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GPIO mappings for Tegra2.
From U-Boot you can read and write these GPIOs using the following commands.
gpio input <port in decimal> <bit>
gpio output <port in decimal> <bit> <0|1>
The rows with ??? at the end have not been tested yet.
The rows with !!! at the end have been tested but fail to behave as expected.
Function Pin Primary Name GPIO Name Port Bit
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Boot Select 0 AH11 GMI_AD12 GPIO_PH4 7 4
Boot Select 1 AG3 GMI_AD13 GPIO_PH5 7 5
Boot Select 2 AH9 GMI_AD14 GPIO_PH6 7 6
Boot Select 3 AH5 GMI_AD15 GPIO_PH7 7 7