arch/arm/mach-sa1100/shannon.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * linux/arch/arm/mach-sa1100/shannon.c
   4  */
   5
   6 #include <linux/init.h>
   7 #include <linux/device.h>
   8 #include <linux/kernel.h>
   9 #include <linux/platform_data/sa11x0-serial.h>
  10 #include <linux/tty.h>
  11 #include <linux/mtd/mtd.h>
  12 #include <linux/mtd/partitions.h>
  13
  14 #include <video/sa1100fb.h>
  15
  16 #include <mach/hardware.h>
  17 #include <asm/mach-types.h>
  18 #include <asm/setup.h>
  19
  20 #include <asm/mach/arch.h>
  21 #include <asm/mach/flash.h>
  22 #include <asm/mach/map.h>
  23 #include <linux/platform_data/mfd-mcp-sa11x0.h>
  24 #include <mach/shannon.h>
  25 #include <mach/irqs.h>
  26
  27 #include "generic.h"
  28
  29 static struct mtd_partition shannon_partitions[] = {
  30         {
  31                 .name           = "BLOB boot loader",
  32                 .offset         = 0,
  33                 .size           = 0x20000
  34         },
  35         {
  36                 .name           = "kernel",
  37                 .offset         = MTDPART_OFS_APPEND,
  38                 .size           = 0xe0000
  39         },
  40         {
  41                 .name           = "initrd",
  42                 .offset         = MTDPART_OFS_APPEND,
  43                 .size           = MTDPART_SIZ_FULL
  44         }
  45 };
  46
  47 static struct flash_platform_data shannon_flash_data = {
  48         .map_name       = "cfi_probe",
  49         .parts          = shannon_partitions,
  50         .nr_parts       = ARRAY_SIZE(shannon_partitions),
  51 };
  52
  53 static struct resource shannon_flash_resource =
  54         DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_4M);
  55
  56 static struct mcp_plat_data shannon_mcp_data = {
  57         .mccr0          = MCCR0_ADM,
  58         .sclk_rate      = 11981000,
  59 };
  60
  61 static struct sa1100fb_mach_info shannon_lcd_info = {
  62         .pixclock       = 152500,       .bpp            = 8,
  63         .xres           = 640,          .yres           = 480,
  64
  65         .hsync_len      = 4,            .vsync_len      = 3,
  66         .left_margin    = 2,            .upper_margin   = 0,
  67         .right_margin   = 1,            .lower_margin   = 0,
  68
  69         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  70
  71         .lccr0          = LCCR0_Color | LCCR0_Dual | LCCR0_Pas,
  72         .lccr3          = LCCR3_ACBsDiv(512),
  73 };
  74
  75 static void __init shannon_init(void)
  76 {
  77         sa11x0_ppc_configure_mcp();
  78         sa11x0_register_lcd(&shannon_lcd_info);
  79         sa11x0_register_mtd(&shannon_flash_data, &shannon_flash_resource, 1);
  80         sa11x0_register_mcp(&shannon_mcp_data);
  81 }
  82
  83 static void __init shannon_map_io(void)
  84 {
  85         sa1100_map_io();
  86
  87         sa1100_register_uart(0, 3);
  88         sa1100_register_uart(1, 1);
  89
  90         Ser1SDCR0 |= SDCR0_SUS;
  91         GAFR |= (GPIO_UART_TXD | GPIO_UART_RXD);
  92         GPDR |= GPIO_UART_TXD | SHANNON_GPIO_CODEC_RESET;
  93         GPDR &= ~GPIO_UART_RXD;
  94         PPAR |= PPAR_UPR;
  95
  96         /* reset the codec */
  97         GPCR = SHANNON_GPIO_CODEC_RESET;
  98         GPSR = SHANNON_GPIO_CODEC_RESET;
  99 }
 100
 101 MACHINE_START(SHANNON, "Shannon (AKA: Tuxscreen)")
 102         .atag_offset    = 0x100,
 103         .map_io         = shannon_map_io,
 104         .nr_irqs        = SA1100_NR_IRQS,
 105         .init_irq       = sa1100_init_irq,
 106         .init_time      = sa1100_timer_init,
 107         .init_machine   = shannon_init,
 108         .init_late      = sa11x0_init_late,
 109         .restart        = sa11x0_restart,
 110 MACHINE_END