Linux/AM3352: SPI0 Master. Receive does not work

Part Number: AM3352

Tool/software: Linux

Hallo,

My master SPI0 can transmit  bytes but does not read the  incoming ones.  (and i watch them in oscii)

Clock and Chip Select signals look like should be

.dts:

&spi0
{
ti,pindir-d0-out-d1-in = <1>;   
ti,spi-num-cs = <1>;                 
status = "okay"; 

spidev0: spi@0
{
compatible = "linux,spidev";
spi-max-frequency = <3000000>;
reg = <0>; 
status = "okay"; 
};
};

I used PINMUX app for pin configuration

any help will be welcome!