From: Kalle Jokiniemi <kalle.jokiniemi@xxxxxxxxx>
sdrc_ps_to_ticks introduced some unnecessary
rounding error to SDRC_RFR value calculation.
Fixed by adding 10^3 more accuracy before
division and skipping the sdrc_ps_to_ticks call.
Problem-reported-by: Jukka S. Laitinen <jukka.s.laitinen@xxxxxxxxx>
Signed-off-by: Kalle Jokiniemi <kalle.jokiniemi@xxxxxxxxx>
---
arch/arm/mach-omap2/board-rx51-sdram.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/arm/mach-omap2/board-rx51-sdram.c b/arch/arm/mach-omap2/board-rx51-sdram.c
index 237b898..f3b9917 100644
--- a/arch/arm/mach-omap2/board-rx51-sdram.c
+++ b/arch/arm/mach-omap2/board-rx51-sdram.c
@@ -166,7 +166,7 @@ static int set_sdrc_timing_regval_ps(u32 *regval, int st_bit, int end_bit,
static int sdrc_timings(int id, long rate)
{
- u32 ticks_per_us;
+ u32 ticks_per_ms;
u32 rfr, l;
u32 actim_ctrla = 0, actim_ctrlb = 0;
u32 rfr_ctrl;
@@ -192,8 +192,8 @@ static int sdrc_timings(int id, long rate)
SDRC_SET_ONE(&actim_ctrlb, 12, 14, tCKE, l3_rate);
SDRC_SET_ONE(&actim_ctrlb, 16, 17, tWTR, l3_rate);
- ticks_per_us = sdrc_ps_to_ticks(1000000, l3_rate);
- rfr = rx51_timings[0].tREF * ticks_per_us / 1000;
+ ticks_per_ms = l3_rate;
+ rfr = rx51_timings[0].tREF * ticks_per_ms / 1000000;
if (rfr > 65535 + 50)
rfr = 65535;
else
--
1.5.4.3
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