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We are currently using generic PSP Mailbox register for sending SHA
complete command to PSP but observe random arbitration issue during
PSP validation as MP0_C2PMSG_26_REG used by other kernel modules.
Use separate mailbox registers and doorbell mechanism to send SHA_DMA
complete command to PSP. This fixes such validation issues and added
flexibility for sending more ACP commands to PSP in future as new mbox
registers i.e MP0_C2PMSG_114_REG and MP0_C2PMSG_73_REG are dedicated
by PSP for ACP communications.
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220421165820.337207-3-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
d2be77b382