[U-Boot-Users] U-boot resets GPIO port registers on MPC8xx
Hi all,
I tried to configure pddat, pddir with the mw command on the u-boot prompt. Afterward I issued a reset command and when the u-boot restarts these value are changed to default values. Anyone knows which U-boot instruction causes this reset?.
Bye, Melinda.
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Hi Melinda,
u-boot-users-bounces@lists.sourceforge.net wrote on :
Hi all,
I tried to configure pddat, pddir with the mw command on the u-boot prompt. Afterward I issued a reset command and when the u-boot restarts these value are changed to default values. Anyone knows which U-boot instruction causes this reset?.
If you issue a reset command, the CPU is reset (this is what the command is good for ;-). And most CPU registers are set to default values during a reset. Take a look into your CPU manual which registers have which reset values.
Best Regards, Martin Krause
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participants (2)
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Martin Krause -
melinda develey