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-rw-r--r--arch/arm/mach-tegra/Kconfig2
-rw-r--r--arch/arm/mach-tegra/Makefile1
-rw-r--r--arch/arm/mach-tegra/common.c6
-rw-r--r--arch/arm/mach-tegra/common.h1
-rw-r--r--arch/arm/mach-tegra/cpuidle-tegra20.c10
-rw-r--r--arch/arm/mach-tegra/cpuidle-tegra30.c10
-rw-r--r--arch/arm/mach-tegra/cpuidle.c19
-rw-r--r--arch/arm/mach-tegra/cpuidle.h15
-rw-r--r--arch/arm/mach-tegra/flowctrl.h1
-rw-r--r--arch/arm/mach-tegra/fuse.h22
-rw-r--r--arch/arm/mach-tegra/hotplug.c13
-rw-r--r--arch/arm/mach-tegra/platsmp.c26
-rw-r--r--arch/arm/mach-tegra/pm.c25
-rw-r--r--arch/arm/mach-tegra/pm.h4
-rw-r--r--arch/arm/mach-tegra/pmc.c2
-rw-r--r--arch/arm/mach-tegra/reset-handler.S51
-rw-r--r--arch/arm/mach-tegra/sleep-tegra30.S30
-rw-r--r--arch/arm/mach-tegra/sleep.S8
-rw-r--r--arch/arm/mach-tegra/sleep.h35
-rw-r--r--arch/arm/mach-tegra/tegra2_emc.c7
20 files changed, 186 insertions, 102 deletions
diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig
index 84d72fc36dfe..65c5ae6fa386 100644
--- a/arch/arm/mach-tegra/Kconfig
+++ b/arch/arm/mach-tegra/Kconfig
@@ -60,7 +60,7 @@ config ARCH_TEGRA_3x_SOC
config ARCH_TEGRA_114_SOC
bool "Enable support for Tegra114 family"
- select ARM_ARCH_TIMER
+ select HAVE_ARM_ARCH_TIMER
select ARM_GIC
select ARM_L1_CACHE_SHIFT_6
select CPU_FREQ_TABLE if CPU_FREQ
diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile
index d011f0ad49c4..98b184efc110 100644
--- a/arch/arm/mach-tegra/Makefile
+++ b/arch/arm/mach-tegra/Makefile
@@ -30,6 +30,7 @@ obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
obj-$(CONFIG_TEGRA_PCI) += pcie.o
obj-$(CONFIG_ARCH_TEGRA_114_SOC) += tegra114_speedo.o
+obj-$(CONFIG_ARCH_TEGRA_114_SOC) += sleep-tegra30.o
ifeq ($(CONFIG_CPU_IDLE),y)
obj-$(CONFIG_ARCH_TEGRA_114_SOC) += cpuidle-tegra114.o
endif
diff --git a/arch/arm/mach-tegra/common.c b/arch/arm/mach-tegra/common.c
index 9f852c6fe5b9..b25153e2ebaa 100644
--- a/arch/arm/mach-tegra/common.c
+++ b/arch/arm/mach-tegra/common.c
@@ -23,12 +23,13 @@
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/irqchip.h>
-#include <linux/clk/tegra.h>
+#include <linux/clk-provider.h>
#include <asm/hardware/cache-l2x0.h>
#include "board.h"
#include "common.h"
+#include "cpuidle.h"
#include "fuse.h"
#include "iomap.h"
#include "irq.h"
@@ -59,7 +60,7 @@ u32 tegra_uart_config[4] = {
#ifdef CONFIG_OF
void __init tegra_dt_init_irq(void)
{
- tegra_clocks_init();
+ of_clk_init(NULL);
tegra_pmc_init();
tegra_init_irq();
irqchip_init();
@@ -108,5 +109,6 @@ void __init tegra_init_early(void)
void __init tegra_init_late(void)
{
tegra_init_suspend();
+ tegra_cpuidle_init();
tegra_powergate_debugfs_init();
}
diff --git a/arch/arm/mach-tegra/common.h b/arch/arm/mach-tegra/common.h
index 5900cc44f780..32f8eb3fe344 100644
--- a/arch/arm/mach-tegra/common.h
+++ b/arch/arm/mach-tegra/common.h
