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authorArnd Bergmann <arnd@arndb.de>2014-07-26 18:17:08 +0200
committerArnd Bergmann <arnd@arndb.de>2014-07-26 18:17:08 +0200
commit39fbf984089e27ec102e246a03c247b7bbd063bd (patch)
treee52897f6b148121c89d933f9a7c7efe84672cf82
parentdffd7e35a50d1f8fd79805dd10d412a041f67cb3 (diff)
parentb6e9f521902970732eed7038a1a76354c89daf06 (diff)
downloadop-kernel-dev-39fbf984089e27ec102e246a03c247b7bbd063bd.zip
op-kernel-dev-39fbf984089e27ec102e246a03c247b7bbd063bd.tar.gz
Merge tag 'mvebu-soc-3.17-4' of git://git.infradead.org/linux-mvebu into next/soc
Merge "mvebu SoC changes for v3.17 (round 4)" from Jason Cooper: - Armada XP - Fix return value check in pmsu code - Document URLs for new public datasheets (Thanks, Marvell & free-electrons!) - Armada 370/38x - Add cpuidle support - mvebu - Fix build when no platforms are selected - Update EBU SoC status in docs * tag 'mvebu-soc-3.17-4' of git://git.infradead.org/linux-mvebu: (21 commits) Documentation: arm: misc updates to Marvell EBU SoC status Documentation: arm: add URLs to public datasheets for the Marvell Armada XP SoC ARM: mvebu: fix build without platforms selected ARM: mvebu: add cpuidle support for Armada 38x ARM: mvebu: add cpuidle support for Armada 370 cpuidle: mvebu: add Armada 38x support cpuidle: mvebu: add Armada 370 support cpuidle: mvebu: rename the driver from armada-370-xp to mvebu-v7 ARM: mvebu: export the SCU address ARM: mvebu: make the snoop disabling optional in mvebu_v7_pmsu_idle_prepare() ARM: mvebu: use a local variable to store the resume address ARM: mvebu: make the cpuidle initialization more generic ARM: mvebu: rename the armada_370_xp symbols to mvebu_v7 in pmsu.c ARM: mvebu: use the common function for Armada 375 SMP workaround ARM: mvebu: add a common function for the boot address work around ARM: mvebu: sort the #include of pmsu.c in alphabetic order ARM: mvebu: split again armada_370_xp_pmsu_idle_enter() in PMSU code ARM: mvebu: fix return value check in armada_xp_pmsu_cpufreq_init() clk: mvebu: extend clk-cpu for dynamic frequency scaling ARM: mvebu: extend PMSU code to support dynamic frequency scaling ... Conflicts: arch/arm/mach-mvebu/Kconfig drivers/cpuidle/cpuidle-armada-370-xp.c Signed-off-by: Arnd Bergmann <arnd@arndb.de>
-rw-r--r--Documentation/arm/Marvell/README19
-rw-r--r--Documentation/devicetree/bindings/clock/mvebu-cpu-clock.txt5
-rw-r--r--arch/arm/mach-mvebu/Kconfig6
-rw-r--r--arch/arm/mach-mvebu/Makefile2
-rw-r--r--arch/arm/mach-mvebu/armada-370-xp.h1
-rw-r--r--arch/arm/mach-mvebu/board-v7.c9
-rw-r--r--arch/arm/mach-mvebu/common.h2
-rw-r--r--arch/arm/mach-mvebu/headsmp-a9.S15
-rw-r--r--arch/arm/mach-mvebu/platsmp-a9.c42
-rw-r--r--arch/arm/mach-mvebu/platsmp.c3
-rw-r--r--arch/arm/mach-mvebu/pmsu.c435
-rw-r--r--arch/arm/mach-mvebu/pmsu.h5
-rw-r--r--arch/arm/mach-mvebu/pmsu_ll.S36
-rw-r--r--arch/arm/mach-mvebu/system-controller.c31
-rw-r--r--drivers/clk/mvebu/clk-cpu.c80
-rw-r--r--drivers/cpuidle/Kconfig.arm12
-rw-r--r--drivers/cpuidle/Makefile2
-rw-r--r--drivers/cpuidle/cpuidle-armada-370-xp.c93
-rw-r--r--drivers/cpuidle/cpuidle-mvebu-v7.c150
-rw-r--r--include/linux/mvebu-pmsu.h20
20 files changed, 757 insertions, 211 deletions
diff --git a/Documentation/arm/Marvell/README b/Documentation/arm/Marvell/README
index 1af3a5d..4dc66c1 100644
--- a/Documentation/arm/Marvell/README
+++ b/Documentation/arm/Marvell/README
@@ -53,8 +53,8 @@ Kirkwood family
Functional Spec: http://www.marvell.com/embedded-processors/kirkwood/assets/FS_88F6180_9x_6281_OpenSource.pdf
Homepage: http://www.marvell.com/embedded-processors/kirkwood/
Core: Feroceon ARMv5 compatible
- Linux kernel mach directory: arch/arm/mach-kirkwood
- Linux kernel plat directory: arch/arm/plat-orion
+ Linux kernel mach directory: arch/arm/mach-mvebu
+ Linux kernel plat directory: none
Discovery family
----------------
@@ -102,8 +102,7 @@ EBU Armada family
MV78460
NOTE: not to be confused with the non-SMP 78xx0 SoCs
Product Brief: http://www.marvell.com/embedded-processors/armada-xp/assets/Marvell-ArmadaXP-SoC-product%20brief.pdf
-
- No public datasheet available.
+ Functional Spec: http://www.marvell.com/embedded-processors/armada-xp/assets/ARMADA-XP-Functional-SpecDatasheet.pdf
Core: Sheeva ARMv7 compatible
@@ -137,7 +136,9 @@ Dove family (application processor)
Functional Spec : http://www.marvell.com/application-processors/armada-500/assets/Armada-510-Functional-Spec.pdf
Homepage: http://www.marvell.com/application-processors/armada-500/
Core: ARMv7 compatible
- Directory: arch/arm/mach-dove
+
+ Directory: arch/arm/mach-mvebu (DT enabled platforms)
+ arch/arm/mach-dove (non-DT enabled platforms)
PXA 2xx/3xx/93x/95x family
--------------------------
@@ -255,10 +256,10 @@ Berlin family (Digital Entertainment)
Long-term plans
---------------
- * Unify the mach-dove/, mach-mv78xx0/, mach-orion5x/ and
- mach-kirkwood/ into the mach-mvebu/ to support all SoCs from the
- Marvell EBU (Engineering Business Unit) in a single mach-<foo>
- directory. The plat-orion/ would therefore disappear.
+ * Unify the mach-dove/, mach-mv78xx0/, mach-orion5x/ into the
+ mach-mvebu/ to support all SoCs from the Marvell EBU (Engineering
+ Business Unit) in a single mach-<foo> directory. The plat-orion/
+ would therefore disappear.
* Unify the mach-mmp/ and mach-pxa/ into the same mach-pxa
directory. The plat-pxa/ would therefore disappear.
diff --git a/Documentation/devicetree/bindings/clock/mvebu-cpu-clock.txt b/Documentation/devicetree/bindings/clock/mvebu-cpu-clock.txt
index feb8301..99c2146 100644
--- a/Documentation/devicetree/bindings/clock/mvebu-cpu-clock.txt
+++ b/Documentation/devicetree/bindings/clock/mvebu-cpu-clock.txt
@@ -3,14 +3,15 @@ Device Tree Clock bindings for cpu clock of Marvell EBU platforms
Required properties:
- compatible : shall be one of the following:
"marvell,armada-xp-cpu-clock" - cpu clocks for Armada XP
-- reg : Address and length of the clock complex register set
+- reg : Address and length of the clock complex register set, followed
+ by address and length of the PMU DFS registers
- #clock-cells : should be set to 1.
