linux-kernel - [PATCH v1 2/2] arm64: dts: xilinx: add soc-specific spi compatibles for zynqmp/versal-net

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Message-ID: <20251001-cheesy-shucking-c55431bbcae3@spud>
Date: Wed,  1 Oct 2025 19:31:13 +0100
From: Conor Dooley <conor@...nel.org>
To: linux-spi@...r.kernel.org
Cc: conor@...nel.org,
	Conor Dooley <conor.dooley@...rochip.com>,
	Jun Guo <Jun.Guo@...tech.com>,
	Mark Brown <broonie@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Michal Simek <michal.simek@....com>,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v1 2/2] arm64: dts: xilinx: add soc-specific spi compatibles for zynqmp/versal-net

From: Conor Dooley <conor.dooley@...rochip.com>

Unlike zynq, which has a specific compatible for the Cadence spi
controller, zynqmp and versal-net do not have specific compatibles.
In order to "encourage" people to use soc-specific compatibles for new
devices using this IP, add specific compatibles for these devices, with
a fallback to the existing compatible for the r1p6 version of the IP so
that there will be no functional change.

Signed-off-by: Conor Dooley <conor.dooley@...rochip.com>
---
CC: Jun Guo <Jun.Guo@...tech.com>
CC: Mark Brown <broonie@...nel.org>
CC: Rob Herring <robh@...nel.org>
CC: Krzysztof Kozlowski <krzk+dt@...nel.org>
CC: Conor Dooley <conor+dt@...nel.org>
CC: Michal Simek <michal.simek@....com>
CC: linux-spi@...r.kernel.org
CC: devicetree@...r.kernel.org
CC: linux-kernel@...r.kernel.org
CC: linux-arm-kernel@...ts.infradead.org
---
 arch/arm64/boot/dts/xilinx/versal-net.dtsi | 4 ++--
 arch/arm64/boot/dts/xilinx/zynqmp.dtsi     | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/xilinx/versal-net.dtsi b/arch/arm64/boot/dts/xilinx/versal-net.dtsi
index fc9f49e57385..38af1a4e34f7 100644
--- a/arch/arm64/boot/dts/xilinx/versal-net.dtsi
+++ b/arch/arm64/boot/dts/xilinx/versal-net.dtsi
@@ -610,7 +610,7 @@ smmu: iommu@...00000 {
 		};
 
 		spi0: spi@...60000 {
-			compatible = "cdns,spi-r1p6";
+			compatible = "xlnx,versal-net-spi-r1p6", "cdns,spi-r1p6";
 			status = "disabled";
 			interrupts = <0 23 4>;
 			reg = <0 0xf1960000 0 0x1000>;
@@ -618,7 +618,7 @@ spi0: spi@...60000 {
 		};
 
 		spi1: spi@...70000 {
-			compatible = "cdns,spi-r1p6";
+			compatible = "xlnx,versal-net-spi-r1p6", "cdns,spi-r1p6";
 			status = "disabled";
 			interrupts = <0 24 4>;
 			reg = <0 0xf1970000 0 0x1000>;
diff --git a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
index e11d282462bd..89c565bef274 100644
--- a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
+++ b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
@@ -1076,7 +1076,7 @@ smmu: iommu@...00000 {
 		};
 
 		spi0: spi@...40000 {
-			compatible = "cdns,spi-r1p6";
+			compatible = "xlnx,zynqmp-spi-r1p6", "cdns,spi-r1p6";
 			status = "disabled";
 			interrupt-parent = <&gic>;
 			interrupts = <GIC_SPI 19 IRQ_TYPE_LEVEL_HIGH>;
@@ -1088,7 +1088,7 @@ spi0: spi@...40000 {
 		};
 
 		spi1: spi@...50000 {
-			compatible = "cdns,spi-r1p6";
+			compatible = "xlnx,zynqmp-spi-r1p6", "cdns,spi-r1p6";
 			status = "disabled";
 			interrupt-parent = <&gic>;
 			interrupts = <GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH>;
-- 
2.47.3