Hi All,
We are currently using i.MX6ULL based custom board. We are facing issues due to SPI interface.
We are using SPI3 and four gpios on GPIO1 port.
1. We have configured 3 pins GPIO1_IO18, GPIO1_IO19 and GPIO1_IO06 as outputs.
2. We have set all these three pins high (verified it using Oscilloscope ) and executed the mxc_spi_test1.out application.
3. After executing mxc_spi_test1.out application status of these output pins is changed to low and GPIO1_IO06 is changed from output to input.
Request your help to resolve this issue.
We have configured SPI3 with below mentioned settings:
&ecspi3 {
fsl,spi-num-chipselects = <1>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_ecspi3>;
cs-gpios = <&gpio1 20 0>;
status = "okay";
chip1: spidev@0x0 {
compatible = "spidev";
spi-max-frequency = <10000000>;
reg = <0>;
};
};
pinctrl_ecspi3: ecspi3grp {
fsl,pins = <
MX6UL_PAD_UART2_TX_DATA__GPIO1_IO20 0x80000000
MX6UL_PAD_UART2_RX_DATA__ECSPI3_SCLK 0x80000000
MX6UL_PAD_UART2_CTS_B__ECSPI3_MOSI 0x80000000
MX6UL_PAD_UART2_RTS_B__ECSPI3_MISO 0x80000000
>;
};
