redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

sh: ecovec r-standby support 

This patch adds board specific r-standby resume code
for ecovec.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
hifive-unleashed-5.1
Magnus Damm 2010-02-25 11:07:52 +00:00 committed by Paul Mundt
parent b67cf2848a
commit 2839bd61f6
2 changed files with 61 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

59
arch/sh/boards/mach-ecovec24/sdram.S
View File

@ -37,6 +37,10 @@ ENTRY(ecovec24_sdram_enter_end)
.balign 4
ENTRY(ecovec24_sdram_leave_start)
mov.l @(SH_SLEEP_MODE, r5), r0
tst #SUSP_SH_RSTANDBY, r0
bf resume_rstandby
/* DBSC: put memory in auto-refresh mode */
ED 0xFD000040, 0x00000000 /* DBRFPDN0 */
@ -49,4 +53,59 @@ ENTRY(ecovec24_sdram_leave_start)
rts
nop
resume_rstandby:
/* DBSC: re-initialize and put in auto-refresh */
ED 0xFD000108, 0x00000181 /* DBPDCNT0 */
ED 0xFD000020, 0x015B0002 /* DBCONF */
ED 0xFD000030, 0x03071502 /* DBTR0 */
ED 0xFD000034, 0x02020102 /* DBTR1 */
ED 0xFD000038, 0x01090405 /* DBTR2 */
ED 0xFD00003C, 0x00000002 /* DBTR3 */
ED 0xFD000008, 0x00000005 /* DBKIND */
ED 0xFD000040, 0x00000001 /* DBRFPDN0 */
ED 0xFD000040, 0x00000000 /* DBRFPDN0 */
ED 0xFD000018, 0x00000001 /* DBCKECNT */
mov #100,r0
WAIT_400NS:
dt r0
bf WAIT_400NS
ED 0xFD000014, 0x00000002 /* DBCMDCNT (PALL) */
ED 0xFD000060, 0x00020000 /* DBMRCNT (EMR2) */
ED 0xFD000060, 0x00030000 /* DBMRCNT (EMR3) */
ED 0xFD000060, 0x00010004 /* DBMRCNT (EMR) */
ED 0xFD000060, 0x00000532 /* DBMRCNT (MRS) */
ED 0xFD000014, 0x00000002 /* DBCMDCNT (PALL) */
ED 0xFD000014, 0x00000004 /* DBCMDCNT (REF) */
ED 0xFD000014, 0x00000004 /* DBCMDCNT (REF) */
ED 0xFD000060, 0x00000432 /* DBMRCNT (MRS) */
ED 0xFD000060, 0x000103c0 /* DBMRCNT (EMR) */
ED 0xFD000060, 0x00010040 /* DBMRCNT (EMR) */
mov #100,r0
WAIT_400NS_2:
dt r0
bf WAIT_400NS_2
ED 0xFD000010, 0x00000001 /* DBEN */
ED 0xFD000044, 0x0000050f /* DBRFPDN1 */
ED 0xFD000048, 0x236800e6 /* DBRFPDN2 */
mov.l DUMMY,r0
mov.l @r0, r1 /* force single dummy read */
ED 0xFD000014, 0x00000002 /* DBCMDCNT (PALL) */
ED 0xFD000014, 0x00000004 /* DBCMDCNT (REF) */
ED 0xFD000108, 0x00000080 /* DBPDCNT0 */
ED 0xFD000040, 0x00010000 /* DBRFPDN0 */
rts
nop
.balign 4
DUMMY: .long 0xac400000
ENTRY(ecovec24_sdram_leave_end)

3
arch/sh/boards/mach-ecovec24/setup.c
View File

@ -850,7 +850,8 @@ static int __init arch_setup(void)
struct clk *clk;
/* 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,
&ecovec24_sdram_enter_start,
&ecovec24_sdram_enter_end,
&ecovec24_sdram_leave_start,