+# Pinout reference:
+# https://wiki.banana-pi.org/Banana_Pi_BPI-M5#BPI-M5_40PIN_GPIO_.28CON2.29
+P3 = pin.GPIOX_17  # I2C_M2_SDA
+P5 = pin.GPIOX_18  # I2C_M2_SCL
+P7 = pin.GPIOX_5
+P8 = pin.GPIOX_12  # UART_A_TX
+P10 = pin.GPIOX_13  # UART_A_RX
+P11 = pin.GPIOX_3
+P12 = pin.GPIOA_8  # TDMB_SCLK
+P13 = pin.GPIOX_4
+P15 = pin.GPIOX_7
+P16 = pin.GPIOX_0
+P18 = pin.GPIOX_1
+P19 = pin.GPIOX_8  # PCM_DIN
+P21 = pin.GPIOX_9  # PCM_DOUT
+P22 = pin.GPIOX_2  # SDIO_D2
+P23 = pin.GPIOX_11  # PCM_CLK
+P24 = pin.GPIOX_10  # PCM_SYNC
+P26 = pin.GPIOX_16  # PWM_E
+P27 = pin.GPIOA_14  # I2C_M3_SDA
+P28 = pin.GPIOA_15  # I2C_M3_SCL
+P29 = pin.GPIOX_14  # UART_A_CTS
+P31 = pin.GPIOX_15  # UART_A_RTS
+P32 = pin.GPIOX_19  # PWM_B
+P33 = pin.GPIOX_6
+P35 = pin.GPIOAO_7  # TDMB_FS
+P36 = pin.GPIOH_5
+P37 = pin.GPIOAO_9  # I2S_MCLK
+P38 = pin.GPIOAO_10  # TDMB_DIN SPDIF_OUT
+P40 = pin.GPIOAO_4  # TDMB_DOUT