LXR uboot/board/freescale/mx51evk/mx51evk

   1/*
   2 * Copyright (C) 2012 Freescale Semiconductor, Inc.
   3 * Fabio Estevam <fabio.estevam@freescale.com>
   4 *
   5 * SPDX-License-Identifier:     GPL-2.0+
   6 */
   7
   8#include <common.h>
   9#include <linux/list.h>
  10#include <asm/gpio.h>
  11#include <asm/arch/iomux-mx51.h>
  12#include <linux/fb.h>
  13#include <ipu_pixfmt.h>
  14
  15#define MX51EVK_LCD_3V3         IMX_GPIO_NR(4, 9)
  16#define MX51EVK_LCD_5V          IMX_GPIO_NR(4, 10)
  17#define MX51EVK_LCD_BACKLIGHT   IMX_GPIO_NR(3, 4)
  18
  19static struct fb_videomode const claa_wvga = {
  20        .name           = "CLAA07LC0ACW",
  21        .refresh        = 57,
  22        .xres           = 800,
  23        .yres           = 480,
  24        .pixclock       = 37037,
  25        .left_margin    = 40,
  26        .right_margin   = 60,
  27        .upper_margin   = 10,
  28        .lower_margin   = 10,
  29        .hsync_len      = 20,
  30        .vsync_len      = 10,
  31        .sync           = 0,
  32        .vmode          = FB_VMODE_NONINTERLACED
  33};
  34
  35static struct fb_videomode const dvi = {
  36        .name           = "DVI panel",
  37        .refresh        = 60,
  38        .xres           = 1024,
  39        .yres           = 768,
  40        .pixclock       = 15385,
  41        .left_margin    = 220,
  42        .right_margin   = 40,
  43        .upper_margin   = 21,
  44        .lower_margin   = 7,
  45        .hsync_len      = 60,
  46        .vsync_len      = 10,
  47        .sync           = 0,
  48        .vmode          = FB_VMODE_NONINTERLACED
  49};
  50
  51void setup_iomux_lcd(void)
  52{
  53        /* DI2_PIN15 */
  54        imx_iomux_v3_setup_pad(MX51_PAD_DI_GP4__DI2_PIN15);
  55
  56        /* Pad settings for DI2_DISP_CLK */
  57        imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_DI2_DISP_CLK__DI2_DISP_CLK,
  58                            PAD_CTL_PKE | PAD_CTL_DSE_MAX | PAD_CTL_SRE_SLOW));
  59
  60        /* Turn on 3.3V voltage for LCD */
  61        imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_CSI2_D12__GPIO4_9,
  62                                                NO_PAD_CTRL));
  63        gpio_direction_output(MX51EVK_LCD_3V3, 1);
  64
  65        /* Turn on 5V voltage for LCD */
  66        imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_CSI2_D13__GPIO4_10,
  67                                                NO_PAD_CTRL));
  68        gpio_direction_output(MX51EVK_LCD_5V, 1);
  69
  70        /* Turn on GPIO backlight */
  71        imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_DI1_D1_CS__GPIO3_4,
  72                                                NO_PAD_CTRL));
  73        gpio_direction_output(MX51EVK_LCD_BACKLIGHT, 1);
  74}
  75
  76int board_video_skip(void)
  77{
  78        int ret;
  79        char const *e = getenv("panel");
  80
  81        if (e) {
  82                if (strcmp(e, "claa") == 0) {
  83                        ret = ipuv3_fb_init(&claa_wvga, 1, IPU_PIX_FMT_RGB565);
  84                        if (ret)
  85                                printf("claa cannot be configured: %d\n", ret);
  86                        return ret;
  87                }
  88        }
  89
  90        /*
  91         * 'panel' env variable not found or has different value than 'claa'
  92         *  Defaulting to dvi output.
  93         */
  94        ret = ipuv3_fb_init(&dvi, 0, IPU_PIX_FMT_RGB24);
  95        if (ret)
  96                printf("dvi cannot be configured: %d\n", ret);
  97        return ret;
  98}
  99