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| author | Claudiu Beznea <claudiu.beznea@microchip.com> | 2019-02-14 15:54:41 +0000 |
|---|---|---|
| committer | Ludovic Desroches <ludovic.desroches@microchip.com> | 2019-03-28 11:05:53 +0100 |
| commit | 01c7031cfa7308c2a6d46636bda2e51be6474cf4 (patch) | |
| tree | 3821515be5353d1ce47dcc251b7c393a976ff4f6 | |
| parent | db9630273f90a328eabef48fe46589b6af3f8ab9 (diff) | |
| download | linux-stable-01c7031cfa7308c2a6d46636bda2e51be6474cf4.tar.gz linux-stable-01c7031cfa7308c2a6d46636bda2e51be6474cf4.tar.bz2 linux-stable-01c7031cfa7308c2a6d46636bda2e51be6474cf4.zip | |
ARM: at91: pm: initial PM support for SAM9X60
Add initial PM support for SAM9X60. This include idle, WFI and ULP0.
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com>
| -rw-r--r-- | arch/arm/mach-at91/at91sam9.c | 18 | ||||
| -rw-r--r-- | arch/arm/mach-at91/generic.h | 2 | ||||
| -rw-r--r-- | arch/arm/mach-at91/pm.c | 14 |
3 files changed, 34 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/at91sam9.c b/arch/arm/mach-at91/at91sam9.c index 3dbdef4d3cbf..c12563b09656 100644 --- a/arch/arm/mach-at91/at91sam9.c +++ b/arch/arm/mach-at91/at91sam9.c @@ -32,3 +32,21 @@ DT_MACHINE_START(at91sam_dt, "Atmel AT91SAM9") .init_machine = at91sam9_init, .dt_compat = at91_dt_board_compat, MACHINE_END + +static void __init sam9x60_init(void) +{ + of_platform_default_populate(NULL, NULL, NULL); + + sam9x60_pm_init(); +} + +static const char *const sam9x60_dt_board_compat[] __initconst = { + "microchip,sam9x60", + NULL +}; + +DT_MACHINE_START(sam9x60_dt, "Microchip SAM9X60") + /* Maintainer: Microchip */ + .init_machine = sam9x60_init, + .dt_compat = sam9x60_dt_board_compat, +MACHINE_END diff --git a/arch/arm/mach-at91/generic.h b/arch/arm/mach-at91/generic.h index e2bd17237964..72b45accfa0f 100644 --- a/arch/arm/mach-at91/generic.h +++ b/arch/arm/mach-at91/generic.h @@ -14,11 +14,13 @@ #ifdef CONFIG_PM extern void __init at91rm9200_pm_init(void); extern void __init at91sam9_pm_init(void); +extern void __init sam9x60_pm_init(void); extern void __init sama5_pm_init(void); extern void __init sama5d2_pm_init(void); #else static inline void __init at91rm9200_pm_init(void) { } static inline void __init at91sam9_pm_init(void) { } +static inline void __init sam9x60_pm_init(void) { } static inline void __init sama5_pm_init(void) { } static inline void __init sama5d2_pm_init(void) { } #endif diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c index ce2ff86968f6..e42db02eafe4 100644 --- a/arch/arm/mach-at91/pm.c +++ b/arch/arm/mach-at91/pm.c @@ -518,6 +518,11 @@ static void at91rm9200_idle(void) writel(AT91_PMC_PCK, soc_pm.data.pmc + AT91_PMC_SCDR); } +static void at91sam9x60_idle(void) +{ + cpu_do_idle(); +} + static void at91sam9_idle(void) { writel(AT91_PMC_PCK, soc_pm.data.pmc + AT91_PMC_SCDR); @@ -754,6 +759,15 @@ void __init at91rm9200_pm_init(void) at91_pm_init(at91rm9200_idle); } +void __init sam9x60_pm_init(void) +{ + if (!IS_ENABLED(CONFIG_SOC_AT91SAM9)) + return; + + at91_dt_ramc(); + at91_pm_init(at91sam9x60_idle); +} + void __init at91sam9_pm_init(void) { if (!IS_ENABLED(CONFIG_SOC_AT91SAM9)) |