..<br>..<br>In my dts<br><br>I have my chipselect defined as follows:<br><br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; gpt4: timer@640 {&nbsp;&nbsp;&nbsp; // General Purpose Timer GPT4 in GPIO mode for SMC4000IO chip select.<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; compatible = &quot;fsl,mpc5200b-gpt-gpio&quot;,&quot;fsl,mpc5200-gpt-gpio&quot;;<br>
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; cell-index = &lt;4&gt;;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; reg = &lt;0x640 0x10&gt;;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; interrupts = &lt;1 13 0&gt;;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; interrupt-parent = &lt;&amp;mpc5200_pic&gt;;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; gpio-controller;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; #gpio-cells = &lt;2&gt;;<br>
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; };<br><br>I found the gpio in<br>
# cat /sys/class/gpio/gpiochip215/label<br>
/soc5200@f0000000/timer@640<br>
<br>The spi controller is defined like this:<br><br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; spi@2400 {<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; device_type = &quot;spi&quot;;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; #address-cells = &lt;1&gt;;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; #size-cells = &lt;0&gt;;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; compatible = &quot;fsl,mpc5200-psc-spi&quot;,&quot;fsl,mpc5200b-psc-spi&quot;;<br>
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; cell-index = &lt;2&gt;;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; reg = &lt;2400 100&gt;;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; interrupts = &lt;2 3 0&gt;;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; interrupt-parent = &lt;&amp;mpc5200_pic&gt;;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; gpios = &lt;&amp;gpt4 0 0&gt;;<br>
<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; io-controller@0 {<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; compatible = &quot;microkey,smc4000io&quot;;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; spi-max-frequency = &lt;1000000&gt;;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; reg = &lt;0&gt;;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; };<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; };<br>
<br>At bootup linux (2.6.27) reports:<br><br>mpc52xx-psc-spi f0000960.spi: probe called without platform data, no (de)activate_cs function will be called.<br><br>Is my assumption wrong that the gpios property is the way to map chipselects to the spi driver?<br>
<br>Thanks in advance.<br>Henk.<br><br><br>