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What is input select with iomux configure?

Question asked by Bernie Chen on Sep 10, 2015
Latest reply on Sep 10, 2015 by Bernie Chen

We configure UART1 to DTE mode, then we define pinmux in board-mx6q-sabresd.h

 

        MX6Q_PAD_CSI0_DAT10__UART1_TXD

        MX6Q_PAD_CSI0_DAT11__UART1_RXD

 

and there are defined in iomux-mx6q.h

 

      #define _MX6Q_PAD_CSI0_DAT10__UART1_TXD                        \

                IOMUX_PAD(0x0650, 0x0280, 3, 0x0000, 0, 0)

      #define _MX6Q_PAD_CSI0_DAT11__UART1_RXD                        \

                IOMUX_PAD(0x0654, 0x0284, 3, 0x0920,1, 0)

 

未命名.png

I can see description with  

MX6Q_PAD_CSI0_DAT10__UART1_TXD                        \

                IOMUX_PAD(0x0650, 0x0280, 3, 0x0000, 0, 0)

 

it describe pad-CSI0_DATA10 is routed to UART1_TX_DATA in DTE mode, so we can see IOMUX_PAD has argument with 0, it is make sense. but what is the other one ?

there is no explanation about 

 

MX6Q_PAD_CSI0_DAT11__UART1_RXD                        \

                IOMUX_PAD(0x0654, 0x0284, 3, 0x0920,1, 0)

 

I have not seeing any definition with DTE mode of UAR1_RXD

 

 

Thank you.

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