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>
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@ -37,6 +37,10 @@ ENTRY(ecovec24_sdram_enter_end)
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.balign 4
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ENTRY(ecovec24_sdram_leave_start)
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mov.l @(SH_SLEEP_MODE, r5), r0
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tst #SUSP_SH_RSTANDBY, r0
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bf resume_rstandby
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/* DBSC: put memory in auto-refresh mode */
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ED 0xFD000040, 0x00000000 /* DBRFPDN0 */
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@ -49,4 +53,59 @@ ENTRY(ecovec24_sdram_leave_start)
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rts
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nop
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resume_rstandby:
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/* DBSC: re-initialize and put in auto-refresh */
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ED 0xFD000108, 0x00000181 /* DBPDCNT0 */
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ED 0xFD000020, 0x015B0002 /* DBCONF */
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ED 0xFD000030, 0x03071502 /* DBTR0 */
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ED 0xFD000034, 0x02020102 /* DBTR1 */
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ED 0xFD000038, 0x01090405 /* DBTR2 */
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ED 0xFD00003C, 0x00000002 /* DBTR3 */
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ED 0xFD000008, 0x00000005 /* DBKIND */
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ED 0xFD000040, 0x00000001 /* DBRFPDN0 */
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ED 0xFD000040, 0x00000000 /* DBRFPDN0 */
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ED 0xFD000018, 0x00000001 /* DBCKECNT */
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mov #100,r0
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WAIT_400NS:
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dt r0
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bf WAIT_400NS
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ED 0xFD000014, 0x00000002 /* DBCMDCNT (PALL) */
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ED 0xFD000060, 0x00020000 /* DBMRCNT (EMR2) */
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ED 0xFD000060, 0x00030000 /* DBMRCNT (EMR3) */
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ED 0xFD000060, 0x00010004 /* DBMRCNT (EMR) */
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ED 0xFD000060, 0x00000532 /* DBMRCNT (MRS) */
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ED 0xFD000014, 0x00000002 /* DBCMDCNT (PALL) */
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ED 0xFD000014, 0x00000004 /* DBCMDCNT (REF) */
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ED 0xFD000014, 0x00000004 /* DBCMDCNT (REF) */
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ED 0xFD000060, 0x00000432 /* DBMRCNT (MRS) */
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ED 0xFD000060, 0x000103c0 /* DBMRCNT (EMR) */
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ED 0xFD000060, 0x00010040 /* DBMRCNT (EMR) */
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mov #100,r0
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WAIT_400NS_2:
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dt r0
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bf WAIT_400NS_2
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ED 0xFD000010, 0x00000001 /* DBEN */
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ED 0xFD000044, 0x0000050f /* DBRFPDN1 */
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ED 0xFD000048, 0x236800e6 /* DBRFPDN2 */
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mov.l DUMMY,r0
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mov.l @r0, r1 /* force single dummy read */
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ED 0xFD000014, 0x00000002 /* DBCMDCNT (PALL) */
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ED 0xFD000014, 0x00000004 /* DBCMDCNT (REF) */
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ED 0xFD000108, 0x00000080 /* DBPDCNT0 */
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ED 0xFD000040, 0x00010000 /* DBRFPDN0 */
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rts
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nop
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.balign 4
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DUMMY: .long 0xac400000
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ENTRY(ecovec24_sdram_leave_end)
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@ -850,7 +850,8 @@ static int __init arch_setup(void)
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struct clk *clk;
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/* register board specific self-refresh code */
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sh_mobile_register_self_refresh(SUSP_SH_STANDBY | SUSP_SH_SF,
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sh_mobile_register_self_refresh(SUSP_SH_STANDBY | SUSP_SH_SF |
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SUSP_SH_RSTANDBY,
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&ecovec24_sdram_enter_start,
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&ecovec24_sdram_enter_end,
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&ecovec24_sdram_leave_start,
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