Rock5/hardware/5a/gpio

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    ROCK 5 >  Hardware >  ROCK 5A hardware details >  GPIO

General purpose input-output (GPIO) connector

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

GPIO number	Function6	Function5	Function4	Function3	Function2	Function1	Pin#	Pin#	Function1	Function2	Function3	Function4	Function5	Function6	Function7	GPIO number
						+3.3V	1	2	+5.0V
32			UART6_RX_M1	SPI4_MISO_M2	I2C2_SDA_M4	GPIO1_A0	3	4	+5.0V
33			UART6_TX_M1	SPI4_MOSI_M2	I2C2_SCL_M4	GPIO1_A1	5	6	GND
43			PDM1_CLK1_M1	UART4_TX_M2	SPI0_CLK_M2	GPIO1_B3	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
34		PWM0_M2	UART6_RTSN_M1	SPI4_CLK_M2	I2C4_SDA_M3	GPIO1_A2	11	12	GPIO4_A1	SPI0_MOSI_M1	UART9_CTSN_M1	I2S1_SCLK_M0				129
35		PWM1_M2	UART6_CTSN_M1	SPI4_CS0_M2	I2C4_SCL_M3	GPIO1_A3	13	14	GND
140		I2S1_SDO3_M0	SPDIF0_TX_M1	PWM11_IR_M1	UART9_TX_M1	GPIO4_B4	15	16	GPIO1_D6	I2C8_SCL_M2	UART1_RTSN_M1	PWM14_M2				62
						+3.3V	17	18	GPIO1_D7	I2C8_SDA_M2	UART1_CTSN_M1	PWM15_IR_M3				63
37					SPI2_MOSI_M0	GPIO1_A5	19	20	GND
36					SPI2_MISO_M0	GPIO1_A4	21	22	GPIO1_B5	SPI0_CS1_M2	UART7_TX_M2					45
38					SPI2_CLK_M0	GPIO1_A6	23	24	GPIO1_A7	SPI2_CS0_M0	PDM1_SDI0_M1	PWM3_IR_M3				39
						GND	25	26	SARADC_VIN5
139	CAN1_TX_M1	I2S1_SDO2_M0	PWM15_IR_M1	UART8_CTSN_M0	I2C7_SDA_M3	GPIO4_B3	27	28	GPIO4_B2	I2C7_SCL_M3	SPI0_CS0_M1	UART8_RTSN_M0	PWM14_M1	I2S1_SDO1_M0	CAN1_RX_M1	138
42			PDM1_SDI3_M1	UART4_RX_M2	SPI0_MOSI_M2	GPIO1_B2	29	30	GND
41				PDM1_SDI2_M1	SPI0_MISO_M2	GPIO1_B1	31	32	GPIO4_B0	I2C6_SDA_M3	UART8_TX_M0	I2S1_SDI3_M0				136
44			PDM1_CLK0_M1	UART7_RX_M2	SPI0_CS0_M2	GPIO1_B4	33	34	GND
128			I2S1_MCLK_M0	UART9_RTSN_M1	SPI0_MISO_M1	GPIO4_A0	35	36	GPIO4_A2	SPI0_CLK_M1	I2S1_LRCK_M0					130
40				PDM1_SDI1_M1	SPI2_CS1_M0	GPIO1_B0	37	38	GPIO4_A5	I2C3_SDA_M2	UART3_TX_M2	I2S1_SDI0_M0				133
						GND	39	40	GPIO4_B1	I2C6_SCL_M3	SPI0_CS1_M1	UART8_RX_M0	SPDIF1_TX_M1	I2S1_SDO0_M0		137

Pins marked with color orange are designed for debug console.
PWM; x6, PWM0 / PWM1 / PWM3 / PWM11 / PWM14 / PWM15
- PWM0
- PWM1
- PWM3
- PWM11
- PWM14
- PWM5
SPI: x3, SPI0 / SPI2 / SPI4
- SPI0
- SPI2
- SPI4
I2C: x6, I2C-1 / I2C-2 / I2C-4 / I2C-6 / I2C-7 / I2C-8
- I2C-1
- I2C-2
- I2C-4
- I2C-6
- I2C-7
- I2C-8
UART: x6, UART6 / UART7 / UART8
- UART6
- UART7
- UART8
ADC: x1, SARADC_VIN5
CAN: x1, CAN1
USB 2.0: x1, USB_DP(PIN#27) + USB_DM(PIN#28)
- When selecting the USB function, we need to rework the hardware like this.
  - Add R104 and R106
  - Remove R169 and R170

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

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