Bone uart

src/arm/BONE-UART1.dts

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+/*
+ * Copyright (C) 2020 Deepak Khatri <[email protected]>
+ *
+ * Virtual cape for /dev/bone/uart/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-UART1 = __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_24_pinmux { pinctrl-0 = <&P9_24_uart_pin>; };    /* UART TX*/
+    P9_26_pinmux { pinctrl-0 = <&P9_26_uart_pin>; };    /* UART RX*/
+};
+
+/*
+ * 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_uart_1 {
+    status = "okay";
+};

src/arm/BONE-UART2.dts

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+/*
+ * Copyright (C) 2020 Deepak Khatri <[email protected]>
+ *
+ * Virtual cape for /dev/bone/uart/2
+ *
+ * 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-UART2 = __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_21_pinmux { pinctrl-0 = <&P9_21_uart_pin>; };    /* UART TX*/
+    P9_22_pinmux { pinctrl-0 = <&P9_22_uart_pin>; };    /* UART RX*/
+};
+
+/*
+ * 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_uart_2 {
+    status = "okay";
+};

src/arm/BONE-UART3.dts

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+/*
+ * Copyright (C) 2020 Deepak Khatri <[email protected]>
+ *
+ * Virtual cape for /dev/bone/uart/3 (only on BBB)
+ *
+ * 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-UART3 = __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_uart_pin>; };    /*UART TX*/
+};
+
+/*
+ * 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_uart_3 {
+    status = "okay";
+};

src/arm/BONE-UART4.dts

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+/*
+ * Copyright (C) 2020 Deepak Khatri <[email protected]>
+ *
+ * Virtual cape for /dev/bone/uart/4
+ *
+ * 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-UART4 = __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_13_pinmux { pinctrl-0 = <&P9_13_uart_pin>; };    /* UART TX*/
+    P9_11_pinmux { pinctrl-0 = <&P9_11_uart_pin>; };    /* UART RX*/
+};
+
+/*
+ * 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_uart_4 {
+    status = "okay";
+};

src/arm/BONE-UART5.dts

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+/*
+ * Copyright (C) 2020 Deepak Khatri <[email protected]>
+ *
+ * Virtual cape for /dev/bone/uart/5
+ *
+ * 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-UART5 = __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 {
+    P8_37_pinmux { pinctrl-0 = <&P8_37_uart_pin>; };    /* UART TX*/
+    P8_38_pinmux { pinctrl-0 = <&P8_38_uart_pin>; };    /* UART RX*/
+};
+
+/*
+ * 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_uart_5 {
+    status = "okay";
+};