diff options
| author | Magnus Damm <damm@opensource.se> | 2009-10-30 05:24:48 +0100 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-10-30 06:38:49 +0100 |
| commit | 58ee987e2fd8acff6263d194d8fa43267cc8b1c9 (patch) | |
| tree | bf531b135a7a8b34cac4367728e8d75c927285b5 /arch/sh/boards/mach-kfr2r09 | |
| parent | sh: Add R-standby sleep mode support (diff) | |
| download | linux-58ee987e2fd8acff6263d194d8fa43267cc8b1c9.tar.xz linux-58ee987e2fd8acff6263d194d8fa43267cc8b1c9.zip | |
sh: Add KFR2R09 specific memory pre/post R-standby code
Add R-standby support to the KFR2R09 sdram code.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/boards/mach-kfr2r09')
| -rw-r--r-- | arch/sh/boards/mach-kfr2r09/sdram.S | 28 | ||||
| -rw-r--r-- | arch/sh/boards/mach-kfr2r09/setup.c | 3 |
2 files changed, 30 insertions, 1 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) diff --git a/arch/sh/boards/mach-kfr2r09/setup.c b/arch/sh/boards/mach-kfr2r09/setup.c index 5dae632092f2..fe80ad0a41f6 100644 --- a/arch/sh/boards/mach-kfr2r09/setup.c +++ b/arch/sh/boards/mach-kfr2r09/setup.c @@ -453,7 +453,8 @@ extern char kfr2r09_sdram_leave_end; static int __init kfr2r09_devices_setup(void) { /* register board specific self-refresh code */ - sh_mobile_register_self_refresh(SUSP_SH_STANDBY | SUSP_SH_SF, + sh_mobile_register_self_refresh(SUSP_SH_STANDBY | SUSP_SH_SF | + SUSP_SH_RSTANDBY, &kfr2r09_sdram_enter_start, &kfr2r09_sdram_enter_end, &kfr2r09_sdram_leave_start, |