linux-kernel - [PATCH] [v1] dt-bindings: watchdog: Add HPE GXP Watchdog timer binding

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Message-Id: <20220215184039.41882-1-nick.hawkins@hpe.com>
Date:   Tue, 15 Feb 2022 12:40:37 -0600
From:   nick.hawkins@....com
To:     nick.hawkins@....com, verdun@....com
Cc:     Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Rob Herring <robh+dt@...nel.org>,
        linux-watchdog@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] [v1] dt-bindings: watchdog: Add HPE GXP Watchdog timer binding

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

Description: Creating binding for the GXP watchdog timer to be used in
 the device tree. This along with the
  dt-bindings: timer: Add HPE GXP Timer binding patch will be used to
   create the basic dts and dtsi for GXP.
Information: GXP is the name of the HPE SoC.
 This SoC is used to implement BMC features of HPE servers
  (all ProLiant, Synergy, and many Apollo, and Superdome machines)
   It does support many features including:
        ARMv7 architecture, and it is based on a Cortex A9 core
        Use an AXI bus to which
                a memory controller is attached, as well as
                 multiple SPI interfaces to connect boot flash,
                 and ROM flash, a 10/100/1000 Mac engine which
                 supports SGMII (2 ports) and RMII
                Multiple I2C engines to drive connectivity with a
				 host infrastructure
                A video engine which support VGA and DP, as well as
                 an hardware video encoder
                Multiple PCIe ports
                A PECI interface, and LPC eSPI
                Multiple UART for debug purpose, and Virtual UART for
                 host connectivity
                A GPIO engine.

Signed-off-by: Nick Hawkins <nick.hawkins@....com>
---
 .../bindings/watchdog/hpe,gxp-wdt.yaml        | 37 +++++++++++++++++++
 MAINTAINERS                                   |  6 +++
 2 files changed, 43 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/watchdog/hpe,gxp-wdt.yaml

diff --git a/Documentation/devicetree/bindings/watchdog/hpe,gxp-wdt.yaml b/Documentation/devicetree/bindings/watchdog/hpe,gxp-wdt.yaml
new file mode 100644
index 000000000000..6044496b4968
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/hpe,gxp-wdt.yaml
@@ -0,0 +1,37 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/hpe,gxp-wdt.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: HPE GXP Controlled Watchdog
+
+allOf:
+  - $ref: "watchdog.yaml#"
+
+maintainers:
+  - Nick Hawkins <nick.hawkins@....com>
+  - Jean-Marie Verdun <verdun@....com>
+
+properties:
+  compatible:
+    const: hpe,gxp-wdt
+
+  reg:
+    items:
+      - description: WDGRST register
+      - description: WDGCS register
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    watchdog0:  watchdog@...00090 {
+      compatible = "hpe,gxp-wdt";
+      reg = <0xc0000090 0x02>, <0xc0000096 0x01>;
+    };
+
diff --git a/MAINTAINERS b/MAINTAINERS
index f41088418aae..8c96f4db900c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8385,6 +8385,12 @@ L:	linux-efi@...r.kernel.org
 S:	Maintained
 F:	block/partitions/efi.*
 
+GXP WATCHDOG TIMER
+M:	Nick Hawkins <nick.hawkins@....com>
+M:	Jean-Marie Verdun <verdun@....com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/watchdog/hpe,gxp-wdt.yaml
+
 H8/300 ARCHITECTURE
 M:	Yoshinori Sato <ysato@...rs.sourceforge.jp>
 L:	uclinux-h8-devel@...ts.sourceforge.jp (moderated for non-subscribers)
-- 
2.17.1