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authorKumar Gala <galak@kernel.crashing.org>2011-02-18 05:40:54 -0600
committerKumar Gala <galak@kernel.crashing.org>2011-04-28 22:09:24 -0500
commit66412c6371cfd6e056679abedea7d6fafe6a0422 (patch)
tree261d51ec7e7c2a22f0bd5db5fca43d4fc9910aeb /arch/powerpc/cpu
parentd90fdba6ca0b08c77cced6e914609e3696dd5909 (diff)
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powerpc/85xx: Change timebase divisor to be defined per processor
Introduce new CONFIG_SYS_FSL_TBCLK_DIV on 85xx platforms because different SoCs have different divisor amounts. All the PQ3 parts are /8, the P4080/P4080 is /16, and P2040/P3041/P5020 are /32. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/cpu')
-rw-r--r--arch/powerpc/cpu/mpc85xx/cpu.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/cpu.c b/arch/powerpc/cpu/mpc85xx/cpu.c
index f5b39c0..f863f4a 100644
--- a/arch/powerpc/cpu/mpc85xx/cpu.c
+++ b/arch/powerpc/cpu/mpc85xx/cpu.c
@@ -234,13 +234,14 @@ int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
/*
* Get timebase clock frequency
*/
+#ifndef CONFIG_SYS_FSL_TBCLK_DIV
+#define CONFIG_SYS_FSL_TBCLK_DIV 8
+#endif
unsigned long get_tbclk (void)
{
-#ifdef CONFIG_FSL_CORENET
- return (gd->bus_clk + 8) / 16;
-#else
- return (gd->bus_clk + 4UL)/8UL;
-#endif
+ unsigned long tbclk_div = CONFIG_SYS_FSL_TBCLK_DIV;
+
+ return (gd->bus_clk + (tbclk_div >> 1)) / tbclk_div;
}