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powerpc/82xx: use SDRAM detection for mgcoge2ne

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mgcoge2ne was an intermediate step towards mgcoge3ne. One difference is the
smaller SDRAM on mgcoge2ne (128MB). To support both boards with the same
u-boot we use here the SDRAM detection.

This patch enables SDRAM detection between 256MB and 128MB.
So in addition to the existing 256MB geometry:
     4 chips x 8M (13 rows, 10 cols) x 16 bit x 4 banks
we can now also have 128MB geometry:
     4 chips x 4M (13 rows,  9 cols) x 16 bit x 4 banks

Signed-off-by: Gerlando Falauto <gerlando.falauto@keymile.com>
This commit is contained in:
Gerlando Falauto 2012-07-27 05:16:39 +00:00 committed by Wolfgang Denk
parent 3a532346fc
commit c9718210b1
1 changed files with 13 additions and 4 deletions
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17
include/configs/km82xx.h
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@ -119,7 +119,8 @@
/*
* Bank 1 - 60x bus SDRAM
* mgcoge3ne has 256M.
* mgcoge3ne has 256MB
* mgcoge2ne has 128MB
*/
#define SDRAM_MAX_SIZE 0x10000000 /* max. 256 MB */
#define CONFIG_SYS_GLOBAL_SDRAM_LIMIT (512 << 20) /* less than 512 MB */
@ -127,20 +128,28 @@
#define CONFIG_SYS_OR1 ((~(CONFIG_SYS_GLOBAL_SDRAM_LIMIT-1) & \
ORxS_SDAM_MSK) |\
ORxS_BPD_4 |\
ORxS_ROWST_PBI1_A4 |\
ORxS_NUMR_13)
#define CONFIG_SYS_PSDMR ( \
PSDMR_PBI |\
PSDMR_SDAM_A17_IS_A5 |\
PSDMR_BSMA_A13_A15 |\
PSDMR_SDA10_PBI1_A6 |\
PSDMR_RFRC_5_CLK |\
PSDMR_PRETOACT_2W |\
PSDMR_ACTTORW_2W |\
PSDMR_LDOTOPRE_1C |\
PSDMR_WRC_2C |\
PSDMR_CL_2)
#define CONFIG_SYS_SDRAM_LIST { \
{ .size = 256 << 20, \
.or1 = ORxS_ROWST_PBI1_A4, \
.psdmr = PSDMR_SDAM_A17_IS_A5 | PSDMR_SDA10_PBI1_A6, \
}, \
{ .size = 128 << 20, \
.or1 = ORxS_ROWST_PBI1_A5, \
.psdmr = PSDMR_SDAM_A16_IS_A5 | PSDMR_SDA10_PBI1_A7, \
}, \
}
#endif /* defined(CONFIG_MGCOGE3NE) */
/* include further common stuff for all keymile 82xx boards */