> > Author: ian
> > Date: Tue Jan 24 02:09:30 2017
> > New Revision: 312679
> > URL: https://svnweb.freebsd.org/changeset/base/312679
[...]
On Wed, 2017-02-15 at 10:31 +0000, Yoshiro MIHIRA wrote:
> Hi.
> Ian
>
> Thank you for your strong effort to support imx6 board.
>
> I have SolidRun HummingBoard-i2(imx6dl-hummingboard).
>
> I have reboot issue(never reset after reboot) and if I use Linux, I
> reproduce this issue So I reported this issue to SolidRun Forum.
> http://forum.solid-run.com/linux-on-cubox-i-and-hummingboard-f8/need-
> to-push-reset-button-to-reboot-linux-system-t3122.html
> But I could not get any information.
>
> I tested latest kernel(r313280) unfortunately it was not solved.
>
> Do you know other information about reset issue, please let me know.
>
> Currently I need to push reset button when I restart system...
>
> Yours
> Yoshiro MIHIRA
>
[adding arm@ list]
Are you set up to build and test a custom kernel? If so, try applying
the patch I'm attaching to this mail and let me know if it helps. This
turns on a bit in the control register that is described in the manual
as "use a new more robust method to generate a software reset" (if it's
better, I wonder why they didn't make it the hardware default?).
-- Ian
Index: imx_machdep.c
===================================================================
--- imx_machdep.c (revision 313569)
+++ imx_machdep.c (working copy)
@@ -78,6 +78,7 @@ imx_wdog_cpu_reset(vm_offset_t wdcr_physaddr)
if ((pcr = devmap_ptov(wdcr_physaddr, sizeof(*pcr))) == NULL) {
printf("cpu_reset() can't find its control register... locking up now.");
} else {
+ *pcr |= 1 << 6;
*pcr &= ~WDOG_CR_SRS;
*pcr &= ~WDOG_CR_SRS;
*pcr &= ~WDOG_CR_SRS;
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