clocksource: ARM sp804: obtain sp804 timer rate via clks

This allows platforms to specify the rate of the SP804 clocksource via
the clk subsystem.  While ARM boards clock these at 1MHz, BCMRing also
has SP804 timers but are clocked at different rates.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 8 insertions, 1 deletions

diff --git a/arch/arm/mach-realview/core.c b/arch/arm/mach-realview/core.c
index 6356b5e2e111..6a9cd1eb4c2e 100644
--- a/arch/arm/mach-realview/core.c
+++ b/arch/arm/mach-realview/core.c
@@ -315,6 +315,10 @@ static struct clk ref24_clk = {
         .rate   = 24000000,
 };
 
+static struct clk sp804_clk = {
+        .rate   = 1000000,
+};
+
 static struct clk dummy_apb_pclk;
 
 static struct clk_lookup lookups[] = {
@@ -357,7 +361,10 @@ static struct clk_lookup lookups[] = {
         }, {    /* SSP */
                 .dev_id         = "dev:ssp0",
                 .clk            = &ref24_clk,
-        }
+        }, {    /* SP804 timers */
+                .dev_id         = "sp804",
+                .clk            = &sp804_clk,
+        },
 };
 
 void __init realview_init_early(void)