Kernel panic error on number of time reboot CPU:0, Error: cbb-noc@2300000, irq=15 L4T 35.4.1

[Pratik_01]

Hi,
After a system reboot over 3 times, I start getting the kernel panic with the error of CPU:0, Error:cbb-noc.
can I know what is the root cause of this error ??

kernel_panic_issue.txt (5.9 KB)

[WayneWWW]

If you are talking about rel35 Xavier NX.

Please upgrade to rel-35.5. and apply this patch to your kernel.

https://docs.nvidia.com/jetson/archives/r35.5.0/DeveloperGuide/SD/Kernel/DisplayConfigurationAndBringUp/XavierDisplayconfig.html?highlight=powergate#bypassing-the-seamless-display-issue

[Pratik_01]

once again the same issue occurred when we changed in dtsi

diff --git a/common/tegra194-p3509-disp.dtsi b/common/tegra194-p3509-disp.dtsi
index f93b99a..15c7ad0 100644
--- a/common/tegra194-p3509-disp.dtsi
+++ b/common/tegra194-p3509-disp.dtsi
@@ -33,7 +33,7 @@
nvidia,fb-flags = <TEGRA_FB_FLIP_ON_PROBE>;
win-mask = <0x7>;
nvidia,fb-win = <0>;
-  nvidia,dc-connector = <&sor1>;
+  nvidia,dc-connector = <&sor0>;
nvidia,dc-flags = <TEGRA_DC_FLAG_ENABLED>;
avdd_hdmi-supply = <&p3668_spmic_sd0>; /* 1v0 */
avdd_hdmi_pll-supply = <&p3668_spmic_sd1>; /* 1v8 */
@@ -47,7 +47,7 @@
nvidia,fb-flags = <TEGRA_FB_FLIP_ON_PROBE>;
win-mask = <0x38>;
nvidia,fb-win = <3>;
-  nvidia,dc-connector = <&sor0>;
+  nvidia,dc-connector = <&sor1>;
nvidia,dc-flags = <TEGRA_DC_FLAG_ENABLED>;
vdd-dp-pwr-supply = <&p3668_spmic_sd0>;
avdd-dp-pll-supply = <&p3668_spmic_sd1>;

we also added Bypassing the Seamless Display Issue patch

[WayneWWW]

Please enable the log as the patch from dev_dbg to dev_info so that we can know you applied the patch correctly.

Also, you need to share full log. Sometimes it is new issue but users cannot tell.