linux-kernel - [PATCH v3] dt-bindings: rtc: zynqmp: Add support for Versal/Versal NET SoCs

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Message-ID: <5ecd775e6083f86aa744c4e9dfb7f6a13082c78a.1709804617.git.michal.simek@amd.com>
Date: Thu, 7 Mar 2024 10:43:46 +0100
From: Michal Simek <michal.simek@....com>
To: <linux-kernel@...r.kernel.org>, <monstr@...str.eu>,
	<michal.simek@...inx.com>, <git@...inx.com>
CC: Alexandre Belloni <alexandre.belloni@...tlin.com>, Conor Dooley
	<conor+dt@...nel.org>, Krzysztof Kozlowski
	<krzysztof.kozlowski+dt@...aro.org>, Rob Herring <robh+dt@...nel.org>, "open
 list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
	<devicetree@...r.kernel.org>, "moderated list:ARM/ZYNQ ARCHITECTURE"
	<linux-arm-kernel@...ts.infradead.org>, "open list:REAL TIME CLOCK (RTC)
 SUBSYSTEM" <linux-rtc@...r.kernel.org>
Subject: [PATCH v3] dt-bindings: rtc: zynqmp: Add support for Versal/Versal NET SoCs

Add support for Versal and Versal NET SoCs. Both of them should use the
same IP core but differences can be in integration part that's why create
separate compatible strings.

Also describe optional power-domains property. It is optional because power
domain doesn't need to be onwed by non secure firmware hence no access to
control it via any driver.

Signed-off-by: Michal Simek <michal.simek@....com>
---

Changes in v3:
- make versal/versal-net fallback to zynqmp

Changes in v2:
- Change subject
- Add compatible string for versal and versal NET
- Update commit message to reflect why power domain is optional.

 .../devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml      | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml b/Documentation/devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml
index d1f5eb996dba..01cc90fee81e 100644
--- a/Documentation/devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml
+++ b/Documentation/devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml
@@ -18,7 +18,13 @@ allOf:
 
 properties:
   compatible:
-    const: xlnx,zynqmp-rtc
+    oneOf:
+      - const: xlnx,zynqmp-rtc
+      - items:
+          - enum:
+              - xlnx,versal-rtc
+              - xlnx,versal-net-rtc
+          - const: xlnx,zynqmp-rtc
 
   reg:
     maxItems: 1
@@ -48,6 +54,9 @@ properties:
     default: 0x198233
     deprecated: true
 
+  power-domains:
+    maxItems: 1
+
 required:
   - compatible
   - reg
-- 
2.36.1