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DaVinci: fix ddr2 vtp i/o calibration

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Previously, only the low 5 bits (NCH) were being transfered
from DDRVTPR to DDRVTPIOCR, the bits 5-9 where zeroed.

VTP_RECAL should be bit 15, not 18.

The only mainline board affected by this change is davinci_sonata.
The other Davinci boards define CONFIG_SKIP_LOWLEVEL_INIT.

However, if the program that loads u-boot on these boards
copied the code from u-boot, they will need fixed as well.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>

Please get tested by acks before applying, where tested by
means an overnight memory test.

Thanks
Troy
This commit is contained in:
Troy Kisky 2012-05-18 13:21:59 +00:00 • committed by Albert ARIBAUD
parent e843d0f7ee
commit d5b069ecb4
1 changed files with 3 additions and 4 deletions
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7
arch/arm/cpu/arm926ejs/davinci/lowlevel_init.S
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@ -523,9 +523,8 @@ VTPLock:
ldr r6, DDRVTPR ldr r6, DDRVTPR
ldr r7, [r6] ldr r7, [r6]
and r7, r7, $0x1f mov r8, r7, LSL #32-10
and r8, r7, $0x3e0 mov r8, r8, LSR #32-10 /* grab low 10 bits */
orr r8, r7, r8
ldr r7, VTP_RECAL ldr r7, VTP_RECAL
orr r8, r7, r8 orr r8, r7, r8
ldr r7, VTP_EN ldr r7, VTP_EN
@ -644,7 +643,7 @@ VTP_LOCK_COUNT:
VTP_MASK: VTP_MASK:
.word 0xffffdfff .word 0xffffdfff
VTP_RECAL: VTP_RECAL:
.word 0x40000 .word 0x08000
VTP_EN: VTP_EN:
.word 0x02000 .word 0x02000
CFGTEST: CFGTEST: