[v3,01/15] dt-bindings: phy: qcom,qmp-usb3-dp: rename current bindings

Commit Message

Johan Hovold Nov. 21, 2022, 8:50 a.m. UTC

The current QMP USB3-DP PHY bindings are based on the original MSM8996
binding which provided multiple PHYs per IP block and these in turn were
described by child nodes.

The QMP USB3-DP PHY block provides a single multi-protocol PHY and
even if some resources are only used by either the USB or DP part of the
device there is no real benefit in describing these resources in child
nodes.

The original MSM8996 binding also ended up describing the individual
register blocks as belonging to either the wrapper node or the PHY child
nodes.

This is an unnecessary level of detail which has lead to problems when
later IP blocks using different register layouts have been forced to fit
the original mould rather than updating the binding. The bindings are
arguable also incomplete as they only the describe register blocks used
by the current Linux drivers (e.g. does not include the PCS_LANE
registers).

In preparation for adding new bindings for SC8280XP which further
bindings can be based on, rename the current schema file after SC7180,
which was the first supported platform, and add a reference to the
SC8280XP bindings.

Reviewed-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Johan Hovold <[e-mail]>
---
 ...dp-phy.yaml => qcom,sc7180-qmp-usb3-dp-phy.yaml} | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)
 rename Documentation/devicetree/bindings/phy/{qcom,qmp-usb3-dp-phy.yaml => qcom,sc7180-qmp-usb3-dp-phy.yaml} (91%)

Patch

diff --git a/Documentation/devicetree/bindings/phy/qcom,qmp-usb3-dp-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,sc7180-qmp-usb3-dp-phy.yaml
similarity index 91%
rename from Documentation/devicetree/bindings/phy/qcom,qmp-usb3-dp-phy.yaml
rename to Documentation/devicetree/bindings/phy/qcom,sc7180-qmp-usb3-dp-phy.yaml
index 97a7ecafbf85..8afc5e815ae8 100644
--- a/Documentation/devicetree/bindings/phy/qcom,qmp-usb3-dp-phy.yaml
+++ b/Documentation/devicetree/bindings/phy/qcom,sc7180-qmp-usb3-dp-phy.yaml
@@ -2,10 +2,17 @@ 
 
 %YAML 1.2
 ---
-$id: "http://devicetree.org/schemas/phy/qcom,qmp-usb3-dp-phy.yaml#"
-$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+$id: http://devicetree.org/schemas/phy/qcom,sc7180-qmp-usb3-dp-phy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Qualcomm QMP USB3 DP PHY controller
+title: Qualcomm QMP USB3 DP PHY controller (SC7180)
+
+description:
+  The QMP PHY controller supports physical layer functionality for a number of
+  controllers on Qualcomm chipsets, such as, PCIe, UFS and USB.
+
+  Note that these bindings are for SoCs up to SC8180X. For newer SoCs, see
+  qcom,sc8280xp-qmp-usb43dp-phy.yaml.
 
 maintainers:
   - Wesley Cheng <[e-mail]>