@@ -2,3 +2,4 @@ extern struct smp_operations tegra_smp_ops;
extern int tegra_cpu_kill(unsigned int cpu);
extern void tegra_cpu_die(unsigned int cpu);
+extern int tegra_cpu_disable(unsigned int cpu);
diff --git a/arch/arm/mach-tegra/cpuidle-tegra20.c b/arch/arm/mach-tegra/cpuidle-tegra20.c
index 0cdba8de8c77..706aa4215c36 100644
--- a/arch/arm/mach-tegra/cpuidle-tegra20.c
+++ b/arch/arm/mach-tegra/cpuidle-tegra20.c
@@ -177,7 +177,6 @@ static int tegra20_idle_lp2_coupled(struct cpuidle_device *dev,
struct cpuidle_driver *drv,
int index)
{
- u32 cpu = is_smp() ? cpu_logical_map(dev->cpu) : dev->cpu;
bool entered_lp2 = false;
if (tegra_pending_sgi())
@@ -193,16 +192,16 @@ static int tegra20_idle_lp2_coupled(struct cpuidle_device *dev,
local_fiq_disable();
- tegra_set_cpu_in_lp2(cpu);
+ tegra_set_cpu_in_lp2();
cpu_pm_enter();
- if (cpu == 0)
+ if (dev->cpu == 0)
entered_lp2 = tegra20_cpu_cluster_power_down(dev, drv, index);
else
entered_lp2 = tegra20_idle_enter_lp2_cpu_1(dev, drv, index);
cpu_pm_exit();
- tegra_clear_cpu_in_lp2(cpu);
+ tegra_clear_cpu_in_lp2();
local_fiq_enable();
@@ -214,8 +213,5 @@ static int tegra20_idle_lp2_coupled(struct cpuidle_device *dev,
int __init tegra20_cpuidle_init(void)
{
-#ifdef CONFIG_PM_SLEEP
- tegra_tear_down_cpu = tegra20_tear_down_cpu;
-#endif
return cpuidle_register(&tegra_idle_driver, cpu_possible_mask);
}
diff --git a/arch/arm/mach-tegra/cpuidle-tegra30.c b/arch/arm/mach-tegra/cpuidle-tegra30.c
index 3cf9aca5f3ea..ed2a2a7bae4d 100644
--- a/arch/arm/mach-tegra/cpuidle-tegra30.c
+++ b/arch/arm/mach-tegra/cpuidle-tegra30.c
@@ -114,16 +114,15 @@ static int tegra30_idle_lp2(struct cpuidle_device *dev,
struct cpuidle_driver *drv,
int index)
{
- u32 cpu = is_smp() ? cpu_logical_map(dev->cpu) : dev->cpu;
bool entered_lp2 = false;
bool last_cpu;
local_fiq_disable();
- last_cpu = tegra_set_cpu_in_lp2(cpu);
+ last_cpu = tegra_set_cpu_in_lp2();
cpu_pm_enter();
- if (cpu == 0) {
+ if (dev->cpu == 0) {
if (last_cpu)
entered_lp2 = tegra30_cpu_cluster_power_down(dev, drv,
index);
@@ -134,7 +133,7 @@ static int tegra30_idle_lp2(struct cpuidle_device *dev,
}
cpu_pm_exit();
- tegra_clear_cpu_in_lp2(cpu);
+ tegra_clear_cpu_in_lp2();
local_fiq_enable();
@@ -146,8 +145,5 @@ static int tegra30_idle_lp2(struct cpuidle_device *dev,
int __init tegra30_cpuidle_init(void)
{
-#ifdef CONFIG_PM_SLEEP
- tegra_tear_down_cpu = tegra30_tear_down_cpu;
-#endif
return cpuidle_register(&tegra_idle_driver, NULL);
}
diff --git a/arch/arm/mach-tegra/cpuidle.c b/arch/arm/mach-tegra/cpuidle.c
index 4b744c4661e2..e85973cef037 100644
--- a/arch/arm/mach-tegra/cpuidle.c
+++ b/arch/arm/mach-tegra/cpuidle.c
@@ -27,25 +27,20 @@
#include "fuse.h"
#include "cpuidle.h"
-static int __init tegra_cpuidle_init(void)
+void __init tegra_cpuidle_init(void)
{
- int ret;
-
switch (tegra_chip_id) {
case TEGRA20:
- ret = tegra20_cpuidle_init();
+ if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC))
+ tegra20_cpuidle_init();
break;
case TEGRA30:
- ret = tegra30_cpuidle_init();
+ if (IS_ENABLED(CONFIG_ARCH_TEGRA_3x_SOC))
+ tegra30_cpuidle_init();
break;
case TEGRA114:
- ret = tegra114_cpuidle_init();
- break;
- default:
- ret = -ENODEV;
+ if (IS_ENABLED(CONFIG_ARCH_TEGRA_114_SOC))
+ tegra114_cpuidle_init();
break;
}
-
- return ret;
}
-device_initcall(tegra_cpuidle_init);
diff --git a/arch/arm/mach-tegra/cpuidle.h b/arch/arm/mach-tegra/cpuidle.h
index d733f75d0208..9ec2c1ab0fa4 100644
--- a/arch/arm/mach-tegra/cpuidle.h
+++ b/arch/arm/mach-tegra/cpuidle.h
@@ -17,22 +17,13 @@
#ifndef __MACH_TEGRA_CPUIDLE_H
#define __MACH_TEGRA_CPUIDLE_H
-#ifdef CONFIG_ARCH_TEGRA_2x_SOC
+#ifdef CONFIG_CPU_IDLE
int tegra20_cpuidle_init(void);
-#else
-static inline int tegra20_cpuidle_init(void) { return -ENODEV; }
-#endif
-
-#ifdef CONFIG_ARCH_TEGRA_3x_SOC
int tegra30_cpuidle_init(void);
-#else
-static inline int tegra30_cpuidle_init(void) { return -ENODEV; }
-#endif
-
-#ifdef CONFIG_ARCH_TEGRA_114_SOC
int tegra114_cpuidle_init(void);
+void tegra_cpuidle_init(void);
#else
-static inline int tegra114_cpuidle_init(void) { return -ENODEV; }
+static inline void tegra_cpuidle_init(void) {}
#endif
#endif
diff --git a/arch/arm/mach-tegra/flowctrl.h b/arch/arm/mach-tegra/flowctrl.h
index 67eab56699bd..7a29bae799a7 100644
--- a/arch/arm/mach-tegra/flowctrl.h
+++ b/arch/arm/mach-tegra/flowctrl.h
@@ -25,6 +25,7 @@
#define FLOW_CTRL_WAITEVENT (2 << 29)
#define FLOW_CTRL_WAIT_FOR_INTERRUPT (4 << 29)
#define FLOW_CTRL_JTAG_RESUME (1 << 28)
+#define FLOW_CTRL_SCLK_RESUME (1 << 27)
#define FLOW_CTRL_HALT_CPU_IRQ (1 << 10)
#define FLOW_CTRL_HALT_CPU_FIQ (1 << 8)
#define FLOW_CTRL_CPU0_CSR 0x8
diff --git a/arch/arm/mach-tegra/fuse.h b/arch/arm/mach-tegra/fuse.h
index aacc00d05980..def79683bef6 100644
--- a/arch/arm/mach-tegra/fuse.h
+++ b/arch/arm/mach-tegra/fuse.h
@@ -19,16 +19,6 @@
#ifndef __MACH_TEGRA_FUSE_H
#define __MACH_TEGRA_FUSE_H
-enum tegra_revision {
- TEGRA_REVISION_UNKNOWN = 0,
- TEGRA_REVISION_A01,
- TEGRA_REVISION_A02,
- TEGRA_REVISION_A03,
- TEGRA_REVISION_A03p,
- TEGRA_REVISION_A04,
- TEGRA_REVISION_MAX,
-};
-
#define SKU_ID_T20 8
#define SKU_ID_T25SE 20
#define SKU_ID_AP25 23
@@ -40,6 +30,17 @@ enum tegra_revision {
#define TEGRA30 0x30
#define TEGRA114 0x35
+#ifndef __ASSEMBLY__
+enum tegra_revision {
+ TEGRA_REVISION_UNKNOWN = 0,
+ TEGRA_REVISION_A01,
+ TEGRA_REVISION_A02,
+ TEGRA_REVISION_A03,
+ TEGRA_REVISION_A03p,
+ TEGRA_REVISION_A04,
+ TEGRA_REVISION_MAX,
+};
+
extern int tegra_sku_id;
extern int tegra_cpu_process_id;
extern int tegra_core_process_id;
@@ -72,5 +73,6 @@ void tegra114_init_speedo_data(void);
#else
static inline void tegra114_init_speedo_data(void) {}
#endif
+#endif /* __ASSEMBLY__ */
#endif
