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- MPC8250 :: UART4 communication issue with spi driver
MPC8250 :: UART4 communication issue with spi driver
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We are having a custom board with MPC8250 processor , we have connected UART4 of the processor with a module also we are having a spi slave connected to the CPU . Both the slave devices UART as well as spi can be accessed independently using the driver interface. However as soon as both the drivers are uploaded the kernel throws exception and the communication with the slave devices stop. Is there any limitation in the processor when working with UART4 and SPI simultaneously?
I have attached kernel exception dump, uart settings done for mpc8260, spi_driver code.
Solved! Go to Solution.
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The issue was the DP RAM address was conflicting with UART4 , on modifying dp ram addr used for spi . The issue was not observed again.
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The issue was the DP RAM address was conflicting with UART4 , on modifying dp ram addr used for spi . The issue was not observed again.
Pavel
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The MPC8260 hardware supports using SCC4 UART and SPI simultaneously.
Is there similar problem if different SCC UART is used?
Test your board using different SCC UART.
Is it NXP software?
