[U-Boot-Users] [RFC PATCH] icecube/lite5200b: fix OF_TBCLK (timebase-frequency) calculation
(sorry if you receive this twice, MTA issues)
I tracked jiffies (on Linux) incrementing twice as fast on lite5200b to this ("timebase-frequency" property).
G2 core reference manual says decrementer and time base are decreasing/increasing once every 4 bus clock cycles.
Was there a reason this was busfreq/8?
Domen --- include/configs/IceCube.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
Index: u-boot.git/include/configs/IceCube.h =================================================================== --- u-boot.git.orig/include/configs/IceCube.h +++ u-boot.git/include/configs/IceCube.h @@ -182,7 +182,7 @@
#define OF_CPU "PowerPC,5200@0" #define OF_SOC "soc5200@f0000000" -#define OF_TBCLK (bd->bi_busfreq / 8) +#define OF_TBCLK (bd->bi_busfreq / 4) #define OF_STDOUT_PATH "/soc5200@f0000000/serial@2000"
/*
On 3/7/07, Domen Puncer domen.puncer@telargo.com wrote:
I tracked jiffies (on Linux) incrementing twice as fast on lite5200b to this ("timebase-frequency" property).
G2 core reference manual says decrementer and time base are decreasing/increasing once every 4 bus clock cycles.
Was there a reason this was busfreq/8?
Simply sloppyness on my part.
Signed-off-by: Grant Likely grant.likely@secretlab.ca
Domen
include/configs/IceCube.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
Index: u-boot.git/include/configs/IceCube.h
--- u-boot.git.orig/include/configs/IceCube.h +++ u-boot.git/include/configs/IceCube.h @@ -182,7 +182,7 @@
#define OF_CPU "PowerPC,5200@0" #define OF_SOC "soc5200@f0000000" -#define OF_TBCLK (bd->bi_busfreq / 8) +#define OF_TBCLK (bd->bi_busfreq / 4) #define OF_STDOUT_PATH "/soc5200@f0000000/serial@2000"
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participants (2)
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Domen Puncer -
Grant Likely