The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)

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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/src/arm/omap3-beagle-ab4.dts

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    1 // SPDX-License-Identifier: GPL-2.0-only
    2 /dts-v1/;
    3 
    4 #include "omap3-beagle.dts"
    5 
    6 / {
    7         model = "TI OMAP3 BeagleBoard A to B4";
    8         compatible = "ti,omap3-beagle-ab4", "ti,omap3-beagle", "ti,omap3430", "ti,omap3";
    9 };
   10 
   11 /*
   12  * Workaround for capacitor C70 issue, see "Boards revision A and < B5"
   13  * section at https://elinux.org/BeagleBoard_Community
   14  */
   15 
   16 /* Unusable as clocksource because of unreliable oscillator */
   17 &counter32k {
   18         status = "disabled";
   19 };
   20 
   21 /* Unusable as clockevent because of unreliable oscillator, allow to idle */
   22 &timer1_target {
   23         /delete-property/ti,no-reset-on-init;
   24         /delete-property/ti,no-idle;
   25         timer@0 {
   26                 /delete-property/ti,timer-alwon;
   27         };
   28 };
   29 
   30 /* Preferred always-on timer for clocksource */
   31 &timer12_target {
   32         ti,no-reset-on-init;
   33         ti,no-idle;
   34         timer@0 {
   35                 /* Always clocked by secure_32k_fck */
   36         };
   37 };
   38 
   39 /* Preferred timer for clockevent */
   40 &timer2_target {
   41         ti,no-reset-on-init;
   42         ti,no-idle;
   43         timer@0 {
   44                 assigned-clocks = <&gpt2_fck>;
   45                 assigned-clock-parents = <&sys_ck>;
   46         };
   47 };

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