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Date: Fri, 9 Jun 2023 16:34:47 +0530
From: Piyush Mehta <piyush.mehta@....com>
To: <p.zabel@...gutronix.de>, <robh+dt@...nel.org>,
<krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
<michal.simek@....com>, <michal.simek@...inx.com>,
<nava.manne@...inx.com>
CC: <linux-usb@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>,
<siva.durga.prasad.paladugu@....com>, <git@....com>,
Piyush Mehta <piyush.mehta@....com>
Subject: [PATCH V2] dt-bindings: reset: convert the xlnx,zynqmp-reset.txt to yaml
Convert the binding to DT schema format. It also updates the
reset-controller description.
Signed-off-by: Piyush Mehta <piyush.mehta@....com>
---
- Addressed the Krzysztof review comment:
- Update DT binding to fix the dt_binding_check warning.
Link: https://lore.kernel.org/lkml/168612336438.2153757.6000360498539992409.robh@kernel.org/T/#m4abfe6287177d5fd09f781d298dd19d56aae5e27
---
.../bindings/reset/xlnx,zynqmp-reset.txt | 55 ----------------
.../bindings/reset/xlnx,zynqmp-reset.yaml | 64 +++++++++++++++++++
2 files changed, 64 insertions(+), 55 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/reset/xlnx,zynqmp-reset.txt
create mode 100644 Documentation/devicetree/bindings/reset/xlnx,zynqmp-reset.yaml
diff --git a/Documentation/devicetree/bindings/reset/xlnx,zynqmp-reset.txt b/Documentation/devicetree/bindings/reset/xlnx,zynqmp-reset.txt
deleted file mode 100644
index ed836868dbf1..000000000000
--- a/Documentation/devicetree/bindings/reset/xlnx,zynqmp-reset.txt
+++ /dev/null
@@ -1,55 +0,0 @@
---------------------------------------------------------------------------
- = Zynq UltraScale+ MPSoC and Versal reset driver binding =
---------------------------------------------------------------------------
-The Zynq UltraScale+ MPSoC and Versal has several different resets.
-
-See Chapter 36 of the Zynq UltraScale+ MPSoC TRM (UG) for more information
-about zynqmp resets.
-
-Please also refer to reset.txt in this directory for common reset
-controller binding usage.
-
-Required Properties:
-- compatible: "xlnx,zynqmp-reset" for Zynq UltraScale+ MPSoC platform
- "xlnx,versal-reset" for Versal platform
-- #reset-cells: Specifies the number of cells needed to encode reset
- line, should be 1
-
--------
-Example
--------
-
-firmware {
- zynqmp_firmware: zynqmp-firmware {
- compatible = "xlnx,zynqmp-firmware";
- method = "smc";
-
- zynqmp_reset: reset-controller {
- compatible = "xlnx,zynqmp-reset";
- #reset-cells = <1>;
- };
- };
-};
-
-Specifying reset lines connected to IP modules
-==============================================
-
-Device nodes that need access to reset lines should
-specify them as a reset phandle in their corresponding node as
-specified in reset.txt.
-
-For list of all valid reset indices for Zynq UltraScale+ MPSoC see
-<dt-bindings/reset/xlnx-zynqmp-resets.h>
-For list of all valid reset indices for Versal see
-<dt-bindings/reset/xlnx-versal-resets.h>
-
-Example:
-
-serdes: zynqmp_phy@...00000 {
- ...
-
- resets = <&zynqmp_reset ZYNQMP_RESET_SATA>;
- reset-names = "sata_rst";
-
- ...
-};
diff --git a/Documentation/devicetree/bindings/reset/xlnx,zynqmp-reset.yaml b/Documentation/devicetree/bindings/reset/xlnx,zynqmp-reset.yaml
new file mode 100644
index 000000000000..a39b17599e05
--- /dev/null
+++ b/Documentation/devicetree/bindings/reset/xlnx,zynqmp-reset.yaml
@@ -0,0 +1,64 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/reset/xlnx,zynqmp-reset.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Zynq UltraScale+ MPSoC and Versal reset binding
+
+maintainers:
+ - Piyush Mehta <piyush.mehta@....com>
+
+description: |
+ The Zynq UltraScale+ MPSoC and Versal has several different resets.
+
+ The PS reset subsystem is responsible for handling the external reset
+ input to the device and that all internal reset requirements are met
+ for the system (as a whole) and for the functional units.
+
+ Please also refer to reset.txt in this directory for common reset
+ controller binding usage. Device nodes that need access to reset
+ lines should specify them as a reset phandle in their corresponding
+ node as specified in reset.txt.
+
+ For list of all valid reset indices for Zynq UltraScale+ MPSoC
+ <dt-bindings/reset/xlnx-zynqmp-resets.h>
+
+ For list of all valid reset indices for Versal
+ <dt-bindings/reset/xlnx-versal-resets.h>
+
+properties:
+ compatible:
+ enum:
+ - xlnx,zynqmp-reset
+ - xlnx,versal-reset
+
+ "#reset-cells":
+ const: 1
+
+required:
+ - compatible
+ - "#reset-cells"
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/reset/xlnx-zynqmp-resets.h>
+
+ firmware {
+ zynqmp_firmware: zynqmp-firmware {
+ zynqmp_reset: reset-controller {
+ compatible = "xlnx,zynqmp-reset";
+ #reset-cells = <1>;
+ };
+ };
+ };
+
+ /* Specifying sata reset control of devices */
+ sata {
+ resets = <&zynqmp_reset ZYNQMP_RESET_SATA>;
+ reset-names = "sata_rst";
+ };
+
+...
--
2.25.1
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