1 /* 2 * Copyright (C) 2012 Freescale Semiconductor, Inc. 3 * Fabio Estevam <fabio.estevam@freescale.com> 4 * 5 * See file CREDITS for list of people who contributed to this 6 * project. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of 11 * the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21 * MA 02111-1307 USA 22 */ 23 24 #include <common.h> 25 #include <linux/list.h> 26 #include <asm/gpio.h> 27 #include <asm/arch/iomux-mx51.h> 28 #include <linux/fb.h> 29 #include <ipu_pixfmt.h> 30 31 #define MX51EVK_LCD_3V3 IMX_GPIO_NR(4, 9) 32 #define MX51EVK_LCD_5V IMX_GPIO_NR(4, 10) 33 #define MX51EVK_LCD_BACKLIGHT IMX_GPIO_NR(3, 4) 34 35 static struct fb_videomode const claa_wvga = { 36 .name = "CLAA07LC0ACW", 37 .refresh = 57, 38 .xres = 800, 39 .yres = 480, 40 .pixclock = 37037, 41 .left_margin = 40, 42 .right_margin = 60, 43 .upper_margin = 10, 44 .lower_margin = 10, 45 .hsync_len = 20, 46 .vsync_len = 10, 47 .sync = 0, 48 .vmode = FB_VMODE_NONINTERLACED 49 }; 50 51 static struct fb_videomode const dvi = { 52 .name = "DVI panel", 53 .refresh = 60, 54 .xres = 1024, 55 .yres = 768, 56 .pixclock = 15385, 57 .left_margin = 220, 58 .right_margin = 40, 59 .upper_margin = 21, 60 .lower_margin = 7, 61 .hsync_len = 60, 62 .vsync_len = 10, 63 .sync = 0, 64 .vmode = FB_VMODE_NONINTERLACED 65 }; 66 67 void setup_iomux_lcd(void) 68 { 69 /* DI2_PIN15 */ 70 imx_iomux_v3_setup_pad(MX51_PAD_DI_GP4__DI2_PIN15); 71 72 /* Pad settings for DI2_DISP_CLK */ 73 imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_DI2_DISP_CLK__DI2_DISP_CLK, 74 PAD_CTL_PKE | PAD_CTL_DSE_MAX | PAD_CTL_SRE_SLOW)); 75 76 /* Turn on 3.3V voltage for LCD */ 77 imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_CSI2_D12__GPIO4_9, 78 NO_PAD_CTRL)); 79 gpio_direction_output(MX51EVK_LCD_3V3, 1); 80 81 /* Turn on 5V voltage for LCD */ 82 imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_CSI2_D13__GPIO4_10, 83 NO_PAD_CTRL)); 84 gpio_direction_output(MX51EVK_LCD_5V, 1); 85 86 /* Turn on GPIO backlight */ 87 imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_DI1_D1_CS__GPIO3_4, 88 NO_PAD_CTRL)); 89 gpio_direction_output(MX51EVK_LCD_BACKLIGHT, 1); 90 } 91 92 int board_video_skip(void) 93 { 94 int ret; 95 char const *e = getenv("panel"); 96 97 if (e) { 98 if (strcmp(e, "claa") == 0) { 99 ret = ipuv3_fb_init(&claa_wvga, 1, IPU_PIX_FMT_RGB565); 100 if (ret) 101 printf("claa cannot be configured: %d\n", ret); 102 return ret; 103 } 104 } 105 106 /* 107 * 'panel' env variable not found or has different value than 'claa' 108 * Defaulting to dvi output. 109 */ 110 ret = ipuv3_fb_init(&dvi, 0, IPU_PIX_FMT_RGB24); 111 if (ret) 112 printf("dvi cannot be configured: %d\n", ret); 113 return ret; 114 } 115