linux-kernel - [PATCH V4 6/6] ARM: OMAP3+: use cpu0-cpufreq driver in device tree supported boot

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Date:	Fri, 12 Apr 2013 17:54:38 -0500
From:	Nishanth Menon <nm@...com>
To:	<linux-omap@...r.kernel.org>
CC:	<devicetree-discuss@...ts.ozlabs.org>,
	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	Benoît Cousson <b-cousson@...com>,
	Tony Lindgren <tony@...mide.com>,
	Paul Walmsley <paul@...an.com>,
	Kevin Hilman <khilman@...prootsystems.com>,
	Mike Turquette <mturquette@...aro.org>,
	Nishanth Menon <nm@...com>
Subject: [PATCH V4 6/6] ARM: OMAP3+: use cpu0-cpufreq driver in device tree supported boot

With OMAP3+ and AM33xx supported SoC having defined CPU device tree
entries with operating-points and clock nodes defined, we can now use
the SoC generic cpufreq-cpu0 driver by registering appropriate device.

Cc: Benoit Cousson <b-cousson@...com>
Cc: Kevin Hilman <khilman@...prootsystems.com>
Cc: Paul Walmsley <paul@...an.com>
Cc: Tony Lindgren <tony@...mide.com>
Signed-off-by: Nishanth Menon <nm@...com>
---
Introduced as a result of alignment in http://marc.info/?t=136450773400004&r=1&w=2
previous versions do not use this approach.

This would probably be good to get merged *after* Rafael's tree is merged in.

[Probably belongs to Kevin/Tony's tree?]

 arch/arm/mach-omap2/pm.c |   11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c
index 8d15f9a..6cf95160 100644
--- a/arch/arm/mach-omap2/pm.c
+++ b/arch/arm/mach-omap2/pm.c
@@ -267,7 +267,12 @@ static void __init omap4_init_voltages(void)
 
 static inline void omap_init_cpufreq(void)
 {
-	struct platform_device_info devinfo = { .name = "omap-cpufreq", };
+	struct platform_device_info devinfo = { };
+
+	if (!of_have_populated_dt())
+		devinfo.name = "omap-cpufreq";
+	else
+		devinfo.name = "cpufreq-cpu0";
 	platform_device_register_full(&devinfo);
 }
 
@@ -301,9 +306,9 @@ int __init omap2_common_pm_late_init(void)
 		/* Smartreflex device init */
 		omap_devinit_smartreflex();
 
-		/* cpufreq dummy device instantiation */
-		omap_init_cpufreq();
 	}
+	/* cpufreq dummy device instantiation */
+	omap_init_cpufreq();
 
 #ifdef CONFIG_SUSPEND
 	suspend_set_ops(&omap_pm_ops);
-- 
1.7.9.5

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