[U-Boot] [PATCH] imx: ventana: add HDMI and LVDS display capability
Tim Harvey
tharvey at gateworks.com
Sat Apr 26 00:39:07 CEST 2014
Signed-off-by: Tim Harvey <tharvey at gateworks.com>
---
board/gateworks/gw_ventana/gw_ventana.c | 134 ++++++++++++++++++++++++++++++++
include/configs/gw_ventana.h | 16 ++++
2 files changed, 150 insertions(+)
diff --git a/board/gateworks/gw_ventana/gw_ventana.c b/board/gateworks/gw_ventana/gw_ventana.c
index 79b3e01..f5b9f90 100644
--- a/board/gateworks/gw_ventana/gw_ventana.c
+++ b/board/gateworks/gw_ventana/gw_ventana.c
@@ -12,6 +12,7 @@
#include <asm/arch/imx-regs.h>
#include <asm/arch/iomux.h>
#include <asm/arch/mx6-pins.h>
+#include <asm/arch/mxc_hdmi.h>
#include <asm/arch/crm_regs.h>
#include <asm/arch/sys_proto.h>
#include <asm/gpio.h>
@@ -19,6 +20,7 @@
#include <asm/imx-common/mxc_i2c.h>
#include <asm/imx-common/boot_mode.h>
#include <asm/imx-common/sata.h>
+#include <asm/imx-common/video.h>
#include <jffs2/load_kernel.h>
#include <hwconfig.h>
#include <i2c.h>
@@ -369,6 +371,135 @@ int board_eth_init(bd_t *bis)
return 0;
}
+#if defined(CONFIG_VIDEO_IPUV3)
+
+static void enable_hdmi(struct display_info_t const *dev)
+{
+ imx_enable_hdmi_phy();
+}
+
+static int detect_i2c(struct display_info_t const *dev)
+{
+ return ((0 == i2c_set_bus_num(dev->bus))
+ &&
+ (0 == i2c_probe(dev->addr)));
+}
+
+static void enable_lvds(struct display_info_t const *dev)
+{
+ struct iomuxc *iomux = (struct iomuxc *)
+ IOMUXC_BASE_ADDR;
+
+ /* set CH0 data width to 24bit (IOMUXC_GPR2:5 0=18bit, 1=24bit) */
+ u32 reg = readl(&iomux->gpr[2]);
+ reg |= IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT;
+ writel(reg, &iomux->gpr[2]);
+
+ /* Enable Backlight */
+ imx_iomux_v3_setup_pad(MX6_PAD_SD1_CMD__GPIO1_IO18 |
+ MUX_PAD_CTRL(NO_PAD_CTRL));
+ gpio_direction_output(IMX_GPIO_NR(1, 18), 1);
+}
+
+struct display_info_t const displays[] = {{
+ /* HDMI Output */
+ .bus = -1,
+ .addr = 0,
+ .pixfmt = IPU_PIX_FMT_RGB24,
+ .detect = detect_hdmi,
+ .enable = enable_hdmi,
+ .mode = {
+ .name = "HDMI",
+ .refresh = 60,
+ .xres = 1024,
+ .yres = 768,
+ .pixclock = 15385,
+ .left_margin = 220,
+ .right_margin = 40,
+ .upper_margin = 21,
+ .lower_margin = 7,
+ .hsync_len = 60,
+ .vsync_len = 10,
+ .sync = FB_SYNC_EXT,
+ .vmode = FB_VMODE_NONINTERLACED
+} }, {
+ /* Freescale MXC-LVDS1: HannStar HSD100PXN1-A00 w/ egalx_ts cont */
+ .bus = 2,
+ .addr = 0x4,
+ .pixfmt = IPU_PIX_FMT_LVDS666,
+ .detect = detect_i2c,
+ .enable = enable_lvds,
+ .mode = {
+ .name = "Hannstar-XGA",
+ .refresh = 60,
+ .xres = 1024,
+ .yres = 768,
+ .pixclock = 15385,
+ .left_margin = 220,
+ .right_margin = 40,
+ .upper_margin = 21,
+ .lower_margin = 7,
+ .hsync_len = 60,
+ .vsync_len = 10,
+ .sync = FB_SYNC_EXT,
+ .vmode = FB_VMODE_NONINTERLACED
+} } };
+size_t display_count = ARRAY_SIZE(displays);
+
+static void setup_display(void)
+{
+ struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+ struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
