diff options
Diffstat (limited to 'arch/sh/boards/mach-kfr2r09/sdram.S')
| -rw-r--r-- | arch/sh/boards/mach-kfr2r09/sdram.S | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/sh/boards/mach-kfr2r09/sdram.S b/arch/sh/boards/mach-kfr2r09/sdram.S index 4ce78fcf5674..0c9f55bec2fe 100644 --- a/arch/sh/boards/mach-kfr2r09/sdram.S +++ b/arch/sh/boards/mach-kfr2r09/sdram.S @@ -39,6 +39,10 @@ ENTRY(kfr2r09_sdram_leave_start) /* DBSC: put memory in auto-refresh mode */ + mov.l @(SH_SLEEP_MODE, r5), r0 + tst #SUSP_SH_RSTANDBY, r0 + bf resume_rstandby + ED 0xFD000040, 0x00000000 /* DBRFPDN0 */ WAIT 1 ED 0xFD000014, 0x00000002 /* DBCMDCNT (PALL) */ @@ -49,4 +53,28 @@ ENTRY(kfr2r09_sdram_leave_start) rts nop +resume_rstandby: + + /* DBSC: re-initialize and put in auto-refresh */ + + ED 0xFD000108, 0x40000301 /* DBPDCNT0 */ + ED 0xFD000020, 0x011B0002 /* DBCONF */ + ED 0xFD000030, 0x03060E02 /* DBTR0 */ + ED 0xFD000034, 0x01020102 /* DBTR1 */ + ED 0xFD000038, 0x01090406 /* DBTR2 */ + ED 0xFD000008, 0x00000004 /* DBKIND */ + ED 0xFD000040, 0x00000001 /* DBRFPDN0 */ + ED 0xFD000040, 0x00000000 /* DBRFPDN0 */ + ED 0xFD000018, 0x00000001 /* DBCKECNT */ + WAIT 1 + ED 0xFD000010, 0x00000001 /* DBEN */ + ED 0xFD000044, 0x000004AF /* DBRFPDN1 */ + ED 0xFD000048, 0x20CF0037 /* DBRFPDN2 */ + ED 0xFD000014, 0x00000004 /* DBCMDCNT (REF) */ + ED 0xFD000108, 0x40000300 /* DBPDCNT0 */ + ED 0xFD000040, 0x00010000 /* DBRFPDN0 */ + + rts + nop + ENTRY(kfr2r09_sdram_leave_end) |