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authorLinus Torvalds <torvalds@linux-foundation.org>2013-11-14 13:41:48 +0900
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-14 13:41:48 +0900
commitf9300eaaac1ca300083ad41937923a90cc3a2394 (patch)
tree724b72ad729a8b85c09d2d54f8ca7d8ba22d774f /arch/arm/mach-vexpress
parent7f2dc5c4bcbff035b0d03f7aa78a182664b21e47 (diff)
parentfaddf2f5d278f1656e9444961bdd8d9db4deb5bf (diff)
Merge tag 'pm+acpi-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management updates from Rafael J Wysocki: - New power capping framework and the the Intel Running Average Power Limit (RAPL) driver using it from Srinivas Pandruvada and Jacob Pan. - Addition of the in-kernel switching feature to the arm_big_little cpufreq driver from Viresh Kumar and Nicolas Pitre. - cpufreq support for iMac G5 from Aaro Koskinen. - Baytrail processors support for intel_pstate from Dirk Brandewie. - cpufreq support for Midway/ECX-2000 from Mark Langsdorf. - ARM vexpress/TC2 cpufreq support from Sudeep KarkadaNagesha. - ACPI power management support for the I2C and SPI bus types from Mika Westerberg and Lv Zheng. - cpufreq core fixes and cleanups from Viresh Kumar, Srivatsa S Bhat, Stratos Karafotis, Xiaoguang Chen, Lan Tianyu. - cpufreq drivers updates (mostly fixes and cleanups) from Viresh Kumar, Aaro Koskinen, Jungseok Lee, Sudeep KarkadaNagesha, Lukasz Majewski, Manish Badarkhe, Hans-Christian Egtvedt, Evgeny Kapaev. - intel_pstate updates from Dirk Brandewie and Adrian Huang. - ACPICA update to version 20130927 includig fixes and cleanups and some reduction of divergences between the ACPICA code in the kernel and ACPICA upstream in order to improve the automatic ACPICA patch generation process. From Bob Moore, Lv Zheng, Tomasz Nowicki, Naresh Bhat, Bjorn Helgaas, David E Box. - ACPI IPMI driver fixes and cleanups from Lv Zheng. - ACPI hotplug fixes and cleanups from Bjorn Helgaas, Toshi Kani, Zhang Yanfei, Rafael J Wysocki. - Conversion of the ACPI AC driver to the platform bus type and multiple driver fixes and cleanups related to ACPI from Zhang Rui. - ACPI processor driver fixes and cleanups from Hanjun Guo, Jiang Liu, Bartlomiej Zolnierkiewicz, Mathieu Rhéaume, Rafael J Wysocki. - Fixes and cleanups and new blacklist entries related to the ACPI video support from Aaron Lu, Felipe Contreras, Lennart Poettering, Kirill Tkhai. - cpuidle core cleanups from Viresh Kumar and Lorenzo Pieralisi. - cpuidle drivers fixes and cleanups from Daniel Lezcano, Jingoo Han, Bartlomiej Zolnierkiewicz, Prarit Bhargava. - devfreq updates from Sachin Kamat, Dan Carpenter, Manish Badarkhe. - Operation Performance Points (OPP) core updates from Nishanth Menon. - Runtime power management core fix from Rafael J Wysocki and update from Ulf Hansson. - Hibernation fixes from Aaron Lu and Rafael J Wysocki. - Device suspend/resume lockup detection mechanism from Benoit Goby. - Removal of unused proc directories created for various ACPI drivers from Lan Tianyu. - ACPI LPSS driver fix and new device IDs for the ACPI platform scan handler from Heikki Krogerus and Jarkko Nikula. - New ACPI _OSI blacklist entry for Toshiba NB100 from Levente Kurusa. - Assorted fixes and cleanups related to ACPI from Andy Shevchenko, Al Stone, Bartlomiej Zolnierkiewicz, Colin Ian King, Dan Carpenter, Felipe Contreras, Jianguo Wu, Lan Tianyu, Yinghai Lu, Mathias Krause, Liu Chuansheng. - Assorted PM fixes and cleanups from Andy Shevchenko, Thierry Reding, Jean-Christophe