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Message-ID: <1423709716-8576-1-git-send-email-wenyou.yang@atmel.com>
Date: Thu, 12 Feb 2015 10:55:16 +0800
From: Wenyou Yang <wenyou.yang@...el.com>
To: <nicolas.ferre@...el.com>, <linux@...im.org.za>,
<linux@....linux.org.uk>
CC: <linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>, <sylvain.rochet@...secur.com>,
<alexandre.belloni@...e-electrons.com>,
<patrice.vilchez@...el.com>, <sergei.shtylyov@...entembedded.com>,
<mark.rutland@....com>, <lorenzo.pieralisi@....com>,
<wenyou.yang@...el.com>
Subject: [PATCH 1/2] pm: at91: add the PM initialization for the sama5d3 and sama5d4
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@...el.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 | 10 ++++++++--
5 files changed, 39 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-at91/generic.h b/arch/arm/mach-at91/generic.h
index a6e726a..fa70811 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
void __init at91rm9200_pm_init(void) { }
void __init at91sam9260_pm_init(void) { }
void __init at91sam9g45_pm_init(void) { }
void __init at91sam9x5_pm_init(void) { }
+void __init sam5d3_pm_init(void) {}
+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 2574bad..7acb40e 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];
@@ -360,3 +362,22 @@ 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 228814a..4338d43 100644
--- a/arch/arm/mach-at91/sama5.c
+++ b/arch/arm/mach-at91/sama5.c
@@ -31,7 +31,7 @@
static void __init sama5_dt_device_init(void)
{
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
- at91sam9x5_pm_init();
+ sam5d3_pm_init();
}
static const char *sama5_dt_board_compat[] __initconst = {
@@ -84,10 +84,16 @@ 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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