arch/arm/mach-spear/spear320.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * arch/arm/mach-spear3xx/spear320.c
   4  *
   5  * SPEAr320 machine source file
   6  *
   7  * Copyright (C) 2009-2012 ST Microelectronics
   8  * Viresh Kumar <vireshk@kernel.org>
   9  */
  10
  11 #define pr_fmt(fmt) "SPEAr320: " fmt
  12
  13 #include <linux/amba/pl022.h>
  14 #include <linux/amba/pl08x.h>
  15 #include <linux/amba/serial.h>
  16 #include <linux/of_platform.h>
  17 #include <asm/mach/arch.h>
  18 #include <asm/mach/map.h>
  19 #include "generic.h"
  20 #include "spear.h"
  21
  22 #define SPEAR320_UART1_BASE             UL(0xA3000000)
  23 #define SPEAR320_UART2_BASE             UL(0xA4000000)
  24 #define SPEAR320_SSP0_BASE              UL(0xA5000000)
  25 #define SPEAR320_SSP1_BASE              UL(0xA6000000)
  26
  27 /* DMAC platform data's slave info */
  28 struct pl08x_channel_data spear320_dma_info[] = {
  29         {
  30                 .bus_id = "uart0_rx",
  31                 .min_signal = 2,
  32                 .max_signal = 2,
  33                 .muxval = 0,
  34                 .periph_buses = PL08X_AHB1,
  35         }, {
  36                 .bus_id = "uart0_tx",
  37                 .min_signal = 3,
  38                 .max_signal = 3,
  39                 .muxval = 0,
  40                 .periph_buses = PL08X_AHB1,
  41         }, {
  42                 .bus_id = "ssp0_rx",
  43                 .min_signal = 8,
  44                 .max_signal = 8,
  45                 .muxval = 0,
  46                 .periph_buses = PL08X_AHB1,
  47         }, {
  48                 .bus_id = "ssp0_tx",
  49                 .min_signal = 9,
  50                 .max_signal = 9,
  51                 .muxval = 0,
  52                 .periph_buses = PL08X_AHB1,
  53         }, {
  54                 .bus_id = "i2c0_rx",
  55                 .min_signal = 10,
  56                 .max_signal = 10,
  57                 .muxval = 0,
  58                 .periph_buses = PL08X_AHB1,
  59         }, {
  60                 .bus_id = "i2c0_tx",
  61                 .min_signal = 11,
  62                 .max_signal = 11,
  63                 .muxval = 0,
  64                 .periph_buses = PL08X_AHB1,
  65         }, {
  66                 .bus_id = "irda",
  67                 .min_signal = 12,
  68                 .max_signal = 12,
  69                 .muxval = 0,
  70                 .periph_buses = PL08X_AHB1,
  71         }, {
  72                 .bus_id = "adc",
  73                 .min_signal = 13,
  74                 .max_signal = 13,
  75                 .muxval = 0,
  76                 .periph_buses = PL08X_AHB1,
  77         }, {
  78                 .bus_id = "to_jpeg",
  79                 .min_signal = 14,
  80                 .max_signal = 14,
  81                 .muxval = 0,
  82                 .periph_buses = PL08X_AHB1,
  83         }, {
  84                 .bus_id = "from_jpeg",
  85                 .min_signal = 15,
  86                 .max_signal = 15,
  87                 .muxval = 0,
  88                 .periph_buses = PL08X_AHB1,
  89         }, {
  90                 .bus_id = "ssp1_rx",
  91                 .min_signal = 0,
  92                 .max_signal = 0,
  93                 .muxval = 1,
  94                 .periph_buses = PL08X_AHB2,
  95         }, {
  96                 .bus_id = "ssp1_tx",
  97                 .min_signal = 1,
  98                 .max_signal = 1,
  99                 .muxval = 1,
 100                 .periph_buses = PL08X_AHB2,
 101         }, {
 102                 .bus_id = "ssp2_rx",
 103                 .min_signal = 2,
 104                 .max_signal = 2,
 105                 .muxval = 1,
 106                 .periph_buses = PL08X_AHB2,
 107         }, {
 108                 .bus_id = "ssp2_tx",
 109                 .min_signal = 3,
 110                 .max_signal = 3,
 111                 .muxval = 1,
 112                 .periph_buses = PL08X_AHB2,
 113         }, {
 114                 .bus_id = "uart1_rx",
 115                 .min_signal = 4,
 116                 .max_signal = 4,
 117                 .muxval = 1,
 118                 .periph_buses = PL08X_AHB2,
 119         }, {
 120                 .bus_id = "uart1_tx",
 121                 .min_signal = 5,
 122                 .max_signal = 5,
 123                 .muxval = 1,
 124                 .periph_buses = PL08X_AHB2,
 125         }, {
 126                 .bus_id = "uart2_rx",
 127                 .min_signal = 6,
 128                 .max_signal = 6,
 129                 .muxval = 1,
 130                 .periph_buses = PL08X_AHB2,
 131         }, {
 132                 .bus_id = "uart2_tx",
 133                 .min_signal = 7,
 134                 .max_signal = 7,
 135                 .muxval = 1,
 136                 .periph_buses = PL08X_AHB2,
 137         }, {
 138                 .bus_id = "i2c1_rx",
 139                 .min_signal = 8,
