- debug("%s: stage %d\n", __func__, stage);
-
- /* do the things for this stage */
- switch (stage) {
- case STAGE_START:
- /* Initialize the Tegra display controller */
- if (tegra_display_probe(gd->fdt_blob, (void *)gd->fb_base)) {
- printf("%s: Failed to probe display driver\n",
- __func__);
- return -1;
- }
-
- /* get panel details */
- if (fdt_decode_lcd(blob, &config)) {
- printf("No valid LCD information in device tree\n");
- return -1;
- }
-
- /*
- * It is possible that the FDT has requested that the LCD be
- * disabled. We currently don't support this. It would require
- * changes to U-Boot LCD subsystem to have LCD support
- * compiled in but not used. An easier option might be to
- * still have a frame buffer, but leave the backlight off and
- * remove all mention of lcd in the stdout environment
- * variable.
- */
-
- funcmux_select(PERIPH_ID_DISP1, FUNCMUX_DEFAULT);
-
- fdtdec_setup_gpio(&config.panel_vdd);
- fdtdec_setup_gpio(&config.lvds_shutdown);
- fdtdec_setup_gpio(&config.backlight_vdd);
- fdtdec_setup_gpio(&config.backlight_en);
-
- /*
- * TODO: If fdt includes output flag we can omit this code
- * since fdtdec_setup_gpio will do it for us.
- */
- if (fdt_gpio_isvalid(&config.panel_vdd))
- gpio_direction_output(config.panel_vdd.gpio, 0);
- if (fdt_gpio_isvalid(&config.lvds_shutdown))
- gpio_direction_output(config.lvds_shutdown.gpio, 0);
- if (fdt_gpio_isvalid(&config.backlight_vdd))
- gpio_direction_output(config.backlight_vdd.gpio, 0);
- if (fdt_gpio_isvalid(&config.backlight_en))
- gpio_direction_output(config.backlight_en.gpio, 0);
- break;
- case STAGE_PANEL_VDD:
- if (fdt_gpio_isvalid(&config.panel_vdd))
- gpio_direction_output(config.panel_vdd.gpio, 1);
- break;
- case STAGE_LVDS:
- if (fdt_gpio_isvalid(&config.lvds_shutdown))
- gpio_set_value(config.lvds_shutdown.gpio, 1);
- break;
- case STAGE_BACKLIGHT_VDD:
- if (fdt_gpio_isvalid(&config.backlight_vdd))
- gpio_set_value(config.backlight_vdd.gpio, 1);
- break;
- case STAGE_PWM:
- /* Enable PWM at 15/16 high, 32768 Hz with divider 1 */
- pinmux_set_func(PMUX_PINGRP_GPU, PMUX_FUNC_PWM);
- pinmux_tristate_disable(PMUX_PINGRP_GPU);