[V7,01/13] dt-bindings: soc: Add dvfsrc driver bindings

Message ID 1610092095-5113-2-git-send-email-henryc.chen@mediatek.com
State New
Headers show
Series
  • Add driver for dvfsrc, support for active state of scpsys
Related show

Commit Message

Henry Chen Jan. 8, 2021, 7:48 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   | 67 ++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/mediatek/dvfsrc.yaml

Comments

Henry Chen Jan. 11, 2021, 2:52 a.m. | #1
Hi Rob,

On Fri, 2021-01-08 at 20:30 -0700, Rob Herring wrote:
> On Fri, 08 Jan 2021 15:48:03 +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   | 67 ++++++++++++++++++++++

> >  1 file changed, 67 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/interconnect/mtk,mt8183-emi.h: No such file or directory

>    19 |         #include <dt-bindings/interconnect/mtk,mt8183-emi.h>

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

Sorry, because this header file is added on "[V7,07/13] dt-bindings:
interconnect: add MT8183 interconnect dt-bindings".
Should I change the order of the patchset (let the yaml pathc behind the
header) to fixed that ?

Thanks,
Henry
> compilation terminated.

> make[1]: *** [scripts/Makefile.lib:344: 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/1423679

> 

> 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.

>
Rob Herring Jan. 11, 2021, 3:42 p.m. | #2
On Sun, Jan 10, 2021 at 8:52 PM Henry Chen <henryc.chen@mediatek.com> wrote:
>

> Hi Rob,

>

> On Fri, 2021-01-08 at 20:30 -0700, Rob Herring wrote:

> > On Fri, 08 Jan 2021 15:48:03 +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   | 67 ++++++++++++++++++++++

> > >  1 file changed, 67 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/interconnect/mtk,mt8183-emi.h: No such file or directory

> >    19 |         #include <dt-bindings/interconnect/mtk,mt8183-emi.h>

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

> Sorry, because this header file is added on "[V7,07/13] dt-bindings:

> interconnect: add MT8183 interconnect dt-bindings".

> Should I change the order of the patchset (let the yaml pathc behind the

> header) to fixed that ?


DT headers should be part of the binding schema patch. (Or at least come first).

Rob

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..0b746a8
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/mediatek/dvfsrc.yaml
@@ -0,0 +1,67 @@ 
+# 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/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;
+            };
+        };
+    };