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authorPawel Moll <pawel.moll@arm.com>2013-04-18 18:23:22 +0100
committerMike Turquette <mturquette@linaro.org>2013-04-18 11:41:10 -0700
commit6e973d2c438502dcf956e76305258ba7d1c7d1d3 (patch)
treee9b85815c35794b1b3a219e4ae755bfca2319f4a /arch/arm
parent476ba5ffa412cc170aa20fd135648b8f14a4baef (diff)
clk: vexpress: Add separate SP810 driver
Factor out the SP810 clocking code into a separate driver, selecting better (faster) parent at clk_prepare() time. This is to avoid problems with clocking infrastructure initialisation order, in particular to avoid dependency of fixed clock being initialized before SP810. It also makes vexpress platform OF-based clock initialisation code unnecessary. Signed-off-by: Pawel Moll <pawel.moll@arm.com> Tested-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Mike Turquette <mturquette@linaro.org> [mturquette@linaro.org: add .unprepare, FIXME comment, cleaned up code]
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/mach-vexpress/v2m.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/arm/mach-vexpress/v2m.c b/arch/arm/mach-vexpress/v2m.c
index 915683cb67d6..c5e20b52e3b7 100644
--- a/arch/arm/mach-vexpress/v2m.c
+++ b/arch/arm/mach-vexpress/v2m.c
@@ -21,6 +21,8 @@
#include <linux/regulator/fixed.h>
#include <linux/regulator/machine.h>
#include <linux/vexpress.h>
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
#include <asm/arch_timer.h>
#include <asm/mach-types.h>
@@ -433,7 +435,7 @@ static void __init v2m_dt_timer_init(void)
{
struct device_node *node = NULL;
- vexpress_clk_of_init();
+ of_clk_init(NULL);
do {
node = of_find_compatible_node(node, NULL, "arm,sp804");
@@ -441,6 +443,10 @@ static void __init v2m_dt_timer_init(void)
if (node) {
pr_info("Using SP804 '%s' as a clock & events source\n",
node->full_name);
+ WARN_ON(clk_register_clkdev(of_clk_get_by_name(node,
+ "timclken1"), "v2m-timer0", "sp804"));
+ WARN_ON(clk_register_clkdev(of_clk_get_by_name(node,
+ "timclken2"), "v2m-timer1", "sp804"));
v2m_sp804_init(of_iomap(node, 0),
irq_of_parse_and_map(node, 0));
}