linux-kernel - [PATCH] cpufreq: dt-platdev: Add devices covered by ti-cpufreq to blacklist

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Date:   Tue, 19 Sep 2017 09:57:30 -0500
From:   Dave Gerlach <d-gerlach@...com>
To:     Viresh Kumar <viresh.kumar@...aro.org>,
        "Rafael J . Wysocki" <rjw@...ysocki.net>
CC:     <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-omap@...r.kernel.org>, <linux-pm@...r.kernel.org>,
        Tony Lindgren <tony@...mide.com>,
        Dave Gerlach <d-gerlach@...com>
Subject: [PATCH] cpufreq: dt-platdev: Add devices covered by ti-cpufreq to blacklist

Commit edeec420de24 ("cpufreq: dt-platdev: Automatically create cpufreq
device with OPP v2") causes a cpufreq-dt platform device to be
automatically created for any platform with an OPP v2 node defined.
However, ti-cpufreq registers the cpufreq-dt platdev at the end of probe
in order to ensure the ti-cpufreq driver probes first and provides the
necessary opp-supported-hw for cpufreq-dt. With this new patch now a
dupluicate cpufreq-dt is created, which we do not want. To avoid this,
add the platforms handled by ti-cpufreq to the blacklist provided in the
aforementioned commit to allow ti-cpufreq to continue creating the
cpufreq-dt platdev.

This applies to am335x, am437x, dra7xx, and am57xx.

Fixes: edeec420de24 ("cpufreq: dt-cpufreq: platdev Automatically create device with OPP v2")
Signed-off-by: Dave Gerlach <d-gerlach@...com>
---
 drivers/cpufreq/cpufreq-dt-platdev.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-dt-platdev.c
index a020da7940d6..c6f554ba9bb3 100644
--- a/drivers/cpufreq/cpufreq-dt-platdev.c
+++ b/drivers/cpufreq/cpufreq-dt-platdev.c
@@ -106,6 +106,10 @@ static const struct of_device_id whitelist[] __initconst = {
  * platforms using "operating-points-v2" property.
  */
 static const struct of_device_id blacklist[] __initconst = {
+	{ .compatible = "ti,am33xx", },
+	{ .compatible = "ti,am43", },
+	{ .compatible = "ti,dra7", },
+
 	{ }
 };

-- 
2.13.4