clocksource: convert time-armada-370-xp to clk framework

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Tested-by Gregory CLEMENT <gregory.clement@free-electrons.com>

4 files changed, 8 insertions, 9 deletions

diff --git a/Documentation/devicetree/bindings/arm/armada-370-xp-timer.txt b/Documentation/devicetree/bindings/arm/armada-370-xp-timer.txt
index 8b6ea2267c94..64830118b013 100644
--- a/Documentation/devicetree/bindings/arm/armada-370-xp-timer.txt
+++ b/Documentation/devicetree/bindings/arm/armada-370-xp-timer.txt
@@ -5,6 +5,7 @@ Required properties:
 - compatible: Should be "marvell,armada-370-xp-timer"
 - interrupts: Should contain the list of Global Timer interrupts
 - reg: Should contain the base address of the Global Timer registers
+- clocks: clock driving the timer hardware
 
 Optional properties:
 - marvell,timer-25Mhz: Tells whether the Global timer supports the 25
diff --git a/arch/arm/boot/dts/armada-370-db.dts b/arch/arm/boot/dts/armada-370-db.dts
index fffd5c2a3041..4a31b0396623 100644
--- a/arch/arm/boot/dts/armada-370-db.dts
+++ b/arch/arm/boot/dts/armada-370-db.dts
@@ -34,9 +34,5 @@
                         clock-frequency = <200000000>;
                         status = "okay";
                 };
-                timer@d0020300 {
-                        clock-frequency = <600000000>;
-                        status = "okay";
-                };
         };
 };
diff --git a/arch/arm/boot/dts/armada-370-xp.dtsi b/arch/arm/boot/dts/armada-370-xp.dtsi
index 16cc82cdaa81..94b4b9e03571 100644
--- a/arch/arm/boot/dts/armada-370-xp.dtsi
+++ b/arch/arm/boot/dts/armada-370-xp.dtsi
@@ -62,6 +62,7 @@
                                compatible = "marvell,armada-370-xp-timer";
                                reg = <0xd0020300 0x30>;
                                interrupts = <37>, <38>, <39>, <40>;
+                               clocks = <&coreclk 2>;
                 };
 
                 addr-decoding@d0020000 {
diff --git a/drivers/clocksource/time-armada-370-xp.c b/drivers/clocksource/time-armada-370-xp.c
index 4674f94957cd..a4605fd7e303 100644
--- a/drivers/clocksource/time-armada-370-xp.c
+++ b/drivers/clocksource/time-armada-370-xp.c
@@ -18,6 +18,7 @@
 #include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/kernel.h>
+#include <linux/clk.h>
 #include <linux/timer.h>
 #include <linux/clockchips.h>
 #include <linux/interrupt.h>
@@ -167,7 +168,6 @@ void __init armada_370_xp_timer_init(void)
         u32 u;
         struct device_node *np;
         unsigned int timer_clk;
-        int ret;
         np = of_find_compatible_node(NULL, NULL, "marvell,armada-370-xp-timer");
         timer_base = of_iomap(np, 0);
         WARN_ON(!timer_base);
@@ -179,13 +179,14 @@ void __init armada_370_xp_timer_init(void)
                        timer_base + TIMER_CTRL_OFF);
                 timer_clk = 25000000;
         } else {
-                u32 clk = 0;
-                ret = of_property_read_u32(np, "clock-frequency", &clk);
-                WARN_ON(!clk || ret < 0);
+                unsigned long rate = 0;
+                struct clk *clk = of_clk_get(np, 0);
+                WARN_ON(IS_ERR(clk));
+                rate =  clk_get_rate(clk);
                 u = readl(timer_base + TIMER_CTRL_OFF);
                 writel(u & ~(TIMER0_25MHZ | TIMER1_25MHZ),
                        timer_base + TIMER_CTRL_OFF);
-                timer_clk = clk / TIMER_DIVIDER;
+                timer_clk = rate / TIMER_DIVIDER;
         }
 
         /* We use timer 0 as clocksource, and timer 1 for