Possible to remove the Broadcom 4345 chip

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX1
1

We are looking to physically remove the Broadcom 4345 wifi/bt chip off the jetson tx1 development board. Has anyone tried this or know if any core functionality will be affected besides the wireless communication

Thanks,
Jonathan

2

Hi cjon08, Did you mean BCM4354? It’s inside Jetson TX1 SoM.

3

Below is the SW way to disable it. FYI.

===SW workaround===
Inside the jetson DT file
kernel/arch/arm64/boot/dts/tegra210-platforms/tegra210-comms-p2530-0930.dtsi
remove or comment out the “gpio-output-high” section.

diff --git a/arch/arm64/boot/dts/tegra210-platforms/tegra210-comms-p2530-0930.dtsi b/arch/arm64/boot/dts/tegra210-platforms/tegra210-comms-p2530-0930.dtsi
index 3af6934…7b694ad 100644
— a/arch/arm64/boot/dts/tegra210-platforms/tegra210-comms-p2530-0930.dtsi
+++ b/arch/arm64/boot/dts/tegra210-platforms/tegra210-comms-p2530-0930.dtsi
@@ -9,10 +9,12 @@
TEGRA_GPIO(H, 2)
TEGRA_GPIO(I, 1)

;
+/*
gpio-output-high = <
TEGRA_GPIO(H, 0)
TEGRA_GPIO(I, 0)
;
+*/
};
};
===

4

Vickyy,
yes we would like to remove the BCM chip if it is possible

5

Opening the Module invalidates the warranty of the module. Why do you need to do this?

6

The wireless capability is not permitted at our area and we’ve been told that facilities would be more comfortable if the chip was physically removed.

We are exploring other options

7

Thank you for your help

8

Hi Jonathan (cjon08),

Just a thought, but would your facilities people consider it acceptable if the antennas were replaced with terminators instead?

I don’t know how effective they would be at NOT being antennas.

Chuck