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authorClaudiu Beznea <claudiu.beznea@microchip.com>2019-02-14 16:54:41 +0100
committerLudovic Desroches <ludovic.desroches@microchip.com>2019-03-28 11:05:53 +0100
commit01c7031cfa7308c2a6d46636bda2e51be6474cf4 (patch)
tree3821515be5353d1ce47dcc251b7c393a976ff4f6 /arch/arm/mach-at91
parentdt-bindings: arm: atmel: add binding for SAM9X60 SoC (diff)
downloadlinux-01c7031cfa7308c2a6d46636bda2e51be6474cf4.tar.xz
linux-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>
Diffstat (limited to 'arch/arm/mach-at91')
-rw-r--r--arch/arm/mach-at91/at91sam9.c18
-rw-r--r--arch/arm/mach-at91/generic.h2
-rw-r--r--arch/arm/mach-at91/pm.c14
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))