On Mon, Aug 26, 2019 at 4:52 AM Dilip Kota [off-list ref] wrote:

Hi Rob,

On 8/23/2019 8:25 PM, Rob Herring wrote:

quoted

On Fri, Aug 23, 2019 at 12:28 AM Dilip Kota [off-list ref] wrote:

quoted

Add YAML schemas for the reset controller on Intel
Lightening Mountain (LGM) SoC.

Signed-off-by: Dilip Kota <redacted>
---
Changes on v2:
     Address review comments
       Update the compatible property definition
       Add description for reset-cells
       Add 'additionalProperties: false' property

  .../bindings/reset/intel,syscon-reset.yaml         | 53 ++++++++++++++++++++++
  1 file changed, 53 insertions(+)
  create mode 100644 Documentation/devicetree/bindings/reset/intel,syscon-reset.yaml

diff --git a/Documentation/devicetree/bindings/reset/intel,syscon-reset.yaml b/Documentation/devicetree/bindings/reset/intel,syscon-reset.yaml
new file mode 100644
index 000000000000..3403a967190a
--- /dev/null
+++ b/Documentation/devicetree/bindings/reset/intel,syscon-reset.yaml

@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/reset/intel,syscon-reset.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Intel Lightening Mountain SoC System Reset Controller
+
+maintainers:
+  - Dilip Kota <eswara.kota@linux.intel.com>
+
+properties:
+  compatible:
+    items:
+      - const: intel,rcu-lgm
+      - const: syscon
+
+  reg:
+    description: Reset controller register base address and size
+
+  intel,global-reset:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    description: Global reset register offset and bit offset.
+
+  "#reset-cells":
+    const: 2
+    description: |
+      The 1st cell is the register offset.
+      The 2nd cell is the bit offset in the register.
+
+required:
+  - compatible
+  - reg
+  - intel,global-reset
+  - "#reset-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    rcu0: reset-controller@00000000 {
+        compatible = "intel,rcu-lgm", "syscon";
+        reg = <0x000000 0x80000>;
+        intel,global-reset = <0x10 30>;
+        #reset-cells = <2>;
+    };
+
+    pcie_phy0: pciephy@... {
+        ...

You need to run 'make dt_binding_check' and fix the warnings. The
example has to be buildable and it is not.

Sure, i  will correct this pcie_phy0 node. But i didn't get any warnings
for make dt_binding_check

   CHKDT Documentation/devicetree/bindings/reset/intel,syscon-reset.yaml
DTC Documentation/devicetree/bindings/arm/renesas.example.dt.yaml
FATAL ERROR: Unknown output format "yaml"

Will DTC report about the example node errors? But, DTC is failing with
FATAL_ERROR.
I tried it even after installing libyaml and headers in my local
directory and export the path, but no luck.(ref:
https://lkml.org/lkml/2018/12/3/951)
Could you please let me know if i miss anything and help me to proceed
further.

See Documentation/devicetree/writing-schema.md

Rob