linux-kernel - [PATCH v5 1/4] spi: dt-bindings: cdns,qspi-nor: Add Renesas RZ/N1D400 to the list

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Message-Id: <20260205-schneider-6-19-rc1-qspi-v5-1-843632b3c674@bootlin.com>
Date: Thu, 05 Feb 2026 19:09:48 +0100
From: "Miquel Raynal (Schneider Electric)" <miquel.raynal@...tlin.com>
To: Mark Brown <broonie@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Geert Uytterhoeven <geert+renesas@...der.be>, 
 Magnus Damm <magnus.damm@...il.com>, Vaishnav Achath <vaishnav.a@...com>
Cc: Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 Hervé Codina <herve.codina@...tlin.com>, 
 Wolfram Sang <wsa+renesas@...g-engineering.com>, 
 Vignesh Raghavendra <vigneshr@...com>, Santhosh Kumar K <s-k6@...com>, 
 Pratyush Yadav <pratyush@...nel.org>, 
 Pascal Eberhard <pascal.eberhard@...com>, linux-spi@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-renesas-soc@...r.kernel.org, 
 "Miquel Raynal (Schneider Electric)" <miquel.raynal@...tlin.com>
Subject: [PATCH v5 1/4] spi: dt-bindings: cdns,qspi-nor: Add Renesas
 RZ/N1D400 to the list

Add support for the Renesas RZ/N1D400 QSPI controller.

This SoC is identified in the bindings with its other name: r9a06g032.
It is part of the RZ/N1 family, which contains a "D" and a "S"
variant. IPs in this SoC are typically described using 2 compatibles:
the SoC specific compatible and the family compatible. The original
Cadence IP compatible is dropped because it is unusable on its own.

Indirect accesses are not supported by this flavour of the Cadence IP,
which means several properties have no meaning in the scope of the
Renesas compatible. Let's make sure they are no longer expected nor
mandatory.

Tested-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
Reviewed-by: Rob Herring (Arm) <robh@...nel.org>
Signed-off-by: Miquel Raynal (Schneider Electric) <miquel.raynal@...tlin.com>
---
 .../devicetree/bindings/spi/cdns,qspi-nor.yaml        | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/spi/cdns,qspi-nor.yaml b/Documentation/devicetree/bindings/spi/cdns,qspi-nor.yaml
index 0d47bd94d67e..891f578b5ac4 100644
--- a/Documentation/devicetree/bindings/spi/cdns,qspi-nor.yaml
+++ b/Documentation/devicetree/bindings/spi/cdns,qspi-nor.yaml
@@ -61,6 +61,20 @@ allOf:
         cdns,fifo-depth:
           enum: [ 128, 256 ]
           default: 128
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: renesas,rzn1-qspi
+    then:
+      properties:
+        cdns,trigger-address: false
+        cdns,fifo-depth: false
+        cdns,fifo-width: false
+    else:
+      required:
+        - cdns,trigger-address
+        - cdns,fifo-depth
 
 properties:
   compatible:
@@ -80,6 +94,9 @@ properties:
           # controllers are meant to be used with flashes of all kinds,
           # ie. also NAND flashes, not only NOR flashes.
           - const: cdns,qspi-nor
+      - items:
+          - const: renesas,r9a06g032-qspi
+          - const: renesas,rzn1-qspi
       - const: cdns,qspi-nor
         deprecated: true
 
@@ -163,8 +180,6 @@ required:
   - reg
   - interrupts
   - clocks
-  - cdns,fifo-width
-  - cdns,trigger-address
   - '#address-cells'
   - '#size-cells'
 

-- 
2.51.1