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https://github.com/AsahiLinux/u-boot
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11d80af487
Add DVI output support and make it the default video output. Currently the CLAA WVGA panel is supported, but this panel has to be purchased separately, so using the DVI output as the default would allow more people to try the splash screen feature on a mx51evk. If someone still wants to use the CLAA WVGA, just set the panel variable as: set panel claa Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
114 lines
3 KiB
C
114 lines
3 KiB
C
/*
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* Copyright (C) 2012 Freescale Semiconductor, Inc.
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* Fabio Estevam <fabio.estevam@freescale.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <linux/list.h>
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#include <asm/gpio.h>
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#include <asm/arch/iomux.h>
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#include <linux/fb.h>
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#include <ipu_pixfmt.h>
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#define MX51EVK_LCD_3V3 IMX_GPIO_NR(4, 9)
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#define MX51EVK_LCD_5V IMX_GPIO_NR(4, 10)
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#define MX51EVK_LCD_BACKLIGHT IMX_GPIO_NR(3, 4)
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static struct fb_videomode const claa_wvga = {
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.name = "CLAA07LC0ACW",
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.refresh = 57,
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.xres = 800,
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.yres = 480,
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.pixclock = 37037,
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.left_margin = 40,
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.right_margin = 60,
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.upper_margin = 10,
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.lower_margin = 10,
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.hsync_len = 20,
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.vsync_len = 10,
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.sync = 0,
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.vmode = FB_VMODE_NONINTERLACED
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};
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static struct fb_videomode const dvi = {
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.name = "DVI panel",
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.refresh = 60,
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.xres = 1024,
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.yres = 768,
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.pixclock = 15385,
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.left_margin = 220,
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.right_margin = 40,
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.upper_margin = 21,
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.lower_margin = 7,
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.hsync_len = 60,
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.vsync_len = 10,
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.sync = 0,
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.vmode = FB_VMODE_NONINTERLACED
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};
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void setup_iomux_lcd(void)
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{
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/* DI2_PIN15 */
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mxc_request_iomux(MX51_PIN_DI_GP4, IOMUX_CONFIG_ALT4);
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/* Pad settings for MX51_PIN_DI2_DISP_CLK */
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mxc_iomux_set_pad(MX51_PIN_DI2_DISP_CLK, PAD_CTL_HYS_NONE |
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PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER |
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PAD_CTL_DRV_MAX | PAD_CTL_SRE_SLOW);
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/* Turn on 3.3V voltage for LCD */
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mxc_request_iomux(MX51_PIN_CSI2_D12, IOMUX_CONFIG_ALT3);
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gpio_direction_output(MX51EVK_LCD_3V3, 1);
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/* Turn on 5V voltage for LCD */
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mxc_request_iomux(MX51_PIN_CSI2_D13, IOMUX_CONFIG_ALT3);
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gpio_direction_output(MX51EVK_LCD_5V, 1);
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/* Turn on GPIO backlight */
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mxc_request_iomux(MX51_PIN_DI1_D1_CS, IOMUX_CONFIG_ALT4);
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mxc_iomux_set_input(MX51_GPIO3_IPP_IND_G_IN_4_SELECT_INPUT,
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INPUT_CTL_PATH1);
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gpio_direction_output(MX51EVK_LCD_BACKLIGHT, 1);
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}
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int board_video_skip(void)
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{
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int ret;
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char const *e = getenv("panel");
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if (e) {
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if (strcmp(e, "claa") == 0) {
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ret = ipuv3_fb_init(&claa_wvga, 1, IPU_PIX_FMT_RGB565);
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if (ret)
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printf("claa cannot be configured: %d\n", ret);
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return ret;
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}
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}
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/*
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* 'panel' env variable not found or has different value than 'claa'
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* Defaulting to dvi output.
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*/
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ret = ipuv3_fb_init(&dvi, 0, IPU_PIX_FMT_RGB24);
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if (ret)
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printf("dvi cannot be configured: %d\n", ret);
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return ret;
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}
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