diff options
| -rw-r--r-- | src/soc/rockchip/rk3399/display.c | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/src/soc/rockchip/rk3399/display.c b/src/soc/rockchip/rk3399/display.c index 671e518fc3..4261b26399 100644 --- a/src/soc/rockchip/rk3399/display.c +++ b/src/soc/rockchip/rk3399/display.c @@ -41,6 +41,7 @@ void rk_display_init(device_t dev) struct edid edid; struct soc_rockchip_rk3399_config *conf = dev->chip_info; enum vop_modes detected_mode = VOP_MODE_UNKNOWN; + int retry_count = 0; /* let's use vop0 in rk3399 */ uint32_t vop_id = 0; @@ -63,15 +64,14 @@ void rk_display_init(device_t dev) */ write32(&rk3399_grf->soc_con25, RK_SETBITS(1 << 11)); +retry_edp: rk_edp_init(); - if (rk_edp_get_edid(&edid) == 0) { detected_mode = VOP_MODE_EDP; break; } - printk(BIOS_WARNING, "Cannot get EDID from EDP.\n"); - if (conf->vop_mode == VOP_MODE_EDP) - return; + goto edp_error; + /* fall thru */ case VOP_MODE_HDMI: printk(BIOS_WARNING, "HDMI display is NOT supported yet.\n"); @@ -100,13 +100,24 @@ void rk_display_init(device_t dev) case VOP_MODE_EDP: default: /* will enable edp in depthcharge */ - if (rk_edp_prepare()) { - printk(BIOS_WARNING, "edp prepare error\n"); - return; - } + if (rk_edp_prepare()) + goto edp_error; mainboard_power_on_backlight(); break; } set_vbe_mode_info_valid(&edid, (uintptr_t)0); + return; + +edp_error: + if (retry_count++ < 3) { + /* rst edp */ + write32(&cru_ptr->softrst_con[17], + RK_SETBITS(1 << 12 | 1 << 13)); + udelay(1); + write32(&cru_ptr->softrst_con[17], + RK_CLRBITS(1 << 12 | 1 << 13)); + goto retry_edp; + } + printk(BIOS_WARNING, "epd initial error\n"); } |