linux-kernel - [PATCH v2] dt-bindings: soc: xilinx: Add support for K26 rev2 SOMs

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Date: Fri, 12 Jan 2024 10:20:29 +0100
From: Michal Simek <michal.simek@....com>
To: <linux-kernel@...r.kernel.org>, <monstr@...str.eu>,
	<michal.simek@...inx.com>, <git@...inx.com>
CC: 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>
Subject: [PATCH v2] dt-bindings: soc: xilinx: Add support for K26 rev2 SOMs

Revision 2 is SW compatible with revision 1 but it is necessary to reflect
it in model and compatible properties which are parsed by user space.
Rev 2 has improved a power on boot reset and MIO34 shutdown glich
improvement done via an additional filter in the GreenPak chip.

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

Changes in v2:
- Support older combinations

I want to support all versions we created:
All of them:
-rev2, -rev1, -revB, -revA, "xlnx,zynqmp-smk-k26", "xlnx,zynqmp"

rev1:
-rev1, -revB, -revA, "xlnx,zynqmp-smk-k26", "xlnx,zynqmp"

revB:
-revB, -revA, "xlnx,zynqmp-smk-k26", "xlnx,zynqmp"

revA:
-revA, "xlnx,zynqmp-smk-k26", "xlnx,zynqmp"

And also single one are permitted:
-revB, "xlnx,zynqmp-smk-k26", "xlnx,zynqmp"
-rev1, "xlnx,zynqmp-smk-k26", "xlnx,zynqmp"
-rev2, "xlnx,zynqmp-smk-k26", "xlnx,zynqmp"

I didn't find a way to pretty much all the time force that there must be
both "xlnx,zynqmp-smk-k26", "xlnx,zynqmp" that's why there is only
requested to have xlnx,zynqmp. If you find a way how to encode it please
let me know.

---
 .../bindings/soc/xilinx/xilinx.yaml           | 32 +++++++++++++------
 1 file changed, 22 insertions(+), 10 deletions(-)

diff --git a/Documentation/devicetree/bindings/soc/xilinx/xilinx.yaml b/Documentation/devicetree/bindings/soc/xilinx/xilinx.yaml
index d4c0fe1fe435..39242efeec47 100644
--- a/Documentation/devicetree/bindings/soc/xilinx/xilinx.yaml
+++ b/Documentation/devicetree/bindings/soc/xilinx/xilinx.yaml
@@ -117,20 +117,32 @@ properties:
           - const: xlnx,zynqmp
 
       - description: Xilinx Kria SOMs
+        additionalItems: true
+        maxItems: 6
+        minItems: 3
         items:
-          - const: xlnx,zynqmp-sm-k26-rev1
-          - const: xlnx,zynqmp-sm-k26-revB
-          - const: xlnx,zynqmp-sm-k26-revA
-          - const: xlnx,zynqmp-sm-k26
-          - const: xlnx,zynqmp
+          - enum:
+              - xlnx,zynqmp-sm-k26-rev2
+              - xlnx,zynqmp-sm-k26-rev1
+              - xlnx,zynqmp-sm-k26-revB
+              - xlnx,zynqmp-sm-k26-revA
+              - xlnx,zynqmp-sm-k26
+        contains:
+          const: xlnx,zynqmp
 
       - description: Xilinx Kria SOMs (starter)
+        additionalItems: true
+        maxItems: 6
+        minItems: 3
         items:
-          - const: xlnx,zynqmp-smk-k26-rev1
-          - const: xlnx,zynqmp-smk-k26-revB
-          - const: xlnx,zynqmp-smk-k26-revA
-          - const: xlnx,zynqmp-smk-k26
-          - const: xlnx,zynqmp
+          - enum:
+              - xlnx,zynqmp-smk-k26-rev2
+              - xlnx,zynqmp-smk-k26-rev1
+              - xlnx,zynqmp-smk-k26-revB
+              - xlnx,zynqmp-smk-k26-revA
+              - xlnx,zynqmp-smk-k26
+        contains:
+          const: xlnx,zynqmp
 
       - description: AMD MicroBlaze V (QEMU)
         items:
-- 
2.36.1