About imx6q ECSPI2_SS0 pin.

[guanliangding]

Hi, all:

     I config EIM_RW pin to be GPIO2_26 for ecspi2 cs signal. but it don't work any more. No more warning or error information. And just the cs pin don't working. Other is ok. I change to another gpio is ok. devicetree like follow, and i sure the pin is only one function.

[Yuri]

Hello,

Please check if iomuxc section of ecspi2 is correctly describes the SS pin function as GPIO.

Have a great day,
Yuri

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[guanliangding]

Hi Yuri:

     Thanks!

     I make sure that ss0 havn't conflict. In special, it is used in EIM and boot configuration. In booting stage, it is a boot configuration pin. In system stage, it is depend on system config. On the other hand, the ecspix ssx havn't special requiment. It is just used a GPIO in the driver. So i change the pin to another pin, it working correctly.

[Yuri]

Hi,

Check pinctrl_ecspi2_1 and gpio2 descriptins in dts

Regards,

Yuri

[guanliangding]

Hi, Yuri:

     In the devicetrees, the gpio is direct setting, such as "cs-gpios = <gpio2 26 0>", not the method of "cs-gpios=<pinctl-xxx>." So it is no requirement to configurations. And other ecspix ssx pin is working ok on my way.