Beginners • Re: Disabling SPI 0 interface to make GPIO 8 available

I just realized that i was able to solve half of my problem with using 0 chip select overlay for SPI0. Following advice from @aBUGSworstnightmare : "How/why did you enable SPI0? The mcp251xdf overlay will enable the required SPI interface. Leave your fingers from the 'enable SPI' option in raspi-config as this can/will only enable SPI-0. " I have modified my config.txt file to remove all references to SPI 0. However I am still getting this error:

Code:

[    2.573291] pinctrl-bcm2835 fe200000.gpio: pin gpio7 already requested by fe204000.spi; cannot claim for fe204800.spi[    2.573347] pinctrl-bcm2835 fe200000.gpio: pin-7 (fe204800.spi) status -22[    2.573371] pinctrl-bcm2835 fe200000.gpio: could not request pin 7 (gpio7) from group gpio7  on device pinctrl-bcm2711

Below is the new config.txt file contents:

Code:

#For more options and information see# http://rptl.io/configtxt# Some settings may impact device functionality. See link above for details# Uncomment some or all of these to enable the optional hardware interfacesdtoverlay=i2c0,pins_44_45=1dtoverlay=i2c3,pins_2_3dtoverlay=i2c1=off# FAN controller IC is connected to I2C 3 interfacedtoverlay=i2c-fan,emc2301,addr=0x2F,i2c3dtoverlay=i2c-rtc,rv3028,i2c0#dtparam=i2s=on#dtparam=spi=off# SPI0 CS need to be disabled as these conflict with the interrupt pin of DSP# CAN controller IC.#dtoverlay=spi0-0cs,spi_dev=off# Enabling SPI interfaces for battery CAN and DSP CAN controller ICs#dtoverlay=spi1-1cs,cs0_spi_dev=off#dtoverlay=spi4-1cs,cs0_spidev=offdtoverlay=mcp251xfd-spi4,oscillator=20000000,interrupt=24,spimaxfrequency=1000000dtoverlay=mcp251xfd,spi1-0,oscillator=20000000,interrupt=8,spimaxfrequency=1000000#Disable bluetoothdtoverlay=disable-bt# Enable RTC#dtoverlay=i2c-gpio,bus=1,i2c_gpio_sda=15,i2c_gpio_scl=14#dtoverlay=i2c-rtc,rv3028,i2c_bus=1# Enable TPMdtoverlay=tpm-slb9670# Enable audio (loads snd_bcm2835)dtparam=audio=on# Additional overlays and parameters are documented# /boot/firmware/overlays/README# Automatically load overlays for detected camerascamera_auto_detect=1# Automatically load overlays for detected DSI displaysdisplay_auto_detect=1# Automatically load initramfs files, if foundauto_initramfs=1# Enable DRM VC4 V3D driverdtoverlay=vc4-kms-v3dmax_framebuffers=2# Don't have the firmware create an initial video= setting in cmdline.txt.# Use the kernel's default instead.disable_fw_kms_setup=1# Run in 64-bit modearm_64bit=1# Disable compensation for displays with overscandisable_overscan=1# Run as fast as firmware / board allowsarm_boost=1[cm4]# Enable host mode on the 2711 built-in XHCI USB controller.# This line should be removed if the legacy DWC2 controller is required# (e.g. for USB device mode) or if USB support is not required.otg_mode=1[all]enable_uart=0dtoverlay=uart2dtoverlay=uart5

I have modified my config.txt file to remove all references to SPI

Statistics: Posted by aBUGSworstnightmare — Fri Mar 14, 2025 6:12 am