diff options
| author | Anson Huang <b20788@freescale.com> | 2012-06-06 17:47:12 +0800 |
|---|---|---|
| committer | Justin Waters <justin.waters@timesys.com> | 2012-09-12 11:05:51 -0400 |
| commit | 0803f29aec4fcfa8de918da2c7b0ec566214a5f9 (patch) | |
| tree | dd8c8b1423f4418f2113fc2c39e609973d29d960 /board/freescale/mx6q_arm2 | |
| parent | 34a6bfd9e7763733b479b00ece7925d2b7fe81fc (diff) | |
ENGR00212571 [MX6]Change DRAM ODT setting to save power
We can use weak ODT setting, it will save about 50% DDR
power in runtime. Now we use 0x00007
MMDC0_MPODTCTRL MMDC1_MPODTCTRL, (Ohm)
Setting DDR_ODT imx_ODT Max_overclocking
0x22227 120 060 615MHz
0x11117 120 120 604MHz
0x00007 120 000 576MHz
0x00000 000 000 556MHz
Signed-off-by: Anson Huang <b20788@freescale.com>
Diffstat (limited to 'board/freescale/mx6q_arm2')
| -rw-r--r-- | board/freescale/mx6q_arm2/flash_header.S | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/board/freescale/mx6q_arm2/flash_header.S b/board/freescale/mx6q_arm2/flash_header.S index 02d07379ab..1eec5c4969 100644 --- a/board/freescale/mx6q_arm2/flash_header.S +++ b/board/freescale/mx6q_arm2/flash_header.S @@ -188,8 +188,8 @@ MXC_DCD_ITEM(84, MMDC_P0_BASE_ADDR + 0x01c, 0x04008040) MXC_DCD_ITEM(85, MMDC_P0_BASE_ADDR + 0x01c, 0x04008048) # final DDR setup MXC_DCD_ITEM(86, MMDC_P0_BASE_ADDR + 0x020, 0x00005800) -MXC_DCD_ITEM(87, MMDC_P0_BASE_ADDR + 0x818, 0x00022227) -MXC_DCD_ITEM(88, MMDC_P1_BASE_ADDR + 0x818, 0x00022227) +MXC_DCD_ITEM(87, MMDC_P0_BASE_ADDR + 0x818, 0x00000007) +MXC_DCD_ITEM(88, MMDC_P1_BASE_ADDR + 0x818, 0x00000007) MXC_DCD_ITEM(89, MMDC_P0_BASE_ADDR + 0x004, 0x0002556d) MXC_DCD_ITEM(90, MMDC_P1_BASE_ADDR + 0x004, 0x00011006) MXC_DCD_ITEM(91, MMDC_P0_BASE_ADDR + 0x01c, 0x00000000) @@ -912,8 +912,8 @@ MXC_DCD_ITEM(69, MMDC_P0_BASE_ADDR + 0x01c, 0x04008048) MXC_DCD_ITEM(70, MMDC_P0_BASE_ADDR + 0x800, 0xA1380003) MXC_DCD_ITEM(71, MMDC_P1_BASE_ADDR + 0x800, 0xA1380003) MXC_DCD_ITEM(72, MMDC_P0_BASE_ADDR + 0x020, 0x00005800) -MXC_DCD_ITEM(73, MMDC_P0_BASE_ADDR + 0x818, 0x00022227) -MXC_DCD_ITEM(74, MMDC_P1_BASE_ADDR + 0x818, 0x00022227) +MXC_DCD_ITEM(73, MMDC_P0_BASE_ADDR + 0x818, 0x00000007) +MXC_DCD_ITEM(74, MMDC_P1_BASE_ADDR + 0x818, 0x00000007) MXC_DCD_ITEM(75, MMDC_P0_BASE_ADDR + 0x83c, 0x434B0350) MXC_DCD_ITEM(76, MMDC_P0_BASE_ADDR + 0x840, 0x034C0359) @@ -1144,9 +1144,9 @@ plugin_start: ldr r1, =0x00005800 str r1, [r0,#0x20] - ldr r1, =0x00022227 + ldr r1, =0x00000007 str r1, [r0,#0x818] - ldr r1, =0x00022227 + ldr r1, =0x00000007 str r1, [r2,#0x818] ldr r1, =0x433f033f |