- clocks : shall be the input parent clock phandle for the clock.
cpuclk: clock-complex@d0018700 {
#clock-cells = <1>;
compatible = "marvell,armada-xp-cpu-clock";
- reg = <0xd0018700 0xA0>;
+ reg = <0xd0018700 0xA0>, <0x1c054 0x10>;
clocks = <&coreclk 1>;
}
diff --git a/arch/arm/mach-mvebu/Kconfig b/arch/arm/mach-mvebu/Kconfig
index 955d4a3..c1e4567 100644
--- a/arch/arm/mach-mvebu/Kconfig
+++ b/arch/arm/mach-mvebu/Kconfig
@@ -14,11 +14,15 @@ menuconfig ARCH_MVEBU
if ARCH_MVEBU
+config MACH_MVEBU_ANY
+ bool
+
config MACH_MVEBU_V7
bool
select ARMADA_370_XP_TIMER
select CACHE_L2X0
select ARM_CPU_SUSPEND
+ select MACH_MVEBU_ANY
config MACH_ARMADA_370
bool "Marvell Armada 370 boards" if ARCH_MULTI_V7
@@ -75,6 +79,7 @@ config MACH_DOVE
select CACHE_L2X0
select CPU_PJ4
select DOVE_CLK
+ select MACH_MVEBU_ANY
select ORION_IRQCHIP
select ORION_TIMER
select PINCTRL_DOVE
@@ -87,6 +92,7 @@ config MACH_KIRKWOOD
select ARCH_REQUIRE_GPIOLIB
select CPU_FEROCEON
select KIRKWOOD_CLK
+ select MACH_MVEBU_ANY
select ORION_IRQCHIP
select ORION_TIMER
select PCI
diff --git a/arch/arm/mach-mvebu/Makefile b/arch/arm/mach-mvebu/Makefile
index bc7689e..e24136b 100644
--- a/arch/arm/mach-mvebu/Makefile
+++ b/arch/arm/mach-mvebu/Makefile
@@ -4,7 +4,7 @@ ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/$(src)/include \
AFLAGS_coherency_ll.o := -Wa,-march=armv7-a
CFLAGS_pmsu.o := -march=armv7-a
-obj-y += system-controller.o mvebu-soc-id.o
+obj-$(CONFIG_MACH_MVEBU_ANY) += system-controller.o mvebu-soc-id.o
ifeq ($(CONFIG_MACH_MVEBU_V7),y)
obj-y += cpu-reset.o board-v7.o coherency.o coherency_ll.o pmsu.o pmsu_ll.o
diff --git a/arch/arm/mach-mvebu/armada-370-xp.h b/arch/arm/mach-mvebu/armada-370-xp.h
index 52c1603a..84cd90d 100644
--- a/arch/arm/mach-mvebu/armada-370-xp.h
+++ b/arch/arm/mach-mvebu/armada-370-xp.h
@@ -25,6 +25,5 @@ extern struct smp_operations armada_xp_smp_ops;
#endif
int armada_370_xp_pmsu_idle_enter(unsigned long deepidle);
-void armada_370_xp_pmsu_idle_exit(void);
#endif /* __MACH_ARMADA_370_XP_H */
diff --git a/arch/arm/mach-mvebu/board-v7.c b/arch/arm/mach-mvebu/board-v7.c
index f244622..6478626 100644
--- a/arch/arm/mach-mvebu/board-v7.c
+++ b/arch/arm/mach-mvebu/board-v7.c
@@ -34,14 +34,14 @@
#include "coherency.h"
#include "mvebu-soc-id.h"
+static void __iomem *scu_base;
+
/*
* Enables the SCU when available. Obviously, this is only useful on
* Cortex-A based SOCs, not on PJ4B based ones.
*/
static void __init mvebu_scu_enable(void)
{
- void __iomem *scu_base;
-
struct device_node *np =
of_find_compatible_node(NULL, NULL, "arm,cortex-a9-scu");
if (np) {
@@ -51,6 +51,11 @@ static void __init mvebu_scu_enable(void)
}
}
+void __iomem *mvebu_get_scu_base(void)
+{
+ return scu_base;
+}
+
/*
* Early versions of Armada 375 SoC have a bug where the BootROM
* leaves an external data abort pending. The kernel is hit by this
diff --git a/arch/arm/mach-mvebu/common.h b/arch/arm/mach-mvebu/common.h
index a97778e..3ccb40c 100644
--- a/arch/arm/mach-mvebu/common.h
+++ b/arch/arm/mach-mvebu/common.h
@@ -23,4 +23,6 @@ void mvebu_pmsu_set_cpu_boot_addr(int hw_cpu, void *boot_addr);
void mvebu_system_controller_set_cpu_boot_addr(void *boot_addr);
int mvebu_system_controller_get_soc_id(u32 *dev, u32 *rev);
+void __iomem *mvebu_get_scu_base(void);
+
#endif
diff --git a/arch/arm/mach-mvebu/headsmp-a9.S b/arch/arm/mach-mvebu/headsmp-a9.S
index da5bb29..be51c99 100644
--- a/arch/arm/mach-mvebu/headsmp-a9.S
+++ b/arch/arm/mach-mvebu/headsmp-a9.S
@@ -18,21 +18,6 @@
#include <asm/assembler.h>
__CPUINIT
-#define CPU_RESUME_ADDR_REG 0xf10182d4
-
-.global armada_375_smp_cpu1_enable_code_start
-.global armada_375_smp_cpu1_enable_code_end
-
-armada_375_smp_cpu1_enable_code_start:
-ARM_BE8(setend be)
- adr r0, 1f
- ldr r0, [r0]
- ldr r1, [r0]
-ARM_BE8(rev r1, r1)
- mov pc, r1
-1:
- .word CPU_RESUME_ADDR_REG
-armada_375_smp_cpu1_enable_code_end:
ENTRY(mvebu_cortex_a9_secondary_startup)
ARM_BE8(setend be)
diff --git a/arch/arm/mach-mvebu/platsmp-a9.c b/arch/arm/mach-mvebu/platsmp-a9.c
index 43aaf3f..47a71a9 100644
--- a/arch/arm/mach-mvebu/platsmp-a9.c
+++ b/arch/arm/mach-mvebu/platsmp-a9.c
@@ -20,33 +20,8 @@
#include <asm/smp_scu.h>
#include <asm/smp_plat.h>
#include "common.h"
-#include "mvebu-soc-id.h"
#include "pmsu.h"
-#define CRYPT0_ENG_ID 41
-#define CRYPT0_ENG_ATTR 0x1
-#define SRAM_PHYS_BASE 0xFFFF0000
-
-#define BOOTROM_BASE 0xFFF00000
-#define BOOTROM_SIZE 0x100000
-
-extern unsigned char armada_375_smp_cpu1_enable_code_end;
-extern unsigned char armada_375_smp_cpu1_enable_code_start;
-
-static void armada_375_smp_cpu1_enable_wa(void)
-{
- void __iomem *sram_virt_base;
-
- mvebu_mbus_del_window(BOOTROM_BASE, BOOTROM_SIZE);
- mvebu_mbus_add_window_by_id(CRYPT0_ENG_ID, CRYPT0_ENG_ATTR,
- SRAM_PHYS_BASE, SZ_64K);
- sram_virt_base = ioremap(SRAM_PHYS_BASE, SZ_64K);
-
- memcpy(sram_virt_base, &armada_375_smp_cpu1_enable_code_start,
- &armada_375_smp_cpu1_enable_code_end
- - &armada_375_smp_cpu1_enable_code_start);
-}
-
extern void mvebu_cortex_a9_secondary_startup(void);
static int __cpuinit mvebu_cortex_a9_boot_secondary(unsigned int cpu,
@@ -63,21 +38,10 @@ static int __cpuinit mvebu_cortex_a9_boot_secondary(unsigned int cpu,
* address.
