Adding upstream version 4.19.249.upstream/4.19.249

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

1 files changed, 23 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/spi/spi-sun4i.txt b/Documentation/devicetree/bindings/spi/spi-sun4i.txt
new file mode 100644
index 000000000..c75d604a8
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/spi-sun4i.txt
@@ -0,0 +1,23 @@
+Allwinner A10 SPI controller
+
+Required properties:
+- compatible: Should be "allwinner,sun4-a10-spi".
+- reg: Should contain register location and length.
+- interrupts: Should contain interrupt.
+- clocks: phandle to the clocks feeding the SPI controller. Two are
+          needed:
+  - "ahb": the gated AHB parent clock
+  - "mod": the parent module clock
+- clock-names: Must contain the clock names described just above
+
+Example:
+
+spi1: spi@1c06000 {
+	compatible = "allwinner,sun4i-a10-spi";
+	reg = <0x01c06000 0x1000>;
+	interrupts = <11>;
+	clocks = <&ahb_gates 21>, <&spi1_clk>;
+	clock-names = "ahb", "mod";
+	#address-cells = <1>;
+	#size-cells = <0>;
+};