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Diffstat (limited to 'src/soc/rockchip/rk3399/display.c')
-rw-r--r--src/soc/rockchip/rk3399/display.c27
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");
}