Current way of calculation CS0_END field for MMDCx_MDASP register
is problematic because in most cases the user is forced to define
cs_density in an unnatural way: as value - 2, instead of value.
This breaks the abstraction provided by struct mx6_ddr_sysinfo
because the user is forced to be aware of the way the calculation
is performed.
Refactor the calculation.
Cc: Stefano Babic <sba...@denx.de>
Cc: Tim Harvey <thar...@gateworks.com>
Signed-off-by: Nikita Kiryanov <nik...@compulab.co.il>
---
Changes in V4:
- No changes
Changes in V3:
- No changes
Changes in V2:
- No changes
arch/arm/cpu/armv7/mx6/ddr.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/arch/arm/cpu/armv7/mx6/ddr.c b/arch/arm/cpu/armv7/mx6/ddr.c
index c0fb749..d3891dc 100644
--- a/arch/arm/cpu/armv7/mx6/ddr.c
+++ b/arch/arm/cpu/armv7/mx6/ddr.c
@@ -308,9 +308,7 @@ void mx6_dram_cfg(const struct mx6_ddr_sysinfo *sysinfo,
twtr = ROUND(MAX(4 * clkper, 7500) / clkper, 1) - 1;
trcd = trp;
trtp = twtr;
- cs0_end = (4 * sysinfo->cs_density <= 120) ?
- 4 * sysinfo->cs_density + 7 :
- 127;
+ cs0_end = 4 * sysinfo->cs_density - 1;
debug("density:%d Gb (%d Gb per chip)\n",
sysinfo->cs_density, ddr3_cfg->density);
--
1.9.1
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