3 * Mark Jonas <mark.jonas@de.bosch.com>
6 * Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
8 * board/mpr2/lowlevel_init.S
10 * SPDX-License-Identifier: GPL-2.0+
12 #include <asm/macro.h>
22 * Set frequency multipliers and dividers in FRQCR.
24 write16 WTCSR_A, WTCSR_D
26 write16 WTCNT_A, WTCNT_D
28 write16 FRQCR_A, FRQCR_D
33 write32 CS0BCR_A, CS0BCR_D
35 write32 CS0WCR_A, CS0WCR_D
40 write32 CS3BCR_A, CS3BCR_D
42 write32 CS3WCR_A, CS3WCR_D
44 write32 SDCR_A, SDCR_D1
46 write32 RTCSR_A, RTCSR_D
48 write32 RTCNT_A, RTCNT_D
50 write32 RTCOR_A, RTCOR_D
52 write32 SDCR_A, SDCR_D2
66 * Configuration for MPR2 A.3 through A.7
72 FRQCR_D: .word 0x1103 /* I:B:P=8:4:2 */
73 WTCNT_D: .word 0x5A00 /* start counting at zero */
74 WTCSR_D: .word 0xA507 /* divide by 4096 */
77 * Spansion S29GL256N11 @ 48 MHz
79 /* 1 idle cycle inserted, normal space, 16 bit */
80 CS0BCR_D: .long 0x12490400
81 /* tSW=0.5ck, 6 wait cycles, NO external wait, tHW=0.5ck */
82 CS0WCR_D: .long 0x00000340
85 * Samsung K4S511632B-UL75 @ 48 MHz
86 * Micron MT48LC32M16A2-75 @ 48 MHz
88 /* CS3BCR = 0x10004400, minimum idle cycles, SDRAM, 16 bit */
89 CS3BCR_D: .long 0x10004400
90 /* tRP=1ck, tRCD=1ck, CL=2, tRWL=2ck, tRC=4ck */
91 CS3WCR_D: .long 0x00000091
92 /* no refresh, 13 rows, 10 cols, NO bank active mode */
93 SDCR_D1: .long 0x00000012
94 SDCR_D2: .long 0x00000812 /* refresh */
95 RTCSR_D: .long 0xA55A0008 /* 1/4, once */
96 RTCNT_D: .long 0xA55A005D /* count 93 */
97 RTCOR_D: .long 0xa55a005d /* count 93 */
98 /* mode register CL2, burst read and SINGLE WRITE */
105 FRQCR_A: .long 0xA415FF80
106 WTCNT_A: .long 0xA415FF84
107 WTCSR_A: .long 0xA415FF86
109 #define BSC_BASE 0xA4FD0000
110 CS0BCR_A: .long BSC_BASE + 0x04
111 CS3BCR_A: .long BSC_BASE + 0x0C
112 CS0WCR_A: .long BSC_BASE + 0x24
113 CS3WCR_A: .long BSC_BASE + 0x2C
114 SDCR_A: .long BSC_BASE + 0x44
115 RTCSR_A: .long BSC_BASE + 0x48
116 RTCNT_A: .long BSC_BASE + 0x4C
117 RTCOR_A: .long BSC_BASE + 0x50
118 SDMR3_A: .long BSC_BASE + 0x5000