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authorLinus Torvalds <torvalds@linux-foundation.org>2015-06-27 21:44:34 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2015-06-27 21:44:34 +0200
commit78c10e556ed904d5bfbd71e9cadd8ce8f25d6982 (patch)
treef73c802d60e81ff9e9fd2465eab096834d0227cd /arch/mips/jz4740/time.c
parentMerge branch 'for-4.2' of git://linux-nfs.org/~bfields/linux (diff)
parentMIPS: spinlock: Adjust arch_spin_lock back-off time (diff)
downloadlinux-78c10e556ed904d5bfbd71e9cadd8ce8f25d6982.tar.xz
linux-78c10e556ed904d5bfbd71e9cadd8ce8f25d6982.zip
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle: - Improvements to the tlb_dump code - KVM fixes - Add support for appended DTB - Minor improvements to the R12000 support - Minor improvements to the R12000 support - Various platform improvments for BCM47xx - The usual pile of minor cleanups - A number of BPF fixes and improvments - Some improvments to the support for R3000 and DECstations - Some improvments to the ATH79 platform support - A major patchset for the JZ4740 SOC adding support for the CI20 platform - Add support for the Pistachio SOC - Minor BMIPS/BCM63xx platform support improvments. - Avoid "SYNC 0" as memory barrier when unlocking spinlocks - Add support for the XWR-1750 board. - Paul's __cpuinit/__cpuinitdata cleanups. - New Malta CPU board support large memory so enable ZONE_DMA32. * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (131 commits) MIPS: spinlock: Adjust arch_spin_lock back-off time MIPS: asmmacro: Ensure 64-bit FP registers are used with MSA MIPS: BCM47xx: Simplify handling SPROM revisions MIPS: Cobalt Don't use module_init in non-modular MTD registration. MIPS: BCM47xx: Move NVRAM driver to the drivers/firmware/ MIPS: use for_each_sg() MIPS: BCM47xx: Don't select BCMA_HOST_PCI MIPS: BCM47xx: Add helper variable for storing NVRAM length MIPS: IRQ/IP27: Move IRQ allocation API to platform code. MIPS: Replace smp_mb with release barrier function in unlocks. MIPS: i8259: DT support MIPS: Malta: Basic DT plumbing MIPS: include errno.h for ENODEV in mips-cm.h MIPS: Define GCR_GIC_STATUS register fields MIPS: BPF: Introduce BPF ASM helpers MIPS: BPF: Use BPF register names to describe the ABI MIPS: BPF: Move register definition to the BPF header MIPS: net: BPF: Replace RSIZE with SZREG MIPS: BPF: Free up some callee-saved registers MIPS: Xtalk: Update xwidget.h with known Xtalk device numbers ...
Diffstat (limited to 'arch/mips/jz4740/time.c')
-rw-r--r--arch/mips/jz4740/time.c19
1 files changed, 17 insertions, 2 deletions
diff --git a/arch/mips/jz4740/time.c b/arch/mips/jz4740/time.c
index 72b0cecbc17c..7ab47fee1be8 100644
--- a/arch/mips/jz4740/time.c
+++ b/arch/mips/jz4740/time.c
@@ -13,6 +13,8 @@
*
*/
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/time.h>
@@ -20,6 +22,7 @@
#include <linux/clockchips.h>
#include <linux/sched_clock.h>
+#include <asm/mach-jz4740/clock.h>
#include <asm/mach-jz4740/irq.h>
#include <asm/mach-jz4740/timer.h>
#include <asm/time.h>
@@ -99,7 +102,12 @@ static struct clock_event_device jz4740_clockevent = {
.set_next_event = jz4740_clockevent_set_next,
.set_mode = jz4740_clockevent_set_mode,
.rating = 200,
+#ifdef CONFIG_MACH_JZ4740
.irq = JZ4740_IRQ_TCU0,
+#endif
+#ifdef CONFIG_MACH_JZ4780
+ .irq = JZ4780_IRQ_TCU2,
+#endif
};
static struct irqaction timer_irqaction = {
@@ -114,10 +122,17 @@ void __init plat_time_init(void)
int ret;
uint32_t clk_rate;
uint16_t ctrl;
+ struct clk *ext_clk;
+ of_clk_init(NULL);
jz4740_timer_init();
- clk_rate = jz4740_clock_bdata.ext_rate >> 4;
+ ext_clk = clk_get(NULL, "ext");
+ if (IS_ERR(ext_clk))
+ panic("unable to get ext clock");
+ clk_rate = clk_get_rate(ext_clk) >> 4;
+ clk_put(ext_clk);
+
jz4740_jiffies_per_tick = DIV_ROUND_CLOSEST(clk_rate, HZ);
clockevent_set_clock(&jz4740_clockevent, clk_rate);
@@ -134,7 +149,7 @@ void __init plat_time_init(void)
sched_clock_register(jz4740_read_sched_clock, 16, clk_rate);
- setup_irq(JZ4740_IRQ_TCU0, &timer_irqaction);
+ setup_irq(jz4740_clockevent.irq, &timer_irqaction);
ctrl = JZ_TIMER_CTRL_PRESCALE_16 | JZ_TIMER_CTRL_SRC_EXT;