diff mbox series

[10/13] dt-bindings: phy: qcom,qmp-usb: rename current bindings

Message ID 20221024100632.20549-11-johan+linaro@kernel.org
State New
Headers
Series phy: qcom-qmp-usb: fix sc8280xp binding |

Commit Message

Johan Hovold Oct. 24, 2022, 10:06 a.m. UTC 
  The current QMP USB 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.

Later QMP USB PHY blocks only provide a single PHY and the remnant child
node does not really reflect the hardware.

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 per lane PCS
registers).

In preparation for adding new bindings for SC8280XP which further
bindings can be based on, rename the current bindings after MSM8996 and
add a reference to the SC8280XP bindings.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 ...qcom,qmp-usb-phy.yaml => qcom,msm8996-qmp-usb-phy.yaml} | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
 rename Documentation/devicetree/bindings/phy/{qcom,qmp-usb-phy.yaml => qcom,msm8996-qmp-usb-phy.yaml} (97%)

Comments

Krzysztof Kozlowski Oct. 28, 2022, 2:12 a.m. UTC | #1 
On 24/10/2022 06:06, Johan Hovold wrote:
> The current QMP USB 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.
> 
> Later QMP USB PHY blocks only provide a single PHY and the remnant child
> node does not really reflect the hardware.
> 
> 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 per lane PCS
> registers).
> 
> In preparation for adding new bindings for SC8280XP which further
> bindings can be based on, rename the current bindings after MSM8996 and
> add a reference to the SC8280XP bindings.
> 
> Signed-off-by: Johan Hovold <johan+linaro@kernel.org>


Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/phy/qcom,qmp-usb-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,msm8996-qmp-usb-phy.yaml
similarity index 97%
rename from Documentation/devicetree/bindings/phy/qcom,qmp-usb-phy.yaml
rename to Documentation/devicetree/bindings/phy/qcom,msm8996-qmp-usb-phy.yaml
index 7acb4b7de7f9..a72e96f241d1 100644
--- a/Documentation/devicetree/bindings/phy/qcom,qmp-usb-phy.yaml
+++ b/Documentation/devicetree/bindings/phy/qcom,msm8996-qmp-usb-phy.yaml
@@ -1,10 +1,10 @@ 
 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
 %YAML 1.2
 ---
-$id: http://devicetree.org/schemas/phy/qcom,qmp-usb-phy.yaml#
+$id: http://devicetree.org/schemas/phy/qcom,msm8996-qmp-usb-phy.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Qualcomm QMP PHY controller (USB)
+title: Qualcomm QMP PHY controller (USB, MSM8996)
 
 maintainers:
   - Vinod Koul <vkoul@kernel.org>
@@ -13,6 +13,9 @@  description:
   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-usb-phy.yaml.
+
 properties:
   compatible:
     enum: