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Unable to access gpio 493


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Hi,

 

I am using Armbian (latest) image on Banana Pi CM4 and I don't have access to gpio493. I am getting the following error:

 

image.png.c390e1815073d21b7083e837c78396ce.png

 

And looks like gpiochip4xx is not available:

 

image.png.ade762d8530a65b5df70b69d304c4e94.png

 

When I modprobe this gpio number, I am getting following error:

modprobe: FATAL: Module gpiochip493 not found in directory /lib/modules/6.7.2-edge-meson64

 

Could you please help, how can I enable gpio 493?

 

Thanks

Edited by Abhishek Chr
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@Abhishek Chr It generally is better to tell the context behind the issue as well. For example its possible you are expecting pin 493 to be there because may be its there on raspberry pi. But this is not a raspberry pi and is using completely different chipset. Pin numbers can be completely different.

 

Hence it will be better if you tell what you are trying to achieve rather than what you are troubleshooting at the moment.

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Thanks @Gunjan Gupta.

 

I get following output:

a@bananapicm4io:~$ sudo cat /sys/kernel/debug/pinctrl/ff634400.bus:pinctrl@40-pinctrl-meson/pinmux-pins
Pinmux settings per pin
Format: pin (name): mux_owner gpio_owner hog?
pin 0 (GPIOZ_0): ff3f0000.ethernet (GPIO UNCLAIMED) function eth group eth_mdio
pin 1 (GPIOZ_1): ff3f0000.ethernet (GPIO UNCLAIMED) function eth group eth_mdc
pin 2 (GPIOZ_2): ff3f0000.ethernet (GPIO UNCLAIMED) function eth group eth_rgmii_rx_clk
pin 3 (GPIOZ_3): ff3f0000.ethernet (GPIO UNCLAIMED) function eth group eth_rx_dv
pin 4 (GPIOZ_4): ff3f0000.ethernet (GPIO UNCLAIMED) function eth group eth_rxd0
pin 5 (GPIOZ_5): ff3f0000.ethernet (GPIO UNCLAIMED) function eth group eth_rxd1
pin 6 (GPIOZ_6): ff3f0000.ethernet periphs-banks:518 function eth group eth_rxd2_rgmii
pin 7 (GPIOZ_7): ff3f0000.ethernet (GPIO UNCLAIMED) function eth group eth_rxd3_rgmii
pin 8 (GPIOZ_8): ff3f0000.ethernet (GPIO UNCLAIMED) function eth group eth_rgmii_tx_clk
pin 9 (GPIOZ_9): ff3f0000.ethernet (GPIO UNCLAIMED) function eth group eth_txen
pin 10 (GPIOZ_10): ff3f0000.ethernet (GPIO UNCLAIMED) function eth group eth_txd0
pin 11 (GPIOZ_11): ff3f0000.ethernet (GPIO UNCLAIMED) function eth group eth_txd1
pin 12 (GPIOZ_12): ff3f0000.ethernet (GPIO UNCLAIMED) function eth group eth_txd2_rgmii
pin 13 (GPIOZ_13): ff3f0000.ethernet (GPIO UNCLAIMED) function eth group eth_txd3_rgmii
pin 14 (GPIOZ_14): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 15 (GPIOZ_15): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 16 (GPIOH_0): ff600000.hdmi-tx (GPIO UNCLAIMED) function hdmitx group hdmitx_sda
pin 17 (GPIOH_1): ff600000.hdmi-tx (GPIO UNCLAIMED) function hdmitx group hdmitx_sck
pin 18 (GPIOH_2): ff600000.hdmi-tx (GPIO UNCLAIMED) function hdmitx group hdmitx_hpd_in
pin 19 (GPIOH_3): ff800280.cec (GPIO UNCLAIMED) function cec_ao_b_h group cec_ao_b_h
pin 20 (GPIOH_4): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 21 (GPIOH_5): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 22 (GPIOH_6): ffd1e000.i2c (GPIO UNCLAIMED) function i2c1 group i2c1_sda_h6
pin 23 (GPIOH_7): ffd1e000.i2c (GPIO UNCLAIMED) function i2c1 group i2c1_sck_h7
pin 24 (GPIOH_8): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 25 (BOOT_0): ffe07000.mmc (GPIO UNCLAIMED) function emmc group emmc_nand_d0
pin 26 (BOOT_1): ffe07000.mmc (GPIO UNCLAIMED) function emmc group emmc_nand_d1
pin 27 (BOOT_2): ffe07000.mmc (GPIO UNCLAIMED) function emmc group emmc_nand_d2
pin 28 (BOOT_3): ffe07000.mmc (GPIO UNCLAIMED) function emmc group emmc_nand_d3
pin 29 (BOOT_4): ffe07000.mmc (GPIO UNCLAIMED) function emmc group emmc_nand_d4
pin 30 (BOOT_5): ffe07000.mmc (GPIO UNCLAIMED) function emmc group emmc_nand_d5
pin 31 (BOOT_6): ffe07000.mmc (GPIO UNCLAIMED) function emmc group emmc_nand_d6
pin 32 (BOOT_7): ffe07000.mmc (GPIO UNCLAIMED) function emmc group emmc_nand_d7
pin 33 (BOOT_8): ffe07000.mmc (GPIO UNCLAIMED) function emmc group emmc_clk
pin 34 (BOOT_9): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 35 (BOOT_10): ffe07000.mmc (GPIO UNCLAIMED) function emmc group emmc_cmd
pin 36 (BOOT_11): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 37 (BOOT_12): (MUX UNCLAIMED) periphs-banks:549
pin 38 (BOOT_13): ffe07000.mmc (GPIO UNCLAIMED) function emmc group emmc_nand_ds
pin 39 (BOOT_14): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 40 (BOOT_15): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 41 (GPIOC_0): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 42 (GPIOC_1): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 43 (GPIOC_2): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 44 (GPIOC_3): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 45 (GPIOC_4): ffe05000.mmc (GPIO UNCLAIMED) function gpio_periphs group GPIOC_4
pin 46 (GPIOC_5): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 47 (GPIOC_6): (MUX UNCLAIMED) periphs-banks:559
pin 48 (GPIOC_7): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 49 (GPIOA_0): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 50 (GPIOA_1): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 51 (GPIOA_2): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 52 (GPIOA_3): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 53 (GPIOA_4): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 54 (GPIOA_5): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 55 (GPIOA_6): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 56 (GPIOA_7): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 57 (GPIOA_8): (MUX UNCLAIMED) periphs-banks:569
pin 58 (GPIOA_9): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 59 (GPIOA_10): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 60 (GPIOA_11): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 61 (GPIOA_12): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 62 (GPIOA_13): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 63 (GPIOA_14): ffd1c000.i2c (GPIO UNCLAIMED) function i2c3 group i2c3_sda_a
pin 64 (GPIOA_15): ffd1c000.i2c (GPIO UNCLAIMED) function i2c3 group i2c3_sck_a
pin 65 (GPIOX_0): ffe03000.mmc (GPIO UNCLAIMED) function sdio group sdio_d0
pin 66 (GPIOX_1): ffe03000.mmc (GPIO UNCLAIMED) function sdio group sdio_d1
pin 67 (GPIOX_2): ffe03000.mmc (GPIO UNCLAIMED) function sdio group sdio_d2
pin 68 (GPIOX_3): ffe03000.mmc (GPIO UNCLAIMED) function sdio group sdio_d3
pin 69 (GPIOX_4): ffe03000.mmc (GPIO UNCLAIMED) function sdio group sdio_clk
pin 70 (GPIOX_5): ffe03000.mmc (GPIO UNCLAIMED) function sdio group sdio_cmd
pin 71 (GPIOX_6): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 72 (GPIOX_7): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 73 (GPIOX_8): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 74 (GPIOX_9): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 75 (GPIOX_10): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 76 (GPIOX_11): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 77 (GPIOX_12): ffd24000.serial (GPIO UNCLAIMED) function uart_a group uart_a_tx
pin 78 (GPIOX_13): ffd24000.serial (GPIO UNCLAIMED) function uart_a group uart_a_rx
pin 79 (GPIOX_14): ffd24000.serial (GPIO UNCLAIMED) function uart_a group uart_a_cts
pin 80 (GPIOX_15): ffd24000.serial (GPIO UNCLAIMED) function uart_a group uart_a_rts
pin 81 (GPIOX_16): ffd19000.pwm (GPIO UNCLAIMED) function pwm_e group pwm_e
pin 82 (GPIOX_17): (MUX UNCLAIMED) (GPIO UNCLAIMED)
pin 83 (GPIOX_18): (MUX UNCLAIMED) periphs-banks:595
pin 84 (GPIOX_19): (MUX UNCLAIMED) periphs-banks:596
 

So my GPIOX_18 pin number is 595

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