Add device tree bindings for the RZ/G2L Port Output Enable for GPT (POEG).
Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
---
v4->v5:
* Added Rb tag from Rob.
v3->v4:
* Replaced companion->renesas,gpt for the phandle to gpt instance
* Replaced renesas,id->renesas,poeg-id
* Removed default from renesas,poeg-id as default for a required
property doesn't make much sense.
* Updated the example and required properties with above changes
v2->v3:
* Removed Rb tag from Rob as there are some changes introduced.
* Added companion property, so that poeg can link with gpt device
* Documented renesas,id, as identifier for POEGG{A,B,C,D}.
* Updated the example.
v1->v2:
* Updated the description.
REF->v1:
* Modelled as pincontrol as most of its configuration is intended to be
static.
* Updated reg size in example.
---
.../bindings/pinctrl/renesas,rzg2l-poeg.yaml | 86 +++++++++++++++++++
1 file changed, 86 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-poeg.yaml
diff --git a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-poeg.yaml b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-poeg.yaml
new file mode 100644
index 000000000000..ab2d456c93e4
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-poeg.yaml
@@ -0,0 +1,86 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/renesas,rzg2l-poeg.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas RZ/G2L Port Output Enable for GPT (POEG)
+
+maintainers:
+ - Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
+
+description: |
+ The output pins(GTIOCxA and GTIOCxB) of the general PWM timer (GPT) can be
+ disabled by using the port output enabling function for the GPT (POEG).
+ Specifically, either of the following ways can be used.
+ * Input level detection of the GTETRGA to GTETRGD pins.
+ * Output-disable request from the GPT.
+ * SSF bit setting(ie, by setting POEGGn.SSF to 1)
+
+ The state of the GTIOCxA and the GTIOCxB pins when the output is disabled,
+ are controlled by the GPT module.
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - renesas,r9a07g044-poeg # RZ/G2{L,LC}
+ - renesas,r9a07g054-poeg # RZ/V2L
+ - const: renesas,rzg2l-poeg
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ power-domains:
+ maxItems: 1
+
+ resets:
+ maxItems: 1
+
+ renesas,gpt:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description: phandle to gpt instance that serves the pwm operation.
+
+ renesas,poeg-id:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [ 0, 1, 2, 3 ]
+ description: |
+ POEG group index. Valid values are:
+ <0> : POEG group A
+ <1> : POEG group B
+ <2> : POEG group C
+ <3> : POEG group D
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - power-domains
+ - resets
+ - renesas,poeg-id
+ - renesas,gpt
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/r9a07g044-cpg.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ poeggd: poeg@10049400 {
+ compatible = "renesas,r9a07g044-poeg", "renesas,rzg2l-poeg";
+ reg = <0x10049400 0x400>;
+ interrupts = <GIC_SPI 325 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cpg CPG_MOD R9A07G044_POEG_D_CLKP>;
+ power-domains = <&cpg>;
+ resets = <&cpg R9A07G044_POEG_D_RST>;
+ renesas,poeg-id = <3>;
+ renesas,gpt = <&gpt>;
+ };
--
2.25.1
