#include <micrel.h>
#include <miiphy.h>
#include <netdev.h>
+#include <linux/fb.h>
+#include <ipu_pixfmt.h>
+#include <asm/arch/crm_regs.h>
+#include <asm/arch/mxc_hdmi.h>
+#include <i2c.h>
+
DECLARE_GLOBAL_DATA_PTR;
#define UART_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \
}
#endif
+#if defined(CONFIG_VIDEO_IPUV3)
+
+static iomux_v3_cfg_t const backlight_pads[] = {
+ /* Backlight on RGB connector: J15 */
+ MX6Q_PAD_SD1_DAT3__GPIO_1_21 | MUX_PAD_CTRL(NO_PAD_CTRL),
+#define RGB_BACKLIGHT_GP IMX_GPIO_NR(1, 21)
+
+ /* Backlight on LVDS connector: J6 */
+ MX6Q_PAD_SD1_CMD__GPIO_1_18 | MUX_PAD_CTRL(NO_PAD_CTRL),
+#define LVDS_BACKLIGHT_GP IMX_GPIO_NR(1, 18)
+};
+
+static iomux_v3_cfg_t const rgb_pads[] = {
+ MX6Q_PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK,
+ MX6Q_PAD_DI0_PIN15__IPU1_DI0_PIN15,
+ MX6Q_PAD_DI0_PIN2__IPU1_DI0_PIN2,
+ MX6Q_PAD_DI0_PIN3__IPU1_DI0_PIN3,
+ MX6Q_PAD_DI0_PIN4__GPIO_4_20,
+ MX6Q_PAD_DISP0_DAT0__IPU1_DISP0_DAT_0,
+ MX6Q_PAD_DISP0_DAT1__IPU1_DISP0_DAT_1,
+ MX6Q_PAD_DISP0_DAT2__IPU1_DISP0_DAT_2,
+ MX6Q_PAD_DISP0_DAT3__IPU1_DISP0_DAT_3,
+ MX6Q_PAD_DISP0_DAT4__IPU1_DISP0_DAT_4,
+ MX6Q_PAD_DISP0_DAT5__IPU1_DISP0_DAT_5,
+ MX6Q_PAD_DISP0_DAT6__IPU1_DISP0_DAT_6,
+ MX6Q_PAD_DISP0_DAT7__IPU1_DISP0_DAT_7,
+ MX6Q_PAD_DISP0_DAT8__IPU1_DISP0_DAT_8,
+ MX6Q_PAD_DISP0_DAT9__IPU1_DISP0_DAT_9,
+ MX6Q_PAD_DISP0_DAT10__IPU1_DISP0_DAT_10,
+ MX6Q_PAD_DISP0_DAT11__IPU1_DISP0_DAT_11,
+ MX6Q_PAD_DISP0_DAT12__IPU1_DISP0_DAT_12,
+ MX6Q_PAD_DISP0_DAT13__IPU1_DISP0_DAT_13,
+ MX6Q_PAD_DISP0_DAT14__IPU1_DISP0_DAT_14,
+ MX6Q_PAD_DISP0_DAT15__IPU1_DISP0_DAT_15,
+ MX6Q_PAD_DISP0_DAT16__IPU1_DISP0_DAT_16,
+ MX6Q_PAD_DISP0_DAT17__IPU1_DISP0_DAT_17,
+ MX6Q_PAD_DISP0_DAT18__IPU1_DISP0_DAT_18,
+ MX6Q_PAD_DISP0_DAT19__IPU1_DISP0_DAT_19,
+ MX6Q_PAD_DISP0_DAT20__IPU1_DISP0_DAT_20,
+ MX6Q_PAD_DISP0_DAT21__IPU1_DISP0_DAT_21,
+ MX6Q_PAD_DISP0_DAT22__IPU1_DISP0_DAT_22,
+ MX6Q_PAD_DISP0_DAT23__IPU1_DISP0_DAT_23,
+};
+
+struct display_info_t {
+ int bus;
+ int addr;
+ int pixfmt;
+ int (*detect)(struct display_info_t const *dev);
+ void (*enable)(struct display_info_t const *dev);
+ struct fb_videomode mode;
+};
+
+
+static int detect_hdmi(struct display_info_t const *dev)
+{
+ return __raw_readb(HDMI_ARB_BASE_ADDR+HDMI_PHY_STAT0) & HDMI_PHY_HPD;
+}
+
+static void enable_hdmi(struct display_info_t const *dev)
+{
+ u8 reg;
+ printf("%s: setup HDMI monitor\n", __func__);
+ reg = __raw_readb(
+ HDMI_ARB_BASE_ADDR
+ +HDMI_PHY_CONF0);
+ reg |= HDMI_PHY_CONF0_PDZ_MASK;
+ __raw_writeb(reg,
+ HDMI_ARB_BASE_ADDR
+ +HDMI_PHY_CONF0);
+ udelay(3000);
+ reg |= HDMI_PHY_CONF0_ENTMDS_MASK;
+ __raw_writeb(reg,
+ HDMI_ARB_BASE_ADDR
+ +HDMI_PHY_CONF0);
+ udelay(3000);
+ reg |= HDMI_PHY_CONF0_GEN2_TXPWRON_MASK;
+ __raw_writeb(reg,
+ HDMI_ARB_BASE_ADDR
+ +HDMI_PHY_CONF0);
+ __raw_writeb(HDMI_MC_PHYRSTZ_ASSERT,
+ HDMI_ARB_BASE_ADDR+HDMI_MC_PHYRSTZ);
+}
+
+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;
+ u32 reg = readl(&iomux->gpr[2]);
+ reg |= IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT;
+ writel(reg, &iomux->gpr[2]);
+ gpio_direction_output(LVDS_BACKLIGHT_GP, 1);
+}
+
+static void enable_rgb(struct display_info_t const *dev)
+{
+ imx_iomux_v3_setup_multiple_pads(
+ rgb_pads,
+ ARRAY_SIZE(rgb_pads));
+ gpio_direction_output(RGB_BACKLIGHT_GP, 1);
+}
+
+static struct display_info_t const displays[] = {{
+ .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
+} }, {
+ .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
+} }, {
+ .bus = 2,
+ .addr = 0x38,
+ .pixfmt = IPU_PIX_FMT_LVDS666,
+ .detect = detect_i2c,
