[v2,01/16] dt-bindings: phy: qmp-ufs: Fix PHY clocks

Commit Message

Manivannan Sadhasivam Dec. 18, 2023, 12:06 p.m. UTC

All QMP UFS PHYs except MSM8996 require 3 clocks:

* ref - 19.2MHz reference clock from RPMh
* ref_aux - Auxiliary reference clock from GCC
* qref - QREF clock from GCC or TCSR (since SM8550)

MSM8996 only requires 'ref' and 'qref' clocks. Hence, fix the binding to
reflect the actual clock topology.

This change obviously breaks the ABI, but it is inevitable since the
clock topology needs to be accurately described in the binding.

Reviewed-by: Conor Dooley <[e-mail]>
Signed-off-by: Manivannan Sadhasivam <[e-mail]>
---
 .../phy/qcom,sc8280xp-qmp-ufs-phy.yaml        | 47 +++++++++----------
 1 file changed, 21 insertions(+), 26 deletions(-)

Comments

Vinod Koul Jan. 24, 2024, 5:44 a.m. UTC | #1

On 18-12-23, 17:36, Manivannan Sadhasivam wrote:
> All QMP UFS PHYs except MSM8996 require 3 clocks:
> 
> * ref - 19.2MHz reference clock from RPMh
> * ref_aux - Auxiliary reference clock from GCC
> * qref - QREF clock from GCC or TCSR (since SM8550)
> 
> MSM8996 only requires 'ref' and 'qref' clocks. Hence, fix the binding to
> reflect the actual clock topology.
> 
> This change obviously breaks the ABI, but it is inevitable since the
> clock topology needs to be accurately described in the binding.

This fails to apply on phy/fixes, pls rebase

Patch

diff --git a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-ufs-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-ufs-phy.yaml
index f3a3296c811c..800f11b29dcd 100644
--- a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-ufs-phy.yaml
+++ b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-ufs-phy.yaml
@@ -37,15 +37,12 @@  properties:
     maxItems: 1
 
   clocks:
-    minItems: 1
+    minItems: 2
     maxItems: 3
 
   clock-names:
-    minItems: 1
-    items:
-      - const: ref
-      - const: ref_aux
-      - const: qref
+    minItems: 2
+    maxItems: 3
 
   power-domains:
     maxItems: 1
@@ -85,22 +82,9 @@  allOf:
         compatible:
           contains:
             enum:
+              - qcom,msm8998-qmp-ufs-phy
               - qcom,sa8775p-qmp-ufs-phy
               - qcom,sc7280-qmp-ufs-phy
-              - qcom,sm8450-qmp-ufs-phy
-    then:
-      properties:
-        clocks:
-          minItems: 3
-        clock-names:
-          minItems: 3
-
-  - if:
-      properties:
-        compatible:
-          contains:
-            enum:
-              - qcom,msm8998-qmp-ufs-phy
               - qcom,sc8180x-qmp-ufs-phy
               - qcom,sc8280xp-qmp-ufs-phy
               - qcom,sdm845-qmp-ufs-phy
@@ -111,13 +95,18 @@  allOf:
               - qcom,sm8150-qmp-ufs-phy
               - qcom,sm8250-qmp-ufs-phy
               - qcom,sm8350-qmp-ufs-phy
+              - qcom,sm8450-qmp-ufs-phy
               - qcom,sm8550-qmp-ufs-phy
     then:
       properties:
         clocks:
-          maxItems: 2
+          minItems: 3
+          maxItems: 3
         clock-names:
-          maxItems: 2
+          items:
+            - const: ref
+            - const: ref_aux
+            - const: qref
 
   - if:
       properties:
@@ -128,22 +117,28 @@  allOf:
     then:
       properties:
         clocks:
-          maxItems: 1
+          minItems: 2
+          maxItems: 2
         clock-names:
-          maxItems: 1
+          items:
+            - const: ref
+            - const: qref
 
 additionalProperties: false
 
 examples:
   - |
     #include <dt-bindings/clock/qcom,gcc-sc8280xp.h>
+    #include <dt-bindings/clock/qcom,rpmh.h>
 
     ufs_mem_phy: phy@1d87000 {
         compatible = "qcom,sc8280xp-qmp-ufs-phy";
         reg = <0x01d87000 0x1000>;
 
-        clocks = <&gcc GCC_UFS_REF_CLKREF_CLK>, <&gcc GCC_UFS_PHY_PHY_AUX_CLK>;
-        clock-names = "ref", "ref_aux";
+        clocks = <&rpmhcc RPMH_CXO_CLK>, <&gcc GCC_UFS_PHY_PHY_AUX_CLK>,
+                 <&gcc GCC_UFS_REF_CLKREF_CLK>;
+
+        clock-names = "ref", "ref_aux", "qref";
 
         power-domains = <&gcc UFS_PHY_GDSC>;