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Simple loopback message test for mailbox. **NOTE** DT Kernel patch required. Adapted from a test program written by Kevin Hilman: https://github.com/khilman/omap-test-mailbox and updated for v3.8.12 kernel mailbox framework. Tested on DRA7XX. Kernel Patch ============ The patch '0001-OMAP2-mailbox-convert-Slave-mailboxes-to-MPU-loopbac.patch' changes the USER, Tx and Rx fifo numbers of the slaves to cause the MPU to receive the messages destined for the slaves {ipu1,dsp1,ipu2,dsp2} of mailboxes 5 and 6. Usage ===== Load the test module using the 'name=' command-line argument with the name of one of the mailboxes listed in the DT mailbox name fields: "mbox-ipu1", "mbox-dsp1", "mbox-ipu2", "mbox-dsp2". # insmod mbox_test.ko name=mbox-ipu1 count=100 # rmmod mbox_test.ko By default, the test will send 16 test messages with an incremeting number as the message. The number of messages can be changed with the 'count=' command-line option at module load time.
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