*/
hw_cpu = cpu_logical_map(cpu);
-
- if (of_machine_is_compatible("marvell,armada375")) {
- u32 dev, rev;
-
- if (mvebu_get_soc_id(&dev, &rev) == 0 &&
- rev == ARMADA_375_Z1_REV)
- armada_375_smp_cpu1_enable_wa();
-
+ if (of_machine_is_compatible("marvell,armada375"))
mvebu_system_controller_set_cpu_boot_addr(mvebu_cortex_a9_secondary_startup);
- }
- else {
- mvebu_pmsu_set_cpu_boot_addr(hw_cpu,
- mvebu_cortex_a9_secondary_startup);
- }
-
+ else
+ mvebu_pmsu_set_cpu_boot_addr(hw_cpu, mvebu_cortex_a9_secondary_startup);
smp_wmb();
ret = mvebu_cpu_reset_deassert(hw_cpu);
if (ret) {
diff --git a/arch/arm/mach-mvebu/platsmp.c b/arch/arm/mach-mvebu/platsmp.c
index b6fa9f0..895dc37 100644
--- a/arch/arm/mach-mvebu/platsmp.c
+++ b/arch/arm/mach-mvebu/platsmp.c
@@ -67,6 +67,7 @@ static void __init set_secondary_cpus_clock(void)
if (!cpu_clk)
return;
clk_set_rate(cpu_clk, rate);
+ clk_prepare_enable(cpu_clk);
}
}
@@ -108,7 +109,7 @@ static int armada_xp_boot_secondary(unsigned int cpu, struct task_struct *idle)
*/
static void armada_xp_secondary_init(unsigned int cpu)
{
- armada_370_xp_pmsu_idle_exit();
+ mvebu_v7_pmsu_idle_exit();
}
static void __init armada_xp_smp_init_cpus(void)
diff --git a/arch/arm/mach-mvebu/pmsu.c b/arch/arm/mach-mvebu/pmsu.c
index b31a829..8a70a51 100644
--- a/arch/arm/mach-mvebu/pmsu.c
+++ b/arch/arm/mach-mvebu/pmsu.c
@@ -18,22 +18,29 @@
#define pr_fmt(fmt) "mvebu-pmsu: " fmt
+#include <linux/clk.h>
#include <linux/cpu_pm.h>
-#include <linux/kernel.h>
+#include <linux/delay.h>
#include <linux/init.h>
-#include <linux/of_address.h>
#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/mbus.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
#include <linux/platform_device.h>
-#include <linux/smp.h>
+#include <linux/pm_opp.h>
#include <linux/resource.h>
+#include <linux/slab.h>
+#include <linux/smp.h>
#include <asm/cacheflush.h>
#include <asm/cp15.h>
+#include <asm/smp_scu.h>
#include <asm/smp_plat.h>
#include <asm/suspend.h>
#include <asm/tlbflush.h>
#include "common.h"
+#include "armada-370-xp.h"
-static void __iomem *pmsu_mp_base;
#define PMSU_BASE_OFFSET 0x100
#define PMSU_REG_SIZE 0x1000
@@ -57,20 +64,45 @@ static void __iomem *pmsu_mp_base;
#define PMSU_STATUS_AND_MASK_IRQ_MASK BIT(24)
#define PMSU_STATUS_AND_MASK_FIQ_MASK BIT(25)
+#define PMSU_EVENT_STATUS_AND_MASK(cpu) ((cpu * 0x100) + 0x120)
+#define PMSU_EVENT_STATUS_AND_MASK_DFS_DONE BIT(1)
+#define PMSU_EVENT_STATUS_AND_MASK_DFS_DONE_MASK BIT(17)
+
#define PMSU_BOOT_ADDR_REDIRECT_OFFSET(cpu) ((cpu * 0x100) + 0x124)
/* PMSU fabric registers */
#define L2C_NFABRIC_PM_CTL 0x4
#define L2C_NFABRIC_PM_CTL_PWR_DOWN BIT(20)
+/* PMSU delay registers */
+#define PMSU_POWERDOWN_DELAY 0xF04
+#define PMSU_POWERDOWN_DELAY_PMU BIT(1)
+#define PMSU_POWERDOWN_DELAY_MASK 0xFFFE
+#define PMSU_DFLT_ARMADA38X_DELAY 0x64
+
+/* CA9 MPcore SoC Control registers */
+
+#define MPCORE_RESET_CTL 0x64
+#define MPCORE_RESET_CTL_L2 BIT(0)
+#define MPCORE_RESET_CTL_DEBUG BIT(16)
+
+#define SRAM_PHYS_BASE 0xFFFF0000
+#define BOOTROM_BASE 0xFFF00000
+#define BOOTROM_SIZE 0x100000
+
+#define ARMADA_370_CRYPT0_ENG_TARGET 0x9
+#define ARMADA_370_CRYPT0_ENG_ATTR 0x1
+
extern void ll_disable_coherency(void);
extern void ll_enable_coherency(void);
extern void armada_370_xp_cpu_resume(void);
+extern void armada_38x_cpu_resume(void);
-static struct platform_device armada_xp_cpuidle_device = {
- .name = "cpuidle-armada-370-xp",
-};
+static phys_addr_t pmsu_mp_phys_base;
+static void __iomem *pmsu_mp_base;
+
+static void *mvebu_cpu_resume;
static struct of_device_id of_pmsu_table[] = {
{ .compatible = "marvell,armada-370-pmsu", },
@@ -85,7 +117,49 @@ void mvebu_pmsu_set_cpu_boot_addr(int hw_cpu, void *boot_addr)
PMSU_BOOT_ADDR_REDIRECT_OFFSET(hw_cpu));
}
-static int __init armada_370_xp_pmsu_init(void)
+extern unsigned char mvebu_boot_wa_start;
+extern unsigned char mvebu_boot_wa_end;
+
+/*
+ * This function sets up the boot address workaround needed for SMP
+ * boot on Armada 375 Z1 and cpuidle on Armada 370. It unmaps the
+ * BootROM Mbus window, and instead remaps a crypto SRAM into which a
+ * custom piece of code is copied to replace the problematic BootROM.
+ */
+int mvebu_setup_boot_addr_wa(unsigned int crypto_eng_target,
+ unsigned int crypto_eng_attribute,
+ phys_addr_t resume_addr_reg)
+{
+ void __iomem *sram_virt_base;
+ u32 code_len = &mvebu_boot_wa_end - &mvebu_boot_wa_start;
+
+ mvebu_mbus_del_window(BOOTROM_BASE, BOOTROM_SIZE);
+ mvebu_mbus_add_window_by_id(crypto_eng_target, crypto_eng_attribute,
+ SRAM_PHYS_BASE, SZ_64K);
+
+ sram_virt_base = ioremap(SRAM_PHYS_BASE, SZ_64K);
+ if (!sram_virt_base) {
+ pr_err("Unable to map SRAM to setup the boot address WA\n");
+ return -ENOMEM;
+ }
+
+ memcpy(sram_virt_base, &mvebu_boot_wa_start, code_len);
+
+ /*
+ * The last word of the code copied in SRAM must contain the
+ * physical base address of the PMSU register. We
+ * intentionally store this address in the native endianness
+ * of the system.
