1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Copyright (C) 2006,2007 Felix Fietkau <nbd@openwrt.org> 4 * Copyright (C) 2006,2007 Eugene Konev <ejka@openwrt.org> 5 */ 6 7 #ifndef __AR7_H__ 8 #define __AR7_H__ 9 10 #include <linux/delay.h> 11 #include <linux/io.h> 12 #include <linux/errno.h> 13 14 #include <asm/addrspace.h> 15 16 #define AR7_SDRAM_BASE 0x14000000 17 18 #define AR7_REGS_BASE 0x08610000 19 20 #define AR7_REGS_MAC0 (AR7_REGS_BASE + 0x0000) 21 #define AR7_REGS_GPIO (AR7_REGS_BASE + 0x0900) 22 /* 0x08610A00 - 0x08610BFF (512 bytes, 128 bytes / clock) */ 23 #define AR7_REGS_POWER (AR7_REGS_BASE + 0x0a00) 24 #define AR7_REGS_CLOCKS (AR7_REGS_POWER + 0x80) 25 #define UR8_REGS_CLOCKS (AR7_REGS_POWER + 0x20) 26 #define AR7_REGS_UART0 (AR7_REGS_BASE + 0x0e00) 27 #define AR7_REGS_USB (AR7_REGS_BASE + 0x1200) 28 #define AR7_REGS_RESET (AR7_REGS_BASE + 0x1600) 29 #define AR7_REGS_PINSEL (AR7_REGS_BASE + 0x160C) 30 #define AR7_REGS_VLYNQ0 (AR7_REGS_BASE + 0x1800) 31 #define AR7_REGS_DCL (AR7_REGS_BASE + 0x1a00) 32 #define AR7_REGS_VLYNQ1 (AR7_REGS_BASE + 0x1c00) 33 #define AR7_REGS_MDIO (AR7_REGS_BASE + 0x1e00) 34 #define AR7_REGS_IRQ (AR7_REGS_BASE + 0x2400) 35 #define AR7_REGS_MAC1 (AR7_REGS_BASE + 0x2800) 36 37 #define AR7_REGS_WDT (AR7_REGS_BASE + 0x1f00) 38 #define UR8_REGS_WDT (AR7_REGS_BASE + 0x0b00) 39 #define UR8_REGS_UART1 (AR7_REGS_BASE + 0x0f00) 40 41 /* Titan registers */ 42 #define TITAN_REGS_ESWITCH_BASE (0x08640000) 43 #define TITAN_REGS_MAC0 (TITAN_REGS_ESWITCH_BASE) 44 #define TITAN_REGS_MAC1 (TITAN_REGS_ESWITCH_BASE + 0x0800) 45 #define TITAN_REGS_MDIO (TITAN_REGS_ESWITCH_BASE + 0x02000) 46 #define TITAN_REGS_VLYNQ0 (AR7_REGS_BASE + 0x1c00) 47 #define TITAN_REGS_VLYNQ1 (AR7_REGS_BASE + 0x1300) 48 49 #define AR7_RESET_PERIPHERAL 0x0 50 #define AR7_RESET_SOFTWARE 0x4 51 #define AR7_RESET_STATUS 0x8 52 53 #define AR7_RESET_BIT_CPMAC_LO 17 54 #define AR7_RESET_BIT_CPMAC_HI 21 55 #define AR7_RESET_BIT_MDIO 22 56 #define AR7_RESET_BIT_EPHY 26 57 58 #define TITAN_RESET_BIT_EPHY1 28 59 60 /* GPIO control registers */ 61 #define AR7_GPIO_INPUT 0x0 62 #define AR7_GPIO_OUTPUT 0x4 63 #define AR7_GPIO_DIR 0x8 64 #define AR7_GPIO_ENABLE 0xc 65 #define TITAN_GPIO_INPUT_0 0x0 66 #define TITAN_GPIO_INPUT_1 0x4 67 #define TITAN_GPIO_OUTPUT_0 0x8 68 #define TITAN_GPIO_OUTPUT_1 0xc 69 #define TITAN_GPIO_DIR_0 0x10 70 #define TITAN_GPIO_DIR_1 0x14 71 #define TITAN_GPIO_ENBL_0 0x18 72 #define TITAN_GPIO_ENBL_1 0x1c 73 74 #define AR7_CHIP_7100 0x18 75 #define AR7_CHIP_7200 0x2b 76 #define AR7_CHIP_7300 0x05 77 #define AR7_CHIP_TITAN 0x07 78 #define TITAN_CHIP_1050 0x0f 79 #define TITAN_CHIP_1055 0x0e 80 #define TITAN_CHIP_1056 0x0d 81 #define TITAN_CHIP_1060 0x07 82 83 /* Interrupts */ 84 #define AR7_IRQ_UART0 15 85 #define AR7_IRQ_UART1 16 86 87 /* Clocks */ 88 #define AR7_AFE_CLOCK 35328000 89 #define AR7_REF_CLOCK 25000000 90 #define AR7_XTAL_CLOCK 24000000 91 92 /* DCL */ 93 #define AR7_WDT_HW_ENA 0x10 94 95 struct plat_cpmac_data { 96 int reset_bit; 97 int power_bit; 98 u32 phy_mask; 99 char dev_addr[6]; 100 }; 101 102 struct plat_dsl_data { 103 int reset_bit_dsl; 104 int reset_bit_sar; 105 }; 106 107 extern int ar7_cpu_clock, ar7_bus_clock, ar7_dsp_clock; 108 109 static inline int ar7_is_titan(void) 110 { 111 return (readl((void *)KSEG1ADDR(AR7_REGS_GPIO + 0x24)) & 0xffff) == 112 AR7_CHIP_TITAN; 113 } 114 115 static inline u16 ar7_chip_id(void) 116 { 117 return ar7_is_titan() ? AR7_CHIP_TITAN : (readl((void *) 118 KSEG1ADDR(AR7_REGS_GPIO + 0x14)) & 0xffff); 119 } 120 121 static inline u16 titan_chip_id(void) 122 { 123 unsigned int val = readl((void *)KSEG1ADDR(AR7_REGS_GPIO + 124 TITAN_GPIO_INPUT_1)); 125 return ((val >> 12) & 0x0f); 126 } 127 128 static inline u8 ar7_chip_rev(void) 129 { 130 return (readl((void *)KSEG1ADDR(AR7_REGS_GPIO + (ar7_is_titan() ? 0x24 : 131 0x14))) >> 16) & 0xff; 132 } 133 134 struct clk { 135 unsigned int rate; 136 }; 137 138 static inline int ar7_has_high_cpmac(void) 139 { 140 u16 chip_id = ar7_chip_id(); 141 switch (chip_id) { 142 case AR7_CHIP_7100: 143 case AR7_CHIP_7200: 144 return 0; 145 case AR7_CHIP_7300: 146 return 1; 147 default: 148 return -ENXIO; 149 } 150 } 151 #define ar7_has_high_vlynq ar7_has_high_cpmac 152 #define ar7_has_second_uart ar7_has_high_cpmac 153 154 static inline void ar7_device_enable(u32 bit) 155 { 156 void *reset_reg = 157 (void *)KSEG1ADDR(AR7_REGS_RESET + AR7_RESET_PERIPHERAL); 158 writel(readl(reset_reg) | (1 << bit), reset_reg); 159 msleep(20); 160 } 161 162 static inline void ar7_device_disable(u32 bit) 163 { 164 void *reset_reg = 165 (void *)KSEG1ADDR(AR7_REGS_RESET + AR7_RESET_PERIPHERAL); 166 writel(readl(reset_reg) & ~(1 << bit), reset_reg); 167 msleep(20); 168 } 169 170 static inline void ar7_device_reset(u32 bit) 171 { 172 ar7_device_disable(bit); 173 ar7_device_enable(bit); 174 } 175 176 static inline void ar7_device_on(u32 bit) 177 { 178 void *power_reg = (void *)KSEG1ADDR(AR7_REGS_POWER); 179 writel(readl(power_reg) | (1 << bit), power_reg); 180 msleep(20); 181 } 182 183 static inline void ar7_device_off(u32 bit) 184 { 185 void *power_reg = (void *)KSEG1ADDR(AR7_REGS_POWER); 186 writel(readl(power_reg) & ~(1 << bit), power_reg); 187 msleep(20); 188 } 189 190 int __init ar7_gpio_init(void); 191 void __init ar7_init_clocks(void); 192 193 /* Board specific GPIO functions */ 194 int ar7_gpio_enable(unsigned gpio); 195 int ar7_gpio_disable(unsigned gpio); 196 197 #endif /* __AR7_H__ */ 198