Is there any meothd to show the flash detailed info of Jetson Orin NX 16GB-DRAM (P3767-0000)

Robotics & Edge Computing Jetson & Embedded Systems Jetson Orin NX
1

Hi Experts,

base on dts file, I found out that there are 4 spi devices on the Jetson Orin NX 16GB-DRAM (P3767-0000)
spi@3210000{
status = “okay”;
spi@0 {
compatible = “tegra-spidev”;
reg = <0x0>;
spi-max-frequency = <50000000>;
controller-data {
nvidia,enable-hw-based-cs;
nvidia,rx-clk-tap-delay = <0x10>;
nvidia,tx-clk-tap-delay = <0x0>;
};
};
spi@1 {
compatible = “tegra-spidev”;
reg = <0x1>;
spi-max-frequency = <50000000>;
controller-data {
nvidia,enable-hw-based-cs;
nvidia,rx-clk-tap-delay = <0x10>;
nvidia,tx-clk-tap-delay = <0x0>;
};
};

};

/* SPI3, 40pin header, Pin 37(MOSI), Pin 22(MISO), Pin 13(CLK), Pin 18(CS) */
spi@3230000{
status = “okay”;
spi@0 {
compatible = “tegra-spidev”;
reg = <0x0>;
spi-max-frequency = <50000000>;
controller-data {
nvidia,enable-hw-based-cs;
nvidia,rx-clk-tap-delay = <0x10>;
nvidia,tx-clk-tap-delay = <0x0>;
};
};
spi@1 {
compatible = “tegra-spidev”;
reg = <0x1>;
spi-max-frequency = <50000000>;
controller-data {
nvidia,enable-hw-based-cs;
nvidia,rx-clk-tap-delay = <0x10>;
nvidia,tx-clk-tap-delay = <0x0>;
};
};
};
Could you please tell me where I can check the the spi devices detailed info.

thanks,
LImeng

3

Hi meng.li,

Are you using the devkit or custom board for Orin NX?
What’s the Jetpack version in use?

There’re 2 SPI interfaces available for Orin NX, and 2 CS for each SPI interface.

What do you mean about “the spi devices detailed info”?
The pin mapping? SPI frequency? SPI mode?

May I know what’s your use case for SPI interface?

4

Hi KevinFFF,

I don’t use customer board.
I use the NVIDIA Orin NX module and the NVIDIA Orin Nano carrier board.
About the “the spi devices detailed info”
I mean that I don’t know what spi slave chip is connected, because I don’t have the schematics of the Orin NX module. It is not showed to users like the schematic of carrier board.

thanks,
LImeng

5

Hi meng.li,

SPI interface is from the SoM, you can find more details in Jetson Orin NX Series and Orin Nano Series Design Guide and Jetson Orin Series SoC Technical Reference Manual

7

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