 140                 .max_signal = 8,
 141                 .muxval = 1,
 142                 .periph_buses = PL08X_AHB2,
 143         }, {
 144                 .bus_id = "i2c1_tx",
 145                 .min_signal = 9,
 146                 .max_signal = 9,
 147                 .muxval = 1,
 148                 .periph_buses = PL08X_AHB2,
 149         }, {
 150                 .bus_id = "i2c2_rx",
 151                 .min_signal = 10,
 152                 .max_signal = 10,
 153                 .muxval = 1,
 154                 .periph_buses = PL08X_AHB2,
 155         }, {
 156                 .bus_id = "i2c2_tx",
 157                 .min_signal = 11,
 158                 .max_signal = 11,
 159                 .muxval = 1,
 160                 .periph_buses = PL08X_AHB2,
 161         }, {
 162                 .bus_id = "i2s_rx",
 163                 .min_signal = 12,
 164                 .max_signal = 12,
 165                 .muxval = 1,
 166                 .periph_buses = PL08X_AHB2,
 167         }, {
 168                 .bus_id = "i2s_tx",
 169                 .min_signal = 13,
 170                 .max_signal = 13,
 171                 .muxval = 1,
 172                 .periph_buses = PL08X_AHB2,
 173         }, {
 174                 .bus_id = "rs485_rx",
 175                 .min_signal = 14,
 176                 .max_signal = 14,
 177                 .muxval = 1,
 178                 .periph_buses = PL08X_AHB2,
 179         }, {
 180                 .bus_id = "rs485_tx",
 181                 .min_signal = 15,
 182                 .max_signal = 15,
 183                 .muxval = 1,
 184                 .periph_buses = PL08X_AHB2,
 185         },
 186 };
 187
 188 static struct pl022_ssp_controller spear320_ssp_data[] = {
 189         {
 190                 .bus_id = 1,
 191                 .enable_dma = 1,
 192                 .dma_filter = pl08x_filter_id,
 193                 .dma_tx_param = "ssp1_tx",
 194                 .dma_rx_param = "ssp1_rx",
 195         }, {
 196                 .bus_id = 2,
 197                 .enable_dma = 1,
 198                 .dma_filter = pl08x_filter_id,
 199                 .dma_tx_param = "ssp2_tx",
 200                 .dma_rx_param = "ssp2_rx",
 201         }
 202 };
 203
 204 static struct amba_pl011_data spear320_uart_data[] = {
 205         {
 206                 .dma_filter = pl08x_filter_id,
 207                 .dma_tx_param = "uart1_tx",
 208                 .dma_rx_param = "uart1_rx",
 209         }, {
 210                 .dma_filter = pl08x_filter_id,
 211                 .dma_tx_param = "uart2_tx",
 212                 .dma_rx_param = "uart2_rx",
 213         },
 214 };
 215
 216 /* Add SPEAr310 auxdata to pass platform data */
 217 static struct of_dev_auxdata spear320_auxdata_lookup[] __initdata = {
 218         OF_DEV_AUXDATA("arm,pl022", SPEAR3XX_ICM1_SSP_BASE, NULL,
 219                         &pl022_plat_data),
 220         OF_DEV_AUXDATA("arm,pl080", SPEAR_ICM3_DMA_BASE, NULL,
 221                         &pl080_plat_data),
 222         OF_DEV_AUXDATA("arm,pl022", SPEAR320_SSP0_BASE, NULL,
 223                         &spear320_ssp_data[0]),
 224         OF_DEV_AUXDATA("arm,pl022", SPEAR320_SSP1_BASE, NULL,
 225                         &spear320_ssp_data[1]),
 226         OF_DEV_AUXDATA("arm,pl011", SPEAR320_UART1_BASE, NULL,
 227                         &spear320_uart_data[0]),
 228         OF_DEV_AUXDATA("arm,pl011", SPEAR320_UART2_BASE, NULL,
 229                         &spear320_uart_data[1]),
 230         {}
 231 };
 232
 233 static void __init spear320_dt_init(void)
 234 {
 235         pl080_plat_data.slave_channels = spear320_dma_info;
 236         pl080_plat_data.num_slave_channels = ARRAY_SIZE(spear320_dma_info);
 237
 238         of_platform_default_populate(NULL, spear320_auxdata_lookup, NULL);
 239 }
 240
 241 static const char * const spear320_dt_board_compat[] = {
 242         "st,spear320",
 243         "st,spear320-evb",
 244         "st,spear320-hmi",
 245         NULL,
 246 };
 247
 248 struct map_desc spear320_io_desc[] __initdata = {
 249         {
 250                 .virtual        = (unsigned long)VA_SPEAR320_SOC_CONFIG_BASE,
 251                 .pfn            = __phys_to_pfn(SPEAR320_SOC_CONFIG_BASE),
 252                 .length         = SZ_16M,
 253                 .type           = MT_DEVICE
 254         },
 255 };
 256
 257 static void __init spear320_map_io(void)
 258 {
 259         iotable_init(spear320_io_desc, ARRAY_SIZE(spear320_io_desc));
 260         spear3xx_map_io();
 261 }
 262
 263 DT_MACHINE_START(SPEAR320_DT, "ST SPEAr320 SoC with Flattened Device Tree")
 264         .map_io         =       spear320_map_io,
 265         .init_time      =       spear3xx_timer_init,
 266         .init_machine   =       spear320_dt_init,
 267         .restart        =       spear_restart,
 268         .dt_compat      =       spear320_dt_board_compat,
 269 MACHINE_END