+ */
+ __raw_writel((unsigned long)resume_addr_reg,
+ sram_virt_base + code_len - 4);
+
+ iounmap(sram_virt_base);
+
+ return 0;
+}
+
+static int __init mvebu_v7_pmsu_init(void)
{
struct device_node *np;
struct resource res;
@@ -116,6 +190,8 @@ static int __init armada_370_xp_pmsu_init(void)
goto out;
}
+ pmsu_mp_phys_base = res.start;
+
pmsu_mp_base = ioremap(res.start, resource_size(&res));
if (!pmsu_mp_base) {
pr_err("unable to map registers\n");
@@ -129,7 +205,7 @@ static int __init armada_370_xp_pmsu_init(void)
return ret;
}
-static void armada_370_xp_pmsu_enable_l2_powerdown_onidle(void)
+static void mvebu_v7_pmsu_enable_l2_powerdown_onidle(void)
{
u32 reg;
@@ -142,8 +218,14 @@ static void armada_370_xp_pmsu_enable_l2_powerdown_onidle(void)
writel(reg, pmsu_mp_base + L2C_NFABRIC_PM_CTL);
}
+enum pmsu_idle_prepare_flags {
+ PMSU_PREPARE_NORMAL = 0,
+ PMSU_PREPARE_DEEP_IDLE = BIT(0),
+ PMSU_PREPARE_SNOOP_DISABLE = BIT(1),
+};
+
/* No locking is needed because we only access per-CPU registers */
-int armada_370_xp_pmsu_idle_enter(unsigned long deepidle)
+static int mvebu_v7_pmsu_idle_prepare(unsigned long flags)
{
unsigned int hw_cpu = cpu_logical_map(smp_processor_id());
u32 reg;
@@ -167,17 +249,34 @@ int armada_370_xp_pmsu_idle_enter(unsigned long deepidle)
reg = readl(pmsu_mp_base + PMSU_CONTROL_AND_CONFIG(hw_cpu));
/* ask HW to power down the L2 Cache if needed */
- if (deepidle)
+ if (flags & PMSU_PREPARE_DEEP_IDLE)
reg |= PMSU_CONTROL_AND_CONFIG_L2_PWDDN;
/* request power down */
reg |= PMSU_CONTROL_AND_CONFIG_PWDDN_REQ;
writel(reg, pmsu_mp_base + PMSU_CONTROL_AND_CONFIG(hw_cpu));
- /* Disable snoop disable by HW - SW is taking care of it */
- reg = readl(pmsu_mp_base + PMSU_CPU_POWER_DOWN_CONTROL(hw_cpu));
- reg |= PMSU_CPU_POWER_DOWN_DIS_SNP_Q_SKIP;
- writel(reg, pmsu_mp_base + PMSU_CPU_POWER_DOWN_CONTROL(hw_cpu));
+ if (flags & PMSU_PREPARE_SNOOP_DISABLE) {
+ /* Disable snoop disable by HW - SW is taking care of it */
+ reg = readl(pmsu_mp_base + PMSU_CPU_POWER_DOWN_CONTROL(hw_cpu));
+ reg |= PMSU_CPU_POWER_DOWN_DIS_SNP_Q_SKIP;
+ writel(reg, pmsu_mp_base + PMSU_CPU_POWER_DOWN_CONTROL(hw_cpu));
+ }
+
+ return 0;
+}
+
+int armada_370_xp_pmsu_idle_enter(unsigned long deepidle)
+{
+ unsigned long flags = PMSU_PREPARE_SNOOP_DISABLE;
+ int ret;
+
+ if (deepidle)
+ flags |= PMSU_PREPARE_DEEP_IDLE;
+
+ ret = mvebu_v7_pmsu_idle_prepare(flags);
+ if (ret)
+ return ret;
v7_exit_coherency_flush(all);
@@ -203,7 +302,7 @@ int armada_370_xp_pmsu_idle_enter(unsigned long deepidle)
"isb "
: : : "r0");
- pr_warn("Failed to suspend the system\n");
+ pr_debug("Failed to suspend the system\n");
return 0;
}
@@ -213,15 +312,40 @@ static int armada_370_xp_cpu_suspend(unsigned long deepidle)
return cpu_suspend(deepidle, armada_370_xp_pmsu_idle_enter);
}
+static int armada_38x_do_cpu_suspend(unsigned long deepidle)
+{
+ unsigned long flags = 0;
+
+ if (deepidle)
+ flags |= PMSU_PREPARE_DEEP_IDLE;
+
+ mvebu_v7_pmsu_idle_prepare(flags);
+ /*
+ * Already flushed cache, but do it again as the outer cache
+ * functions dirty the cache with spinlocks
+ */
+ v7_exit_coherency_flush(louis);
+
+ scu_power_mode(mvebu_get_scu_base(), SCU_PM_POWEROFF);
+
+ cpu_do_idle();
+
+ return 1;
+}
+
+static int armada_38x_cpu_suspend(unsigned long deepidle)
+{
+ return cpu_suspend(false, armada_38x_do_cpu_suspend);
+}
+
/* No locking is needed because we only access per-CPU registers */
-void armada_370_xp_pmsu_idle_exit(void)
+void mvebu_v7_pmsu_idle_exit(void)
{
unsigned int hw_cpu = cpu_logical_map(smp_processor_id());
u32 reg;
if (pmsu_mp_base == NULL)
return;
-
/* cancel ask HW to power down the L2 Cache if possible */
reg = readl(pmsu_mp_base + PMSU_CONTROL_AND_CONFIG(hw_cpu));
reg &= ~PMSU_CONTROL_AND_CONFIG_L2_PWDDN;
@@ -236,53 +360,292 @@ void armada_370_xp_pmsu_idle_exit(void)
writel(reg, pmsu_mp_base + PMSU_STATUS_AND_MASK(hw_cpu));
}
-static int armada_370_xp_cpu_pm_notify(struct notifier_block *self,
+static int mvebu_v7_cpu_pm_notify(struct notifier_block *self,
unsigned long action, void *hcpu)
{
if (action == CPU_PM_ENTER) {
unsigned int hw_cpu = cpu_logical_map(smp_processor_id());
- mvebu_pmsu_set_cpu_boot_addr(hw_cpu, armada_370_xp_cpu_resume);
+ mvebu_pmsu_set_cpu_boot_addr(hw_cpu, mvebu_cpu_resume);
} else if (action == CPU_PM_EXIT) {
- armada_370_xp_pmsu_idle_exit();
+ mvebu_v7_pmsu_idle_exit();
}
return NOTIFY_OK;
}
-static struct notifier_block armada_370_xp_cpu_pm_notifier = {
- .notifier_call = armada_370_xp_cpu_pm_notify,
+static struct notifier_block mvebu_v7_cpu_pm_notifier = {
+ .notifier_call = mvebu_v7_cpu_pm_notify,
};
-static int __init armada_370_xp_cpu_pm_init(void)
+static struct platform_device mvebu_v7_cpuidle_device;
+
+static __init int armada_370_cpuidle_init(void)
{
struct device_node *np;
+ phys_addr_t redirect_reg;
+
+ np = of_find_compatible_node(NULL, NULL, "marvell,coherency-fabric");
+ if (!np)
+ return -ENODEV;
+ of_node_put(np);
/*
- * Check that all the requirements are available to enable
- * cpuidle. So far, it is only supported on Armada XP, cpuidle
- * needs the coherency fabric and the PMSU enabled
+ * On Armada 370, there is "a slow exit process from the deep
+ * idle state due to heavy L1/L2 cache cleanup operations
+ * performed by the BootROM software". To avoid this, we
+ * replace the restart code of the bootrom by a a simple jump
+ * to the boot address. Then the code located at this boot
+ * address will take care of the initialization.
