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This change adds support for passing shmem channel address as parameters in smc/hvc call. The address is split into 4KB-page and offset. This is useful when multiple scmi instances are using same smc-id and firmware needs to distinguish among the instances. Signed-off-by: Nikunj Kela <quic_nkela@quicinc.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Link: https://lore.kernel.org/r/20230506182428.25343-3-quic_nkela@quicinc.com Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>