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

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Message-Id: <20220215181936.41551-1-nick.hawkins@hpe.com>
Date:   Tue, 15 Feb 2022 12:19:35 -0600
From:   nick.hawkins@....com
To:     nick.hawkins@....com, verdun@....com
Cc:     Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Rob Herring <robh+dt@...nel.org>, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: [PATCH] [v1] dt-bindings: timer: Add HPE GXP Timer binding

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

Description: Creating binding for the GXP timer to be used in device tree.
 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/timer/hpe,gxp-timer.yaml         | 45 +++++++++++++++++++
 MAINTAINERS                                   |  6 +++
 2 files changed, 51 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/timer/hpe,gxp-timer.yaml

diff --git a/Documentation/devicetree/bindings/timer/hpe,gxp-timer.yaml b/Documentation/devicetree/bindings/timer/hpe,gxp-timer.yaml
new file mode 100644
index 000000000000..1f4e345c5fb8
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/hpe,gxp-timer.yaml
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/timer/hpe,gxp-timer.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: HPE GXP TIMER
+
+maintainers:
+  - Nick Hawkins <nick.hawkins@....com>
+  - Jean-Marie Verdun <verdun@....com>
+
+properties:
+  compatible:
+    const: hpe,gxp-timer
+
+  reg:
+    items:
+      - description: T0CNT register
+      - description: T0CS register
+      - description: TIMELO register
+
+  interrupts:
+    maxItems: 1
+
+  clock-frequency:
+    description: The frequency of the clock that drives the counter, in Hz.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clock-frequency
+
+additionalProperties: false
+
+examples:
+  - |
+    timer@...03000 {
+        compatible = "hpe,gxp-timer";
+        reg = <0xc0000080 0x1>, <0xc0000094 0x01>, <0xc0000088 0x08>;
+        interrupts = <0>;
+        interrupt-parent = <&vic0>;
+        clock-frequency = <400000000>;
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index f41088418aae..8c2c1e8e0934 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8385,6 +8385,12 @@ L:	linux-efi@...r.kernel.org
 S:	Maintained
 F:	block/partitions/efi.*
 
+GXP TIMER
+M:	Nick Hawkins <nick.hawkins@....com>
+M:	Jean-Marie Verdun <verdun@....com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/timer/hpe,gxp-timer.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