Bone i2c

src/arm/BONE-I2C1.dts

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+/*
+ * Copyright (C) 2020 Deepak Khatri <[email protected]>
+ *
+ * Virtual cape for /bone/i2c/1 
+ *
+ * Note: This can not be used along with BONE-I2C3-00A0 on BBB as 
+ * both uses i2c1 internally and only one can be used at a time.
+ *
+ * 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-I2C1 = __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_18_pinmux { pinctrl-0 = <&P9_18_i2c_pin>; }; /* i2c sda */
+    P9_17_pinmux { pinctrl-0 = <&P9_17_i2c_pin>; }; /* i2c scl */
+};
+
+/*
+ * 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_i2c_1 {
+    status = "okay";
+};

src/arm/BONE-I2C2.dts

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+/*
+ * Copyright (C) 2020 Deepak Khatri <[email protected]>
+ *
+ * Virtual cape for /bone/i2c/2
+ *
+ * Note: This can not be used along with BONE-I2C2A-00A0 on BBB as 
+ * both uses i2c2 internally and only one can be used at a time.
+ *
+ * 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-I2C2 = __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_20_pinmux { pinctrl-0 = <&P9_20_i2c_pin>; }; /* i2c sda */
+    P9_19_pinmux { pinctrl-0 = <&P9_19_i2c_pin>; }; /* i2c scl */
+};
+
+/*
+ * 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_i2c_2 {
+    status = "okay";
+};

src/arm/BONE-I2C2A.dts

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+/*
+ * Copyright (C) 2020 Deepak Khatri <[email protected]>
+ *
+ * Virtual cape for /bone/i2c/2a (only on BBB)
+ *
+ * Note: This can not be used along with BONE-I2C2-00A0 on BBB as 
+ * both uses i2c2 internally and only one can be used at a time.
+ *
+ * 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-I2C2A = __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_22_pinmux { pinctrl-0 = <&P9_22_i2c_pin>; }; /* i2c sda */
+    P9_21_pinmux { pinctrl-0 = <&P9_21_i2c_pin>; }; /* i2c scl */
+};
+
+/*
+ * 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_i2c_2a {
+    status = "okay";
+};

src/arm/BONE-I2C3.dts

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+/*
+ * Copyright (C) 2020 Deepak Khatri <[email protected]>
+ *
+ * Virtual cape for /bone/i2c/3
+ *
+ * Note: This can not be used along with BONE-I2C1-00A0 on BBB as 
+ * both uses i2c1 internally and only one can be used at a time.
+ *
+ * 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-I2C3 = __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_26_pinmux { pinctrl-0 = <&P9_26_i2c_pin>;};  /* i2c sda */
+    P9_24_pinmux { pinctrl-0 = <&P9_24_i2c_pin>;};  /* i2c scl */
+};
+
+/*
+ * 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_i2c_3 {
+    status = "okay";
+};