1 /* SPDX-License-Identifier: GPL-2.0+ */
4 * Mark Jonas <mark.jonas@de.bosch.com>
7 * Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
9 * board/mpr2/lowlevel_init.S
11 #include <asm/macro.h>
21 * Set frequency multipliers and dividers in FRQCR.
23 write16 WTCSR_A, WTCSR_D
25 write16 WTCNT_A, WTCNT_D
27 write16 FRQCR_A, FRQCR_D
32 write32 CS0BCR_A, CS0BCR_D
34 write32 CS0WCR_A, CS0WCR_D
39 write32 CS3BCR_A, CS3BCR_D
41 write32 CS3WCR_A, CS3WCR_D
43 write32 SDCR_A, SDCR_D1
45 write32 RTCSR_A, RTCSR_D
47 write32 RTCNT_A, RTCNT_D
49 write32 RTCOR_A, RTCOR_D
51 write32 SDCR_A, SDCR_D2
65 * Configuration for MPR2 A.3 through A.7
71 FRQCR_D: .word 0x1103 /* I:B:P=8:4:2 */
72 WTCNT_D: .word 0x5A00 /* start counting at zero */
73 WTCSR_D: .word 0xA507 /* divide by 4096 */
76 * Spansion S29GL256N11 @ 48 MHz
78 /* 1 idle cycle inserted, normal space, 16 bit */
79 CS0BCR_D: .long 0x12490400
80 /* tSW=0.5ck, 6 wait cycles, NO external wait, tHW=0.5ck */
81 CS0WCR_D: .long 0x00000340
84 * Samsung K4S511632B-UL75 @ 48 MHz
85 * Micron MT48LC32M16A2-75 @ 48 MHz
87 /* CS3BCR = 0x10004400, minimum idle cycles, SDRAM, 16 bit */
88 CS3BCR_D: .long 0x10004400
89 /* tRP=1ck, tRCD=1ck, CL=2, tRWL=2ck, tRC=4ck */
90 CS3WCR_D: .long 0x00000091
91 /* no refresh, 13 rows, 10 cols, NO bank active mode */
92 SDCR_D1: .long 0x00000012
93 SDCR_D2: .long 0x00000812 /* refresh */
94 RTCSR_D: .long 0xA55A0008 /* 1/4, once */
95 RTCNT_D: .long 0xA55A005D /* count 93 */
96 RTCOR_D: .long 0xa55a005d /* count 93 */
97 /* mode register CL2, burst read and SINGLE WRITE */
104 FRQCR_A: .long 0xA415FF80
105 WTCNT_A: .long 0xA415FF84
106 WTCSR_A: .long 0xA415FF86
108 #define BSC_BASE 0xA4FD0000
109 CS0BCR_A: .long BSC_BASE + 0x04
110 CS3BCR_A: .long BSC_BASE + 0x0C
111 CS0WCR_A: .long BSC_BASE + 0x24
112 CS3WCR_A: .long BSC_BASE + 0x2C
113 SDCR_A: .long BSC_BASE + 0x44
114 RTCSR_A: .long BSC_BASE + 0x48
115 RTCNT_A: .long BSC_BASE + 0x4C
116 RTCOR_A: .long BSC_BASE + 0x50
117 SDMR3_A: .long BSC_BASE + 0x5000