[PATCH 12/14] dt-bindings: spi: dspi: Add S32G support

[James Clark]

From: Ciprian Marian Costea <ciprianmarian.costea at nxp.com>

Document S32G compatible strings. 's32g2' and 's32g3' use the same
driver so 's32g2' must follow 's32g3'.

The SPI controller node in dts can define both host and target pinctrl.
The selection between them will be done based on pinctrl-names. The
default pinctrl will be loaded first and will be used by the host. If
the controller is configured as target (spi-slave property is added in
the dts node), the driver will look for the "slave" pinctrl and apply it
if found.

Signed-off-by: Ciprian Marian Costea <ciprianmarian.costea at nxp.com>
Signed-off-by: Larisa Grigore <larisa.grigore at nxp.com>
Signed-off-by: James Clark <james.clark at linaro.org>
---
 Documentation/devicetree/bindings/spi/fsl,dspi.yaml | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/Documentation/devicetree/bindings/spi/fsl,dspi.yaml b/Documentation/devicetree/bindings/spi/fsl,dspi.yaml
index 7ca8fceda717..b5fac0bb142a 100644
--- a/Documentation/devicetree/bindings/spi/fsl,dspi.yaml
+++ b/Documentation/devicetree/bindings/spi/fsl,dspi.yaml
@@ -23,6 +23,7 @@ properties:
           - fsl,ls2080a-dspi
           - fsl,ls2085a-dspi
           - fsl,lx2160a-dspi
+          - nxp,s32g2-dspi
       - items:
           - enum:
               - fsl,ls1012a-dspi
@@ -37,6 +38,9 @@ properties:
       - items:
           - const: fsl,lx2160a-dspi
           - const: fsl,ls2085a-dspi
+      - items:
+          - const: nxp,s32g3-dspi
+          - const: nxp,s32g2-dspi
 
   reg:
     maxItems: 1
@@ -114,3 +118,17 @@ examples:
                 spi-cs-hold-delay-ns = <50>;
         };
     };
+  # S32G3 in target mode
+  - |
+    spi0: spi at 401d4000 {
+        compatible = "nxp,s32g3-dspi", "nxp,s32g2-dspi";
+        reg = <0x401d4000 0x1000>;
+        interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&clks 26>;
+        clock-names = "dspi";
+        spi-num-chipselects = <8>;
+        bus-num = <0>;
+        dmas = <&edma0 0 7>, <&edma0 0 8>;
+        dma-names = "tx", "rx";
+        spi-slave;
+    };

-- 
2.34.1