Add explaination for the return value of psci_migrate_info_type: 2 = Trusted OS.
Signed-off-by: Patrick Delaunay patrick.delaunay@st.com ---
arch/arm/mach-stm32mp/psci.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-stm32mp/psci.c b/arch/arm/mach-stm32mp/psci.c index 6ed2482..c2dff38 100644 --- a/arch/arm/mach-stm32mp/psci.c +++ b/arch/arm/mach-stm32mp/psci.c @@ -103,7 +103,13 @@ int __secure psci_affinity_info(u32 function_id, u32 target_affinity,
int __secure psci_migrate_info_type(u32 function_id) { - /* Trusted OS is either not present or does not require migration */ + /* + * in Power_State_Coordination_Interface_PDD_v1_1_DEN0022D.pdf + * return 2 = Trusted OS is either not present or does not require + * migration, system of this type does not require the caller + * to use the MIGRATE function. + * MIGRATE function calls return NOT_SUPPORTED. + */ return 2; }