*/
+ redirect_reg = pmsu_mp_phys_base + PMSU_BOOT_ADDR_REDIRECT_OFFSET(0);
+ mvebu_setup_boot_addr_wa(ARMADA_370_CRYPT0_ENG_TARGET,
+ ARMADA_370_CRYPT0_ENG_ATTR,
+ redirect_reg);
- if (!of_machine_is_compatible("marvell,armadaxp"))
- return 0;
+ mvebu_cpu_resume = armada_370_xp_cpu_resume;
+ mvebu_v7_cpuidle_device.dev.platform_data = armada_370_xp_cpu_suspend;
+ mvebu_v7_cpuidle_device.name = "cpuidle-armada-370";
+
+ return 0;
+}
+
+static __init int armada_38x_cpuidle_init(void)
+{
+ struct device_node *np;
+ void __iomem *mpsoc_base;
+ u32 reg;
+
+ np = of_find_compatible_node(NULL, NULL,
+ "marvell,armada-380-coherency-fabric");
+ if (!np)
+ return -ENODEV;
+ of_node_put(np);
+
+ np = of_find_compatible_node(NULL, NULL,
+ "marvell,armada-380-mpcore-soc-ctrl");
+ if (!np)
+ return -ENODEV;
+ mpsoc_base = of_iomap(np, 0);
+ BUG_ON(!mpsoc_base);
+ of_node_put(np);
+
+ /* Set up reset mask when powering down the cpus */
+ reg = readl(mpsoc_base + MPCORE_RESET_CTL);
+ reg |= MPCORE_RESET_CTL_L2;
+ reg |= MPCORE_RESET_CTL_DEBUG;
+ writel(reg, mpsoc_base + MPCORE_RESET_CTL);
+ iounmap(mpsoc_base);
+
+ /* Set up delay */
+ reg = readl(pmsu_mp_base + PMSU_POWERDOWN_DELAY);
+ reg &= ~PMSU_POWERDOWN_DELAY_MASK;
+ reg |= PMSU_DFLT_ARMADA38X_DELAY;
+ reg |= PMSU_POWERDOWN_DELAY_PMU;
+ writel(reg, pmsu_mp_base + PMSU_POWERDOWN_DELAY);
+
+ mvebu_cpu_resume = armada_38x_cpu_resume;
+ mvebu_v7_cpuidle_device.dev.platform_data = armada_38x_cpu_suspend;
+ mvebu_v7_cpuidle_device.name = "cpuidle-armada-38x";
+
+ return 0;
+}
+
+static __init int armada_xp_cpuidle_init(void)
+{
+ struct device_node *np;
np = of_find_compatible_node(NULL, NULL, "marvell,coherency-fabric");
if (!np)
- return 0;
+ return -ENODEV;
of_node_put(np);
+ mvebu_cpu_resume = armada_370_xp_cpu_resume;
+ mvebu_v7_cpuidle_device.dev.platform_data = armada_370_xp_cpu_suspend;
+ mvebu_v7_cpuidle_device.name = "cpuidle-armada-xp";
+
+ return 0;
+}
+
+static int __init mvebu_v7_cpu_pm_init(void)
+{
+ struct device_node *np;
+ int ret;
+
np = of_find_matching_node(NULL, of_pmsu_table);
if (!np)
return 0;
of_node_put(np);
- armada_370_xp_pmsu_enable_l2_powerdown_onidle();
- armada_xp_cpuidle_device.dev.platform_data = armada_370_xp_cpu_suspend;
- platform_device_register(&armada_xp_cpuidle_device);
- cpu_pm_register_notifier(&armada_370_xp_cpu_pm_notifier);
+ if (of_machine_is_compatible("marvell,armadaxp"))
+ ret = armada_xp_cpuidle_init();
+ else if (of_machine_is_compatible("marvell,armada370"))
+ ret = armada_370_cpuidle_init();
+ else if (of_machine_is_compatible("marvell,armada380"))
+ ret = armada_38x_cpuidle_init();
+ else
+ return 0;
+
+ if (ret)
+ return ret;
+
+ mvebu_v7_pmsu_enable_l2_powerdown_onidle();
+ platform_device_register(&mvebu_v7_cpuidle_device);
+ cpu_pm_register_notifier(&mvebu_v7_cpu_pm_notifier);
+
+ return 0;
+}
+
+arch_initcall(mvebu_v7_cpu_pm_init);
+early_initcall(mvebu_v7_pmsu_init);
+
+static void mvebu_pmsu_dfs_request_local(void *data)
+{
+ u32 reg;
+ u32 cpu = smp_processor_id();
+ unsigned long flags;
+
+ local_irq_save(flags);
+
+ /* Prepare to enter idle */
+ reg = readl(pmsu_mp_base + PMSU_STATUS_AND_MASK(cpu));
+ reg |= PMSU_STATUS_AND_MASK_CPU_IDLE_WAIT |
+ PMSU_STATUS_AND_MASK_IRQ_MASK |
+ PMSU_STATUS_AND_MASK_FIQ_MASK;
+ writel(reg, pmsu_mp_base + PMSU_STATUS_AND_MASK(cpu));
+
+ /* Request the DFS transition */
+ reg = readl(pmsu_mp_base + PMSU_CONTROL_AND_CONFIG(cpu));
+ reg |= PMSU_CONTROL_AND_CONFIG_DFS_REQ;
+ writel(reg, pmsu_mp_base + PMSU_CONTROL_AND_CONFIG(cpu));
+
+ /* The fact of entering idle will trigger the DFS transition */
+ wfi();
+
+ /*
+ * We're back from idle, the DFS transition has completed,
+ * clear the idle wait indication.
+ */
+ reg = readl(pmsu_mp_base + PMSU_STATUS_AND_MASK(cpu));
+ reg &= ~PMSU_STATUS_AND_MASK_CPU_IDLE_WAIT;
+ writel(reg, pmsu_mp_base + PMSU_STATUS_AND_MASK(cpu));
+
+ local_irq_restore(flags);
+}
+
+int mvebu_pmsu_dfs_request(int cpu)
+{
+ unsigned long timeout;
+ int hwcpu = cpu_logical_map(cpu);
+ u32 reg;
+
+ /* Clear any previous DFS DONE event */
+ reg = readl(pmsu_mp_base + PMSU_EVENT_STATUS_AND_MASK(hwcpu));
+ reg &= ~PMSU_EVENT_STATUS_AND_MASK_DFS_DONE;
+ writel(reg, pmsu_mp_base + PMSU_EVENT_STATUS_AND_MASK(hwcpu));
+
+ /* Mask the DFS done interrupt, since we are going to poll */
+ reg = readl(pmsu_mp_base + PMSU_EVENT_STATUS_AND_MASK(hwcpu));
+ reg |= PMSU_EVENT_STATUS_AND_MASK_DFS_DONE_MASK;
+ writel(reg, pmsu_mp_base + PMSU_EVENT_STATUS_AND_MASK(hwcpu));
+
+ /* Trigger the DFS on the appropriate CPU */
+ smp_call_function_single(cpu, mvebu_pmsu_dfs_request_local,
+ NULL, false);
+
+ /* Poll until the DFS done event is generated */
+ timeout = jiffies + HZ;
+ while (time_before(jiffies, timeout)) {
+ reg = readl(pmsu_mp_base + PMSU_EVENT_STATUS_AND_MASK(hwcpu));
+ if (reg & PMSU_EVENT_STATUS_AND_MASK_DFS_DONE)
+ break;
+ udelay(10);
+ }
+
+ if (time_after(jiffies, timeout))
+ return -ETIME;
+
+ /* Restore the DFS mask to its original state */
+ reg = readl(pmsu_mp_base + PMSU_EVENT_STATUS_AND_MASK(hwcpu));
+ reg &= ~PMSU_EVENT_STATUS_AND_MASK_DFS_DONE_MASK;
+ writel(reg, pmsu_mp_base + PMSU_EVENT_STATUS_AND_MASK(hwcpu));
+
+ return 0;
+}
+
+static int __init armada_xp_pmsu_cpufreq_init(void)
+{
+ struct device_node *np;
+ struct resource res;
+ int ret, cpu;
+
+ if (!of_machine_is_compatible("marvell,armadaxp"))
+ return 0;
+
+ /*
+ * In order to have proper cpufreq handling, we need to ensure
+ * that the Device Tree description of the CPU clock includes
+ * the definition of the PMU DFS registers. If not, we do not
+ * register the clock notifier and the cpufreq driver. This
+ * piece of code is only for compatibility with old Device
+ * Trees.
+ */
+ np = of_find_compatible_node(NULL, NULL, "marvell,armada-xp-cpu-clock");
+ if (!np)
+ return 0;
+
+ ret = of_address_to_resource(np, 1, &res);
+ if (ret) {
+ pr_warn(FW_WARN "not enabling cpufreq, deprecated armada-xp-cpu-clock binding\n");
+ of_node_put(np);
+ return 0;
+ }
+
+ of_node_put(np);
+
+ /*
+ * For each CPU, this loop registers the operating points
+ * supported (which are the nominal CPU frequency and half of
+ * it), and registers the clock notifier that will take care
+ * of doing the PMSU part of a frequency transition.
