/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * Copyright (C) 2017 Soeren Moch <smoch@web.de>
 */

#define __ASSEMBLY__
#include "asm/arch/crm_regs.h"
#include "asm/arch/iomux.h"
#include "asm/arch/mx6-ddr.h"

/* image version 2 for imx6 */
IMAGE_VERSION 2
BOOT_FROM sd

/* set the default clock gates to save power */
DATA 4, CCM_CCGR0, 0x00C03F3F
DATA 4, CCM_CCGR1, 0x0030FC03
DATA 4, CCM_CCGR2, 0x0FFFC000
DATA 4, CCM_CCGR3, 0x3FF00000
DATA 4, CCM_CCGR4, 0x00FFF300
DATA 4, CCM_CCGR5, 0x0F0000C3
DATA 4, CCM_CCGR6, 0x000003FF
/* set CKO1 (used as AUDIO_MCLK) to ahb_clk_root/8 = 16.5 MHz */
DATA 4, CCM_CCOSR, 0x000000fb

/* enable AXI cache for VDOA/VPU/IPU */
DATA 4, MX6_IOMUXC_GPR4, 0xF00000CF
/* set IPU AXI-id1 Qos=0x1 AXI-id0/2/3 Qos=0x7 */
DATA 4, MX6_IOMUXC_GPR6, 0x77177717
DATA 4, MX6_IOMUXC_GPR7, 0x77177717


/*
 * DDR3/DDR3L settings
 * use default 40 Ohm pad drive strength, no odt
 * 4x256Mx16 DDR3L-1066 7-7-7
 */

/* disable dq pullup */
DATA 4, MX6_IOM_GRP_DDRPKE, 0x00000000
/* disable dqs pullup */
DATA 4, MX6_IOM_DRAM_SDQS0, 0x00000030
DATA 4, MX6_IOM_DRAM_SDQS1, 0x00000030
DATA 4, MX6_IOM_DRAM_SDQS2, 0x00000030
DATA 4, MX6_IOM_DRAM_SDQS3, 0x00000030
DATA 4, MX6_IOM_DRAM_SDQS4, 0x00000030
DATA 4, MX6_IOM_DRAM_SDQS5, 0x00000030
DATA 4, MX6_IOM_DRAM_SDQS6, 0x00000030
DATA 4, MX6_IOM_DRAM_SDQS7, 0x00000030
/* set ddr input mode for dq signals */
DATA 4, MX6_IOM_GRP_DDRMODE, 0x00020000
/* set ddr input mode for dqs signals */
DATA 4, MX6_IOM_DDRMODE_CTL, 0x00020000
/* set pad calibration type to DDR3 */
DATA 4, MX6_IOM_GRP_DDR_TYPE, 0x000C0000
/* ZQ calibration */
DATA 4, MX6_MMDC_P0_MPZQHWCTRL, 0xA1390003
/* dqs write delay */
DATA 4, MX6_MMDC_P0_MPWLDECTRL0, 0x001f001f
DATA 4, MX6_MMDC_P0_MPWLDECTRL1, 0x001f001f
DATA 4, MX6_MMDC_P1_MPWLDECTRL0, 0x001f001f
DATA 4, MX6_MMDC_P1_MPWLDECTRL1, 0x001f001f
/* dqs read delay */
DATA 4, MX6_MMDC_P0_MPRDDQBY0DL, 0x33333333
DATA 4, MX6_MMDC_P0_MPRDDQBY1DL, 0x33333333
DATA 4, MX6_MMDC_P0_MPRDDQBY2DL, 0x33333333
DATA 4, MX6_MMDC_P0_MPRDDQBY3DL, 0x33333333
DATA 4, MX6_MMDC_P1_MPRDDQBY0DL, 0x33333333
DATA 4, MX6_MMDC_P1_MPRDDQBY1DL, 0x33333333
DATA 4, MX6_MMDC_P1_MPRDDQBY2DL, 0x33333333
DATA 4, MX6_MMDC_P1_MPRDDQBY3DL, 0x33333333
/* dqs read gating control */
DATA 4, MX6_MMDC_P0_MPDGCTRL0, 0x43000300
DATA 4, MX6_MMDC_P0_MPDGCTRL1, 0x03000300
DATA 4, MX6_MMDC_P1_MPDGCTRL0, 0x43000300
DATA 4, MX6_MMDC_P1_MPDGCTRL1, 0x03000300
/* start delay line calibration */
DATA 4, MX6_MMDC_P0_MPMUR0, 0x00000800
/* tRFC=0x89+1,tXS=0x8e+1,tXP=3+1,tXPDLL=0xc+1,tFAW=0x17+1,tCL=0x4+3 */
DATA 4, MX6_MMDC_P0_MDCFG0, 0x898E7974
/* tRCD=6+1,tRP=6+1,tRC=0x1a+1,tRAS=0x13+1,tRPA=tRP+1,tWR=7+1,tMRD=0xb+1,tCWL=4+2 */
DATA 4, MX6_MMDC_P0_MDCFG1, 0xDB538F64
/* tDLLK=0x1ff+1,tRTP=3+1,tWTR=3+1,tRRD=3+1 */
DATA 4, MX6_MMDC_P0_MDCFG2, 0x01FF00DB
/* RTW_SAME=2,WTR_DIFF=3,WTW_DIFF=3,RTW_DIFF=2,RTR_DIFF=2 */
DATA 4, MX6_MMDC_P0_MDRWD, 0x000026D2
/* tXPR=0x8e+1,SDE2RST=0x10-2,RST2CKE=0x23-2 */
DATA 4, MX6_MMDC_P0_MDOR, 0x008E1023
/* ODT timing */
DATA 4, MX6_MMDC_P0_MDOTC, 0x09444040
/* read odt settings, 120 Ohm */
DATA 4, MX6_MMDC_P0_MPODTCTRL, 0x00011117
DATA 4, MX6_MMDC_P1_MPODTCTRL, 0x00011117
/* cs0, 15-bit row, 10-bit column, BL 8, 64-bit bus */
DATA 4, MX6_MMDC_P0_MDCTL, 0x841A0000
/* interleaved bank access (row/bank/col), 5 cycles additional read delay */
DATA 4, MX6_MMDC_P0_MDMISC, 0x00001740
/* 2GiByte RAM at cs0 */
DATA 4, MX6_MMDC_P0_MDASP, 0x00000047
/* load mode registers of external ddr chips */
DATA 4, MX6_MMDC_P0_MDSCR, 0x19308030
DATA 4, MX6_MMDC_P0_MDSCR, 0x00428031
DATA 4, MX6_MMDC_P0_MDSCR, 0x04088032
DATA 4, MX6_MMDC_P0_MDSCR, 0x00008033
/* externel chip ZQ calibration */
DATA 4, MX6_MMDC_P0_MDSCR, 0x04008040
/* configure and start refreshes, 8 refresh commands at 32 kHz */
DATA 4, MX6_MMDC_P0_MDREF, 0x00007800
/* tCKE=2+1,tCKSRX=6,tCKSE=6, active power down after 256 cycles (setting 5) */
DATA 4, MX6_MMDC_P0_MDPDC, 0x00025576
/* set automatic self refresh */
DATA 4, MX6_MMDC_P0_MAPSR, 0x00011006
/* controller configuration finished */
DATA 4, MX6_MMDC_P0_MDSCR, 0x00000000