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[v2,3/6] dt-bindings: auxdisplay: Add Titan Micro Electronics TM1628

Message ID 39d61ddb-4b54-4a13-fbb2-c0f88d9bf017@gmail.com
State New
Headers show
Series auxdisplay: Add support for the Titanmec TM1628 7 segment display controller | expand

Commit Message

Heiner Kallweit Feb. 21, 2022, 8:23 p.m. UTC
Add a YAML schema binding for TM1628 auxdisplay
(7/11-segment LED) controller.

This patch is partially based on previous RFC work from
Andreas Färber <afaerber@suse.de>.

Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
---
v2:
- (re-)add Andreas' SoB
- fix YAML errors reported by Rob
---
 .../bindings/auxdisplay/titanmec,tm1628.yaml  | 88 +++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/auxdisplay/titanmec,tm1628.yaml

Comments

Rob Herring (Arm) Feb. 22, 2022, 2:22 p.m. UTC | #1
On Mon, 21 Feb 2022 21:23:18 +0100, Heiner Kallweit wrote:
> Add a YAML schema binding for TM1628 auxdisplay
> (7/11-segment LED) controller.
> 
> This patch is partially based on previous RFC work from
> Andreas Färber <afaerber@suse.de>.
> 
> Signed-off-by: Andreas Färber <afaerber@suse.de>
> Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
> ---
> v2:
> - (re-)add Andreas' SoB
> - fix YAML errors reported by Rob
> ---
>  .../bindings/auxdisplay/titanmec,tm1628.yaml  | 88 +++++++++++++++++++
>  1 file changed, 88 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/auxdisplay/titanmec,tm1628.yaml
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/auxdisplay/titanmec,tm1628.example.dt.yaml: led-controller@0: 'spi-3-wire', 'spi-lsb-first', 'spi-max-frequency' do not match any of the regexes: '^.*@[1-7],([1-9]|1[0-6])$', 'pinctrl-[0-9]+'
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/auxdisplay/titanmec,tm1628.yaml

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/patch/1595730

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.
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/auxdisplay/titanmec,tm1628.yaml b/Documentation/devicetree/bindings/auxdisplay/titanmec,tm1628.yaml
new file mode 100644
index 000000000..da7cc16e7
--- /dev/null
+++ b/Documentation/devicetree/bindings/auxdisplay/titanmec,tm1628.yaml
@@ -0,0 +1,88 @@ 
+# SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/auxdisplay/titanmec,tm1628.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Titan Micro Electronics TM1628 LED controller
+
+maintainers:
+  - Andreas Färber <afaerber@suse.de>
+  - Heiner Kallweit <hkallweit1@gmail.com>
+
+properties:
+  compatible:
+    enum:
+      - titanmec,tm1628
+
+  reg:
+    maxItems: 1
+
+  grid:
+    description:
+      Mapping of display digit position to grid number.
+      This implicitly defines the display size.
+    $ref: /schemas/types.yaml#/definitions/uint8-array
+    minItems: 1
+    maxItems: 7
+
+  segment-mapping:
+    description:
+      Mapping of 7 segment display segments A-G to bit numbers 1-12.
+    $ref: /schemas/types.yaml#/definitions/uint8-array
+    minItems: 7
+    maxItems: 7
+
+  "#address-cells":
+    const: 2
+
+  "#size-cells":
+    const: 0
+
+required:
+  - compatible
+  - reg
+
+patternProperties:
+  "^.*@[1-7],([1-9]|1[0-6])$":
+    type: object
+    description: |
+      Properties for a single LED.
+
+    properties:
+      reg:
+        description: |
+          1-based grid number, followed by 1-based segment bit number.
+        maxItems: 1
+
+    required:
+      - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/leds/common.h>
+
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        led-controller@0 {
+            compatible = "titanmec,tm1628";
+            reg = <0>;
+            spi-3-wire;
+            spi-lsb-first;
+            spi-max-frequency = <500000>;
+            grid = /bits/ 8 <4 3 2 1>;
+            segment-mapping = /bits/ 8 <4 5 6 1 2 3 7>;
+            #address-cells = <2>;
+            #size-cells = <0>;
+
+            alarmn@5,4 {
+                reg = <5 4>;
+                function = LED_FUNCTION_ALARM;
+            };
+        };
+    };
+...