Hello,
I just flash a new image with JetPack 4.6 today and tried to setup SPI using:
sudo /opt/nvidia/jetson-io/jetson-io.py
Configure Jetson 40pin Header → Select spi → Save pin changes → Save and reboot to reconfigure pins
After reboot there are no /dev/spidevx.x
It seems to me that something went wrong with the new release as I was doing the same with JetPack 4.4 and 4.5
I can see that /boot/extlinux/extlinux.conf changed to enable the new dtb
TIMEOUT 30
DEFAULT JetsonIO
MENU TITLE L4T boot options
LABEL primary
MENU LABEL primary kernel
LINUX /boot/Image
INITRD /boot/initrd
APPEND ${cbootargs} quiet root=/dev/mmcblk0p1 rw rootwait rootfstype=ext4 console=ttyS0,115200n8 console=tty0 fbcon=map:0 net.ifnames=0
# When testing a custom kernel, it is recommended that you create a backup of
# the original kernel and add a new entry to this file so that the device can
# fallback to the original kernel. To do this:
#
# 1, Make a backup of the original kernel
# sudo cp /boot/Image /boot/Image.backup
#
# 2, Copy your custom kernel into /boot/Image
#
# 3, Uncomment below menu setting lines for the original kernel
#
# 4, Reboot
# LABEL backup
# MENU LABEL backup kernel
# LINUX /boot/Image.backup
# INITRD /boot/initrd
# APPEND ${cbootargs}
LABEL JetsonIO
MENU LABEL Custom Header Config: <HDR40 User Custom [2021-08-09-171230]>
LINUX /boot/Image
FDT /boot/kernel_tegra210-p3448-0000-p3449-0000-b00-user-custom.dtb
INITRD /boot/initrd
APPEND ${cbootargs} quiet root=/dev/mmcblk0p1 rw rootwait rootfstype=ext4 console=ttyS0,115200n8 console=tty0 fbcon=map:0 net.ifnames=0
And when I relaunch jetson-io the spi pins are selected.
Can someone check the SPI setup with JetPack4.6 on his Jetson Nano B01 to see if related to the release?
Otherwise the configuration for the picamera HQ imx477 works great.
Thank you
Could you dis-compile the kernel_tegra210-p3448-0000-p3449-0000-b00-user-custom.dtb to check the spi@0/spi@1 still there.
spi@7000d400 {
compatible = "nvidia,tegra210-spi";
reg = <0x0 0x7000d400 0x0 0x200>;
interrupts = <0x0 0x3b 0x4>;
iommus = <0x30 0xe>;
#address-cells = <0x1>;
#size-cells = <0x0>;
dmas = <0x51 0xf 0x51 0xf>;
dma-names = "rx", "tx";
nvidia,clk-parents = "pll_p", "clk_m";
clocks = <0x26 0x29 0x26 0xf3 0x26 0xe9>;
clock-names = "spi", "pll_p", "clk_m";
resets = <0x26 0x29>;
reset-names = "spi";
status = "okay";
linux,phandle = <0x110>;
phandle = <0x110>;
prod-settings {
#prod-cells = <0x3>;
prod {
prod = <0x4 0xfff 0x0>;
};
prod_c_flash {
status = "disabled";
prod = <0x4 0x3f 0x7>;
};
prod_c_loop {
status = "disabled";
prod = <0x4 0xfff 0x44b>;
};
};
spi@0 {
compatible = "spidev";
reg = <0x0>;
spi-max-frequency = <0x1f78a40>;
controller-data {
nvidia,enable-hw-based-cs;
nvidia,rx-clk-tap-delay = <0x7>;
};
};
spi@1 {
compatible = "spidev";
reg = <0x1>;
spi-max-frequency = <0x1f78a40>;
controller-data {
nvidia,enable-hw-based-cs;
nvidia,rx-clk-tap-delay = <0x7>;
};
};
};
spi@7000d600 {
compatible = "nvidia,tegra210-spi";
reg = <0x0 0x7000d600 0x0 0x200>;
interrupts = <0x0 0x52 0x4>;
iommus = <0x30 0xe>;
#address-cells = <0x1>;
#size-cells = <0x0>;
dmas = <0x51 0x10 0x51 0x10>;
dma-names = "rx", "tx";
nvidia,clk-parents = "pll_p", "clk_m";
clocks = <0x26 0x2c 0x26 0xf3 0x26 0xe9>;