diff --git a/arch/arm/mach-tegra/hotplug.c b/arch/arm/mach-tegra/hotplug.c
index 184914a68d73..a52c10e0a857 100644
--- a/arch/arm/mach-tegra/hotplug.c
+++ b/arch/arm/mach-tegra/hotplug.c
@@ -46,6 +46,17 @@ void __ref tegra_cpu_die(unsigned int cpu)
BUG();
}
+int tegra_cpu_disable(unsigned int cpu)
+{
+ switch (tegra_chip_id) {
+ case TEGRA20:
+ case TEGRA30:
+ return cpu == 0 ? -EPERM : 0;
+ default:
+ return 0;
+ }
+}
+
void __init tegra_hotplug_init(void)
{
if (!IS_ENABLED(CONFIG_HOTPLUG_CPU))
@@ -55,4 +66,6 @@ void __init tegra_hotplug_init(void)
tegra_hotplug_shutdown = tegra20_hotplug_shutdown;
if (IS_ENABLED(CONFIG_ARCH_TEGRA_3x_SOC) && tegra_chip_id == TEGRA30)
tegra_hotplug_shutdown = tegra30_hotplug_shutdown;
+ if (IS_ENABLED(CONFIG_ARCH_TEGRA_114_SOC) && tegra_chip_id == TEGRA114)
+ tegra_hotplug_shutdown = tegra30_hotplug_shutdown;
}
diff --git a/arch/arm/mach-tegra/platsmp.c b/arch/arm/mach-tegra/platsmp.c
index fad4226ef710..24db4ac428ae 100644
--- a/arch/arm/mach-tegra/platsmp.c
+++ b/arch/arm/mach-tegra/platsmp.c
@@ -140,8 +140,31 @@ remove_clamps:
static int tegra114_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
+ int ret = 0;
+
cpu = cpu_logical_map(cpu);
- return tegra_pmc_cpu_power_on(cpu);
+
+ if (cpumask_test_cpu(cpu, &tegra_cpu_init_mask)) {
+ /*
+ * Warm boot flow
+ * The flow controller in charge of the power state and
+ * control for each CPU.
+ */
+ /* set SCLK as event trigger for flow controller */
+ flowctrl_write_cpu_csr(cpu, 1);
+ flowctrl_write_cpu_halt(cpu,
+ FLOW_CTRL_WAITEVENT | FLOW_CTRL_SCLK_RESUME);
+ } else {
+ /*
+ * Cold boot flow
+ * The CPU is powered up by toggling PMC directly. It will
+ * also initial power state in flow controller. After that,
+ * the CPU's power state is maintained by flow controller.
+ */
+ ret = tegra_pmc_cpu_power_on(cpu);
+ }
+
+ return ret;
}
static int __cpuinit tegra_boot_secondary(unsigned int cpu,
@@ -173,5 +196,6 @@ struct smp_operations tegra_smp_ops __initdata = {
#ifdef CONFIG_HOTPLUG_CPU
.cpu_kill = tegra_cpu_kill,
.cpu_die = tegra_cpu_die,
+ .cpu_disable = tegra_cpu_disable,
#endif
};
diff --git a/arch/arm/mach-tegra/pm.c b/arch/arm/mach-tegra/pm.c
index 45cf52c7e528..94e69bee3da5 100644
--- a/arch/arm/mach-tegra/pm.c
+++ b/arch/arm/mach-tegra/pm.c
@@ -44,6 +44,20 @@
static DEFINE_SPINLOCK(tegra_lp2_lock);
void (*tegra_tear_down_cpu)(void);
+static void tegra_tear_down_cpu_init(void)
+{
+ switch (tegra_chip_id) {
+ case TEGRA20:
+ if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC))
+ tegra_tear_down_cpu = tegra20_tear_down_cpu;
+ break;
+ case TEGRA30:
+ if (IS_ENABLED(CONFIG_ARCH_TEGRA_3x_SOC))
+ tegra_tear_down_cpu = tegra30_tear_down_cpu;
+ break;
+ }
+}
+
/*
* restore_cpu_complex
*
@@ -91,8 +105,9 @@ static void suspend_cpu_complex(void)
flowctrl_cpu_suspend_enter(cpu);
}
-void tegra_clear_cpu_in_lp2(int phy_cpu_id)
