Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 68 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml b/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml
new file mode 100644
index 000000000..312d8fee9
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml
@@ -0,0 +1,68 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/spi-fsl-lpspi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale Low Power SPI (LPSPI) for i.MX
+
+maintainers:
+  - Anson Huang <Anson.Huang@nxp.com>
+
+allOf:
+  - $ref: "/schemas/spi/spi-controller.yaml#"
+
+properties:
+  compatible:
+    enum:
+      - fsl,imx7ulp-spi
+      - fsl,imx8qxp-spi
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: SoC SPI per clock
+      - description: SoC SPI ipg clock
+
+  clock-names:
+    items:
+      - const: per
+      - const: ipg
+
+  fsl,spi-only-use-cs1-sel:
+    description:
+      spi common code does not support use of CS signals discontinuously.
+      i.MX8DXL-EVK board only uses CS1 without using CS0. Therefore, add
+      this property to re-config the chipselect value in the LPSPI driver.
+    type: boolean
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/imx7ulp-clock.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    spi@40290000 {
+        compatible = "fsl,imx7ulp-spi";
+        reg = <0x40290000 0x10000>;
+        interrupt-parent = <&intc>;
+        interrupts = <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&clks IMX7ULP_CLK_LPSPI2>,
+                 <&clks IMX7ULP_CLK_DUMMY>;
+        clock-names = "per", "ipg";
+        spi-slave;
+        fsl,spi-only-use-cs1-sel;
+    };