+# SPDX-FileCopyrightText: 2022 Kenneth Ryerson
+#
+# SPDX-License-Identifier: MIT
+"""Pin definitions for the Radxa CM3."""
+
+from adafruit_blinka.microcontroller.rockchip.rk3566 import pin
+
+# CM3 IO pins
+
+D0_B6 = pin.GPIO0_B6 # /I2C2_SDA_M0/SPI0_MOSI_M0/PWM2_M1
+D0_B5 = pin.GPIO0_B5 # /I2C2_SCL_M0/SPI0_CLK_M0/PWM1_M1
+D3_D5 = pin.GPIO3_D5 # /I2S1_SDI3_M1/SDMMC2_PWREN_M0
+D0_D1 = pin.GPIO0_D1 # /UART2_TX_M0
+D0_D0 = pin.GPIO0_D0 # /UART2_RX_M0
+D0_C7 = pin.GPIO0_C7 # /PWM0_M1/UART0_CTSn
+D3_C7 = pin.GPIO3_C7 # /I2S1_SCLK_TX_M1/SDMMC2_D1_M0
+D0_B7 = pin.GPIO0_B7 # /PWM0_M0
+D0_C3 = pin.GPIO0_C3 # /PWM4
+D3_D4 = pin.GPIO3_D4 # /I2S1_SDI2_M1/SDMMC2_DET_M0
+D3_D3 = pin.GPIO3_D3 # /I2S1_SDI1_M1/SDMMC2_CLK_M0
+D4_B2 = pin.GPIO4_B2 # /SPI3_MOSI_M0/I2S2_SDI_M1/I2C4_SDA_M0
+D4_B0 = pin.GPIO4_B0 # /SPI3_MISO_M0/I2S1_SDO1_M1
+D3_C6 = pin.GPIO3_C6 # /I2S1_MCLK_M1/SDMMC2_D0_M0
+D4_B3 = pin.GPIO4_B3 # /SPI3_CLK_M0/I2S2_SDO_M1/I2C4_SCL_M0
+D4_A6 = pin.GPIO4_A6 # /SPI3_CS0_M0/I2S1_SCLK_RX
+D4_B4 = pin.GPIO4_B4 # /I2C2_SDA_M1
+D4_B5 = pin.GPIO4_B5 # /I2C2_SCL_M1/I2S1_SDO3_M1
+D4_B1 = pin.GPIO4_B1 # /I2S1_SDO2_M1/ISP_PRELIGHT_TRIG
+D0_C5 = pin.GPIO0_C5 # /SPI0_MISO_M0/PWM6
+D4_C0 = pin.GPIO4_C0 # /PWM11_IR_M1
+D0_C6 = pin.GPIO0_C6 # /SPI0_CS0_M0/PWM7_IR
+D3_D0 = pin.GPIO3_D0 # /I2S1_LRCK_TX_M1/SDMMC2_D2_M0
+D4_A7 = pin.GPIO4_A7 # /I2S1_LRCK_RX_M1/SPI3_CS1_M0
+D0_C2 = pin.GPIO0_C2 # /PWM3_IR
+D3_D2 = pin.GPIO3_D2 # /I2S1_SDI0_M1
+D3_D1 = pin.GPIO3_D1 # /I2S1_SDO0_M1/SDMMC2_D3_M0
+D0_B1 = pin.GPIO0_B1 # /I2C0_SCL
+D0_B2 = pin.GPIO0_B2 # /I2C0_SDA
+
+
+# Aliases for Raspberry Pi compute module compatibility
+
+D2 = D0_B6
+D3 = D0_B5
+D4 = D3_D5
+D5 = D4_B1
+D6 = D0_C5
+
+D8 = D4_A6
+D9 = D4_B0
+D10 = D4_B2
+D11 = D4_B3
+D12 = D4_C0
+D13 = D0_C6
+D14 = D0_D1
+D15 = D0_D0
+D16 = D4_A7
+D17 = D0_C7
+D18 = D3_C7
+D19 = D3_D0
+D20 = D3_D2
+D21 = D3_D1
+D22 = D0_C3
+D23 = D3_D4
+D24 = D3_D3
+D25 = D3_C6
+D26 = D0_C2
+D27 = D0_B7
+
+D44 = D0_B2
+D45 = D0_B1
+
+
+# I2C
+SDA = D0_B6
+SCL = D0_B5
+
+# SPI
+CE0 = D4_A6
+SCLK = D4_B3
+SCK = D4_B3
+MOSI = D4_B2
+MISO = D4_B0
+
+# UART aliases
+UART_TX = D0_D1
+UART_RX = D0_D0
+TXD = D0_D1
+RXD = D0_D0
+TX = D0_D1
+RX = D0_D0