+void tegra_clear_cpu_in_lp2(void)
{
+ int phy_cpu_id = cpu_logical_map(smp_processor_id());
u32 *cpu_in_lp2 = tegra_cpu_lp2_mask;
spin_lock(&tegra_lp2_lock);
@@ -103,8 +118,9 @@ void tegra_clear_cpu_in_lp2(int phy_cpu_id)
spin_unlock(&tegra_lp2_lock);
}
-bool tegra_set_cpu_in_lp2(int phy_cpu_id)
+bool tegra_set_cpu_in_lp2(void)
{
+ int phy_cpu_id = cpu_logical_map(smp_processor_id());
bool last_cpu = false;
cpumask_t *cpu_lp2_mask = tegra_cpu_lp2_mask;
u32 *cpu_in_lp2 = tegra_cpu_lp2_mask;
@@ -192,7 +208,7 @@ static int __cpuinit tegra_suspend_enter(suspend_state_t state)
suspend_cpu_complex();
switch (mode) {
case TEGRA_SUSPEND_LP2:
- tegra_set_cpu_in_lp2(0);
+ tegra_set_cpu_in_lp2();
break;
default:
break;
@@ -202,7 +218,7 @@ static int __cpuinit tegra_suspend_enter(suspend_state_t state)
switch (mode) {
case TEGRA_SUSPEND_LP2:
- tegra_clear_cpu_in_lp2(0);
+ tegra_clear_cpu_in_lp2();
break;
default:
break;
@@ -224,6 +240,7 @@ void __init tegra_init_suspend(void)
if (tegra_pmc_get_suspend_mode() == TEGRA_SUSPEND_NONE)
return;
+ tegra_tear_down_cpu_init();
tegra_pmc_suspend_init();
suspend_set_ops(&tegra_suspend_ops);
diff --git a/arch/arm/mach-tegra/pm.h b/arch/arm/mach-tegra/pm.h
index 778a4aa7c3fa..94c4b9d9077c 100644
--- a/arch/arm/mach-tegra/pm.h
+++ b/arch/arm/mach-tegra/pm.h
@@ -28,8 +28,8 @@ extern unsigned long l2x0_saved_regs_addr;
void save_cpu_arch_register(void);
void restore_cpu_arch_register(void);
-void tegra_clear_cpu_in_lp2(int phy_cpu_id);
-bool tegra_set_cpu_in_lp2(int phy_cpu_id);
+void tegra_clear_cpu_in_lp2(void);
+bool tegra_set_cpu_in_lp2(void);
void tegra_idle_lp2_last(void);
extern void (*tegra_tear_down_cpu)(void);
diff --git a/arch/arm/mach-tegra/pmc.c b/arch/arm/mach-tegra/pmc.c
index 32360e540ce6..eb3fa4aee0e4 100644
--- a/arch/arm/mach-tegra/pmc.c
+++ b/arch/arm/mach-tegra/pmc.c
@@ -234,7 +234,7 @@ static const struct of_device_id matches[] __initconst = {
{ }
};
-static void tegra_pmc_parse_dt(void)
+static void __init tegra_pmc_parse_dt(void)
{
struct device_node *np;
u32 prop;
diff --git a/arch/arm/mach-tegra/reset-handler.S b/arch/arm/mach-tegra/reset-handler.S
index e6de88a2ea06..39dc9e7834f3 100644
--- a/arch/arm/mach-tegra/reset-handler.S
+++ b/arch/arm/mach-tegra/reset-handler.S
@@ -22,11 +22,11 @@
#include <asm/hardware/cache-l2x0.h>
#include "flowctrl.h"
+#include "fuse.h"
#include "iomap.h"
#include "reset.h"
#include "sleep.h"
-#define APB_MISC_GP_HIDREV 0x804
#define PMC_SCRATCH41 0x140
#define RESET_DATA(x) ((TEGRA_RESET_##x)*4)
@@ -38,34 +38,40 @@
* CPU boot vector when restarting the a CPU following
* an LP2 transition. Also branched to by LP0 and LP1 resume after
* re-enabling sdram.
+ *
+ * r6: SoC ID
*/
ENTRY(tegra_resume)
bl v7_invalidate_l1
cpu_id r0
+ tegra_get_soc_id TEGRA_APB_MISC_BASE, r6
+ cmp r6, #TEGRA114
+ beq no_cpu0_chk
+
cmp r0, #0 @ CPU0?
