Repeated restart and Cannot enter the system

Autonomous Machines Jetson & Embedded Systems Jetson Xavier NX
1

after I do this change:

--- a/hardware/nvidia/platform/t19x/jakku/kernel-dts/common/tegra194-p3668-common.dtsi
+++ b/hardware/nvidia/platform/t19x/jakku/kernel-dts/common/tegra194-p3668-common.dtsi
@@ -90,6 +90,7 @@
                /* This I2C (GEN2) is routed only to 40-pin hdr
                 * Not being used in Jakku CVM/CVB/Porg-base-board
                 * it seems "ucsi_ccg" for USB-TypeC which is not supported by Jakku */
+               status = "okay";
                bmi160@69 {
                        compatible = "bmi,bmi160";
                        reg = <0x69>;
@@ -101,6 +102,21 @@
                        gyroscope_delay_us_min = <1250>;
                        status = "disabled";
                };
+               i2c_gpio0: tca9554@38 {
+                       compatible = "ti,tca9554";
+                       reg = <0x38>;
+                       status = "okay";
+                       #gpio-cells = <2>;
+                       //gpio-controller;
+               };
+               i2c_gpio1: tca9554@3c {
+                        compatible = "ti,tca9554";
+                        reg = <0x3c>;
+                        status = "okay";
+                        #gpio-cells = <2>;
+                        //gpio-controller;
+                };
+
        };

The system repeated restart and Cannot enter.
here is the log
反复重启无法进系统.log (118.0 KB)

And sometime I success ENTER in the system, I found that error:

cat /sys/kernel/debug/gpio

[  395.740838] tegra-i2c c240000.i2c: pio timed out addr: 0x3c tlen:28 rlen:4
[  395.741085] tegra-i2c c240000.i2c: --- register dump for debugging ----
[  395.741300] tegra-i2c c240000.i2c: I2C_CNFG - 0x22c00
[  395.741409] tegra-i2c c240000.i2c: I2C_PACKET_TRANSFER_STATUS - 0x10001
[  395.741540] tegra-i2c c240000.i2c: I2C_FIFO_CONTROL - 0x0
[  395.741709] tegra-i2c c240000.i2c: I2C_FIFO_STATUS - 0x800080
[  395.741835] tegra-i2c c240000.i2c: I2C_MST_FIFO_CONTROL - 0x70000
[  395.741955] tegra-i2c c240000.i2c: I2C_MST_FIFO_STATUS - 0x7c0000
[  395.742075] tegra-i2c c240000.i2c: I2C_MST_PACKET_TRANSFER_CNT - 0x0
[  395.742201] tegra-i2c c240000.i2c: I2C_INT_MASK - 0x7d
[  395.742343] tegra-i2c c240000.i2c: I2C_INT_STATUS - 0x2
[  395.742458] tegra-i2c c240000.i2c: i2c transfer timed out addr: 0x3c
[  395.742884] pca953x 1-003c: failed reading register
[  405.980673] tegra-i2c c240000.i2c: pio timed out addr: 0x3c tlen:28 rlen:4
[  405.980907] tegra-i2c c240000.i2c: --- register dump for debugging ----
[  405.981121] tegra-i2c c240000.i2c: I2C_CNFG - 0x22c00
[  405.981232] tegra-i2c c240000.i2c: I2C_PACKET_TRANSFER_STATUS - 0x10001
[  405.981383] tegra-i2c c240000.i2c: I2C_FIFO_CONTROL - 0x0
[  405.981560] tegra-i2c c240000.i2c: I2C_FIFO_STATUS - 0x800080
[  405.981673] tegra-i2c c240000.i2c: I2C_MST_FIFO_CONTROL - 0x70000
[  405.981795] tegra-i2c c240000.i2c: I2C_MST_FIFO_STATUS - 0x7c0000
[  405.981917] tegra-i2c c240000.i2c: I2C_MST_PACKET_TRANSFER_CNT - 0x0
[  405.982090] tegra-i2c c240000.i2c: I2C_INT_MASK - 0x7d
[  405.982214] tegra-i2c c240000.i2c: I2C_INT_STATUS - 0x2
[  405.982333] tegra-i2c c240000.i2c: i2c transfer timed out addr: 0x3c
[  405.982733] pca953x 1-003c: failed reading register
2

After reset this change and reflash the image,
the error was disapper.

3

this is the normal starting up log
正常开机log20230408.txt (30.5 KB)

5

hello Xzz,

please check you’ve corresponding device tree changes to enable tca9554 correctly.

6

Hi,jerrtChang:
Thank you for reply,
now I found the problem:
There are some “null pointed” error in the driver which cause this.

8

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