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--- hierarchical_device_files [2018/12/11 13:05] – created rpjday
+++ hierarchical_device_files [2018/12/11 13:08] (current) – [am335x-boneblack.dts] rpjday
@@ Line 8: / Line 8: @@
 <code>
-PREFERRED_PROVIDER_virtual/xserver ?= "xserver-xorg"
+...
-XSERVER ?= "xserver-xorg \
+KERNEL_IMAGETYPE = "zImage"
-           xf86-video-modesetting \
+KERNEL_DEVICETREE = "am335x-bone.dtb am335x-boneblack.dtb am335x-bonegreen.dtb"
-           "
+KERNEL_EXTRA_ARGS += "LOADADDR=${UBOOT_ENTRYPOINT}"
+...
+</code>
-MACHINE_EXTRA_RRECOMMENDS = "kernel-modules kernel-devicetree"
+===== The .dts files =====
-EXTRA_IMAGEDEPENDS += "u-boot"
+==== am335x-boneblack.dts ====
-DEFAULTTUNE ?= "cortexa8hf-neon"
+<code>
-include conf/machine/include/tune-cortexa8.inc
+#include "am33xx.dtsi"
+#include "am335x-bone-common.dtsi"
+#include "am335x-boneblack-common.dtsi"
-IMAGE_FSTYPES += "tar.bz2 jffs2 wic wic.bmap"
+/ {
-EXTRA_IMAGECMD_jffs2 = "-lnp "
+        model = "TI AM335x BeagleBone Black";
-WKS_FILE ?= "beaglebone-yocto.wks"
+        compatible = "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
-IMAGE_INSTALL_append = " kernel-devicetree kernel-image-zimage"
+};
-do_image_wic[depends] += "mtools-native:do_populate_sysroot dosfstools-native:do_populate_sysroot"
-SERIAL_CONSOLES = "115200;ttyO0"
+&cpu0_opp_table {
+        /*
+         * All PG 2.0 silicon may not support 1GHz but some of the early
+         * BeagleBone Blacks have PG 2.0 silicon which is guaranteed
+         * to support 1GHz OPP so enable it for PG 2.0 on this board.
+         */
+        oppnitro-1000000000 {
+                opp-supported-hw = <0x06 0x0100>;
+        };
+};
-PREFERRED_PROVIDER_virtual/kernel ?= "linux-yocto"
+</code>
-PREFERRED_VERSION_linux-yocto ?= "4.18%"
-KERNEL_IMAGETYPE = "zImage"
-KERNEL_DEVICETREE = "am335x-bone.dtb am335x-boneblack.dtb am335x-bonegreen.dtb"
-KERNEL_EXTRA_ARGS += "LOADADDR=${UBOOT_ENTRYPOINT}"
-SPL_BINARY = "MLO"
+==== am335x-bonegreen.dts ====
-UBOOT_SUFFIX = "img"
-UBOOT_MACHINE = "am335x_boneblack_config"
-UBOOT_ENTRYPOINT = "0x80008000"
-UBOOT_LOADADDRESS = "0x80008000"
-MACHINE_FEATURES = "usbgadget usbhost vfat alsa"
+<code>
+#include "am33xx.dtsi"
+#include "am335x-bone-common.dtsi"
+#include "am335x-bonegreen-common.dtsi"
-IMAGE_BOOT_FILES ?= "u-boot.${UBOOT_SUFFIX} MLO zImage am335x-bone.dtb am335x-boneblack.dtb am335x-bonegreen.dtb"
+/ {
+        model = "TI AM335x BeagleBone Green";
+        compatible = "ti,am335x-bone-green", "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+};
 </code>