1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c b/drivers/gpu/drm/radeon/radeon_encoders.c
index f55b64cb59d1..012f80251e50 100644
--- a/drivers/gpu/drm/radeon/radeon_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_encoders.c
@@ -1431,7 +1431,11 @@ radeon_atom_encoder_dpms(struct drm_encoder *encoder, int mode)
         if (is_dig) {
                 switch (mode) {
                 case DRM_MODE_DPMS_ON:
-                        atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_ENABLE_OUTPUT, 0, 0);
+                        /* some early dce3.2 boards have a bug in their transmitter control table */
+                        if ((rdev->family == CHIP_RV710) || (rdev->family == CHIP_RV730))
+                                atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_ENABLE, 0, 0);
+                        else
+                                atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_ENABLE_OUTPUT, 0, 0);
                         if (atombios_get_encoder_mode(encoder) == ATOM_ENCODER_MODE_DP) {
                                 struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);