+ */
+ for_each_possible_cpu(cpu) {
+ struct device *cpu_dev;
+ struct clk *clk;
+ int ret;
+
+ cpu_dev = get_cpu_device(cpu);
+ if (!cpu_dev) {
+ pr_err("Cannot get CPU %d\n", cpu);
+ continue;
+ }
+
+ clk = clk_get(cpu_dev, 0);
+ if (IS_ERR(clk)) {
+ pr_err("Cannot get clock for CPU %d\n", cpu);
+ return PTR_ERR(clk);
+ }
+
+ /*
+ * In case of a failure of dev_pm_opp_add(), we don't
+ * bother with cleaning up the registered OPP (there's
+ * no function to do so), and simply cancel the
+ * registration of the cpufreq device.
+ */
+ ret = dev_pm_opp_add(cpu_dev, clk_get_rate(clk), 0);
+ if (ret) {
+ clk_put(clk);
+ return ret;
+ }
+
+ ret = dev_pm_opp_add(cpu_dev, clk_get_rate(clk) / 2, 0);
+ if (ret) {
+ clk_put(clk);
+ return ret;
+ }
+ }
+ platform_device_register_simple("cpufreq-generic", -1, NULL, 0);
return 0;
}
-arch_initcall(armada_370_xp_cpu_pm_init);
-early_initcall(armada_370_xp_pmsu_init);
+device_initcall(armada_xp_pmsu_cpufreq_init);
diff --git a/arch/arm/mach-mvebu/pmsu.h b/arch/arm/mach-mvebu/pmsu.h
index 07a737c..6b58c1f 100644
--- a/arch/arm/mach-mvebu/pmsu.h
+++ b/arch/arm/mach-mvebu/pmsu.h
@@ -12,5 +12,10 @@
#define __MACH_MVEBU_PMSU_H
int armada_xp_boot_cpu(unsigned int cpu_id, void *phys_addr);
+int mvebu_setup_boot_addr_wa(unsigned int crypto_eng_target,
+ unsigned int crypto_eng_attribute,
+ phys_addr_t resume_addr_reg);
+
+void mvebu_v7_pmsu_idle_exit(void);
#endif /* __MACH_370_XP_PMSU_H */
diff --git a/arch/arm/mach-mvebu/pmsu_ll.S b/arch/arm/mach-mvebu/pmsu_ll.S
index fc3de68..a945756 100644
--- a/arch/arm/mach-mvebu/pmsu_ll.S
+++ b/arch/arm/mach-mvebu/pmsu_ll.S
@@ -23,3 +23,39 @@ ARM_BE8(setend be ) @ go BE8 if entered LE
b cpu_resume
ENDPROC(armada_370_xp_cpu_resume)
+ENTRY(armada_38x_cpu_resume)
+ /* do we need it for Armada 38x*/
+ARM_BE8(setend be ) @ go BE8 if entered LE
+ bl v7_invalidate_l1
+ mrc p15, 4, r1, c15, c0 @ get SCU base address
+ orr r1, r1, #0x8 @ SCU CPU Power Status Register
+ mrc 15, 0, r0, cr0, cr0, 5 @ get the CPU ID
+ and r0, r0, #15
+ add r1, r1, r0
+ mov r0, #0x0
+ strb r0, [r1] @ switch SCU power state to Normal mode
+ b cpu_resume
+ENDPROC(armada_38x_cpu_resume)
+
+.global mvebu_boot_wa_start
+.global mvebu_boot_wa_end
+
+/* The following code will be executed from SRAM */
+ENTRY(mvebu_boot_wa_start)
+mvebu_boot_wa_start:
+ARM_BE8(setend be)
+ adr r0, 1f
+ ldr r0, [r0] @ load the address of the
+ @ resume register
+ ldr r0, [r0] @ load the value in the
+ @ resume register
+ARM_BE8(rev r0, r0) @ the value is stored LE
+ mov pc, r0 @ jump to this value
+/*
+ * the last word of this piece of code will be filled by the physical
+ * address of the boot address register just after being copied in SRAM
+ */
+1:
+ .long .
+mvebu_boot_wa_end:
+ENDPROC(mvebu_boot_wa_end)
diff --git a/arch/arm/mach-mvebu/system-controller.c b/arch/arm/mach-mvebu/system-controller.c
index b2b4e3d..a068cb5 100644
--- a/arch/arm/mach-mvebu/system-controller.c
+++ b/arch/arm/mach-mvebu/system-controller.c
@@ -28,8 +28,14 @@
#include <linux/io.h>
#include <linux/reboot.h>
#include "common.h"
+#include "mvebu-soc-id.h"
+#include "pmsu.h"
+
+#define ARMADA_375_CRYPT0_ENG_TARGET 41
+#define ARMADA_375_CRYPT0_ENG_ATTR 1
static void __iomem *system_controller_base;
+static phys_addr_t system_controller_phys_base;
struct mvebu_system_controller {
u32 rstoutn_mask_offset;
@@ -121,10 +127,32 @@ int mvebu_system_controller_get_soc_id(u32 *dev, u32 *rev)
}
#ifdef CONFIG_SMP
+void mvebu_armada375_smp_wa_init(void)
+{
+ u32 dev, rev;
+ phys_addr_t resume_addr_reg;
+
+ if (mvebu_get_soc_id(&dev, &rev) != 0)
+ return;
+
+ if (rev != ARMADA_375_Z1_REV)
+ return;
+
+ resume_addr_reg = system_controller_phys_base +
+ mvebu_sc->resume_boot_addr;
+ mvebu_setup_boot_addr_wa(ARMADA_375_CRYPT0_ENG_TARGET,
+ ARMADA_375_CRYPT0_ENG_ATTR,
+ resume_addr_reg);
+}
+
void mvebu_system_controller_set_cpu_boot_addr(void *boot_addr)
{
BUG_ON(system_controller_base == NULL);
BUG_ON(mvebu_sc->resume_boot_addr == 0);
+
+ if (of_machine_is_compatible("marvell,armada375"))
+ mvebu_armada375_smp_wa_init();
+
writel(virt_to_phys(boot_addr), system_controller_base +
mvebu_sc->resume_boot_addr);
}
@@ -138,7 +166,10 @@ static int __init mvebu_system_controller_init(void)
np = of_find_matching_node_and_match(NULL, of_system_controller_table,
&match);
if (np) {
+ struct resource res;
system_controller_base = of_iomap(np, 0);
+ of_address_to_resource(np, 0, &res);
+ system_controller_phys_base = res.start;
mvebu_sc = (struct mvebu_system_controller *)match->data;
of_node_put(np);
}
diff --git a/drivers/clk/mvebu/clk-cpu.c b/drivers/clk/mvebu/clk-cpu.c
index 8ebf757..3821a88 100644
--- a/drivers/clk/mvebu/clk-cpu.c
+++ b/drivers/clk/mvebu/clk-cpu.c
@@ -16,10 +16,19 @@
#include <linux/io.h>
#include <linux/of.h>
#include <linux/delay.h>
+#include <linux/mvebu-pmsu.h>
+#include <asm/smp_plat.h>
-#define SYS_CTRL_CLK_DIVIDER_CTRL_OFFSET 0x0
-#define SYS_CTRL_CLK_DIVIDER_VALUE_OFFSET 0xC
-#define SYS_CTRL_CLK_DIVIDER_MASK 0x3F
+#define SYS_CTRL_CLK_DIVIDER_CTRL_OFFSET 0x0
+#define SYS_CTRL_CLK_DIVIDER_CTRL_RESET_ALL 0xff
+#define SYS_CTRL_CLK_DIVIDER_CTRL_RESET_SHIFT 8
+#define SYS_CTRL_CLK_DIVIDER_CTRL2_OFFSET 0x8
+#define SYS_CTRL_CLK_DIVIDER_CTRL2_NBCLK_RATIO_SHIFT 16
+#define SYS_CTRL_CLK_DIVIDER_VALUE_OFFSET 0xC
+#define SYS_CTRL_CLK_DIVIDER_MASK 0x3F
+
+#define PMU_DFS_RATIO_SHIFT 16
+#define PMU_DFS_RATIO_MASK 0x3F
#define MAX_CPU 4
struct cpu_clk {
@@ -28,6 +37,7 @@ struct cpu_clk {
const char *clk_name;
const char *parent_name;
void __iomem *reg_base;
+ void __iomem *pmu_dfs;
};
static struct clk **clks;
@@ -62,8 +72,9 @@ static long clk_cpu_round_rate(struct clk_hw *hwclk, unsigned long rate,
return *parent_rate / div;
}
-static int clk_cpu_set_rate(struct clk_hw *hwclk, unsigned long rate,
- unsigned long parent_rate)
+static int clk_cpu_off_set_rate(struct clk_hw *hwclk, unsigned long rate,
+ unsigned long parent_rate)
+
{
struct cpu_clk *cpuclk = to_cpu_clk(hwclk);
u32 reg, div;
@@ -95,6 +106,58 @@ static int clk_cpu_set_rate(struct clk_hw *hwclk, unsigned long rate,
return 0;
}
+static int clk_cpu_on_set_rate(struct clk_hw *hwclk, unsigned long rate,
+ unsigned long parent_rate)
+{
+ u32 reg;
+ unsigned long fabric_div, target_div, cur_rate;
+ struct cpu_clk *cpuclk = to_cpu_clk(hwclk);
+
+ /*
+ * PMU DFS registers are not mapped, Device Tree does not
+ * describes them. We cannot change the frequency dynamically.
