From 0e6e9b648d802fe6641fe543b6dc4828baded159 Mon Sep 17 00:00:00 2001 From: Alexey Brodkin Date: Mon, 1 Feb 2016 16:31:14 +0300 Subject: 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 Signed-off-by: Alexey Brodkin Signed-off-by: Vineet Gupta --- arch/arc/kernel/devtree.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'arch/arc/kernel/devtree.c') diff --git a/arch/arc/kernel/devtree.c b/arch/arc/kernel/devtree.c index 7e844fd8213f..fecbc96df828 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) -- cgit v1.2.2 From 6e9318d1be83714e004a0ac795a936df4d2bed3e Mon Sep 17 00:00:00 2001 From: Alexey Brodkin Date: Mon, 1 Feb 2016 17:30:17 +0300 Subject: ARC: RIP arc_{get|set}_core_freq() clk API There are no more users of this - so RIP! Signed-off-by: Alexey Brodkin [vgupta: update changelog] Signed-off-by: Vineet Gupta --- arch/arc/kernel/devtree.c | 7 ------- 1 file changed, 7 deletions(-) (limited to 'arch/arc/kernel/devtree.c') diff --git a/arch/arc/kernel/devtree.c b/arch/arc/kernel/devtree.c index fecbc96df828..f1e07c2344f8 100644 --- a/arch/arc/kernel/devtree.c +++ b/arch/arc/kernel/devtree.c @@ -14,7 +14,6 @@ #include #include #include -#include #include #ifdef CONFIG_SERIAL_EARLYCON @@ -63,8 +62,6 @@ const struct machine_desc * __init setup_machine_fdt(void *dt) { const struct machine_desc *mdesc; unsigned long dt_root; - const void *clk; - int len; if (!early_init_dt_scan(dt)) return NULL; @@ -74,10 +71,6 @@ const struct machine_desc * __init setup_machine_fdt(void *dt) machine_halt(); dt_root = of_get_flat_dt_root(); - clk = of_get_flat_dt_prop(dt_root, "clock-frequency", &len); - if (clk) - arc_set_core_freq(of_read_ulong(clk, len/4)); - arc_set_early_base_baud(dt_root); return mdesc; -- cgit v1.2.2