linux-kernel - [RFC 02/17] ARM: call clk_of_init from time

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Message-Id: <1376964271-22715-3-git-send-email-sebastian.hesselbarth@gmail.com>
Date:	Tue, 20 Aug 2013 04:04:16 +0200
From:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
To:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Cc:	Russell King <linux@....linux.org.uk>,
	Arnd Bergmann <arnd@...db.de>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [RFC 02/17] ARM: call clk_of_init from time_init

Most DT ARM machs require common clock providers initialized before timers.
Currently, arch/arm machs use .init_time to call clk_of_init right before
clocksource_of_init. This prevents to remove that hook and use the default
hook instead. clk_of_init now checks for multiple calls to it, so add
the call to ARM arch time_init by default.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
---
Cc: Mike Turquette <mturquette@...aro.org> 
Cc: Russell King <linux@....linux.org.uk>
Cc: Arnd Bergmann <arnd@...db.de>
Cc: linux-arm-kernel@...ts.infradead.org 
Cc: linux-kernel@...r.kernel.org 
---
 arch/arm/kernel/time.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index 98aee32..94b51b8 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -22,6 +22,7 @@
 #include <linux/errno.h>
 #include <linux/profile.h>
 #include <linux/timer.h>
+#include <linux/clk-provider.h>
 #include <linux/clocksource.h>
 #include <linux/irq.h>
 #include <linux/sched_clock.h>
@@ -116,6 +117,9 @@ int __init register_persistent_clock(clock_access_fn read_boot,
 
 void __init time_init(void)
 {
+	/* initalize common clocks before timers */
+	of_clk_init(NULL);
+
 	if (machine_desc->init_time)
 		machine_desc->init_time();
 	else
-- 
1.7.10.4

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