+ .enable = enable_lvds,
+ .mode = {
+ .name = "wsvga-lvds",
+ .refresh = 60,
+ .xres = 1024,
+ .yres = 600,
+ .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
+} }, {
+ .bus = 2,
+ .addr = 0x48,
+ .pixfmt = IPU_PIX_FMT_RGB666,
+ .detect = detect_i2c,
+ .enable = enable_rgb,
+ .mode = {
+ .name = "wvga-rgb",
+ .refresh = 57,
+ .xres = 800,
+ .yres = 480,
+ .pixclock = 37037,
+ .left_margin = 40,
+ .right_margin = 60,
+ .upper_margin = 10,
+ .lower_margin = 10,
+ .hsync_len = 20,
+ .vsync_len = 10,
+ .sync = 0,
+ .vmode = FB_VMODE_NONINTERLACED
+} } };
+
+int board_video_skip(void)
+{
+ int i;
+ int ret;
+ char const *panel = getenv("panel");
+ if (!panel) {
+ for (i = 0; i < ARRAY_SIZE(displays); i++) {
+ struct display_info_t const *dev = displays+i;
+ if (dev->detect(dev)) {
+ panel = dev->mode.name;
+ printf("auto-detected panel %s\n", panel);
+ break;
+ }
+ }
+ if (!panel) {
+ panel = displays[0].mode.name;
+ printf("No panel detected: default to %s\n", panel);
+ }
+ } else {
+ for (i = 0; i < ARRAY_SIZE(displays); i++) {
+ if (!strcmp(panel, displays[i].mode.name))
+ break;
+ }
+ }
+ if (i < ARRAY_SIZE(displays)) {
+ ret = ipuv3_fb_init(&displays[i].mode, 0,
+ displays[i].pixfmt);
+ if (!ret) {
+ displays[i].enable(displays+i);
+ printf("Display: %s (%ux%u)\n",
+ displays[i].mode.name,
+ displays[i].mode.xres,
+ displays[i].mode.yres);
+ } else
+ printf("LCD %s cannot be configured: %d\n",
+ displays[i].mode.name, ret);
+ } else {
+ printf("unsupported panel %s\n", panel);
+ ret = -EINVAL;
+ }
+ return (0 != ret);
+}
+
+static void setup_display(void)
+{
+ struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+ struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
+ struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
+
+ int reg;
+
+ /* Turn on LDB0,IPU,IPU DI0 clocks */
+ reg = __raw_readl(&mxc_ccm->CCGR3);
+ reg |= MXC_CCM_CCGR3_IPU1_IPU_DI0_OFFSET
+ |MXC_CCM_CCGR3_LDB_DI0_MASK;
+ writel(reg, &mxc_ccm->CCGR3);
+
+ /* Turn on HDMI PHY clock */
+ reg = __raw_readl(&mxc_ccm->CCGR2);
+ reg |= MXC_CCM_CCGR2_HDMI_TX_IAHBCLK_MASK
+ |MXC_CCM_CCGR2_HDMI_TX_ISFRCLK_MASK;
+ writel(reg, &mxc_ccm->CCGR2);
+
+ /* clear HDMI PHY reset */
+ __raw_writeb(HDMI_MC_PHYRSTZ_DEASSERT,
+ HDMI_ARB_BASE_ADDR+HDMI_MC_PHYRSTZ);
+
+ /* set PFD1_FRAC to 0x13 == 455 MHz (480*18)/0x13 */
+ writel(ANATOP_PFD_480_PFD1_FRAC_MASK, &anatop->pfd_480_clr);
+ writel(0x13<<ANATOP_PFD_480_PFD1_FRAC_SHIFT, &anatop->pfd_480_set);
+
+ /* 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 &= ~(MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_MASK
+ |MXC_CCM_CHSCCDR_IPU1_DI0_PODF_MASK
+ |MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_MASK);
+ reg |= (CHSCCDR_CLK_SEL_LDB_DI0
+ <<MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET)
+ |(CHSCCDR_PODF_DIVIDE_BY_3
+ <<MXC_CCM_CHSCCDR_IPU1_DI0_PODF_OFFSET)
+ |(CHSCCDR_IPU_PRE_CLK_540M_PFD
+ <<MXC_CCM_CHSCCDR_IPU1_DI0_PRE_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]);
+
+ /* backlights off until needed */
+ imx_iomux_v3_setup_multiple_pads(backlight_pads,
+ ARRAY_SIZE(backlight_pads));
+ gpio_direction_input(LVDS_BACKLIGHT_GP);
+ gpio_direction_input(RGB_BACKLIGHT_GP);
+}
+#endif
+
int board_early_init_f(void)
{
setup_iomux_uart();
setup_buttons();
+#if defined(CONFIG_VIDEO_IPUV3)
+ setup_display();
+#endif
return 0;
}
+/*
+ * Do not overwrite the console
+ * Use always serial for U-Boot console
+ */
+int overwrite_console(void)
+{
+ return 1;
+}
+
int board_init(void)
{
/* address of boot parameters */
projects / u-boot / commitdiff