+ int reg;
+
+ enable_ipu_clock();
+ imx_setup_hdmi();
+ /* Turn on LDB0,IPU,IPU DI0 clocks */
+ reg = __raw_readl(&mxc_ccm->CCGR3);
+ reg |= MXC_CCM_CCGR3_LDB_DI0_MASK;
+ writel(reg, &mxc_ccm->CCGR3);
+
+ /* set LDB0, LDB1 clk select to 011/011 */
+ reg = readl(&mxc_ccm->cs2cdr);
+ reg &= ~(MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK
+ |MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK);
+ reg |= (3<<MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET)
+ |(3<<MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_OFFSET);
+ writel(reg, &mxc_ccm->cs2cdr);
+
+ reg = readl(&mxc_ccm->cscmr2);
+ reg |= MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV;
+ writel(reg, &mxc_ccm->cscmr2);
+
+ reg = readl(&mxc_ccm->chsccdr);
+ reg |= (CHSCCDR_CLK_SEL_LDB_DI0
+ <<MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
+ writel(reg, &mxc_ccm->chsccdr);
+
+ reg = IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES
+ |IOMUXC_GPR2_DI1_VS_POLARITY_ACTIVE_HIGH
+ |IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_LOW
+ |IOMUXC_GPR2_BIT_MAPPING_CH1_SPWG
+ |IOMUXC_GPR2_DATA_WIDTH_CH1_18BIT
+ |IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG
+ |IOMUXC_GPR2_DATA_WIDTH_CH0_18BIT
+ |IOMUXC_GPR2_LVDS_CH1_MODE_DISABLED
+ |IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0;
+ writel(reg, &iomux->gpr[2]);
+
+ reg = readl(&iomux->gpr[3]);
+ reg = (reg & ~IOMUXC_GPR3_LVDS0_MUX_CTL_MASK)
+ | (IOMUXC_GPR3_MUX_SRC_IPU1_DI0
+ <<IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET);
+ writel(reg, &iomux->gpr[3]);
+
+ /* Backlight CABEN on LVDS connector */
+ imx_iomux_v3_setup_pad(MX6_PAD_SD2_CLK__GPIO1_IO10 |
+ MUX_PAD_CTRL(NO_PAD_CTRL));
+ gpio_direction_output(IMX_GPIO_NR(1, 10), 0);
+}
+#endif /* CONFIG_VIDEO_IPUV3 */
+
/* read ventana EEPROM, check for validity, and return baseboard type */
static int
read_eeprom(void)
@@ -942,6 +1073,9 @@ int board_early_init_f(void)
setup_iomux_uart();
gpio_direction_output(GP_USB_OTG_PWR, 0); /* OTG power off */
+#if defined(CONFIG_VIDEO_IPUV3)
+ setup_display();
+#endif
return 0;
}
diff --git a/include/configs/gw_ventana.h b/include/configs/gw_ventana.h
index 335f2ff..cd55495 100644
--- a/include/configs/gw_ventana.h
+++ b/include/configs/gw_ventana.h
@@ -194,6 +194,22 @@
#define CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP
#define CONFIG_USB_HUB_MIN_POWER_ON_DELAY 1200
+/* Framebuffer and LCD */
+#define CONFIG_VIDEO
+#define CONFIG_VIDEO_IPUV3
+#define CONFIG_CFB_CONSOLE
+#define CONFIG_VGA_AS_SINGLE_DEVICE
+#define CONFIG_SYS_CONSOLE_IS_IN_ENV
+#define CONFIG_VIDEO_BMP_RLE8
+#define CONFIG_SPLASH_SCREEN
+#define CONFIG_BMP_16BPP
+#define CONFIG_VIDEO_LOGO
+#define CONFIG_IPUV3_CLK 260000000
+#define CONFIG_CMD_HDMIDETECT
+#define CONFIG_CONSOLE_MUX
+#define CONFIG_IMX_HDMI
+#define CONFIG_IMX_VIDEO_SKIP
+
/* serial console (ttymxc1,115200) */
#define CONFIG_CONS_INDEX 1
#define CONFIG_BAUDRATE 115200
--
1.8.3.2
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