From 3c5f7bb6bb8c5f1545757f52c595b1185cc8580c Mon Sep 17 00:00:00 2001
From: Magnus Damm <damm@opensource.se>
Date: Thu, 25 Feb 2010 11:06:02 +0000
Subject: [PATCH] --- yaml --- r: 181235 b: refs/heads/master c:
 b67cf2848af1cf4a4c9c277429092ae59adf859b h: refs/heads/master i:   181233:
 410a370afc5a56806652134c5e3217de6819d229   181231:
 6e3fd45d7e6fc074e0b9671043f0d0287e10629c v: v3

---
 [refs]                                    |  2 +-
 trunk/arch/sh/boards/mach-se/7724/sdram.S | 79 +++++++++++++++++++++++
 trunk/arch/sh/boards/mach-se/7724/setup.c |  3 +-
 3 files changed, 82 insertions(+), 2 deletions(-)

diff --git a/[refs] b/[refs]
index 3278915079d3..d33daa3dd546 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 41bfb7d7a6ce3d8dd83112e65f5d97feefde818a
+refs/heads/master: b67cf2848af1cf4a4c9c277429092ae59adf859b
diff --git a/trunk/arch/sh/boards/mach-se/7724/sdram.S b/trunk/arch/sh/boards/mach-se/7724/sdram.S
index 9040167d5022..6fa4734d09c7 100644
--- a/trunk/arch/sh/boards/mach-se/7724/sdram.S
+++ b/trunk/arch/sh/boards/mach-se/7724/sdram.S
@@ -39,6 +39,10 @@ ENTRY(ms7724se_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 +53,79 @@ ENTRY(ms7724se_sdram_leave_start)
 	rts
 	 nop
 
+resume_rstandby:
+
+	/* CPG: setup clocks before restarting external memory */
+
+	ED 0xA4150024, 0x00004000 /* PLLCR */
+
+	mov.l	FRQCRA,r0
+	mov.l	@r0,r3
+	mov.l	KICK,r1
+	or	r1, r3
+	mov.l	r3, @r0
+
+	mov.l	LSTATS,r0
+	mov	#1,r1
+WAIT_LSTATS:
+	mov.l	@r0,r3
+	tst	r1,r3
+	bf	WAIT_LSTATS
+
+	/* 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
+FRQCRA:	.long	0xa4150000
+KICK:	.long	0x80000000
+LSTATS:	.long	0xa4150060
+
 ENTRY(ms7724se_sdram_leave_end)
diff --git a/trunk/arch/sh/boards/mach-se/7724/setup.c b/trunk/arch/sh/boards/mach-se/7724/setup.c
index ee5251f92811..563f3dcb1f9b 100644
--- a/trunk/arch/sh/boards/mach-se/7724/setup.c
+++ b/trunk/arch/sh/boards/mach-se/7724/setup.c
@@ -610,7 +610,8 @@ static int __init devices_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,
 					&ms7724se_sdram_enter_start,
 					&ms7724se_sdram_enter_end,
 					&ms7724se_sdram_leave_start,