Tool/software: Linux
Dear Sir or Madame
We want to access a chip, during MLO/u-boot, connected via a SPI interface but we get the error message "Invalid bus 2 (err=-19)" when using function call 'spi_setup_slave'
Is it a problem for the low level drive that the "out data line from the chip" is not connected (in uclass.c it seems that it is probing)?
The call look like this
seven_segment_spi = spi_setup_slave(2, 0, 1000000, SPI_MODE_0);
It seems that the declaration in our .dtsi file
&mcspi3 {
status = "okay";
ti,pindir-d0-out-d1-in;
ti,spi-num-cs = <0>;
};
do not add a spi device in the device list (uclass_foreach_dev in uclass.c seems to only find our qspi device.)
our defconfig file
CONFIG_SPI=y CONFIG_DM_SPI=y CONFIG_OMAP3_SPI=y
our own .dtsi file
&mcspi3 {
status = "okay";
ti,pindir-d0-out-d1-in;
ti,spi-num-cs = <0>;
};
Our pinmux
Our schematic
