[PATCH v4 1/2] dt-bindings: spi: Document imx94 xspi

Haibo Chen
2025-11-19T10:43:16Z

Document imx94 xspi that supports interface to serial flash
supporting following features:

- Single-bit SPI, Dual SPI, Quad SPI and Octal SPI.
- Single Data Rate or Double Data Rate modes.
- Direct memory mapping of all AHB memory accesses to the
chip system memory space.
- Multi-master AHB accesses with priority.

Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
---
.../devicetree/bindings/spi/nxp,imx94-xspi.yaml | 88 ++++++++++++++++++++++
MAINTAINERS | 8 ++
2 files changed, 96 insertions(+)

diff --git a/Documentation/devicetree/bindings/spi/nxp,imx94-xspi.yaml b/Documentation/devicetree/bindings/spi/nxp,imx94-xspi.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..a0f4b162c85855c55d06c6ea1a2417af5121fab2
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/nxp,imx94-xspi.yaml
@@ -0,0 +1,88 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/nxp,imx94-xspi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP External Serial Peripheral Interface (xSPI)
+
+maintainers:
+ - Haibo Chen <haibo.chen@nxp.com>
+ - Han Xu <han.xu@nxp.com>
+
+properties:
+ compatible:
+ oneOf:
+ - enum:
+ - nxp,imx94-xspi
+
+ reg:
+ items:
+ - description: registers address space
+ - description: memory mapped address space
+
+ reg-names:
+ items:
+ - const: base
+ - const: mmap
+
+ interrupts:
+ items:
+ - description: interrupt for EENV0
+ - description: interrupt for EENV1
+ - description: interrupt for EENV2
+ - description: interrupt for EENV3
+ - description: interrupt for EENV4
+
+ clocks:
+ items:
+ - description: SPI serial clock
+
+ clock-names:
+ items:
+ - const: per
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - interrupts
+ - clocks
+ - clock-names
+
+allOf:
+ - $ref: spi-controller.yaml#
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ soc {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ spi@42b90000 {
+ compatible = "nxp,imx94-xspi";
+ reg = <0x0 0x42b90000 0x0 0x50000>, <0x0 0x28000000 0x0 0x08000000>;
+ reg-names = "base", "mmap";
+ interrupts = <GIC_SPI 390 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 391 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 392 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 393 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 394 IRQ_TYPE_LEVEL_HIGH>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ clocks = <&scmi_1>;
+ clock-names = "per";
+
+ flash@0 {
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+ spi-max-frequency = <200000000>;
+ spi-rx-bus-width = <8>;
+ spi-tx-bus-width = <8>;
+ };
+ };
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 59b145dde215f7a2bd01867ffaf4d621eb0f901e..ecda64e8087de3704315c1cd39720ee2c9399b9e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -18869,6 +18869,14 @@ S: Maintained
F: Documentation/devicetree/bindings/sound/trivial-codec.yaml
F: sound/soc/codecs/tfa9879*

+NXP XSPI DRIVER
+M: Han Xu <han.xu@nxp.com>
+M: Haibo Chen <haibo.chen@nxp.com>
+L: linux-spi@vger.kernel.org
+L: imx@lists.linux.dev
+S: Maintained
+F: Documentation/devicetree/bindings/spi/nxp,imx94-xspi.yaml
+
NXP-NCI NFC DRIVER
S: Orphan
F: Documentation/devicetree/bindings/net/nfc/nxp,nci.yaml

--
2.34.1