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Subject[PATCH v2.0 1/2] pm: at91: add the PM initialization for the sama5d3 and sama5d4
Date
To get the mpddrc peripheral id from the PM initialization,
which will be used to disable mpddrc'c clock during suspending.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
---
arch/arm/mach-at91/generic.h | 4 ++++
arch/arm/mach-at91/include/mach/sama5d3.h | 1 +
arch/arm/mach-at91/include/mach/sama5d4.h | 5 +++++
arch/arm/mach-at91/pm.c | 21 +++++++++++++++++++++
arch/arm/mach-at91/sama5.c | 8 +++++++-
5 files changed, 38 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-at91/generic.h b/arch/arm/mach-at91/generic.h
index 583369f..e12f6a6 100644
--- a/arch/arm/mach-at91/generic.h
+++ b/arch/arm/mach-at91/generic.h
@@ -34,11 +34,15 @@ extern void __init at91rm9200_pm_init(void);
extern void __init at91sam9260_pm_init(void);
extern void __init at91sam9g45_pm_init(void);
extern void __init at91sam9x5_pm_init(void);
+extern void __init sam5d3_pm_init(void);
+extern void __init sam5d4_pm_init(void);
#else
static inline void __init at91rm9200_pm_init(void) { }
static inline void __init at91sam9260_pm_init(void) { }
static inline void __init at91sam9g45_pm_init(void) { }
static inline void __init at91sam9x5_pm_init(void) { }
+static void __init sam5d3_pm_init(void) {}
+static void __init sam5d4_pm_init(void) {}
#endif

#endif /* _AT91_GENERIC_H */
diff --git a/arch/arm/mach-at91/include/mach/sama5d3.h b/arch/arm/mach-at91/include/mach/sama5d3.h
index 25613d8..5a383d8 100644
--- a/arch/arm/mach-at91/include/mach/sama5d3.h
+++ b/arch/arm/mach-at91/include/mach/sama5d3.h
@@ -63,6 +63,7 @@
#define SAMA5D3_ID_TDES 44 /* Triple Data Encryption Standard */
#define SAMA5D3_ID_TRNG 45 /* True Random Generator Number */
#define SAMA5D3_ID_IRQ0 47 /* Advanced Interrupt Controller (IRQ0) */
+#define SAMA5D3_ID_MPDDRC 49 /* MPDDR controller */

/*
* User Peripheral physical base addresses.
diff --git a/arch/arm/mach-at91/include/mach/sama5d4.h b/arch/arm/mach-at91/include/mach/sama5d4.h
index f256a45..e45f1b8 100644
--- a/arch/arm/mach-at91/include/mach/sama5d4.h
+++ b/arch/arm/mach-at91/include/mach/sama5d4.h
@@ -14,6 +14,11 @@
#define SAMA5D4_H

/*
+ * Peripheral identifiers/interrupts.
+ */
+#define SAMA5D4_ID_MPDDRC 16 /* MPDDR controller */
+
+/*
* User Peripheral physical base addresses.
*/
#define SAMA5D4_BASE_USART3 0xfc00c000 /* (USART3 non-secure) Base Address */
diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index ac947cd..e162bdf 100644
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -41,6 +41,8 @@
static struct {
unsigned long uhp_udp_mask;
int memctrl;
+ unsigned int ddrc_pid;
+ bool is_sama5d4;
} at91_pm_data;

void __iomem *at91_ramc_base[2];
@@ -350,3 +352,22 @@ void __init at91sam9x5_pm_init(void)
at91_pm_data.memctrl = AT91_MEMCTRL_DDRSDR;
return at91_pm_init();
}
+
+void __init sam5d3_pm_init(void)
+{
+ at91_dt_ramc();
+ at91_pm_data.uhp_udp_mask = AT91SAM926x_PMC_UHP | AT91SAM926x_PMC_UDP;
+ at91_pm_data.memctrl = AT91_MEMCTRL_DDRSDR;
+ at91_pm_data.ddrc_pid = SAMA5D3_ID_MPDDRC;
+ return at91_pm_init();
+}
+
+void __init sam5d4_pm_init(void)
+{
+ at91_dt_ramc();
+ at91_pm_data.uhp_udp_mask = AT91SAM926x_PMC_UHP | AT91SAM926x_PMC_UDP;
+ at91_pm_data.memctrl = AT91_MEMCTRL_DDRSDR;
+ at91_pm_data.ddrc_pid = SAMA5D4_ID_MPDDRC;
+ at91_pm_data.is_sama5d4 = true;
+ return at91_pm_init();
+}
diff --git a/arch/arm/mach-at91/sama5.c b/arch/arm/mach-at91/sama5.c
index 03dcb44..f0641ba 100644
--- a/arch/arm/mach-at91/sama5.c
+++ b/arch/arm/mach-at91/sama5.c
@@ -102,10 +102,16 @@ static const char *sama5_alt_dt_board_compat[] __initconst = {
NULL
};

+static void __init sama5d4_dt_device_init(void)
+{
+ of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+ sam5d4_pm_init();
+}
+
DT_MACHINE_START(sama5_alt_dt, "Atmel SAMA5")
/* Maintainer: Atmel */
.map_io = sama5_alt_map_io,
- .init_machine = sama5_dt_device_init,
+ .init_machine = sama5d4_dt_device_init,
.dt_compat = sama5_alt_dt_board_compat,
.l2c_aux_mask = ~0UL,
MACHINE_END
--
1.7.9.5


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