THUMB( it ne )
bne cpu_resume @ no
+no_cpu0_chk:
-#ifdef CONFIG_ARCH_TEGRA_3x_SOC
/* Are we on Tegra20? */
- mov32 r6, TEGRA_APB_MISC_BASE
- ldr r0, [r6, #APB_MISC_GP_HIDREV]
- and r0, r0, #0xff00
- cmp r0, #(0x20 << 8)
+ cmp r6, #TEGRA20
beq 1f @ Yes
/* Clear the flow controller flags for this CPU. */
- mov32 r2, TEGRA_FLOW_CTRL_BASE + FLOW_CTRL_CPU0_CSR @ CPU0 CSR
- ldr r1, [r2]
+ cpu_to_csr_reg r1, r0
+ mov32 r2, TEGRA_FLOW_CTRL_BASE
+ ldr r1, [r2, r1]
/* Clear event & intr flag */
orr r1, r1, \
#FLOW_CTRL_CSR_INTR_FLAG | FLOW_CTRL_CSR_EVENT_FLAG
- movw r0, #0x0FFD @ enable, cluster_switch, immed, & bitmaps
+ movw r0, #0x3FFD @ enable, cluster_switch, immed, bitmaps
+ @ & ext flags for CPU power mgnt
bic r1, r1, r0
str r1, [r2]
1:
-#endif
+ check_cpu_part_num 0xc09, r8, r9
+ bne not_ca9
#ifdef CONFIG_HAVE_ARM_SCU
/* enable SCU */
mov32 r0, TEGRA_ARM_PERIF_BASE
@@ -76,6 +82,7 @@ ENTRY(tegra_resume)
/* L2 cache resume & re-enable */
l2_cache_resume r0, r1, r2, l2x0_saved_regs_addr
+not_ca9:
b cpu_resume
ENDPROC(tegra_resume)
@@ -98,7 +105,7 @@ ENTRY(__tegra_cpu_reset_handler_start)
* Register usage within the reset handler:
*
* Others: scratch
- * R6 = SoC ID << 8
+ * R6 = SoC ID
* R7 = CPU present (to the OS) mask
* R8 = CPU in LP1 state mask
* R9 = CPU in LP2 state mask
@@ -115,12 +122,10 @@ ENTRY(__tegra_cpu_reset_handler)
cpsid aif, 0x13 @ SVC mode, interrupts disabled
- mov32 r6, TEGRA_APB_MISC_BASE
- ldr r6, [r6, #APB_MISC_GP_HIDREV]
- and r6, r6, #0xff00
+ tegra_get_soc_id TEGRA_APB_MISC_BASE, r6
#ifdef CONFIG_ARCH_TEGRA_2x_SOC
t20_check:
- cmp r6, #(0x20 << 8)
+ cmp r6, #TEGRA20
bne after_t20_check
t20_errata:
# Tegra20 is a Cortex-A9 r1p1
@@ -136,7 +141,7 @@ after_t20_check:
#endif
#ifdef CONFIG_ARCH_TEGRA_3x_SOC
t30_check:
- cmp r6, #(0x30 << 8)
+ cmp r6, #TEGRA30
bne after_t30_check
t30_errata:
# Tegra30 is a Cortex-A9 r2p9
@@ -163,7 +168,7 @@ after_errata:
#ifdef CONFIG_ARCH_TEGRA_2x_SOC
/* Are we on Tegra20? */
- cmp r6, #(0x20 << 8)
+ cmp r6, #TEGRA20
bne 1f
/* If not CPU0, don't let CPU0 reset CPU1 now that CPU1 is coming up. */
mov32 r5, TEGRA_PMC_BASE
@@ -186,11 +191,14 @@ __is_not_lp2:
#ifdef CONFIG_SMP
/*
- * Can only be secondary boot (initial or hotplug) but CPU 0
- * cannot be here.
