linux-kernel - [PATCH v5 1/5] dt-bindings: gpio: Add HPE GXP GPIO

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Message-Id: <20230705194544.100370-2-nick.hawkins@hpe.com>
Date:   Wed,  5 Jul 2023 14:45:40 -0500
From:   nick.hawkins@....com
To:     verdun@....com, nick.hawkins@....com, linus.walleij@...aro.org,
        brgl@...ev.pl, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, jdelvare@...e.com,
        linux@...ck-us.net, andy.shevchenko@...il.com,
        linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-hwmon@...r.kernel.org
Subject: [PATCH v5 1/5] dt-bindings: gpio: Add HPE GXP GPIO

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

Provide access to the register regions and interrupt for GPIO. The
driver under the hpe,gxp-gpio-pl will provide GPIO information from the
CPLD interface. The CPLD interface represents all physical GPIOs. The
GPIO interface with the CPLD allows use of interrupts.

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

---

v5:
 *Removed use of gpio-gxp in favor of just supporting
  hpe,gxp-gpio-pl for now as the full gpio-gxp will
  require a much larger patchset
 *Modified commit description to reflect removal of
  hpe,gxp-gpio
v4:
 *Fix min and max values for regs
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           | 71 +++++++++++++++++++
 1 file changed, 71 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..799643c1a0c2
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/hpe,gxp-gpio.yaml
@@ -0,0 +1,71 @@
+# 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@....com>
+
+description:
+  Interruptable GPIO drivers for the HPE GXP that covers multiple interfaces
+  of both physical and virtual GPIO pins.
+
+properties:
+  compatible:
+    const: hpe,gxp-gpio-pl
+
+  reg:
+    items:
+      - description: pl base gpio
+      - description: pl interrupt gpio
+
+  reg-names:
+    items:
+      - const: base
+      - const: interrupt
+
+  gpio-controller: true
+
+  "#gpio-cells":
+    const: 2
+
+  gpio-line-names:
+    maxItems: 80
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - gpio-controller
+  - "#gpio-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+        gpio@...00300 {
+          compatible = "hpe,gxp-gpio-pl";
+          reg = <0x51000300 0x7f>, <0x51000380 0x20>;
+          reg-names = "base", "interrupt";
+          gpio-controller;
+          #gpio-cells = <2>;
+          interrupt-parent = <&vic0>;
+          interrupts = <24>;
+          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