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authorAlexey Brodkin <abrodkin@synopsys.com>2016-02-01 16:31:14 +0300
committerVineet Gupta <vgupta@synopsys.com>2016-05-09 09:32:30 +0530
commit0e6e9b648d802fe6641fe543b6dc4828baded159 (patch)
tree5a39f97895548188134795411d9579882bf221a3 /arch/arc/kernel
parentd21beffb0b9181c8823f71a5a7fabce6a0d4cf29 (diff)
downloadop-kernel-dev-0e6e9b648d802fe6641fe543b6dc4828baded159.zip
op-kernel-dev-0e6e9b648d802fe6641fe543b6dc4828baded159.tar.gz
ARC: use fixed frequencies in arc_set_early_base_baud()
UARTs usually have fixed clock so we're switching to use of constant values instead of something derived from core clock frequency. Among other things this will allow us to get rid of arc_{get|set}_core_freq() and switch to generic clock framework later on. Acked-by: Christian Ruppert <christian.ruppert@alitech.com> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc/kernel')
-rw-r--r--arch/arc/kernel/devtree.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/arc/kernel/devtree.c b/arch/arc/kernel/devtree.c
index 7e844fd..fecbc96 100644
--- a/arch/arc/kernel/devtree.c
+++ b/arch/arc/kernel/devtree.c
@@ -28,14 +28,12 @@ unsigned int __init arc_early_base_baud(void)
static void __init arc_set_early_base_baud(unsigned long dt_root)
{
- unsigned int core_clk = arc_get_core_freq();
-
if (of_flat_dt_is_compatible(dt_root, "abilis,arc-tb10x"))
- arc_base_baud = core_clk/3;
+ arc_base_baud = 166666666; /* Fixed 166.6MHz clk (TB10x) */
else if (of_flat_dt_is_compatible(dt_root, "snps,arc-sdp"))
arc_base_baud = 33333333; /* Fixed 33MHz clk (AXS10x) */
else
- arc_base_baud = core_clk;
+ arc_base_baud = 50000000; /* Fixed default 50MHz */
}
#else
#define arc_set_early_base_baud(dt_root)
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