Plagniol-Villard. * tag 'pm+acpi-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (386 commits) cpufreq: conservative: fix requested_freq reduction issue ACPI / hotplug: Consolidate deferred execution of ACPI hotplug routines PM / runtime: Use pm_runtime_put_sync() in __device_release_driver() ACPI / event: remove unneeded NULL pointer check Revert "ACPI / video: Ignore BIOS initial backlight value for HP 250 G1" ACPI / video: Quirk initial backlight level 0 ACPI / video: Fix initial level validity test intel_pstate: skip the driver if ACPI has power mgmt option PM / hibernate: Avoid overflow in hibernate_preallocate_memory() ACPI / hotplug: Do not execute "insert in progress" _OST ACPI / hotplug: Carry out PCI root eject directly ACPI / hotplug: Merge device hot-removal routines ACPI / hotplug: Make acpi_bus_hot_remove_device() internal ACPI / hotplug: Simplify device ejection routines ACPI / hotplug: Fix handle_root_bridge_removal() ACPI / hotplug: Refuse to hot-remove all objects with disabled hotplug ACPI / scan: Start matching drivers after trying scan handlers ACPI: Remove acpi_pci_slot_init() headers from internal.h ACPI / blacklist: fix name of ThinkPad Edge E530 PowerCap: Fix build error with option -Werror=format-security ... Conflicts: arch/arm/mach-omap2/opp.c drivers/Kconfig drivers/spi/spi.c
Diffstat (limited to 'arch/arm/mach-vexpress')
-rw-r--r--arch/arm/mach-vexpress/Kconfig12
-rw-r--r--arch/arm/mach-vexpress/Makefile3
-rw-r--r--arch/arm/mach-vexpress/spc.c366
-rw-r--r--arch/arm/mach-vexpress/spc.h2
-rw-r--r--arch/arm/mach-vexpress/tc2_pm.c7
5 files changed, 385 insertions, 5 deletions
diff --git a/arch/arm/mach-vexpress/Kconfig b/arch/arm/mach-vexpress/Kconfig
index cbbb81e0e50..4a70be485ff 100644
--- a/arch/arm/mach-vexpress/Kconfig
+++ b/arch/arm/mach-vexpress/Kconfig
@@ -65,10 +65,22 @@ config ARCH_VEXPRESS_DCSCB
This is needed to provide CPU and cluster power management
on RTSM implementing big.LITTLE.
+config ARCH_VEXPRESS_SPC
+ bool "Versatile Express Serial Power Controller (SPC)"
+ select ARCH_HAS_CPUFREQ
+ select ARCH_HAS_OPP
+ select PM_OPP
+ help
+ The TC2 (A15x2 A7x3) versatile express core tile integrates a logic
+ block called Serial Power Controller (SPC) that provides the interface
+ between the dual cluster test-chip and the M3 microcontroller that
+ carries out power management.
+
config ARCH_VEXPRESS_TC2_PM
bool "Versatile Express TC2 power management"
depends on MCPM
select ARM_CCI
+ select ARCH_VEXPRESS_SPC
help
Support for CPU and cluster power management on Versatile Express
with a TC2 (A15x2 A7x3) big.LITTLE core tile.
diff --git a/arch/arm/mach-vexpress/Makefile b/arch/arm/mach-vexpress/Makefile
index 505e64ab3ea..0997e0b7494 100644
--- a/arch/arm/mach-vexpress/Makefile
+++ b/arch/arm/mach-vexpress/Makefile
@@ -8,7 +8,8 @@ obj-y := v2m.o
obj-$(CONFIG_ARCH_VEXPRESS_CA9X4) += ct-ca9x4.o
obj-$(CONFIG_ARCH_VEXPRESS_DCSCB) += dcscb.o dcscb_setup.o
CFLAGS_dcscb.o += -march=armv7-a
-obj-$(CONFIG_ARCH_VEXPRESS_TC2_PM) += tc2_pm.o spc.o
+obj-$(CONFIG_ARCH_VEXPRESS_SPC) += spc.o
+obj-$(CONFIG_ARCH_VEXPRESS_TC2_PM) += tc2_pm.o
CFLAGS_tc2_pm.o += -march=armv7-a
obj-$(CONFIG_SMP) += platsmp.o
obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
diff --git a/arch/arm/mach-vexpress/spc.c b/arch/arm/mach-vexpress/spc.c
index eefb029197c..033d34dcbd3 100644
--- a/arch/arm/mach-vexpress/spc.c
+++ b/arch/arm/mach-vexpress/spc.c
@@ -17,14 +17,31 @@
* GNU General Public License for more details.
