* Vaibhav Bedia <vaibhav.bedia@xxxxxx> [121102 05:35]: > On AM33XX, the mailbox module between the MPU and the > WKUP-M3 co-processor facilitates a one-way communication. > MPU uses the assigned mailbox sub-module to issue the > interrupt to the WKUP-M3 co-processor which then goes > and reads the the IPC data from registers in the control > module. > > WKUP-M3 is in the L4_WKUP and does not have any access to > the Mailbox module. Due to this limitation, the MPU is > completely responsible for FIFO maintenance and interrupt > generation. MPU needs to ensure that the FIFO does not > overflow by reading by the assigned mailbox sub-module. > > This patch adds an API in the mailbox code which the MPU > can use to empty the FIFO by issuing a readback command. > > Signed-off-by: Vaibhav Bedia <vaibhav.bedia@xxxxxx> > --- > arch/arm/mach-omap2/mailbox.c | 42 ++++++++++++++++++++--------- > arch/arm/plat-omap/include/plat/mailbox.h | 3 ++ > arch/arm/plat-omap/mailbox.c | 35 ++++++++++++++++++++++++ Patches have been posted to move the mailbox related files out of arch/arm, so you'll have to update those for that. Please see thread "[PATCH 0/2] ARM: OMAP: mailbox out of plat code" for more information. Regards, Tony -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
