Hi,
On 08/09/2025 15:45, Dmitry Baryshkov wrote:
On Mon, Sep 08, 2025 at 03:35:23PM +0200, Maud Spierings wrote:
Hello Neil,
Add support for the transparent Realtek RTD2171 DP-to-HDMI bridge.
Reviewed-by: Dmitry Baryshkov <dmitry.barysh...@oss.qualcomm.com>
Signed-off-by: Neil Armstrong <neil.armstr...@linaro.org>
---
drivers/gpu/drm/bridge/simple-bridge.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/bridge/simple-bridge.c
b/drivers/gpu/drm/bridge/simple-bridge.c
index
1f16d568bcc4e0fb56c763244389e6fecbcb2231..e4d0bc2200f8632bcc883102c89c270a17c68d0c
100644
--- a/drivers/gpu/drm/bridge/simple-bridge.c
+++ b/drivers/gpu/drm/bridge/simple-bridge.c
@@ -266,6 +266,11 @@ static const struct of_device_id simple_bridge_match[] = {
.data = &(const struct simple_bridge_info) {
.connector_type = DRM_MODE_CONNECTOR_HDMIA,
},
+ }, {
+ .compatible = "realtek,rtd2171",
+ .data = &(const struct simple_bridge_info) {
+ .connector_type = DRM_MODE_CONNECTOR_HDMIA,
+ },
}, {
.compatible = "ti,opa362",
.data = &(const struct simple_bridge_info) {
--
2.34.1
I would like to ask again if it may not be a better idea to introduce a
fallback compatible, once this patchseries lands I will be adding the
I'd say, that's not a good idea. We usually don't have fully datasheets
for those bridges, so we can't be sure that there are no strapping pins
/ other GPIO controls.
parade,ps185hdm. I don't know how many other variants there are that are
just simple dp->hdmi bridges that don't require anything other than the
connector type set to HDMIA. The Thinkbook 16 and zenbook a14 both have HDMI
connectors, likely with simple bridges too.
Sorry for the late reply, yes I have the same position, they are simple bridge
until we found out it's not the case...
Neil
Kind regards,
Maud
