ARM: PSCI: Support PSCI v0.2

Enhance the PSCI DT editing code to allow setting a PSCI v0.2 compatible
value in the DT. The CONFIG_ option is added to the whitelist to match the
existing PSCI_1_0 option. While not adding new options to Kconfig isn't
ideal, I figure it's better to keep related options together.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NTom Warren <twarren@nvidia.com>

arch/arm/lib/psci-dt.c

@@ -67,6 +67,8 @@ init_psci_node:
 	psci_ver = sec_firmware_support_psci_version();
 #elif defined(CONFIG_ARMV7_PSCI_1_0) || defined(CONFIG_ARMV8_PSCI)
 	psci_ver = ARM_PSCI_VER_1_0;
+#elif defined(CONFIG_ARMV7_PSCI_0_2)
+	psci_ver = ARM_PSCI_VER_0_2;
 #endif
 	if (psci_ver >= ARM_PSCI_VER_1_0) {
 		tmp = fdt_setprop_string(fdt, nodeoff,

scripts/config_whitelist.txt

@@ -51,6 +51,7 @@ CONFIG_ARMADA100
 CONFIG_ARMADA100_FEC
 CONFIG_ARMADA168
 CONFIG_ARMADA_39X
+CONFIG_ARMV7_PSCI_0_2
 CONFIG_ARMV7_PSCI_1_0
 CONFIG_ARMV7_SECURE_BASE
 CONFIG_ARMV7_SECURE_MAX_SIZE