On 2/19/2025 9:08 AM, Dmitry Baryshkov wrote:
On Wed, Feb 19, 2025 at 06:02:20PM +0100, Krzysztof Kozlowski wrote:
On 17/02/2025 19:58, Dmitry Baryshkov wrote:
On Mon, Feb 17, 2025 at 05:41:26PM +0100, Krzysztof Kozlowski wrote:
Add DisplayPort controller for Qualcomm SM8750 SoC which so far looks
fully compatible with earlier SM8650 variant.
As that became a question for QCS8300, does SM8750 also support exactly
two MST streams?
v1.5 of DP (starting from SA8775p , then SM8650 and SM8750) support 4x
MST for DPTX0 and 2x MST for DPTX1.
The DP in SM8650 and SM8750 are identical, according to datasheet (v1.5.1).
Hmm. This also means that QCS8300 is compatible with SM8650. I'll let
Abhinav comment here.
DP version by itself is not a good measure of whether the controller can
support 4 streams or not.
Firstly, sm8650/sm8750 do not have a DPTX1 so we are only discussing
about DP TX0.
Coming to the QCS8300 Vs sm8650/sm8750, even though the DP controller
version is the same, there is no HW support for more than 2 streams on
sm8650/sm8750 because there are no INTF blocks to drive 4 streams.
On sm8650/sm8750, only INTF_0 and INTF_3 can be used for DP. Hence 2
streams.
Whereas on Monaco, we have INTF_0, INTF_3, INTF_6 and INTF_7 capable of
driving DP. Hence 4 streams.
Let me know if there are more questions.
Thanks
Abhinav
