--- zzzz-none-000/linux-3.10.107/Documentation/devicetree/bindings/spi/spi-samsung.txt	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/Documentation/devicetree/bindings/spi/spi-samsung.txt	2021-02-04 17:41:59.000000000 +0000
@@ -8,9 +8,8 @@
 - compatible: should be one of the following.
     - samsung,s3c2443-spi: for s3c2443, s3c2416 and s3c2450 platforms
     - samsung,s3c6410-spi: for s3c6410 platforms
-    - samsung,s5p6440-spi: for s5p6440 and s5p6450 platforms
     - samsung,s5pv210-spi: for s5pv210 and s5pc110 platforms
-    - samsung,exynos4210-spi: for exynos4 and exynos5 platforms
+    - samsung,exynos7-spi: for exynos7 platforms
 
 - reg: physical base address of the controller and length of memory mapped
   region.
@@ -18,14 +17,11 @@
 - interrupts: The interrupt number to the cpu. The interrupt specifier format
   depends on the interrupt controller.
 
-[PRELIMINARY: the dma channel allocation will change once there are
-official DMA bindings]
+- dmas : Two or more DMA channel specifiers following the convention outlined
+  in bindings/dma/dma.txt
 
-- tx-dma-channel: The dma channel specifier for tx operations. The format of
-  the dma specifier depends on the dma controller.
-
-- rx-dma-channel: The dma channel specifier for rx operations. The format of
-  the dma specifier depends on the dma controller.
+- dma-names: Names for the dma channels. There must be at least one channel
+  named "tx" for transmit and named "rx" for receive.
 
 Required Board Specific Properties:
 
@@ -42,15 +38,13 @@
 - num-cs: Specifies the number of chip select lines supported. If
   not specified, the default number of chip select lines is set to 1.
 
+- cs-gpios: should specify GPIOs used for chipselects (see spi-bus.txt)
+
 SPI Controller specific data in SPI slave nodes:
 
 - The spi slave nodes should provide the following information which is required
   by the spi controller.
 
-  - cs-gpio: A gpio specifier that specifies the gpio line used as
-    the slave select line by the spi controller. The format of the gpio
-    specifier depends on the gpio controller.
-
   - samsung,spi-feedback-delay: The sampling phase shift to be applied on the
     miso line (to account for any lag in the miso line). The following are the
     valid values.
@@ -74,8 +68,11 @@
 		compatible = "samsung,exynos4210-spi";
 		reg = <0x12d20000 0x100>;
 		interrupts = <0 66 0>;
-		tx-dma-channel = <&pdma0 5>;
-		rx-dma-channel = <&pdma0 4>;
+		dmas = <&pdma0 5
+			&pdma0 4>;
+		dma-names = "tx", "rx";
+		#address-cells = <1>;
+		#size-cells = <0>;
 	};
 
 - Board Specific Portion:
@@ -85,6 +82,7 @@
 		#size-cells = <0>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&spi0_bus>;
+		cs-gpios = <&gpa2 5 0>;
 
 		w25q80bw@0 {
 			#address-cells = <1>;
@@ -94,7 +92,6 @@
 			spi-max-frequency = <10000>;
 
 			controller-data {
-				cs-gpio = <&gpa2 5 1 0 3>;
 				samsung,spi-feedback-delay = <0>;
 			};