+ * Can only be secondary boot (initial or hotplug)
+ * CPU0 can't be here for Tegra20/30
*/
+ cmp r6, #TEGRA114
+ beq __no_cpu0_chk
cmp r10, #0
bleq __die @ CPU0 cannot be here
+__no_cpu0_chk:
ldr lr, [r12, #RESET_DATA(STARTUP_SECONDARY)]
cmp lr, #0
bleq __die @ no secondary startup handler
@@ -210,10 +218,7 @@ __die:
mov32 r7, TEGRA_CLK_RESET_BASE
/* Are we on Tegra20? */
- mov32 r6, TEGRA_APB_MISC_BASE
- ldr r0, [r6, #APB_MISC_GP_HIDREV]
- and r0, r0, #0xff00
- cmp r0, #(0x20 << 8)
+ cmp r6, #TEGRA20
bne 1f
#ifdef CONFIG_ARCH_TEGRA_2x_SOC
diff --git a/arch/arm/mach-tegra/sleep-tegra30.S b/arch/arm/mach-tegra/sleep-tegra30.S
index d29dfcce948d..ada8821b48be 100644
--- a/arch/arm/mach-tegra/sleep-tegra30.S
+++ b/arch/arm/mach-tegra/sleep-tegra30.S
@@ -19,6 +19,7 @@
#include <asm/assembler.h>
#include <asm/asm-offsets.h>
+#include "fuse.h"
#include "sleep.h"
#include "flowctrl.h"
@@ -43,14 +44,19 @@ ENDPROC(tegra30_hotplug_shutdown)
*
* Puts the current CPU in wait-for-event mode on the flow controller
* and powergates it -- flags (in R0) indicate the request type.
- * Must never be called for CPU 0.
*
- * corrupts r0-r4, r12
+ * r10 = SoC ID
+ * corrupts r0-r4, r10-r12
*/
ENTRY(tegra30_cpu_shutdown)
cpu_id r3
+ tegra_get_soc_id TEGRA_APB_MISC_VIRT, r10
+ cmp r10, #TEGRA30
+ bne _no_cpu0_chk @ It's not Tegra30
+
cmp r3, #0
moveq pc, lr @ Must never be called for CPU 0
+_no_cpu0_chk:
ldr r12, =TEGRA_FLOW_CTRL_VIRT
cpu_to_csr_reg r1, r3
@@ -65,7 +71,9 @@ ENTRY(tegra30_cpu_shutdown)
movw r12, \
FLOW_CTRL_CSR_INTR_FLAG | FLOW_CTRL_CSR_EVENT_FLAG | \
FLOW_CTRL_CSR_ENABLE
- mov r4, #(1 << 4)
+ cmp r10, #TEGRA30
+ moveq r4, #(1 << 4) @ wfe bitmap
+ movne r4, #(1 << 8) @ wfi bitmap
ARM( orr r12, r12, r4, lsl r3 )
THUMB( lsl r4, r4, r3 )
THUMB( orr r12, r12, r4 )
@@ -79,9 +87,20 @@ delay_1:
cpsid a @ disable imprecise aborts.
ldr r3, [r1] @ read CSR
str r3, [r1] @ clear CSR
+
tst r0, #TEGRA30_POWER_HOTPLUG_SHUTDOWN
+ beq flow_ctrl_setting_for_lp2
+
+ /* flow controller set up for hotplug */
+ mov r3, #FLOW_CTRL_WAITEVENT @ For hotplug
+ b flow_ctrl_done
+flow_ctrl_setting_for_lp2:
+ /* flow controller set up for LP2 */
+ cmp r10, #TEGRA30
moveq r3, #FLOW_CTRL_WAIT_FOR_INTERRUPT @ For LP2
- movne r3, #FLOW_CTRL_WAITEVENT @ For hotplug
+ movne r3, #FLOW_CTRL_WAITEVENT
+flow_ctrl_done:
+ cmp r10, #TEGRA30
str r3, [r2]
ldr r0, [r2]
b wfe_war
@@ -89,7 +108,8 @@ delay_1:
__cpu_reset_again:
dsb
.align 5
- wfe @ CPU should be power gated here
+ wfeeq @ CPU should be power gated here
+ wfine
wfe_war:
b __cpu_reset_again
diff --git a/arch/arm/mach-tegra/sleep.S b/arch/arm/mach-tegra/sleep.S
index 364d84523fba..9daaef26b0f6 100644
--- a/arch/arm/mach-tegra/sleep.S
+++ b/arch/arm/mach-tegra/sleep.S
@@ -106,9 +106,11 @@ ENTRY(tegra_shut_off_mmu)
isb
#ifdef CONFIG_CACHE_L2X0
/* Disable L2 cache */
- mov32 r4, TEGRA_ARM_PERIF_BASE + 0x3000
- mov r5, #0
- str r5, [r4, #L2X0_CTRL]
