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authorPalmer Dabbelt <palmer@dabbelt.com>2018-08-04 11:23:19 +0300
committerPalmer Dabbelt <palmer@sifive.com>2018-08-13 18:31:31 +0300
commit62b0194368147def8c5a77ce604a125d620fc582 (patch)
treeffb0a3da4944a8aa15ce481a5e695acc03da3684 /arch/riscv/kernel/time.c
parent6ea0f26a7913b2a72f9cbe84e77ad2cbeaaa9dde (diff)
downloadlinux-62b0194368147def8c5a77ce604a125d620fc582.tar.xz
clocksource: new RISC-V SBI timer driver
The RISC-V ISA defines a per-hart real-time clock and timer, which is present on all systems. The clock is accessed via the 'rdtime' pseudo-instruction (which reads a CSR), and the timer is set via an SBI call. Contains various improvements from Atish Patra <atish.patra@wdc.com>. Signed-off-by: Dmitriy Cherkasov <dmitriy@oss-tech.org> Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com> [hch: remove dead code, add SPDX tags, used riscv_of_processor_hart(), minor cleanups, merged hotplug cpu support and other improvements from Atish] Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Atish Patra <atish.patra@wdc.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Diffstat (limited to 'arch/riscv/kernel/time.c')
-rw-r--r--arch/riscv/kernel/time.c9
1 files changed, 1 insertions, 8 deletions
diff --git a/arch/riscv/kernel/time.c b/arch/riscv/kernel/time.c
index 0df9b2cbd645..1911c8f6b8a6 100644
--- a/arch/riscv/kernel/time.c
+++ b/arch/riscv/kernel/time.c
@@ -18,12 +18,6 @@
unsigned long riscv_timebase;
-void __init init_clockevent(void)
-{
- timer_probe();
- csr_set(sie, SIE_STIE);
-}
-
void __init time_init(void)
{
struct device_node *cpu;
@@ -35,6 +29,5 @@ void __init time_init(void)
riscv_timebase = prop;
lpj_fine = riscv_timebase / HZ;
-
- init_clockevent();
+ timer_probe();
}