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how to change pin muxing of pad

Question asked by srinivasaporam on Dec 15, 2015
Latest reply on Dec 16, 2015 by igorpadykov

Hi,

We are working on a IMX6 board where we have attached a sensor through SPI to ECSPI2. the chip select ECSPI2_SS1 we have choosen as EIM_LBA as per the reference manual.

 

This EIM_LBA corresponds to GPIO2_IO27 (GPIO59 ((2-1)*32+27)).  From our application we are making this GPIO59 to high and low but it is not happening.

 

Where as we have cross checked it with another SPI (ECSPI1 with SS0) where ECSPI1_SS0 is taken as EIM_EB2 whose respective GPIO is GPIO2_IO30.

 

Hi,

 

in DTS file which is using imx6q-pinfun.h is defined as :

 

#define MX6QDL_PAD_EIM_LBA__EIM_LBA_B   0x108 0x41c 0x000 0x0 0x0

#define MX6QDL_PAD_EIM_LBA__IPU1_DI1_PIN17   0x108 0x41c 0x000 0x1 0x0

#define MX6QDL_PAD_EIM_LBA__ECSPI2_SS1  0x108 0x41c 0x820 0x2 0x0

#define MX6QDL_PAD_EIM_LBA__GPIO2_IO27  0x108 0x41c 0x820 0x2 0x0

#define MX6QDL_PAD_EIM_LBA__SRC_BOOT_CFG26 0x108 0x41c 0x000 0x7 0x0

 

In my dtsi/dts files if i use

 

MX6QDL_PAD_SD4_DAT1__PWM3_OUT 0x1b0b1 then SD4_DAT1 should be linked to PWM3 _OUT

 

and if i use

 

MX6QDL_PAD_SD4_DAT1__SD4_DATA1  0x17059 then it should be linked automatically to SD4_DATA1

 

or do we need to do some setting for linking of SD4_DAT1 (in software perspective)

 

from IMX6DQ reference manual:

 

By default mux mode of SD4_DAT1 is set to GPIO (GPIO2_IO29)

 

What should we do to get SD4_DAT1 to PWM3_OUT

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