Commit 1bf8cc3d authored by Viresh Kumar's avatar Viresh Kumar Committed by Rafael J. Wysocki

cpufreq: cpu0: OPPs can be populated at runtime

OPPs can be populated statically, via DT, or added at run time with
dev_pm_opp_add().

While this driver handles the first case correctly, it would fail to populate
OPPs added at runtime. Because call to of_init_opp_table() would fail as there
are no OPPs in DT and probe will return early.

To fix this, remove error checking and call dev_pm_opp_init_cpufreq_table()
unconditionally.

Update bindings as well.
Suggested-by: default avatarStephen Boyd <sboyd@codeaurora.org>
Tested-by: default avatarStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Acked-by: default avatarSantosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 2fa1adc0
......@@ -8,10 +8,12 @@ Both required and optional properties listed below must be defined
under node /cpus/cpu@0.
Required properties:
- operating-points: Refer to Documentation/devicetree/bindings/power/opp.txt
for details
- None
Optional properties:
- operating-points: Refer to Documentation/devicetree/bindings/power/opp.txt for
details. OPPs *must* be supplied either via DT, i.e. this property, or
populated at runtime.
- clock-latency: Specify the possible maximum transition latency for clock,
in unit of nanoseconds.
- voltage-tolerance: Specify the CPU voltage tolerance in percentage.
......
......@@ -152,11 +152,8 @@ static int cpu0_cpufreq_probe(struct platform_device *pdev)
goto out_put_reg;
}
ret = of_init_opp_table(cpu_dev);
if (ret) {
pr_err("failed to init OPP table: %d\n", ret);
goto out_put_clk;
}
/* OPPs might be populated at runtime, don't check for error here */
of_init_opp_table(cpu_dev);
ret = dev_pm_opp_init_cpufreq_table(cpu_dev, &freq_table);
if (ret) {
......
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