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| author | Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> | 2012-08-15 19:07:30 +0200 |
|---|---|---|
| committer | Jason Cooper <jason@lakedaemon.net> | 2012-09-21 19:07:18 +0200 |
| commit | 5817d10b8b8a6003bfb7551d0c3feb92deb74ed2 (patch) | |
| tree | cd64a9a6f051a6a05b02fadfd5af32ea27bef703 /arch/arm | |
| parent | ARM: initial DTS support for km_kirkwood (diff) | |
| download | linux-5817d10b8b8a6003bfb7551d0c3feb92deb74ed2.tar.xz linux-5817d10b8b8a6003bfb7551d0c3feb92deb74ed2.zip | |
ARM: dove: unify clock setup
This patch synchronizes the clock setup of dove with other orion-based
platforms.
In dove_find_tclk there was a note about DOVE_SAMPLE_HI/LO register to
detect tclk. While it might be possible to set a different tclk frequency
with reset strapping the Dove datasheets don't tell anything about tclk
frequency here. Therefore, I removed that comment.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-dove/common.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/arch/arm/mach-dove/common.c b/arch/arm/mach-dove/common.c index 6321567d8eaa..8629e3043acd 100644 --- a/arch/arm/mach-dove/common.c +++ b/arch/arm/mach-dove/common.c @@ -33,8 +33,6 @@ #include <plat/addr-map.h> #include "common.h" -static int get_tclk(void); - /***************************************************************************** * I/O Address Mapping ****************************************************************************/ @@ -70,12 +68,13 @@ void __init dove_map_io(void) /***************************************************************************** * CLK tree ****************************************************************************/ +static int dove_tclk; static struct clk *tclk; -static void __init clk_init(void) +static void __init dove_clk_init(void) { tclk = clk_register_fixed_rate(NULL, "tclk", NULL, CLK_IS_ROOT, - get_tclk()); + dove_tclk); orion_clkdev_init(tclk); } @@ -188,16 +187,16 @@ void __init dove_init_early(void) orion_time_set_base(TIMER_VIRT_BASE); } -static int get_tclk(void) +static int __init dove_find_tclk(void) { - /* use DOVE_RESET_SAMPLE_HI/LO to detect tclk */ return 166666667; } static void __init dove_timer_init(void) { + dove_tclk = dove_find_tclk(); orion_time_init(BRIDGE_VIRT_BASE, BRIDGE_INT_TIMER1_CLR, - IRQ_DOVE_BRIDGE, get_tclk()); + IRQ_DOVE_BRIDGE, dove_tclk); } struct sys_timer dove_timer = { @@ -285,8 +284,8 @@ void __init dove_sdio1_init(void) void __init dove_init(void) { - printk(KERN_INFO "Dove 88AP510 SoC, "); - printk(KERN_INFO "TCLK = %dMHz\n", (get_tclk() + 499999) / 1000000); + pr_info("Dove 88AP510 SoC, TCLK = %d MHz.\n", + (dove_tclk + 499999) / 1000000); #ifdef CONFIG_CACHE_TAUROS2 tauros2_init(); @@ -294,7 +293,7 @@ void __init dove_init(void) dove_setup_cpu_mbus(); /* Setup root of clk tree */ - clk_init(); + dove_clk_init(); /* internal devices that every board has */ dove_rtc_init(); |