What is a input_reg in pinfunc.h and how it is derived ?

[santu_voonna]

Hi All,

    I am pretty much new to IMX6SX and I have a basic query. Given a PAD and net name how to find out the input_reg which is mentioned in pinfunc.h ? 

#define MX6SX_PAD_NAND_CLE__ECSPI2_SCLK        0x014C    0x0494      0x0720        0x3         0x0

How could I derive from manual that input_reg is "0x0720" ??

[jimmychan]

input_reg here is the register of Input Select for DAISY.

The offset address of IOMUXC_ECSPI2_IPP_CSPI_CLK_IN_SELECT_INPUT is 720h.

When DAISY set to 0, the clock input of ECSPI2_IPP_CSPI_CLK will be selected from the pad NAND_CLE (ALT3 mode).

For more details, please read the Select Input Register in the i.MX6SX Reference Manual.