OMAP3530 PAD CONFIG

OMAP3530 引脚配置

在系统控制模块中。

一共16个位控制一个引脚，包括上拉下拉、输入输出使能等配置。

在Linux中对应的宏定义如下：

/* 24xx/34xx mux bit defines */
#define OMAP2_PULL_ENA (1 << 3)
#define OMAP2_PULL_UP (1 << 4)
#define OMAP2_ALTELECTRICALSEL (1 << 5)

/* 34xx specific mux bit defines */
#define OMAP3_INPUT_EN (1 << 8)
#define OMAP3_OFF_EN (1 << 9)
#define OMAP3_OFFOUT_EN (1 << 10)
#define OMAP3_OFFOUT_VAL (1 << 11)
#define OMAP3_OFF_PULL_EN (1 << 12)
#define OMAP3_OFF_PULL_UP (1 << 13)
#define OMAP3_WAKEUP_EN (1 << 14)


引脚的模式配置：

/* 34xx mux mode options for each pin. See TRM for options */
#define OMAP34XX_MUX_MODE0 0
#define OMAP34XX_MUX_MODE1 1
#define OMAP34XX_MUX_MODE2 2
#define OMAP34XX_MUX_MODE3 3
#define OMAP34XX_MUX_MODE4 4
#define OMAP34XX_MUX_MODE5 5
#define OMAP34XX_MUX_MODE6 6
#define OMAP34XX_MUX_MODE7 7


组合宏定义：

/* 34xx active pin states */
#define OMAP34XX_PIN_OUTPUT 0
#define OMAP34XX_PIN_INPUT OMAP3_INPUT_EN
#define OMAP34XX_PIN_INPUT_PULLUP (OMAP2_PULL_ENA | OMAP3_INPUT_EN \
                                                | OMAP2_PULL_UP)
#define OMAP34XX_PIN_INPUT_PULLDOWN (OMAP2_PULL_ENA | OMAP3_INPUT_EN)

/* 34xx off mode states */
#define OMAP34XX_PIN_OFF_NONE 0
#define OMAP34XX_PIN_OFF_OUTPUT_HIGH (OMAP3_OFF_EN | OMAP3_OFFOUT_EN \
                                                | OMAP3_OFFOUT_VAL)
#define OMAP34XX_PIN_OFF_OUTPUT_LOW (OMAP3_OFF_EN | OMAP3_OFFOUT_EN)
#define OMAP34XX_PIN_OFF_INPUT_PULLUP (OMAP3_OFF_EN | OMAP3_OFF_PULL_EN \
                                                | OMAP3_OFF_PULL_UP)
#define OMAP34XX_PIN_OFF_INPUT_PULLDOWN (OMAP3_OFF_EN | OMAP3_OFF_PULL_EN)
#define OMAP34XX_PIN_OFF_WAKEUPENABLE OMAP3_WAKEUP_EN


配置宏：

#define MUX_CFG_34XX(desc, reg_offset, mux_value) { \
        .name = desc, \
        .debug = 0, \
        .mux_reg = reg_offset, \
        .mux_val = mux_value \
},