cpufreq: dt: Add support for interconnect bandwidth scaling

In addition to clocks and regulators, some devices can scale the bandwidth
of their on-chip interconnect - for example between CPU and DDR memory. Add
support for that, so that platforms which support it can make use of it.

Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
[ Viresh: Reused dev_pm_opp_of_find_icc_paths(). Also drop the depends
	  on from Kconfig. ]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
fixup! cpufreq: dt: Add support for interconnect bandwidth scaling

diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c
index 26fe8df..79742bb 100644 (file)
--- a/drivers/cpufreq/cpufreq-dt.c
+++ b/drivers/cpufreq/cpufreq-dt.c
@@ -121,6 +121,10 @@ static int resources_available(void)
 
        clk_put(cpu_clk);
 
+       ret = dev_pm_opp_of_find_icc_paths(cpu_dev, NULL);
+       if (ret)
+               return ret;
+
        name = find_supply_name(cpu_dev);
        /* Platform doesn't require regulator */
        if (!name)