[ARM] mmp: add support for Marvell MMP2

Marvell MMP2 (aka ARMADA610) is a SoC based on PJ4 core. It's
ARMv6 compatible.  Support basic interrupt handler and timer,
and basic support for MMP2 based FLINT platform.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

1 files changed, 25 insertions, 1 deletions

diff --git a/arch/arm/mach-mmp/time.c b/arch/arm/mach-mmp/time.c
index a8400bb891e7..cf75694e9687 100644
--- a/arch/arm/mach-mmp/time.c
+++ b/arch/arm/mach-mmp/time.c
@@ -30,7 +30,10 @@
 
 #include <mach/addr-map.h>
 #include <mach/regs-timers.h>
+#include <mach/regs-apbc.h>
 #include <mach/irqs.h>
+#include <mach/cputype.h>
+#include <asm/mach/time.h>
 
 #include "clock.h"
 
@@ -158,7 +161,7 @@ static void __init timer_config(void)
 
         __raw_writel(cer & ~0x1, TIMERS_VIRT_BASE + TMR_CER); /* disable */
 
-        ccr &= TMR_CCR_CS_0(0x3);
+        ccr &= (cpu_is_mmp2()) ? TMR_CCR_CS_0(0) : TMR_CCR_CS_0(3);
         __raw_writel(ccr, TIMERS_VIRT_BASE + TMR_CCR);
 
         /* free-running mode */
@@ -197,3 +200,24 @@ void __init timer_init(int irq)
         clocksource_register(&cksrc);
         clockevents_register_device(&ckevt);
 }
+
+static void __init mmp2_timer_init(void)
+{
+        unsigned long clk_rst;
+
+        __raw_writel(APBC_APBCLK | APBC_RST, APBC_MMP2_TIMERS);
+
+        /*
+         * enable bus/functional clock, enable 6.5MHz (divider 4),
+         * release reset
+         */
+        clk_rst = APBC_APBCLK | APBC_FNCLK | APBC_FNCLKSEL(1);
+        __raw_writel(clk_rst, APBC_MMP2_TIMERS);
+
+        timer_init(IRQ_MMP2_TIMER1);
+}
+
+struct sys_timer mmp2_timer = {
+        .init   = mmp2_timer_init,
+};
+