+ check_cpu_part_num 0xc09, r9, r10
+ movweq r4, #:lower16:(TEGRA_ARM_PERIF_BASE + 0x3000)
+ movteq r4, #:upper16:(TEGRA_ARM_PERIF_BASE + 0x3000)
+ moveq r5, #0
+ streq r5, [r4, #L2X0_CTRL]
#endif
mov pc, r0
ENDPROC(tegra_shut_off_mmu)
diff --git a/arch/arm/mach-tegra/sleep.h b/arch/arm/mach-tegra/sleep.h
index 2080fb12ce26..98b7da698f2b 100644
--- a/arch/arm/mach-tegra/sleep.h
+++ b/arch/arm/mach-tegra/sleep.h
@@ -25,6 +25,8 @@
+ IO_PPSB_VIRT)
#define TEGRA_CLK_RESET_VIRT (TEGRA_CLK_RESET_BASE - IO_PPSB_PHYS \
+ IO_PPSB_VIRT)
+#define TEGRA_APB_MISC_VIRT (TEGRA_APB_MISC_BASE - IO_APB_PHYS \
+ + IO_APB_VIRT)
#define TEGRA_PMC_VIRT (TEGRA_PMC_BASE - IO_APB_PHYS + IO_APB_VIRT)
/* PMC_SCRATCH37-39 and 41 are used for tegra_pen_lock and idle */
@@ -70,19 +72,40 @@
movt \reg, #:upper16:\val
.endm
+/* Marco to check CPU part num */
+.macro check_cpu_part_num part_num, tmp1, tmp2
+ mrc p15, 0, \tmp1, c0, c0, 0
+ ubfx \tmp1, \tmp1, #4, #12
+ mov32 \tmp2, \part_num
+ cmp \tmp1, \tmp2
+.endm
+
/* Macro to exit SMP coherency. */
.macro exit_smp, tmp1, tmp2
mrc p15, 0, \tmp1, c1, c0, 1 @ ACTLR
bic \tmp1, \tmp1, #(1<<6) | (1<<0) @ clear ACTLR.SMP | ACTLR.FW
mcr p15, 0, \tmp1, c1, c0, 1 @ ACTLR
isb
- cpu_id \tmp1
- mov \tmp1, \tmp1, lsl #2
- mov \tmp2, #0xf
- mov \tmp2, \tmp2, lsl \tmp1
- mov32 \tmp1, TEGRA_ARM_PERIF_VIRT + 0xC
- str \tmp2, [\tmp1] @ invalidate SCU tags for CPU
+#ifdef CONFIG_HAVE_ARM_SCU
+ check_cpu_part_num 0xc09, \tmp1, \tmp2
+ mrceq p15, 0, \tmp1, c0, c0, 5
+ andeq \tmp1, \tmp1, #0xF
+ moveq \tmp1, \tmp1, lsl #2
+ moveq \tmp2, #0xf
+ moveq \tmp2, \tmp2, lsl \tmp1
+ ldreq \tmp1, =(TEGRA_ARM_PERIF_VIRT + 0xC)
+ streq \tmp2, [\tmp1] @ invalidate SCU tags for CPU
dsb
+#endif
+.endm
+
+/* Macro to check Tegra revision */
+#define APB_MISC_GP_HIDREV 0x804
+.macro tegra_get_soc_id base, tmp1
+ mov32 \tmp1, \base
+ ldr \tmp1, [\tmp1, #APB_MISC_GP_HIDREV]
+ and \tmp1, \tmp1, #0xff00
+ mov \tmp1, \tmp1, lsr #8
.endm
/* Macro to resume & re-enable L2 cache */
diff --git a/arch/arm/mach-tegra/tegra2_emc.c b/arch/arm/mach-tegra/tegra2_emc.c
index 9e8bdfa2b369..3ae4a7f1a2fb 100644
--- a/arch/arm/mach-tegra/tegra2_emc.c
+++ b/arch/arm/mach-tegra/tegra2_emc.c
@@ -183,7 +183,7 @@ static struct device_node *tegra_emc_ramcode_devnode(struct device_node *np)
u32 reg;
for_each_child_of_node(np, iter) {
- if (of_property_read_u32(np, "nvidia,ram-code", &reg))
+ if (of_property_read_u32(iter, "nvidia,ram-code", &reg))
continue;
if (reg == tegra_bct_strapping)
return of_node_get(iter);
@@ -307,11 +307,6 @@ static int tegra_emc_probe(struct platform_device *pdev)
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(&pdev->dev, "missing register base\n");
- return -ENOMEM;
- }
-
emc_regbase = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(emc_regbase))
return PTR_ERR(emc_regbase);
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-28 00:38:38 +0000