AM3358中怎样使用GPMC ad[7,0]这些引脚？

xing chen2

Prodigy 40 points

Other Parts Discussed in Thread: AM3358

在AM3358中 GPMC ad[7,0]以及GPMC的使能信号线被nand flash占用了，怎样在系统启动后使用GPMC ad[7,0]，软件部分需要修改那些内容？内核应该怎样改？

11 年多前

0 Gino E 11 年多前

TI__Intellectual 2030 points

你好，

软件上要更改这个脚对应的pinmux，并设置这些功能为GPMC AD[7：0]以及片选信号，

你可以在arch/arm/mach-omap2/board-am335xevm.c中更改，我们其实在这个文件里面已经预先有设置。

0 xing chen2 11 年多前回复 Gino E

Prodigy 40 points

但是这些引脚已经被nand 占用，已经存在一这个文件中了

/* Pin mux for nand flash module */
static struct pinmux_config nand_pin_mux[] = {
{"gpmc_ad0.gpmc_ad0", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},
{"gpmc_ad1.gpmc_ad1", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},
{"gpmc_ad2.gpmc_ad2", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},
{"gpmc_ad3.gpmc_ad3", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},
{"gpmc_ad4.gpmc_ad4", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},
{"gpmc_ad5.gpmc_ad5", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},
{"gpmc_ad6.gpmc_ad6", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},
{"gpmc_ad7.gpmc_ad7", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},
{"gpmc_wait0.gpmc_wait0", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},
{"gpmc_wpn.gpmc_wpn", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},
{"gpmc_csn0.gpmc_csn0", OMAP_MUX_MODE0 | AM33XX_PULL_DISA},
{"gpmc_advn_ale.gpmc_advn_ale", OMAP_MUX_MODE0 | AM33XX_PULL_DISA},
{"gpmc_oen_ren.gpmc_oen_ren", OMAP_MUX_MODE0 | AM33XX_PULL_DISA},
{"gpmc_wen.gpmc_wen", OMAP_MUX_MODE0 | AM33XX_PULL_DISA},
{"gpmc_ben0_cle.gpmc_ben0_cle", OMAP_MUX_MODE0 | AM33XX_PULL_DISA},
{NULL, 0},
};