[V6,01/13] dt-bindings: soc: Add dvfsrc driver bindings

Message ID 1608790134-27425-2-git-send-email-henryc.chen@mediatek.com
State Superseded
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Series
  • [V6,01/13] dt-bindings: soc: Add dvfsrc driver bindings
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Commit Message

Henry Chen Dec. 24, 2020, 6:08 a.m.
Document the binding for enabling dvfsrc on MediaTek SoC.

Signed-off-by: Henry Chen <henryc.chen@mediatek.com>
---
 .../devicetree/bindings/soc/mediatek/dvfsrc.yaml   | 68 ++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/mediatek/dvfsrc.yaml

Comments

Henry Chen Dec. 25, 2020, 5:12 a.m. | #1
On Thu, 2020-12-24 at 10:01 -0700, Rob Herring wrote:
> On Thu, 24 Dec 2020 14:08:42 +0800, Henry Chen wrote:

> > Document the binding for enabling dvfsrc on MediaTek SoC.

> > 

> > Signed-off-by: Henry Chen <henryc.chen@mediatek.com>

> > ---

> >  .../devicetree/bindings/soc/mediatek/dvfsrc.yaml   | 68 ++++++++++++++++++++++

> >  1 file changed, 68 insertions(+)

> >  create mode 100644 Documentation/devicetree/bindings/soc/mediatek/dvfsrc.yaml

> > 

> 

> My bot found errors running 'make dt_binding_check' on your patch:

> 

> yamllint warnings/errors:

> 

> dtschema/dtc warnings/errors:

> Documentation/devicetree/bindings/soc/mediatek/dvfsrc.example.dts:19:18: fatal error: dt-bindings/soc/mtk,dvfsrc.h: No such file or directory

>    19 |         #include <dt-bindings/soc/mtk,dvfsrc.h>

>       |                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

> compilation terminated.

> make[1]: *** [scripts/Makefile.lib:342: Documentation/devicetree/bindings/soc/mediatek/dvfsrc.example.dt.yaml] Error 1

> make: *** [Makefile:1370: dt_binding_check] Error 2

> 

> See https://patchwork.ozlabs.org/patch/1420382

> 

> This check can fail if there are any dependencies. The base for a patch

> series is generally the most recent rc1.

> 

> If you already ran 'make dt_binding_check' and didn't see the above

> error(s), then make sure 'yamllint' is installed and dt-schema is up to

> date:

> 

> pip3 install dtschema --upgrade

> 

> Please check and re-submit.

> 

Hi Rob,

Sorry for the check error, I will re-check and submit again.

Thanks,
Henry

Patch

diff --git a/Documentation/devicetree/bindings/soc/mediatek/dvfsrc.yaml b/Documentation/devicetree/bindings/soc/mediatek/dvfsrc.yaml
new file mode 100644
index 0000000..60e0b7c
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/mediatek/dvfsrc.yaml
@@ -0,0 +1,68 @@ 
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/soc/mediatek/dvfsrc.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: MediaTek dynamic voltage and frequency scaling resource collector (DVFSRC)
+
+description: |
+  The Dynamic Voltage and Frequency Scaling Resource Collector (DVFSRC) is a
+  HW module which is used to collect all the requests from both software and
+  hardware and turn into the decision of minimum operating voltage and minimum
+  DRAM frequency to fulfill those requests.
+
+maintainers:
+  - henryc.chen <henryc.chen@mediatek.com>
+
+properties:
+  reg:
+    description: DVFSRC common register address and length.
+
+  compatible:
+    enum:
+      - mediatek,mt6873-dvfsrc
+      - mediatek,mt8183-dvfsrc
+      - mediatek,mt8192-dvfsrc
+
+  '#interconnect-cells':
+    const: 1
+
+patternProperties:
+  dvfsrc-vcore:
+    type: object
+    description:
+      The DVFSRC regulator is modelled as a subdevice of the DVFSRC.
+      Because DVFSRC can request power directly via register read/write, likes
+      vcore which is a core power of mt8183. As such, the DVFSRC regulator
+      requires that DVFSRC nodes be present.
+    $ref: /schemas/regulator/regulator.yaml#
+
+required:
+  - compatible
+  - reg
+  - "#interconnect-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/soc/mtk,dvfsrc.h>
+    #include <dt-bindings/interconnect/mtk,mt8183-emi.h>
+
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        dvfsrc@10012000 {
+            compatible = "mediatek,mt8183-dvfsrc";
+            reg = <0 0x10012000 0 0x1000>;
+            #interconnect-cells = <1>;
+            dvfsrc_vcore: dvfsrc-vcore {
+                    regulator-name = "dvfsrc-vcore";
+                    regulator-min-microvolt = <725000>;
+                    regulator-max-microvolt = <800000>;
+                    regulator-always-on;
+            };
+        };
+    };