Hi all,
I would like to make sure the pinmux setting of AM437x GP EVM.
I checked the following pins in the schematic and it looks like to be contradiction to
the AM437x datasheet and the actual 44e10800.pinmux setting in linux kernel included SDK.
After linux_SDK starting up, I checked the pin mode setting with the following command.
root@am437x-evm:/ cat /sys/kernel/debug/pinctrl/44e10800.pinmux/pins | grep "964"
I would like to know which setting is correct mode.
1. G24 pin
In Schematics: ECAP0_IN_PWM0_OUT to LCD backlight
Datasheet: eCAP0_in_PWM0_out: gpio0_7 > mode0x7
In resister: CTRL_CONF_ECAP0_IN_PWM0_OUT Register (Offset = 964h)=00000000
eCAP0_in_PWM0_out: eCAP0_in_PWM0_out> mode0x0
Is this pi settong Mode 7 or Mode 0?
2. D10 pin
In schematics: GPMC_WEN/GPIO to NAND_Wen
Datasheet: gpmc_wen: gpio2_4 > mode0x7
In resister: CTRL_CONF_GPMC_WEN Register (Offset = 898h)=00010000
gpmc_wen: gpmc_wen > mode0x0
Is this pi settong Mode 7 or Mode 0?
3. B9 pin
In schematics: GPMC_CSN1/MMC1_CLK to AM437X_MMC1CLK
Datasheet: gpmc_csn1: mmc1_clk > mode0x2
In resister: CTRL_CONF_GPMC_CSN1 Register (Offset = 880h)=08060007
gpmc_csn1: gpio1_30 > mode0x7
Is this pi settong Mode 2 or Mode 7?
4. F10 pin
In schematics: GPMC_CSN2/MMC1_CMD to AM437xMMC1CLK
Datasheet: gpmc_csn2：mmc1_cmd > mode0x2
CTRL_CONF_GPMC_CSN2 Register (Offset = 884h) =08060007
gpmc_csn2：gpio1_31 mode0x7
Is this pi settong Mode 2 or Mode 7?
Do I have to follow the resister settings?
Best regards,
Kanae
