Bone spi

src/arm/BONE-SPI0_0.dts

@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2020 Deepak Khatri <[email protected]>
+ *
+ * Virtual cape for /dev/bone/spi/0.0
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/dts-v1/;
+/plugin/;
+
+/*
+* Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+*/
+&{/chosen} {
+    overlays {
+        BONE-SPI0_0 = __TIMESTAMP__;
+    };
+};
+
+/*
+ * Update the default pinmux of the pins.
+ * See these files for the phandles (&P9_* & &P8_*)
+ * https://github.com/lorforlinux/BeagleBoard-DeviceTrees/blob/compatibility/src/arm/am335x-bone-common-univ.dtsi
+ * https://github.com/lorforlinux/BeagleBoard-DeviceTrees/blob/compatibility/src/arm/am572x-bone-common-univ.dtsi
+ */
+&ocp {
+    P9_17_pinmux { pinctrl-0 = <&P9_17_spi_cs_pin>; }; /* CS*/
+    P9_18_pinmux { pinctrl-0 = <&P9_18_spi_pin>; }; /* MOSI */
+    P9_21_pinmux { pinctrl-0 = <&P9_21_spi_pin>; }; /* MISO */
+    P9_22_pinmux { pinctrl-0 = <&P9_22_spi_sclk_pin>; }; /* CLK */
+};
+
+/*
+ * See these files for the phandles (&bone_*) and other bone bus nodes
+ * https://github.com/lorforlinux/BeagleBoard-DeviceTrees/blob/compatibility/src/arm/bbai-bone-buses.dtsi
+ * https://github.com/lorforlinux/BeagleBoard-DeviceTrees/blob/compatibility/src/arm/bbb-bone-buses.dtsi
+ */
+&bone_spi_0 {
+	status = "okay";
+
+	channel@0 {
+		reg = <0>;
+		compatible = "spidev";
+		symlink = "bone/spi/0.0";
+		spi-max-frequency = <16000000>;
+        spi-cpha;
+	};
+};

src/arm/BONE-SPI1_0.dts

@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2020 Deepak Khatri <[email protected]>
+ *
+ * Virtual cape for /dev/bone/spi/1.0
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/dts-v1/;
+/plugin/;
+
+/*
+* Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+*/
+&{/chosen} {
+    overlays {
+        BONE-SPI1_0 = __TIMESTAMP__;
+    };
+};
+
+/*
+ * Update the default pinmux of the pins.
+ * See these files for the phandles (&P9_* & &P8_*)
+ * https://github.com/lorforlinux/BeagleBoard-DeviceTrees/blob/compatibility/src/arm/am335x-bone-common-univ.dtsi
+ * https://github.com/lorforlinux/BeagleBoard-DeviceTrees/blob/compatibility/src/arm/am572x-bone-common-univ.dtsi
+ */
+&ocp {
+    P9_28_pinmux { pinctrl-0 = <&P9_28_spi_cs_pin>; }; /* CS */
+    P9_30_pinmux { pinctrl-0 = <&P9_30_spi_pin>; }; /* MOSI */
+    P9_29_pinmux { pinctrl-0 = <&P9_29_spi_pin>; }; /* MISO */
+    P9_31_pinmux { pinctrl-0 = <&P9_31_spi_sclk_pin>; }; /* CLK */
+};
+
+/*
+ * See these files for the phandles (&bone_*) and other bone bus nodes
+ * https://github.com/lorforlinux/BeagleBoard-DeviceTrees/blob/compatibility/src/arm/bbai-bone-buses.dtsi
+ * https://github.com/lorforlinux/BeagleBoard-DeviceTrees/blob/compatibility/src/arm/bbb-bone-buses.dtsi
+ */
+&bone_spi_1 {
+	status = "okay";
+
+	channel@0 {
+		reg = <0>;
+		compatible = "spidev";
+		symlink = "bone/spi/1.0";
+		spi-max-frequency = <16000000>;
+        spi-cpha;
+	};
+};

src/arm/BONE-SPI1_1.dts

@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2020 Deepak Khatri <[email protected]>
+ *
+ * Virtual cape for /dev/bone/spi/1.1
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/dts-v1/;
+/plugin/;
+
+/*
+* Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+*/
+&{/chosen} {
+    overlays {
+        BONE-SPI1_1 = __TIMESTAMP__;
+    };
+};
+
+/*
+ * Update the default pinmux of the pins.
+ * See these files for the phandles (&P9_* & &P8_*)
+ * https://github.com/lorforlinux/BeagleBoard-DeviceTrees/blob/compatibility/src/arm/am335x-bone-common-univ.dtsi
+ * https://github.com/lorforlinux/BeagleBoard-DeviceTrees/blob/compatibility/src/arm/am572x-bone-common-univ.dtsi
+ */
+&ocp {
+	P9_42_pinmux { pinctrl-0 = <&P9_42_spi_cs_pin>; }; /* CS */
+    P9_30_pinmux { pinctrl-0 = <&P9_30_spi_pin>; }; /* MOSI */
+    P9_29_pinmux { pinctrl-0 = <&P9_29_spi_pin>; };	/* MISO */
+    P9_31_pinmux { pinctrl-0 = <&P9_31_spi_sclk_pin>; }; /* CLK */
+};
+
+/*
+ * See these files for the phandles (&bone_*) and other bone bus nodes
+ * https://github.com/lorforlinux/BeagleBoard-DeviceTrees/blob/compatibility/src/arm/bbai-bone-buses.dtsi
+ * https://github.com/lorforlinux/BeagleBoard-DeviceTrees/blob/compatibility/src/arm/bbb-bone-buses.dtsi
+ */
+&bone_spi_1 {
+	status = "okay";
+
+	channel@1 {
+		reg = <1>;
+		compatible = "spidev";
+		symlink = "bone/spi/1.1";
+		spi-max-frequency = <16000000>;
+        spi-cpha;
+	};
+};