clock-names = "spi", "pll_p", "clk_m";
resets = <0x26 0x2c>;
reset-names = "spi";
status = "okay";
linux,phandle = <0x111>;
phandle = <0x111>;
prod-settings {
#prod-cells = <0x3>;
prod {
prod = <0x4 0xfff 0x0>;
};
prod_c_flash {
status = "disabled";
prod = <0x4 0x3f 0x6>;
};
prod_c_loop {
status = "disabled";
prod = <0x4 0xfff 0x44b>;
};
};
spi@0 {
compatible = "spidev";
reg = <0x0>;
spi-max-frequency = <0x1f78a40>;
controller-data {
nvidia,enable-hw-based-cs;
nvidia,rx-clk-tap-delay = <0x6>;
};
};
spi@1 {
compatible = "spidev";
reg = <0x1>;
spi-max-frequency = <0x1f78a40>;
controller-data {
nvidia,enable-hw-based-cs;
nvidia,rx-clk-tap-delay = <0x6>;
};
};
};
Here is the dts:
kernel_tegra210-p3448-0000-p3449-0000-b00-user-custom.dts (319.6 KB)
There is spi@0/spi@1:
spi@7000d400 {
compatible = "nvidia,tegra210-spi";
reg = <0x0 0x7000d400 0x0 0x200>;
interrupts = <0x0 0x3b 0x4>;
iommus = <0x30 0xe>;
#address-cells = <0x1>;
#size-cells = <0x0>;
dmas = <0x51 0xf 0x51 0xf>;
dma-names = "rx", "tx";spi@
nvidia,clk-parents = "pll_p", "clk_m";
clocks = <0x26 0x29 0x26 0xf3 0x26 0xe9>;
clock-names = "spi", "pll_p", "clk_m";
resets = <0x26 0x29>;
reset-names = "spi";
status = "okay";
linux,phandle = <0xf8>;
phandle = <0xf8>;
prod-settings {
#prod-cells = <0x3>;
prod {
prod = <0x4 0xfff 0x0>;
};
prod_c_flash {
status = "disabled";
prod = <0x4 0x3f 0x7>;
};
prod_c_loop {
status = "disabled";
prod = <0x4 0xfff 0x44b>;
};
};
spi@0 {
compatible = "tegra-spidev";
reg = <0x0>;
spi-max-frequency = <0x1f78a40>;
controller-data {
nvidia,enable-hw-based-cs;
nvidia,rx-clk-tap-delay = <0x7>;
};
};
spi@1 {
compatible = "tegra-spidev";
reg = <0x1>;
spi-max-frequency = <0x1f78a40>;
controller-data {
nvidia,enable-hw-based-cs;
nvidia,rx-clk-tap-delay = <0x7>;
};
};
};
spi@7000d600 {
compatible = "nvidia,tegra210-spi";
reg = <0x0 0x7000d600 0x0 0x200>;
interrupts = <0x0 0x52 0x4>;
iommus = <0x30 0xe>;
#address-cells = <0x1>;
#size-cells = <0x0>;
dmas = <0x51 0x10 0x51 0x10>;
dma-names = "rx", "tx";
nvidia,clk-parents = "pll_p", "clk_m";
clocks = <0x26 0x2c 0x26 0xf3 0x26 0xe9>;
clock-names = "spi", "pll_p", "clk_m";
resets = <0x26 0x2c>;
reset-names = "spi";
status = "okay";
linux,phandle = <0xf9>;
phandle = <0xf9>;
prod-settings {
#prod-cells = <0x3>;
prod {
prod = <0x4 0xfff 0x0>;
};
prod_c_flash {
status = "disabled";
prod = <0x4 0x3f 0x6>;
};
prod_c_loop {
status = "disabled";
prod = <0x4 0xfff 0x44b>;
};
};
spi@0 {
compatible = "tegra-spidev";
reg = <0x0>;
spi-max-frequency = <0x1f78a40>;
controller-data {
nvidia,enable-hw-based-cs;
nvidia,rx-clk-tap-delay = <0x6>;
};
};
spi@1 {
compatible = "tegra-spidev";
reg = <0x1>;
spi-max-frequency = <0x1f78a40>;
controller-data {
nvidia,enable-hw-based-cs;
nvidia,rx-clk-tap-delay = <0x6>;
};
};
};
The majors differences that I see with your dts are:
yours:
compatible = "spidev";
dma-names = "rx", "tx";
mine:
compatible = "tegra-spidev";
dma-names = "rx", "tx";spi@
Looks like 32.6.1 change the compatible cause it.
Could you modify it back to spidev to try.
@nicolas.t
For r32.6.1 need below command after boot to OS
modprobe spidev
Good to known, thank you, it seems to work.
@nicolas.t
Hi, did you remove R8 resistor to get the Jetson Nano B01 version to work?