446,6 +446,10 @@ static int __init msm_cpufreq_probe(struct platform_device *pdev) 
		cpufreq_frequency_table_get_attr(freq_table, cpu);

	}



	/* Use per-policy governor tunable for some targets */

	if (of_property_read_bool(dev->of_node, "qcom,governor-per-policy"))

		msm_cpufreq_driver.flags |= CPUFREQ_HAVE_GOVERNOR_PER_POLICY;



	return 0;

}