Rock5/hardware/5b/gpio

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    ROCK 5 >  Hardware >  ROCK 5B hardware details >  GPIO

General purpose input-output (GPIO) connector

ROCK 5B has one 40-pin expansion header. Each pin is distinguished by color.

GPIO number	Function8	Function7	Function6	Function5	Function4	Function3	Function2	Function1	Pin#		Pin#	Function1	Function2	Function3	Function4	Function5	Function6	Function7	Function8	GPIO number
								+3.3V	1		2	+5.0V
139			I2S1_SDO2_M0	I2C7_SDA_M3		PWM15_IR_M1	CAN1_TX_M1	GPIO4_B3	3		4	+5.0V
138			I2S1_SDO1_M0	I2C7_SCL_M3		PWM14_M1	CAN1_RX_M1	GPIO4_B2	5		6	GND
115		SPI1_CS1_M1		I2C8_SDA_M4	UART7_CTSN_M1	PWM15_IR_M0		GPIO3_C3	7		8	GPIO0_B5			UART2_TX_M0	I2C1_SCL_M0	I2S1_MCLK_M1			13
								GND	9		10	GPIO0_B6			UART2_RX_M0	I2C1_SDA_M0	I2S1_SCLK_M1			14
113		SPI1_CLK_M1			UART7_RX_M1			GPIO3_C1	11		12	GPIO3_B5	CAN1_RX_M0	PWM12_M0	UART3_TX_M1		I2S2_SCLK_M1			109
111		SPI1_MOSI_M1		I2C3_SCL_M1				GPIO3_B7	13		14	GND
112		SPI1_MISO_M1		I2C3_SDA_M1	UART7_TX_M1			GPIO3_C0	15		16	GPIO3_A4								100
								+3.3V	17		18	GPIO4_C4		PWM5_M2				SPI3_MISO_M0		148
42		SPI0_MOSI_M2			UART4_RX_M2			GPIO1_B2	19		20	GND
41		SPI0_MISO_M2						GPIO1_B1	21		22	SARADC_IN4
43		SPI0_CLK_M2			UART4_TX_M2			GPIO1_B3	23		24	GPIO1_B4			UART7_RX_M2			SPI0_CS0_M2		44
								GND	25		26	GPIO1_B5			UART7_TX_M2			SPI0_CS1_M2		45
150		SPI3_CLK_M0		I2C0_SDA_M1		PWM7_IR_M3		GPIO4_C6	27		28	GPIO4_C5		PWM6_M2		I2C0_SCL_M1		SPI3_MOSI_M0		149
63					UART1_CTSN_M1	PWM15_IR_M3		GPIO1_D7	29		30	GND
47	SPDIF_TX_M0				UART1_RX_M1	PWM13_M2		GPIO1_B7	31		32	GPIO3_C2		PWM14_M0	UART7_RTSN_M1	I2C8_SCL_M4		SPI1_CS0_M1		114
103						PWM8_M0		GPIO3_A7	33		34	GND
110			I2S2_LRCK_M1		UART3_RX_M1	PWM13_M0	CAN1_TX_M0	GPIO3_B6	35		36	GPIO3_B1		PWM2_M1	UART2_TX_M2					105
									37		38	GPIO3_B2		PWM3_IR_M1	UART2_RX_M2		I2S2_SDI_M1			106
								GND	39		40	GPIO3_B3					I2S2_SDO_M1			107

IO Voltage

GPIO	Voltage Level	Tolerance
All GPIO	3.3V	3.63V
SARADC_IN4	1.8V	1.98V

GPIO number

Rockchip RK3588 GPIO has 5 banks, GPIO0 to GPIO4, each bank has 32 pins, naming as below:

GPIO0_A0 ~ A7 
GPIO0_B0 ~ B7
GPIO0_C0 ~ C7
GPIO0_D0 ~ D7
   
GPIO1_A0 ~ A7
....
GPIO1_D0 ~ D7

GPIO2_A0 ~ A7
....
GPIO2_D0 ~ D7

GPIO3_A0 ~ A7
....
GPIO3_D0 ~ D7

GPIO4_A0 ~ A7
....
GPIO4_D0 ~ D7

For Rockchip 5.10 kernel, the GPIO number can be calculated as below, take GPIO4_D5 as an example:

GPIO4_D5 = 32*4 + 8*3 + 5 = 157
(A=0, B=1, C=2, D=3)

To set GPIO4_D5 output

# cd /sys/class/gpio
# echo 157 > export
# cd gpio157
# echo out > direction
# echo 1 > value     # output high
# echo 0 > value     # output low