1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  *
4  * Parts of this file are based on Ralink's 2.6.21 BSP
5  *
6  * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
7  * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
8  * Copyright (C) 2013 John Crispin <john@phrozen.org>
9  */
10 
11 #ifndef _MT7620_REGS_H_
12 #define _MT7620_REGS_H_
13 
14 #define MT7620_SYSC_BASE		0x10000000
15 
16 #define SYSC_REG_CHIP_NAME0		0x00
17 #define SYSC_REG_CHIP_NAME1		0x04
18 #define SYSC_REG_EFUSE_CFG		0x08
19 #define SYSC_REG_CHIP_REV		0x0c
20 #define SYSC_REG_SYSTEM_CONFIG0		0x10
21 #define SYSC_REG_SYSTEM_CONFIG1		0x14
22 #define SYSC_REG_CLKCFG0		0x2c
23 #define SYSC_REG_CPU_SYS_CLKCFG		0x3c
24 #define SYSC_REG_CPLL_CONFIG0		0x54
25 #define SYSC_REG_CPLL_CONFIG1		0x58
26 
27 #define MT7620_CHIP_NAME0		0x3637544d
28 #define MT7620_CHIP_NAME1		0x20203032
29 #define MT7628_CHIP_NAME1		0x20203832
30 
31 #define SYSCFG0_XTAL_FREQ_SEL		BIT(6)
32 
33 #define CHIP_REV_PKG_MASK		0x1
34 #define CHIP_REV_PKG_SHIFT		16
35 #define CHIP_REV_VER_MASK		0xf
36 #define CHIP_REV_VER_SHIFT		8
37 #define CHIP_REV_ECO_MASK		0xf
38 
39 #define CLKCFG0_PERI_CLK_SEL		BIT(4)
40 
41 #define CPU_SYS_CLKCFG_OCP_RATIO_SHIFT	16
42 #define CPU_SYS_CLKCFG_OCP_RATIO_MASK	0xf
43 #define CPU_SYS_CLKCFG_OCP_RATIO_1	0	/* 1:1   (Reserved) */
44 #define CPU_SYS_CLKCFG_OCP_RATIO_1_5	1	/* 1:1.5 (Reserved) */
45 #define CPU_SYS_CLKCFG_OCP_RATIO_2	2	/* 1:2   */
46 #define CPU_SYS_CLKCFG_OCP_RATIO_2_5	3       /* 1:2.5 (Reserved) */
47 #define CPU_SYS_CLKCFG_OCP_RATIO_3	4	/* 1:3   */
48 #define CPU_SYS_CLKCFG_OCP_RATIO_3_5	5	/* 1:3.5 (Reserved) */
49 #define CPU_SYS_CLKCFG_OCP_RATIO_4	6	/* 1:4   */
50 #define CPU_SYS_CLKCFG_OCP_RATIO_5	7	/* 1:5   */
51 #define CPU_SYS_CLKCFG_OCP_RATIO_10	8	/* 1:10  */
52 #define CPU_SYS_CLKCFG_CPU_FDIV_SHIFT	8
53 #define CPU_SYS_CLKCFG_CPU_FDIV_MASK	0x1f
54 #define CPU_SYS_CLKCFG_CPU_FFRAC_SHIFT	0
55 #define CPU_SYS_CLKCFG_CPU_FFRAC_MASK	0x1f
56 
57 #define CPLL_CFG0_SW_CFG		BIT(31)
58 #define CPLL_CFG0_PLL_MULT_RATIO_SHIFT	16
59 #define CPLL_CFG0_PLL_MULT_RATIO_MASK   0x7
60 #define CPLL_CFG0_LC_CURFCK		BIT(15)
61 #define CPLL_CFG0_BYPASS_REF_CLK	BIT(14)
62 #define CPLL_CFG0_PLL_DIV_RATIO_SHIFT	10
63 #define CPLL_CFG0_PLL_DIV_RATIO_MASK	0x3
64 
65 #define CPLL_CFG1_CPU_AUX1		BIT(25)
66 #define CPLL_CFG1_CPU_AUX0		BIT(24)
67 
68 #define SYSCFG0_DRAM_TYPE_MASK		0x3
69 #define SYSCFG0_DRAM_TYPE_SHIFT		4
70 #define SYSCFG0_DRAM_TYPE_SDRAM		0
71 #define SYSCFG0_DRAM_TYPE_DDR1		1
72 #define SYSCFG0_DRAM_TYPE_DDR2		2
73 #define SYSCFG0_DRAM_TYPE_UNKNOWN	3
74 
75 #define SYSCFG0_DRAM_TYPE_DDR2_MT7628	0
76 #define SYSCFG0_DRAM_TYPE_DDR1_MT7628	1
77 
78 #define MT7620_DRAM_BASE		0x0
79 #define MT7620_SDRAM_SIZE_MIN		2
80 #define MT7620_SDRAM_SIZE_MAX		64
81 #define MT7620_DDR1_SIZE_MIN		32
82 #define MT7620_DDR1_SIZE_MAX		128
83 #define MT7620_DDR2_SIZE_MIN		32
84 #define MT7620_DDR2_SIZE_MAX		256
85 
86 extern enum ralink_soc_type ralink_soc;
87 
88 static inline int is_mt76x8(void)
89 {
90 	return ralink_soc == MT762X_SOC_MT7628AN ||
91 	       ralink_soc == MT762X_SOC_MT7688;
92 }
93 
94 static inline int mt7620_get_eco(void)
95 {
96 	return rt_sysc_r32(SYSC_REG_CHIP_REV) & CHIP_REV_ECO_MASK;
97 }
98 
99 #endif
100