On 6/16/21 1:50 AM, rajeevny@xxxxxxxxxxxxxx wrote:
On 03-06-2021 01:32, rajeevny@xxxxxxxxxxxxxx wrote:
On 02-06-2021 02:28, Rob Herring wrote:
On Mon, May 31, 2021 at 07:03:53PM +0530, Rajeev Nandan wrote:
+
+properties:
+ compatible:
+ oneOf:
+ - const: qcom,dsi-phy-7nm
When would one use this?
This is for SM8250.
+ - const: qcom,dsi-phy-7nm-7280
+ - const: qcom,dsi-phy-7nm-8150
These don't look like full SoC names (sm8150?) and it's
<vendor>,<soc>-<block>.
Thanks, Rob, for the review.
I just took the `compatible` property currently used in the DSI PHY
driver
(drivers/gpu/drm/msm/dsi/phy/dsi_phy.c), and added a new entry for
sc7280.
A similar pattern of `compatible` names are used in other variants of the
DSI PHY driver e.g. qcom,qcom,dsi-phy-10nm-8998, qcom,dsi-phy-14nm-660
etc.
The existing compatible names "qcom,dsi-phy-7nm-8150" (SoC at the end)
make
some sense, if we look at the organization of the dsi phy driver code.
I am new to this and don't know the reason behind the current code
organization and this naming.
Yes, I agree with you, we should use full SoC names. Adding
the SoC name at the end does not feel very convincing, so I will
change this
to the suggested format e.g. "qcom,sm8250-dsi-phy-7nm", and will
rename the
occurrences in the driver and device tree accordingly.
Do I need to make changes for 10nm, 14nm, 20nm, and 28nm DSI PHY too?
Bindings doc for these PHYs recently got merged to msm-next [1]
[1]
https://gitlab.freedesktop.org/drm/msm/-/commit/8fc939e72ff80116c090aaf03952253a124d2a8e
Hi Rob,
I missed adding "robh+dt@xxxxxxxxxx" earlier in this thread.
Please check my response to your review comments. Regarding your
suggestion to use <vendor>,<soc>-<block> format for compatible property,
should I also upload a new patch to make changes in 10nm, 14nm, 20nm,
and 28nm DSI PHY DT bindings?
Thanks,
Rajeev
Hi,
I missed this and ended up sending a similar patch a week later (as part
of my cphy series, because I needed it to add a "phy-type" property).
"qcom,dsi-phy-7nm" and "qcom,dsi-phy-7nm-8150" aren't new compatibles,
they were previously documented in the .txt bindings, which are getting
removed, but the new .yaml bindings didn't include them. Documenting
them is just a fixup to that patch [1] which is already R-B'd by RobH
(and has similar compatibles such as "qcom,dsi-phy-10nm" and
"qcom,dsi-phy-10nm-8998
").
You can use a different/better naming scheme for sc7280, but changing
the others has nothing to do with adding support for sc7280.
[1]
https://gitlab.freedesktop.org/drm/msm/-/commit/8fc939e72ff80116c090aaf03952253a124d2a8e
