[PATCH v3 1/5] dt-bindings: gpio: Add HPE GXP GPIO

[nick.hawkins@hpe.com]

From: Nick Hawkins <nick.hawkins@hpe.com>

Provide access to the register regions and interrupt for GPIO. There
will be two drivers available. The first driver under the hpe,gxp-gpio
binding will provide GPIO information for the VUHC, CSM, and FN2
host interfaces. The second driver under the hpe,gxp-gpio-pl will
provide GPIO information from the CPLD interface. The main difference
and need for two separate bindings is they have different interrupt
parents. The other is hpe,gxp-gpio is a combination of physical
and virtual GPIOs where as hpe,gxp-gpio-pl are all physical
GPIOs from the CPLD.

Signed-off-by: Nick Hawkins <nick.hawkins@hpe.com>

---

v3:
 *Remove extra example in examples
 *Actually fixed indentation on example - Aligned
  GPIO line names with " above.
v2:
 *Put binding patch before the driver in the series
 *Improved patch description
 *Removed oneOf and items in compatible definition
 *Moved additionalProperties definition to correct spot in file
 *Fixed indentation on example
 *Improved description in .yaml
---
 .../bindings/gpio/hpe,gxp-gpio.yaml           | 139 ++++++++++++++++++
 1 file changed, 139 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpio/hpe,gxp-gpio.yaml

diff --git a/Documentation/devicetree/bindings/gpio/hpe,gxp-gpio.yaml b/Documentation/devicetree/bindings/gpio/hpe,gxp-gpio.yaml
new file mode 100644
index 000000000000..72cfff4d3e26
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/hpe,gxp-gpio.yaml
@@ -0,0 +1,139 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/hpe,gxp-gpio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: HPE GXP gpio controllers
+
+maintainers:
+  - Nick Hawkins <nick.hawkins@hpe.com>
+
+description:
+  Interruptable GPIO drivers for the HPE GXP that covers multiple interfaces
+  of both physical and virtual GPIO pins.
+
+properties:
+  compatible:
+    enum:
+      - hpe,gxp-gpio
+      - hpe,gxp-gpio-pl
+
+  reg:
+    minItems: 2
+    maxItems: 6
+
+  reg-names:
+    minItems: 2
+    maxItems: 6
+
+  gpio-controller: true
+
+  "#gpio-cells":
+    const: 2
+
+  gpio-line-names:
+    minItems: 80
+    maxItems: 300
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - gpio-controller
+  - "#gpio-cells"
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - hpe,gxp-gpio
+    then:
+      properties:
+        reg:
+          items:
+            - description: CSM GPIO interface
+            - description: fn2 virtual button GPIO
+            - description: fn2 system status GPIO
+            - description: vuhc GPIO status interface
+        reg-names:
+          items:
+            - const: csm
+            - const: fn2-vbtn
+            - const: fn2-stat
+            - const: vuhc
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - hpe,gxp-gpio-pl
+    then:
+      properties:
+        reg:
+          items:
+            - description: Programmable logic device GPIO
+            - description: Programmable logic device interrupt GPIO
+        reg-names:
+          items:
+            - const: base
+            - const: interrupt
+
+additionalProperties: false
+
+examples:
+  - |
+    gpio@0 {
+        compatible = "hpe,gxp-gpio";
+        reg = <0x0 0x400>, <0x200046 0x1>, <0x200070 0x08>, <0x400064 0x80>;
+        reg-names = "csm", "fn2-vbtn", "fn2-stat", "vuhc";
+        gpio-controller;
+        #gpio-cells = <2>;
+        interrupt-parent = <&vic0>;
+        interrupts = <10>;
+        gpio-line-names = "IOP_LED1", "IOP_LED2",
+                          "IOP_LED3", "IOP_LED4",
+                          "IOP_LED5", "IOP_LED6",
+                          "IOP_LED7", "IOP_LED8",
+                          "FAN1_INST", "FAN2_INST",
+                          "FAN3_INST", "FAN4_INST",
+                          "FAN5_INST", "FAN6_INST",
+                          "FAN7_INST", "FAN8_INST",
+                          "FAN1_FAIL", "FAN2_FAIL",
+                          "FAN3_FAIL", "FAN4_FAIL",
+                          "FAN5_FAIL", "FAN6_FAIL",
+                          "FAN7_FAIL", "FAN8_FAIL",
+                          "FAN1_ID", "FAN2_ID",
+                          "FAN3_ID", "FAN4_ID",
+                          "FAN5_ID", "FAN6_ID",
+                          "FAN7_ID", "FAN8_ID",
+                          "IDENTIFY", "HEALTH_RED",
+                          "HEALTH_AMBER", "POWER_BUTTON",
+                          "UID_PRESS", "SLP",
+                          "NMI_BUTTON", "RESET_BUTTON",
+                          "SIO_S5", "SO_ON_CONTROL",
+                          "PSU1_INST", "PSU2_INST",
+                          "PSU3_INST", "PSU4_INST",
+                          "PSU5_INST", "PSU6_INST",
+                          "PSU7_INST", "PSU8_INST",
+                          "PSU1_AC", "PSU2_AC",
+                          "PSU3_AC", "PSU4_AC",
+                          "PSU5_AC", "PSU6_AC",
+                          "PSU7_AC", "PSU8_AC",
+                          "PSU1_DC", "PSU2_DC",
+                          "PSU3_DC", "PSU4_DC",
+                          "PSU5_DC", "PSU6_DC",
+                          "PSU7_DC", "PSU8_DC",
+                          "", "",
+                          "", "",
+                          "", "",
+                          "", "",
+                          "", "",
+                          "", "",
+                          "", "";
+    };
-- 
2.17.1