162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 262306a36Sopenharmony_ci * 362306a36Sopenharmony_ci * KFR2R09 sdram self/auto-refresh setup code 462306a36Sopenharmony_ci * 562306a36Sopenharmony_ci * Copyright (C) 2009 Magnus Damm 662306a36Sopenharmony_ci */ 762306a36Sopenharmony_ci 862306a36Sopenharmony_ci#include <linux/sys.h> 962306a36Sopenharmony_ci#include <linux/errno.h> 1062306a36Sopenharmony_ci#include <linux/linkage.h> 1162306a36Sopenharmony_ci#include <asm/asm-offsets.h> 1262306a36Sopenharmony_ci#include <asm/suspend.h> 1362306a36Sopenharmony_ci#include <asm/romimage-macros.h> 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_ci/* code to enter and leave self-refresh. must be self-contained. 1662306a36Sopenharmony_ci * this code will be copied to on-chip memory and executed from there. 1762306a36Sopenharmony_ci */ 1862306a36Sopenharmony_ci .balign 4 1962306a36Sopenharmony_ciENTRY(kfr2r09_sdram_enter_start) 2062306a36Sopenharmony_ci 2162306a36Sopenharmony_ci /* DBSC: put memory in self-refresh mode */ 2262306a36Sopenharmony_ci 2362306a36Sopenharmony_ci ED 0xFD000010, 0x00000000 /* DBEN */ 2462306a36Sopenharmony_ci ED 0xFD000040, 0x00000000 /* DBRFPDN0 */ 2562306a36Sopenharmony_ci ED 0xFD000014, 0x00000002 /* DBCMDCNT (PALL) */ 2662306a36Sopenharmony_ci ED 0xFD000014, 0x00000004 /* DBCMDCNT (REF) */ 2762306a36Sopenharmony_ci ED 0xFD000040, 0x00000001 /* DBRFPDN0 */ 2862306a36Sopenharmony_ci 2962306a36Sopenharmony_ci rts 3062306a36Sopenharmony_ci nop 3162306a36Sopenharmony_ci 3262306a36Sopenharmony_ciENTRY(kfr2r09_sdram_enter_end) 3362306a36Sopenharmony_ci 3462306a36Sopenharmony_ci .balign 4 3562306a36Sopenharmony_ciENTRY(kfr2r09_sdram_leave_start) 3662306a36Sopenharmony_ci 3762306a36Sopenharmony_ci /* DBSC: put memory in auto-refresh mode */ 3862306a36Sopenharmony_ci 3962306a36Sopenharmony_ci mov.l @(SH_SLEEP_MODE, r5), r0 4062306a36Sopenharmony_ci tst #SUSP_SH_RSTANDBY, r0 4162306a36Sopenharmony_ci bf resume_rstandby 4262306a36Sopenharmony_ci 4362306a36Sopenharmony_ci ED 0xFD000040, 0x00000000 /* DBRFPDN0 */ 4462306a36Sopenharmony_ci WAIT 1 4562306a36Sopenharmony_ci ED 0xFD000014, 0x00000002 /* DBCMDCNT (PALL) */ 4662306a36Sopenharmony_ci ED 0xFD000014, 0x00000004 /* DBCMDCNT (REF) */ 4762306a36Sopenharmony_ci ED 0xFD000010, 0x00000001 /* DBEN */ 4862306a36Sopenharmony_ci ED 0xFD000040, 0x00010000 /* DBRFPDN0 */ 4962306a36Sopenharmony_ci 5062306a36Sopenharmony_ci rts 5162306a36Sopenharmony_ci nop 5262306a36Sopenharmony_ci 5362306a36Sopenharmony_ciresume_rstandby: 5462306a36Sopenharmony_ci 5562306a36Sopenharmony_ci /* DBSC: re-initialize and put in auto-refresh */ 5662306a36Sopenharmony_ci 5762306a36Sopenharmony_ci ED 0xFD000108, 0x40000301 /* DBPDCNT0 */ 5862306a36Sopenharmony_ci ED 0xFD000020, 0x011B0002 /* DBCONF */ 5962306a36Sopenharmony_ci ED 0xFD000030, 0x03060E02 /* DBTR0 */ 6062306a36Sopenharmony_ci ED 0xFD000034, 0x01020102 /* DBTR1 */ 6162306a36Sopenharmony_ci ED 0xFD000038, 0x01090406 /* DBTR2 */ 6262306a36Sopenharmony_ci ED 0xFD000008, 0x00000004 /* DBKIND */ 6362306a36Sopenharmony_ci ED 0xFD000040, 0x00000001 /* DBRFPDN0 */ 6462306a36Sopenharmony_ci ED 0xFD000040, 0x00000000 /* DBRFPDN0 */ 6562306a36Sopenharmony_ci ED 0xFD000018, 0x00000001 /* DBCKECNT */ 6662306a36Sopenharmony_ci WAIT 1 6762306a36Sopenharmony_ci ED 0xFD000010, 0x00000001 /* DBEN */ 6862306a36Sopenharmony_ci ED 0xFD000044, 0x000004AF /* DBRFPDN1 */ 6962306a36Sopenharmony_ci ED 0xFD000048, 0x20CF0037 /* DBRFPDN2 */ 7062306a36Sopenharmony_ci ED 0xFD000014, 0x00000004 /* DBCMDCNT (REF) */ 7162306a36Sopenharmony_ci ED 0xFD000108, 0x40000300 /* DBPDCNT0 */ 7262306a36Sopenharmony_ci ED 0xFD000040, 0x00010000 /* DBRFPDN0 */ 7362306a36Sopenharmony_ci 7462306a36Sopenharmony_ci rts 7562306a36Sopenharmony_ci nop 7662306a36Sopenharmony_ci 7762306a36Sopenharmony_ciENTRY(kfr2r09_sdram_leave_end) 78