+ */
+ if (!cpuclk->pmu_dfs)
+ return -ENODEV;
+
+ cur_rate = __clk_get_rate(hwclk->clk);
+
+ reg = readl(cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_CTRL2_OFFSET);
+ fabric_div = (reg >> SYS_CTRL_CLK_DIVIDER_CTRL2_NBCLK_RATIO_SHIFT) &
+ SYS_CTRL_CLK_DIVIDER_MASK;
+
+ /* Frequency is going up */
+ if (rate == 2 * cur_rate)
+ target_div = fabric_div / 2;
+ /* Frequency is going down */
+ else
+ target_div = fabric_div;
+
+ if (target_div == 0)
+ target_div = 1;
+
+ reg = readl(cpuclk->pmu_dfs);
+ reg &= ~(PMU_DFS_RATIO_MASK << PMU_DFS_RATIO_SHIFT);
+ reg |= (target_div << PMU_DFS_RATIO_SHIFT);
+ writel(reg, cpuclk->pmu_dfs);
+
+ reg = readl(cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_CTRL_OFFSET);
+ reg |= (SYS_CTRL_CLK_DIVIDER_CTRL_RESET_ALL <<
+ SYS_CTRL_CLK_DIVIDER_CTRL_RESET_SHIFT);
+ writel(reg, cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_CTRL_OFFSET);
+
+ return mvebu_pmsu_dfs_request(cpuclk->cpu);
+}
+
+static int clk_cpu_set_rate(struct clk_hw *hwclk, unsigned long rate,
+ unsigned long parent_rate)
+{
+ if (__clk_is_enabled(hwclk->clk))
+ return clk_cpu_on_set_rate(hwclk, rate, parent_rate);
+ else
+ return clk_cpu_off_set_rate(hwclk, rate, parent_rate);
+}
+
static const struct clk_ops cpu_ops = {
.recalc_rate = clk_cpu_recalc_rate,
.round_rate = clk_cpu_round_rate,
@@ -105,6 +168,7 @@ static void __init of_cpu_clk_setup(struct device_node *node)
{
struct cpu_clk *cpuclk;
void __iomem *clock_complex_base = of_iomap(node, 0);
+ void __iomem *pmu_dfs_base = of_iomap(node, 1);
int ncpus = 0;
struct device_node *dn;
@@ -114,6 +178,10 @@ static void __init of_cpu_clk_setup(struct device_node *node)
return;
}
+ if (pmu_dfs_base == NULL)
+ pr_warn("%s: pmu-dfs base register not set, dynamic frequency scaling not available\n",
+ __func__);
+
for_each_node_by_type(dn, "cpu")
ncpus++;
@@ -146,6 +214,8 @@ static void __init of_cpu_clk_setup(struct device_node *node)
cpuclk[cpu].clk_name = clk_name;
cpuclk[cpu].cpu = cpu;
cpuclk[cpu].reg_base = clock_complex_base;
+ if (pmu_dfs_base)
+ cpuclk[cpu].pmu_dfs = pmu_dfs_base + 4 * cpu;
cpuclk[cpu].hw.init = &init;
init.name = cpuclk[cpu].clk_name;
diff --git a/drivers/cpuidle/Kconfig.arm b/drivers/cpuidle/Kconfig.arm
index 2f6b33e..33fc0ff 100644
--- a/drivers/cpuidle/Kconfig.arm
+++ b/drivers/cpuidle/Kconfig.arm
@@ -1,12 +1,6 @@
#
# ARM CPU Idle drivers
#
-config ARM_ARMADA_370_XP_CPUIDLE
- bool "CPU Idle Driver for Armada 370/XP family processors"
- depends on ARCH_MVEBU
- help
- Select this to enable cpuidle on Armada 370/XP processors.
-
config ARM_BIG_LITTLE_CPUIDLE
bool "Support for ARM big.LITTLE processors"
depends on ARCH_VEXPRESS_TC2_PM || ARCH_EXYNOS
@@ -61,3 +55,9 @@ config ARM_EXYNOS_CPUIDLE
depends on ARCH_EXYNOS
help
Select this to enable cpuidle for Exynos processors
+
+config ARM_MVEBU_V7_CPUIDLE
+ bool "CPU Idle Driver for mvebu v7 family processors"
+ depends on ARCH_MVEBU
+ help
+ Select this to enable cpuidle on Armada 370, 38x and XP processors.
diff --git a/drivers/cpuidle/Makefile b/drivers/cpuidle/Makefile
index d8bb1ff..11edb31 100644
--- a/drivers/cpuidle/Makefile
+++ b/drivers/cpuidle/Makefile
@@ -7,7 +7,7 @@ obj-$(CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED) += coupled.o
##################################################################################
# ARM SoC drivers
-obj-$(CONFIG_ARM_ARMADA_370_XP_CPUIDLE) += cpuidle-armada-370-xp.o
+obj-$(CONFIG_ARM_MVEBU_V7_CPUIDLE) += cpuidle-mvebu-v7.o
obj-$(CONFIG_ARM_BIG_LITTLE_CPUIDLE) += cpuidle-big_little.o
obj-$(CONFIG_ARM_CLPS711X_CPUIDLE) += cpuidle-clps711x.o
obj-$(CONFIG_ARM_HIGHBANK_CPUIDLE) += cpuidle-calxeda.o
diff --git a/drivers/cpuidle/cpuidle-armada-370-xp.c b/drivers/cpuidle/cpuidle-armada-370-xp.c
deleted file mode 100644
index a5fba02..0000000
--- a/drivers/cpuidle/cpuidle-armada-370-xp.c
+++ /dev/null
@@ -1,93 +0,0 @@
-/*
- * Marvell Armada 370 and Armada XP SoC cpuidle driver
- *
- * Copyright (C) 2014 Marvell
- *
- * Nadav Haklai <nadavh@marvell.com>
- * Gregory CLEMENT <gregory.clement@free-electrons.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- *
- * Maintainer: Gregory CLEMENT <gregory.clement@free-electrons.com>
- */
-
-#include <linux/cpu_pm.h>
-#include <linux/cpuidle.h>
-#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/suspend.h>
-#include <linux/platform_device.h>
-#include <asm/cpuidle.h>
-
-#define ARMADA_370_XP_MAX_STATES 3
-#define ARMADA_370_XP_FLAG_DEEP_IDLE 0x10000
-
-static int (*armada_370_xp_cpu_suspend)(int);
-
-static int armada_370_xp_enter_idle(struct cpuidle_device *dev,
- struct cpuidle_driver *drv,
- int index)
-{
- int ret;
- bool deepidle = false;
- cpu_pm_enter();
-
- if (drv->states[index].flags & ARMADA_370_XP_FLAG_DEEP_IDLE)
- deepidle = true;
-
- ret = armada_370_xp_cpu_suspend(deepidle);
- if (ret)
- return ret;
-
- cpu_pm_exit();
-
- return index;
-}
-
-static struct cpuidle_driver armada_370_xp_idle_driver = {
- .name = "armada_370_xp_idle",
- .states[0] = ARM_CPUIDLE_WFI_STATE,
- .states[1] = {
- .enter = armada_370_xp_enter_idle,
- .exit_latency = 10,
- .power_usage = 50,
- .target_residency = 100,
- .flags = CPUIDLE_FLAG_TIME_VALID,
- .name = "Idle",
- .desc = "CPU power down",
- },
- .states[2] = {
- .enter = armada_370_xp_enter_idle,
