diff mbox series

[v6,2/4] dt-bindings: opp: opp-v2-kryo-cpu: Document named opp-microvolt property

Message ID 20231013173854.7399-3-ansuelsmth@gmail.com
State Accepted
Commit 35e0964e4876c4d77ed0d6d49678f7f6270f32e2
Headers show
Series cpufreq: qcom-nvmem: add support for ipq806x | expand

Commit Message

Christian Marangi Oct. 13, 2023, 5:38 p.m. UTC 
Document named opp-microvolt property for opp-v2-kryo-cpu schema.
This property is used to declare multiple voltage ranges selected on the
different values read from efuses. The selection is done based on the
speed pvs values and the named opp-microvolt property is selected by the
qcom-cpufreq-nvmem driver.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
changes v6:
* Rebase on top of dependant series
* Fix example to use krait

Changes v5:
* Fix typo in opp items

Changes v4:
* Address comments from Rob (meaning of pvs, drop of
  driver specific info, drop of legacy single voltage OPP,
  better specify max regulators supported)
---
 .../bindings/opp/opp-v2-kryo-cpu.yaml         | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.yaml b/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.yaml
index 316f9c7804e4..fd04d060c1de 100644
--- a/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.yaml
+++ b/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.yaml
@@ -68,6 +68,12 @@  patternProperties:
           6:  MSM8996SG, speedbin 2
           7-31:  unused
 
+          Bitmap for IPQ806x SoC:
+          0:  IPQ8062
+          1:  IPQ8064/IPQ8066/IPQ8068
+          2:  IPQ8065/IPQ8069
+          3-31:  unused
+
           Other platforms use bits directly corresponding to speedbin index.
 
       clock-latency-ns: true
@@ -262,6 +268,22 @@  examples:
             };
         };
 
+        /* Dummy opp table to give example for named opp-microvolt */
+        opp-table-2 {
+            compatible = "operating-points-v2-krait-cpu";
+            nvmem-cells = <&speedbin_efuse>;
+
+            opp-384000000 {
+                opp-hz = /bits/ 64 <384000000>;
+                opp-microvolt-speed0-pvs0 = <1000000 950000 1050000>;
+                opp-microvolt-speed0-pvs1 = <925000 878750 971250>;
+                opp-microvolt-speed0-pvs2 = <875000 831250 918750>;
+                opp-microvolt-speed0-pvs3 = <800000 760000 840000>;
+                opp-supported-hw = <0x7>;
+                clock-latency-ns = <100000>;
+            };
+        };
+
         smem {
             compatible = "qcom,smem";
             memory-region = <&smem_mem>;