mx53ppd_video.c
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/*
* Copyright 2017 General Electric Company
*
* Based on board/freescale/mx53loco/mx53loco_video.c:
*
* Copyright (C) 2012 Freescale Semiconductor, Inc.
* Fabio Estevam <fabio.estevam@freescale.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <linux/list.h>
#include <asm/gpio.h>
#include <asm/arch/iomux-mx53.h>
#include <linux/fb.h>
#include <ipu_pixfmt.h>
#include <asm/arch/crm_regs.h>
#include <asm/arch/imx-regs.h>
#include <asm/io.h>
#include <pwm.h>
#include "ppd_gpio.h"
#define MX53PPD_LCD_POWER IMX_GPIO_NR(3, 24)
static struct fb_videomode const nv_spwg = {
.name = "NV-SPWGRGB888",
.refresh = 60,
.xres = 800,
.yres = 480,
.pixclock = 15384,
.left_margin = 16,
.right_margin = 210,
.upper_margin = 10,
.lower_margin = 22,
.hsync_len = 30,
.vsync_len = 13,
.sync = FB_SYNC_EXT,
.vmode = FB_VMODE_NONINTERLACED
};
void setup_iomux_lcd(void)
{
static const iomux_v3_cfg_t lcd_pads[] = {
MX53_PAD_DI0_DISP_CLK__IPU_DI0_DISP_CLK,
MX53_PAD_DI0_PIN15__IPU_DI0_PIN15,
MX53_PAD_DI0_PIN2__IPU_DI0_PIN2,
MX53_PAD_DI0_PIN3__IPU_DI0_PIN3,
MX53_PAD_DISP0_DAT0__IPU_DISP0_DAT_0,
MX53_PAD_DISP0_DAT1__IPU_DISP0_DAT_1,
MX53_PAD_DISP0_DAT2__IPU_DISP0_DAT_2,
MX53_PAD_DISP0_DAT3__IPU_DISP0_DAT_3,
MX53_PAD_DISP0_DAT4__IPU_DISP0_DAT_4,
MX53_PAD_DISP0_DAT5__IPU_DISP0_DAT_5,
MX53_PAD_DISP0_DAT6__IPU_DISP0_DAT_6,
MX53_PAD_DISP0_DAT7__IPU_DISP0_DAT_7,
MX53_PAD_DISP0_DAT8__IPU_DISP0_DAT_8,
MX53_PAD_DISP0_DAT9__IPU_DISP0_DAT_9,
MX53_PAD_DISP0_DAT10__IPU_DISP0_DAT_10,
MX53_PAD_DISP0_DAT11__IPU_DISP0_DAT_11,
MX53_PAD_DISP0_DAT12__IPU_DISP0_DAT_12,
MX53_PAD_DISP0_DAT13__IPU_DISP0_DAT_13,
MX53_PAD_DISP0_DAT14__IPU_DISP0_DAT_14,
MX53_PAD_DISP0_DAT15__IPU_DISP0_DAT_15,
MX53_PAD_DISP0_DAT16__IPU_DISP0_DAT_16,
MX53_PAD_DISP0_DAT17__IPU_DISP0_DAT_17,
MX53_PAD_DISP0_DAT18__IPU_DISP0_DAT_18,
MX53_PAD_DISP0_DAT19__IPU_DISP0_DAT_19,
MX53_PAD_DISP0_DAT20__IPU_DISP0_DAT_20,
MX53_PAD_DISP0_DAT21__IPU_DISP0_DAT_21,
MX53_PAD_DISP0_DAT22__IPU_DISP0_DAT_22,
MX53_PAD_DISP0_DAT23__IPU_DISP0_DAT_23,
};
imx_iomux_v3_setup_multiple_pads(lcd_pads, ARRAY_SIZE(lcd_pads));
}
static void lcd_enable(void)
{
struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
/* Set LDB_DI0 as clock source for IPU_DI0 */
clrsetbits_le32(&mxc_ccm->cscmr2,
MXC_CCM_CSCMR2_DI0_CLK_SEL_MASK,
MXC_CCM_CSCMR2_DI0_CLK_SEL(
MXC_CCM_CSCMR2_DI0_CLK_SEL_LDB_DI0_CLK));
/* Turn on IPU LDB DI0 clocks */
setbits_le32(&mxc_ccm->CCGR6, MXC_CCM_CCGR6_LDB_DI0(3));
/* Turn on IPU DI0 clocks */
setbits_le32(&mxc_ccm->CCGR6, MXC_CCM_CCGR6_IPU_DI0(3));
/* Configure LDB */
writel(IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG |
IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT |
IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0,
&iomux->gpr[2]);
/* Enable backlights */
pwm_init(1, 0, 0);
/* duty cycle 5000000ns, period: 5000000ns */
pwm_config(1, 5000000, 5000000);
/* Backlight Power */
gpio_direction_output(BACKLIGHT_ENABLE, 1);
pwm_enable(1);
}
static int do_lcd_enable(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
lcd_enable();
return 0;
}
U_BOOT_CMD(
ppd_lcd_enable, 1, 1, do_lcd_enable,
"enable PPD LCD",
"no parameters"
);
int board_video_skip(void)
{
int ret;
ret = ipuv3_fb_init(&nv_spwg, 0, IPU_PIX_FMT_RGB24);
if (ret)
printf("Display cannot be configured: %d\n", ret);
return ret;
}