- .exit_latency = 100,
- .power_usage = 5,
- .target_residency = 1000,
- .flags = CPUIDLE_FLAG_TIME_VALID |
- ARMADA_370_XP_FLAG_DEEP_IDLE,
- .name = "Deep idle",
- .desc = "CPU and L2 Fabric power down",
- },
- .state_count = ARMADA_370_XP_MAX_STATES,
-};
-
-static int armada_370_xp_cpuidle_probe(struct platform_device *pdev)
-{
-
- armada_370_xp_cpu_suspend = (void *)(pdev->dev.platform_data);
- return cpuidle_register(&armada_370_xp_idle_driver, NULL);
-}
-
-static struct platform_driver armada_370_xp_cpuidle_plat_driver = {
- .driver = {
- .name = "cpuidle-armada-370-xp",
- .owner = THIS_MODULE,
- },
- .probe = armada_370_xp_cpuidle_probe,
-};
-
-module_platform_driver(armada_370_xp_cpuidle_plat_driver);
-
-MODULE_AUTHOR("Gregory CLEMENT <gregory.clement@free-electrons.com>");
-MODULE_DESCRIPTION("Armada 370/XP cpu idle driver");
-MODULE_LICENSE("GPL");
diff --git a/drivers/cpuidle/cpuidle-mvebu-v7.c b/drivers/cpuidle/cpuidle-mvebu-v7.c
new file mode 100644
index 0000000..45371bb
--- /dev/null
+++ b/drivers/cpuidle/cpuidle-mvebu-v7.c
@@ -0,0 +1,150 @@
+/*
+ * Marvell Armada 370, 38x and XP SoC cpuidle driver
+ *
+ * Copyright (C) 2014 Marvell
+ *
+ * Nadav Haklai <nadavh@marvell.com>
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ *
+ * Maintainer: Gregory CLEMENT <gregory.clement@free-electrons.com>
+ */
+
+#include <linux/cpu_pm.h>
+#include <linux/cpuidle.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/suspend.h>
+#include <linux/platform_device.h>
+#include <asm/cpuidle.h>
+
+#define MVEBU_V7_FLAG_DEEP_IDLE 0x10000
+
+static int (*mvebu_v7_cpu_suspend)(int);
+
+static int mvebu_v7_enter_idle(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv,
+ int index)
+{
+ int ret;
+ bool deepidle = false;
+ cpu_pm_enter();
+
+ if (drv->states[index].flags & MVEBU_V7_FLAG_DEEP_IDLE)
+ deepidle = true;
+
+ ret = mvebu_v7_cpu_suspend(deepidle);
+ if (ret)
+ return ret;
+
+ cpu_pm_exit();
+
+ return index;
+}
+
+static struct cpuidle_driver armadaxp_idle_driver = {
+ .name = "armada_xp_idle",
+ .states[0] = ARM_CPUIDLE_WFI_STATE,
+ .states[1] = {
+ .enter = mvebu_v7_enter_idle,
+ .exit_latency = 10,
+ .power_usage = 50,
+ .target_residency = 100,
+ .flags = CPUIDLE_FLAG_TIME_VALID,
+ .name = "MV CPU IDLE",
+ .desc = "CPU power down",
+ },
+ .states[2] = {
+ .enter = mvebu_v7_enter_idle,
+ .exit_latency = 100,
+ .power_usage = 5,
+ .target_residency = 1000,
+ .flags = CPUIDLE_FLAG_TIME_VALID |
+ MVEBU_V7_FLAG_DEEP_IDLE,
+ .name = "MV CPU DEEP IDLE",
+ .desc = "CPU and L2 Fabric power down",
+ },
+ .state_count = 3,
+};
+
+static struct cpuidle_driver armada370_idle_driver = {
+ .name = "armada_370_idle",
+ .states[0] = ARM_CPUIDLE_WFI_STATE,
+ .states[1] = {
+ .enter = mvebu_v7_enter_idle,
+ .exit_latency = 100,
+ .power_usage = 5,
+ .target_residency = 1000,
+ .flags = (CPUIDLE_FLAG_TIME_VALID |
+ MVEBU_V7_FLAG_DEEP_IDLE),
+ .name = "Deep Idle",
+ .desc = "CPU and L2 Fabric power down",
+ },
+ .state_count = 2,
+};
+
+static struct cpuidle_driver armada38x_idle_driver = {
+ .name = "armada_38x_idle",
+ .states[0] = ARM_CPUIDLE_WFI_STATE,
+ .states[1] = {
+ .enter = mvebu_v7_enter_idle,
+ .exit_latency = 10,
+ .power_usage = 5,
+ .target_residency = 100,
+ .flags = CPUIDLE_FLAG_TIME_VALID,
+ .name = "Idle",
+ .desc = "CPU and SCU power down",
+ },
+ .state_count = 2,
+};
+
+static int mvebu_v7_cpuidle_probe(struct platform_device *pdev)
+{
+ mvebu_v7_cpu_suspend = pdev->dev.platform_data;
+
+ if (!strcmp(pdev->dev.driver->name, "cpuidle-armada-xp"))
+ return cpuidle_register(&armadaxp_idle_driver, NULL);
+ else if (!strcmp(pdev->dev.driver->name, "cpuidle-armada-370"))
+ return cpuidle_register(&armada370_idle_driver, NULL);
+ else if (!strcmp(pdev->dev.driver->name, "cpuidle-armada-38x"))
+ return cpuidle_register(&armada38x_idle_driver, NULL);
+ else
+ return -EINVAL;
+}
+
+static struct platform_driver armadaxp_cpuidle_plat_driver = {
+ .driver = {
+ .name = "cpuidle-armada-xp",
+ .owner = THIS_MODULE,
+ },
+ .probe = mvebu_v7_cpuidle_probe,
+};
+
+module_platform_driver(armadaxp_cpuidle_plat_driver);
+
+static struct platform_driver armada370_cpuidle_plat_driver = {
+ .driver = {
+ .name = "cpuidle-armada-370",
+ .owner = THIS_MODULE,
+ },
+ .probe = mvebu_v7_cpuidle_probe,
+};
+
+module_platform_driver(armada370_cpuidle_plat_driver);
+
+static struct platform_driver armada38x_cpuidle_plat_driver = {
+ .driver = {
+ .name = "cpuidle-armada-38x",
+ .owner = THIS_MODULE,
+ },
+ .probe = mvebu_v7_cpuidle_probe,
+};
+
+module_platform_driver(armada38x_cpuidle_plat_driver);
+
+MODULE_AUTHOR("Gregory CLEMENT <gregory.clement@free-electrons.com>");
+MODULE_DESCRIPTION("Marvell EBU v7 cpuidle driver");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/mvebu-pmsu.h b/include/linux/mvebu-pmsu.h
new file mode 100644
index 0000000..b918d07
--- /dev/null
+++ b/include/linux/mvebu-pmsu.h
@@ -0,0 +1,20 @@
+/*
+ * Copyright (C) 2012 Marvell
+ *
+ * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#ifndef __MVEBU_PMSU_H__
+#define __MVEBU_PMSU_H__
+
+#ifdef CONFIG_MACH_MVEBU_V7
+int mvebu_pmsu_dfs_request(int cpu);
+#else
+static inline int mvebu_pmsu_dfs_request(int cpu) { return -ENODEV; }
+#endif
+
+#endif /* __MVEBU_PMSU_H__ */
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