Differences

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--- en:xu3_expansionboard [2016/05/18 18:11]
odroid [SPI Flash Control on Expansion Board]
+++ en:xu3_expansionboard [2017/06/07 17:46] (current)
odroid
@@ Line 33: / Line 33: @@
 ==== SPI Flash Control on Expansion Board ====
-To use spidev on your **ODROID-XU4/XU3** you must edit/compile the device-tree source first.
-=== How to fix device tree blob with command line ===
-Install device tree compiler package.
-  sudo apt-get install device-tree-compiler
-Generate an exynos5422-odroidxu3.dts file from the stock dtb file.
-<code>
-sudo -s
-cd /media/boot
-dtc -I dtb -O dts ./exynos5422-odroidxu3.dtb > ./exynos5422-odroidxu3.dts
-</code>
-Edit dts file to use vi editor.
-<code>
-vi ./exynos5422-odroidxu3.dts
-</code>
-Find string "spi@12d3" & add spi control data.
-<code>
-...
-	spi@12d30000 {
-		compatible = "samsung,exynos5410-spi";
-		reg = <0x12d30000 0x100>;
-		interrupts = <0x0 0x45 0x0>;
-		dma-mode;
-		dmas = <0x43 0x5 0x43 0x4>;
-		dma-names = "tx", "rx";
-		swap-mode;
-		#address-cells = <0x1>;
-		#size-cells = <0x0>;
-		clocks = <0x2 0x5cb 0x2 0x1027>;
-		clock-names = "spi", "spi_busclk0";
-		pinctrl-names = "default";
-		pinctrl-0 = <0x44>;
-		status = "okay";
-		cs-gpios = <0x45 0x5 0x0>;
-                /* ADD Line Start(spi control data) */
-		samsung,spi-src-slk = <0>;
-		num-cs = <0>;
-		spidev {
-			compatible = "spidev";
-			reg = <0>;
-			spi-max-frequency = <20000000>;
-			controller-data {
-				cs-gpio = <0x45 0x5 0x0>;
-				samsung,spi-feedback-delay = <0>;
-			};
-		};
-                /* ADD Line Ebd */
-	};
-...
-</code>
-<WRAP center round important 100%>
-The value of **cs-gpio** must be identical to **cs-gpios** in controller-data section.
-</WRAP>
-Compile dts file & update
-<code>
-dtc -O dtb -o ./exynos5422-odroidxu3.dtb ./exynos5422-odroidxu3.dts
-</code>
-Reboot.
-  reboot
-Check your SPI node.
-  ls /dev/spidev*
-After update, you might need a hard-boot. Reboot doesn't access the updated dtb file from time to time.
 === Compile & run SPI test example source code ===
@@ Line 516: / Line 442: @@
 </file>
+If you use an old kernel, you must edit/compile the device-tree source first to enable spidev on your **ODROID-XU4/XU3**
+=== How to fix device tree blob with command line ===
+Install device tree compiler package.
+  sudo apt-get install device-tree-compiler
+Generate an exynos5422-odroidxu3.dts file from the stock dtb file.
+<code>
+sudo -s
+cd /media/boot
+dtc -I dtb -O dts ./exynos5422-odroidxu3.dtb > ./exynos5422-odroidxu3.dts
+</code>
+Edit dts file to use vi editor.
+<code>
+vi ./exynos5422-odroidxu3.dts
+</code>
+Find string "spi@12d3" & add spi control data.
+<code>
+...
+	spi@12d30000 {
+		compatible = "samsung,exynos5410-spi";
+		reg = <0x12d30000 0x100>;
+		interrupts = <0x0 0x45 0x0>;
+		dma-mode;
+		dmas = <0x43 0x5 0x43 0x4>;
+		dma-names = "tx", "rx";
+		swap-mode;
+		#address-cells = <0x1>;
+		#size-cells = <0x0>;
+		clocks = <0x2 0x5cb 0x2 0x1027>;
+		clock-names = "spi", "spi_busclk0";
+		pinctrl-names = "default";
+		pinctrl-0 = <0x44>;
+		status = "okay";
+		cs-gpios = <0x45 0x5 0x0>;
+                /* ADD Line Start(spi control data) */
+		samsung,spi-src-slk = <0>;
+		num-cs = <0>;
+		spidev {
+			compatible = "spidev";
+			reg = <0>;
+			spi-max-frequency = <20000000>;
+			controller-data {
+				cs-gpio = <0x45 0x5 0x0>;
+				samsung,spi-feedback-delay = <0>;
+			};
+		};
+                /* ADD Line Ebd */
+	};
+...
+</code>
+<WRAP center round important 100%>
+The value of **cs-gpio** must be identical to **cs-gpios** in controller-data section.
+</WRAP>
+Compile dts file & update
+<code>
+dtc -O dtb -o ./exynos5422-odroidxu3.dtb ./exynos5422-odroidxu3.dts
+</code>
+Reboot.
+  reboot
+Check your SPI node.
+  ls /dev/spidev*
+After update, you might need a hard-boot. Reboot doesn't access the updated dtb file from time to time.