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| author | Clément Léger <clement.leger@bootlin.com> | 2022-05-02 17:22:19 +0200 |
|---|---|---|
| committer | Claudiu Beznea <claudiu.beznea@microchip.com> | 2022-05-12 13:50:50 +0200 |
| commit | f2f5cf78a3336f0245a1a59e641ce98fa9503db8 (patch) | |
| tree | 166af49a18459052bc70ce86a7bf1e74da7c65b0 /arch/arm/mach-at91/Kconfig | |
| parent | ARM: at91: add code to handle secure calls (diff) | |
| download | linux-f2f5cf78a3336f0245a1a59e641ce98fa9503db8.tar.xz linux-f2f5cf78a3336f0245a1a59e641ce98fa9503db8.zip | |
ARM: at91: pm: add support for sama5d2 secure suspend
When running with OP-TEE, the suspend control is handled securely.
Suspend can be entered using PSCI support. Since the sama5d2 supports
multiple suspend modes, add a new CONFIG_ATMEL_SECURE_PM which will
send a SMC call to select the suspend mode at init time.
"atmel.pm_modes" boot argument is still supported for compatibility
purposes but the standby value is actually ignored since PSCI suspend
is used and it only support one mode (suspend).
Signed-off-by: Clément Léger <clement.leger@bootlin.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Diffstat (limited to 'arch/arm/mach-at91/Kconfig')
| -rw-r--r-- | arch/arm/mach-at91/Kconfig | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig index 1531b4625c76..0edb60f7ccc6 100644 --- a/arch/arm/mach-at91/Kconfig +++ b/arch/arm/mach-at91/Kconfig @@ -218,7 +218,16 @@ config SOC_SAMA5 select SRAM if PM config ATMEL_PM - bool + bool "Atmel PM support" + +config ATMEL_SECURE_PM + bool "Atmel Secure PM support" + depends on SOC_SAMA5D2 && ATMEL_PM + select ARM_PSCI + help + When running under a TEE, the suspend mode must be requested to be set + at TEE level. When enable, this option will use secure monitor calls + to set the suspend level. PSCI is then used to enter suspend. config SOC_SAMA7 bool |