GPIOs on emCON-RZ/G1x under Linux

Please see the following table for the translation from baseboard pin to CPU pin:

Under Linux you can use sysfs to access gpios.

To get access to an GPIO pin, first, write the GPIO number to /sys/class/gpio/export

echo 34 > /sys/class/gpio/export

Now you should find a directory in /sys/class/gpio to access your GPIO pin. Write in or out to direction to change the direction of the pin:

echo out > /sys/class/gpio/gpio34/direction

The value (0 for off, 1 for on) of the pin is in the value file. To read or change it, read the file or write to it.

echo 1 > /sys/class/gpio/gpio34/valuecat /sys/class/gpio/gpio34/value

The list of GPIO numbers can be found below.

If the used kernel is compiled with CONFIG_DEBUG_FS you can get a list of the GPIOs with the command:

cat /sys/kernel/debug/gpio

Remark: emtrion compiles the Linux Kernel 4.x for emCON-RZ/G1x boards with CONFIG_DEBUG_FS.

emCON-RZ/G1E on Avari

There are 8 GPIOs on J27 with a signal level of 3.3V.

Connector	Pin	Signal	Signal on RZ/G1E	Bank and pin	GPIO Number
J27	8	GPIO_1	GPIO_1	0-1	993
J27	10	GPIO_2	GPIO_2	0-2	994
J27	12	GPIO_3	GPIO_3	5-4	846
J27	14	GPIO_4	GPIO_4	4-31	901
J27	16	GPIO_5	GPIO_5	4-26	896
J27	18	GPIO_6	GPIO_6	4-29	899
J27	20	GPIO_7	not connected
J27	22	GPIO_8	not connected

There are 8 GPIOs on J27 with a signal level of 3.3V.

Connector	Pin	Signal	Signal on RZ/G1M	Bank and pin	GPIO Number
J27	8	GPIO_1	GP4_13	4-13	883
J27	10	GPIO_2	GP4_14	4-14	884
J27	12	GPIO_3	GP4_15	4-15	885
J27	14	GPIO_4	GP4_16	4-16	886
J27	16	GPIO_5	GP4_17	4-17	887
J27	18	GPIO_6	GP4_18	4-18	888
J27	20	GPIO_7	GP4_19	4-19	889
J27	22	GPIO_8	GP4_20	4-20	890

There are 8 GPIOs on J27 with a signal level of 3.3V.

Connector	Pin	Signal	Signal on RZ/G1H	Bank and pin	GPIO Number
J27	8	GPIO_1	GP1_0	1-0	960
J27	10	GPIO_2	GP1_1	1-1	961
J27	12	GPIO_3	GP1_2	1-2	962
J27	14	GPIO_4	GP1_3	1-3	963
J27	16	GPIO_5	GP1_10	1-10	970
J27	18	GPIO_6	GP1_11	1-11	971
J27	20	GPIO_7	GP1_13	1-13	973
J27	22	GPIO_8	GP1_14	1-14	974