diff options
| -rw-r--r-- | arch/arm/mach-mx6/mx6_suspend.S | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/arch/arm/mach-mx6/mx6_suspend.S b/arch/arm/mach-mx6/mx6_suspend.S index 59b676038427..a9b7e30cd85a 100644 --- a/arch/arm/mach-mx6/mx6_suspend.S +++ b/arch/arm/mach-mx6/mx6_suspend.S @@ -85,8 +85,7 @@ r2: suspend_iram_base ldr r4, [r1, #0x330] /* DRAM_SDCKE0 */ ldr r5, [r1, #0x334] /* DRAM_SDCKE1 */ ldr r6, [r1, #0x320] /* DRAM_RESET */ - ldr r7, [r1, #0x5c8] /* GPR_CTLDS */ - stmfd r0!, {r4-r7} + stmfd r0!, {r4-r6} .endm @@ -122,11 +121,10 @@ r2: suspend_iram_base str r6, [r1, #0x33c] /* DRAM_SODT0*/ str r7, [r1, #0x340] /* DRAM_SODT1*/ - ldmea r0!, {r4-r7} + ldmea r0!, {r4-r6} str r4, [r1, #0x330] /* DRAM_SDCKE0 */ str r5, [r1, #0x334] /* DRAM_SDCKE1 */ str r6, [r1, #0x320] /* DRAM_RESET */ - str r7, [r1, #0x5c8] /* GPR_CTLDS */ .endm @@ -138,6 +136,13 @@ r2: suspend_iram_base str r0, [r1, #0x314] /* DRAM_DQM2 */ str r0, [r1, #0x318] /* DRAM_DQM3 */ + /* Make sure the Pull Ups are enabled. + * So only reduce the drive stength, but + * leave the pull-ups in the original state. + * This is required for LPDDR2. + */ + ldr r0, [r1, #0x344] + orr r0, r0, #0x3000 str r0, [r1, #0x344] /* DRAM_SDQS0 */ str r0, [r1, #0x348] /* DRAM_SDQS1 */ str r0, [r1, #0x34c] /* DRAM_SDQS2 */ @@ -158,7 +163,6 @@ r2: suspend_iram_base str r0, [r1, #0x33c] /* DRAM_SODT0*/ str r0, [r1, #0x340] /* DRAM_SODT1*/ - str r0, [r1, #0x5c8] /* GPR_CTLDS */ mov r0, #0x80000 str r0, [r1, #0x320] /* DRAM_RESET */ mov r0, #0x1000 |