arch/arm/mach-pxa/colibri-pxa3xx.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *  arch/arm/mach-pxa/colibri-pxa3xx.c
   4  *
   5  *  Common functions for all Toradex PXA3xx modules
   6  *
   7  *  Daniel Mack <daniel@caiaq.de>
   8  */
   9
  10 #include <linux/init.h>
  11 #include <linux/kernel.h>
  12 #include <linux/platform_device.h>
  13 #include <linux/gpio.h>
  14 #include <linux/etherdevice.h>
  15 #include <asm/mach-types.h>
  16 #include <mach/hardware.h>
  17 #include <linux/sizes.h>
  18 #include <asm/system_info.h>
  19 #include <asm/mach/arch.h>
  20 #include <asm/mach/irq.h>
  21 #include <mach/pxa3xx-regs.h>
  22 #include "mfp-pxa300.h"
  23 #include "colibri.h"
  24 #include <linux/platform_data/mmc-pxamci.h>
  25 #include <linux/platform_data/video-pxafb.h>
  26 #include <linux/platform_data/mtd-nand-pxa3xx.h>
  27
  28 #include "generic.h"
  29 #include "devices.h"
  30
  31 #if defined(CONFIG_AX88796)
  32 #define ETHER_ADDR_LEN 6
  33 static u8 ether_mac_addr[ETHER_ADDR_LEN];
  34
  35 void __init colibri_pxa3xx_init_eth(struct ax_plat_data *plat_data)
  36 {
  37         int i;
  38         u64 serial = ((u64) system_serial_high << 32) | system_serial_low;
  39
  40         /*
  41          * If the bootloader passed in a serial boot tag, which contains a
  42          * valid ethernet MAC, pass it to the interface. Toradex ships the
  43          * modules with their own bootloader which provides a valid MAC
  44          * this way.
  45          */
  46
  47         for (i = 0; i < ETHER_ADDR_LEN; i++) {
  48                 ether_mac_addr[i] = serial & 0xff;
  49                 serial >>= 8;
  50         }
  51
  52         if (is_valid_ether_addr(ether_mac_addr)) {
  53                 plat_data->flags |= AXFLG_MAC_FROMPLATFORM;
  54                 plat_data->mac_addr = ether_mac_addr;
  55                 printk(KERN_INFO "%s(): taking MAC from serial boot tag\n",
  56                         __func__);
  57         } else {
  58                 plat_data->flags |= AXFLG_MAC_FROMDEV;
  59                 printk(KERN_INFO "%s(): no valid serial boot tag found, "
  60                         "taking MAC from device\n", __func__);
  61         }
  62 }
  63 #endif
  64
  65 #if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
  66 static int lcd_bl_pin;
  67
  68 /*
  69  * LCD panel (Sharp LQ043T3DX02)
  70  */
  71 static void colibri_lcd_backlight(int on)
  72 {
  73         gpio_set_value(lcd_bl_pin, !!on);
  74 }
  75
  76 static struct pxafb_mode_info sharp_lq43_mode = {
  77         .pixclock       = 101936,
  78         .xres           = 480,
  79         .yres           = 272,
  80         .bpp            = 32,
  81         .depth          = 18,
  82         .hsync_len      = 41,
  83         .left_margin    = 2,
  84         .right_margin   = 2,
  85         .vsync_len      = 10,
  86         .upper_margin   = 2,
  87         .lower_margin   = 2,
  88         .sync           = 0,
  89         .cmap_greyscale = 0,
  90 };
  91
  92 static struct pxafb_mach_info sharp_lq43_info = {
  93         .modes          = &sharp_lq43_mode,
  94         .num_modes      = 1,
  95         .cmap_inverse   = 0,
  96         .cmap_static    = 0,
  97         .lcd_conn       = LCD_COLOR_TFT_18BPP,
  98         .pxafb_backlight_power = colibri_lcd_backlight,
  99 };
 100
 101 void __init colibri_pxa3xx_init_lcd(int bl_pin)
 102 {
 103         lcd_bl_pin = bl_pin;
 104         gpio_request(bl_pin, "lcd backlight");
 105         gpio_direction_output(bl_pin, 0);
 106         pxa_set_fb_info(NULL, &sharp_lq43_info);
 107 }
 108 #endif
 109
 110 #if IS_ENABLED(CONFIG_MTD_NAND_MARVELL)
 111 static struct mtd_partition colibri_nand_partitions[] = {
 112         {
 113                 .name        = "bootloader",
 114                 .offset      = 0,
 115                 .size        = SZ_512K,
 116                 .mask_flags  = MTD_WRITEABLE, /* force read-only */
 117         },
 118         {
 119                 .name        = "kernel",
 120                 .offset      = MTDPART_OFS_APPEND,
 121                 .size        = SZ_4M,
 122                 .mask_flags  = MTD_WRITEABLE, /* force read-only */
 123         },
 124         {
 125                 .name        = "reserved",
 126                 .offset      = MTDPART_OFS_APPEND,
 127                 .size        = SZ_1M,
 128                 .mask_flags  = MTD_WRITEABLE, /* force read-only */
 129         },
 130         {
 131                 .name        = "fs",
 132                 .offset      = MTDPART_OFS_APPEND,
 133                 .size        = MTDPART_SIZ_FULL,
 134         },
 135 };
 136
 137 static struct pxa3xx_nand_platform_data colibri_nand_info = {
 138         .keep_config    = 1,
 139         .parts          = colibri_nand_partitions,
 140         .nr_parts       = ARRAY_SIZE(colibri_nand_partitions),
 141 };
 142
 143 void __init colibri_pxa3xx_init_nand(void)
 144 {
 145         pxa3xx_set_nand_info(&colibri_nand_info);
 146 }
 147 #endif
 148