How do I compile kernel patch ?

Hi,

I need to make my odroid-c2 work with Usb Dac nuforce2. (Usb DAC audio issue (crackling, pops, clicks))

I need to recompile linux kernel with the patch below:

usb: allow some timings to be tweak from cmdline · hardkernel/linux@5b39258 · GitHub

I dont find documentation about that.

Any help ?

Thx

Thanks for your help.

The build is in progress.

Note for others, to download patch from github, check the exemple (you need to add manualy '.patch' in the github url):

curl -L https://github.com/hardkernel/linux/commit/5b39258a76be9cd385ea7b45a8a21e08992eb6e5.patch >  projects/Odroid_C2/patches/linux/linux-009-usb-allow-some-timings-to-be-tweak-from-cmdline.patch

Oups! How to bind the building on the correct kernel ?

APPLY PATCH (project)   projects/Odroid_C2/patches/linux/linux-009-usb-allow-some-timings-to-be-tweak-from-cmdline.patch
patching file drivers/amlogic/usb/dwc_otg/310/dwc_otg_hcd_queue.c
Hunk #2 FAILED at 378.
1 out of 2 hunks FAILED -- saving rejects to file drivers/amlogic/usb/dwc_otg/310/dwc_otg_hcd_queue.c.rej

drivers/amlogic/usb/dwc_otg/310/dwc_otg_hcd_queue.c.rej

--- drivers/amlogic/usb/dwc_otg/310/dwc_otg_hcd_queue.c
+++ drivers/amlogic/usb/dwc_otg/310/dwc_otg_hcd_queue.c
@@ -378,14 +390,19 @@ static int check_periodic_bandwidth(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
         * High speed mode.
         * Max periodic usecs is 80% x 125 usec = 100 usec.
         */
-
-       max_claimed_usecs = 125 - qh->usecs;
+       if(usb_timing_tweak)
+           max_claimed_usecs = 125 - qh->usecs;
+       else
+           max_claimed_usecs = 100 - qh->usecs;
    else
        /*
         * Full speed mode.
         * Max periodic usecs is 90% x 1000 usec = 900 usec.
         */
-       max_claimed_usecs = 1000 - qh->usecs;
+       if(usb_timing_tweak)
+           max_claimed_usecs = 1000 - qh->usecs;
+       else
+           max_claimed_usecs = 900 - qh->usecs;

    if (hcd->periodic_usecs > max_claimed_usecs) {
        DWC_INFO("%s: already claimed usecs %d, required usecs %d\n", __func__, hcd->periodic_usecs, qh->usecs);

Hi,

I don't understand, I'm running "LibreELEC (official): 8.2.1 (Odroid_C2.aarch64)"

I want to update the system with kszaq's builds but it's not working.

Libreelec told me, the architecture is not compatible.

What can I do ?

Ah ok

So, I have runned the upgrade with the information below and the result was my C2 became "unbootable" (I have on the screen the Libreelec loading image and nothing happen)...

touch /storage/.update/.nocompat
cd .update
wget https://kszaq.libreelec.tv/s905/8.2/8.2.2.3/LibreELEC-S905.arm-8.2-8.2.2.3-C2.tar

I need to reinstall all my configuration setup

I hope it's will be more easier to switch between customs rom and officials. cause I don't want to reinstall all time.

Is it possible to upgrade from 8.2.2.3 to 8.3 for exemple?

thx

Quote from kszaq

fdef After upgrading to my build you should have a new file called boot.ini.update. Remove boot.ini and rename boot.ini.update to boot.ini. This will make your system bootable again.

Thx for this notification. I'll remember it !

Do you have any documentation of this information ? Maybe you could provide a README file in your root repository, it will be useful for the other users.

@all,

I confirm the patch embedded in the kszaq custom build works !

I listen again little clicks but it appear only when I navigate the kodi information/menu while the video is running.