From 3427fa5b32bbf54e51a2fde347a88161ff16a641 Mon Sep 17 00:00:00 2001
From: Kris Chaplin <kris.chaplin@amd.com>
Date: Tue, 7 Nov 2023 10:06:51 -0800
Subject: [PATCH] dt-bindings: w1: Add 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 explicit version number.
Add MAINTAINERS entry for DT schema.
Co-developed-by: Thomas Delev <thomas.delev@amd.com>
Signed-off-by: Thomas Delev <thomas.delev@amd.com>
Signed-off-by: Kris Chaplin <kris.chaplin@amd.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20231107180814.615933-2-kris.chaplin@amd.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
.../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 0000000000000..ef70fa2c0c5da
--- /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@amd.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@a0000000 {
+ 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 97f51d5ec1cfd..cecf289e4ddc1 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -893,6 +893,13 @@ 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@amd.com>
+R: Thomas Delev <thomas.delev@amd.com>
+R: Michal Simek <michal.simek@amd.com>
+S: Maintained
+F: Documentation/devicetree/bindings/w1/amd,axi-1wire-host.yaml
+
AMD CDX BUS DRIVER
M: Nipun Gupta <nipun.gupta@amd.com>
M: Nikhil Agarwal <nikhil.agarwal@amd.com>
--
GitLab