linux-kernel - [PATCH v3 1/2] dt-bindings: w1: Add YAML DT schema for AMD AXI w1 host and MAINTAINERS entry

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Message-ID: <20231107180814.615933-2-kris.chaplin@amd.com>
Date:   Tue, 7 Nov 2023 10:06:51 -0800
From:   Kris Chaplin <kris.chaplin@....com>
To:     <kris.chaplin@....com>, <thomas.delev@....com>,
        <michal.simek@....com>, <krzysztof.kozlowski@...aro.org>,
        <robh+dt@...nel.org>, <conor+dt@...nel.org>
CC:     <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <git@....com>, Conor Dooley <conor.dooley@...rochip.com>
Subject: [PATCH v3 1/2] dt-bindings: w1: Add YAML DT schema for AMD AXI w1 host and MAINTAINERS entry

Add YAML DT schema for the AMD AXI w1 host IP.

This hardware guarantees protocol timing for driving off-board devices such
as thermal sensors, proms, etc using the 1wire protocol.  The IP has a register
to detect hardware version and so the binding does not have an explict version
number.

Add MAINTAINERS entry for DT schema.

Co-developed-by: Thomas Delev <thomas.delev@....com>
Signed-off-by: Thomas Delev <thomas.delev@....com>
Signed-off-by: Kris Chaplin <kris.chaplin@....com>
Reviewed-by: Conor Dooley <conor.dooley@...rochip.com>
---
 .../bindings/w1/amd,axi-1wire-host.yaml       | 44 +++++++++++++++++++
 MAINTAINERS                                   |  7 +++
 2 files changed, 51 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/w1/amd,axi-1wire-host.yaml

diff --git a/Documentation/devicetree/bindings/w1/amd,axi-1wire-host.yaml b/Documentation/devicetree/bindings/w1/amd,axi-1wire-host.yaml
new file mode 100644
index 000000000000..ef70fa2c0c5d
--- /dev/null
+++ b/Documentation/devicetree/bindings/w1/amd,axi-1wire-host.yaml
@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/w1/amd,axi-1wire-host.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: AMD AXI 1-wire bus host for programmable logic
+
+maintainers:
+  - Kris Chaplin <kris.chaplin@....com>
+
+properties:
+  compatible:
+    const: amd,axi-1wire-host
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    onewire@...00000 {
+        compatible = "amd,axi-1wire-host";
+        reg = <0xa0000000 0x10000>;
+        clocks = <&zynqmp_clk 0x47>;
+        interrupts = <GIC_SPI 0x59 IRQ_TYPE_LEVEL_HIGH>;
+    };
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index 375b2c87d099..2b23febfaf72 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -891,6 +891,13 @@ Q:	https://patchwork.kernel.org/project/linux-rdma/list/
 F:	drivers/infiniband/hw/efa/
 F:	include/uapi/rdma/efa-abi.h
 
+AMD AXI W1 DRIVER
+M:	Kris Chaplin <kris.chaplin@....com>
+R:	Thomas Delev <thomas.delev@....com>
+R:	Michal Simek <michal.simek@....com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/w1/amd,axi-1wire-host.yaml
+
 AMD CDX BUS DRIVER
 M:	Nipun Gupta <nipun.gupta@....com>
 M:	Nikhil Agarwal <nikhil.agarwal@....com>
-- 
2.42.GIT