*/
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/cpu.h>
+#include <linux/delay.h>
#include <linux/err.h>
+#include <linux/interrupt.h>
#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/pm_opp.h>
#include <linux/slab.h>
+#include <linux/semaphore.h>
#include <asm/cacheflush.h>
#define SPCLOG "vexpress-spc: "
+#define PERF_LVL_A15 0x00
+#define PERF_REQ_A15 0x04
+#define PERF_LVL_A7 0x08
+#define PERF_REQ_A7 0x0c
+#define COMMS 0x10
+#define COMMS_REQ 0x14
+#define PWC_STATUS 0x18
+#define PWC_FLAG 0x1c
+
/* SPC wake-up IRQs status and mask */
#define WAKE_INT_MASK 0x24
#define WAKE_INT_RAW 0x28
@@ -36,12 +53,45 @@
#define A15_BX_ADDR0 0x68
#define A7_BX_ADDR0 0x78
+/* SPC system config interface registers */
+#define SYSCFG_WDATA 0x70
+#define SYSCFG_RDATA 0x74
+
+/* A15/A7 OPP virtual register base */
+#define A15_PERFVAL_BASE 0xC10
+#define A7_PERFVAL_BASE 0xC30
+
+/* Config interface control bits */
+#define SYSCFG_START (1 << 31)
+#define SYSCFG_SCC (6 << 20)
+#define SYSCFG_STAT (14 << 20)
+
/* wake-up interrupt masks */
#define GBL_WAKEUP_INT_MSK (0x3 << 10)
/* TC2 static dual-cluster configuration */
#define MAX_CLUSTERS 2
+/*
+ * Even though the SPC takes max 3-5 ms to complete any OPP/COMMS
+ * operation, the operation could start just before jiffie is about
+ * to be incremented. So setting timeout value of 20ms = 2jiffies@100Hz
+ */
+#define TIMEOUT_US 20000
+
+#define MAX_OPPS 8
+#define CA15_DVFS 0
+#define CA7_DVFS 1
+#define SPC_SYS_CFG 2
+#define STAT_COMPLETE(type) ((1 << 0) << (type << 2))
+#define STAT_ERR(type) ((1 << 1) << (type << 2))
+#define RESPONSE_MASK(type) (STAT_COMPLETE(type) | STAT_ERR(type))
+
+struct ve_spc_opp {
+ unsigned long freq;
+ unsigned long u_volt;
+};
+
struct ve_spc_drvdata {
void __iomem *baseaddr;
/*
@@ -49,6 +99,12 @@ struct ve_spc_drvdata {
* It corresponds to A15 processors MPIDR[15:8] bitfield
*/
u32 a15_clusid;
+ uint32_t cur_rsp_mask;
+ uint32_t cur_rsp_stat;
+ struct semaphore sem;
+ struct completion done;
+ struct ve_spc_opp *opps[MAX_CLUSTERS];
+ int num_opps[MAX_CLUSTERS];
};
static struct ve_spc_drvdata *info;
@@ -157,8 +213,197 @@ void ve_spc_powerdown(u32 cluster, bool enable)
writel_relaxed(enable, info->baseaddr + pwdrn_reg);
}
-int __init ve_spc_init(void __iomem *baseaddr, u32 a15_clusid)
+static int ve_spc_get_performance(int cluster, u32 *freq)
+{
+ struct ve_spc_opp *opps = info->opps[cluster];
+ u32 perf_cfg_reg = 0;
+ u32 perf;
+
+ perf_cfg_reg = cluster_is_a15(cluster) ? PERF_LVL_A15 : PERF_LVL_A7;
+
+ perf = readl_relaxed(info->baseaddr + perf_cfg_reg);
+ if (perf >= info->num_opps[cluster])
+ return -EINVAL;
+
+ opps += perf;
+ *freq = opps->freq;
+
+ return 0;
+}
+
+/* find closest match to given frequency in OPP table */
+static int ve_spc_round_performance(int cluster, u32 freq)
+{
+ int idx, max_opp = info->num_opps[cluster];
+ struct ve_spc_opp *opps = info->opps[cluster];
+ u32 fmin = 0, fmax = ~0, ftmp;
+
+ freq /= 1000; /* OPP entries in kHz */
+ for (idx = 0; idx < max_opp; idx++, opps++) {
+ ftmp = opps->freq;
+ if (ftmp >= freq) {
+ if (ftmp <= fmax)
+ fmax = ftmp;
+ } else {
+ if (ftmp >= fmin)
+ fmin = ftmp;
+ }
+ }
+ if (fmax != ~0)
+ return fmax * 1000;
+ else
+ return fmin * 1000;
+}
+
+static int ve_spc_find_performance_index(int cluster, u32 freq)
+{
+ int idx, max_opp = info->num_opps[cluster];
+ struct ve_spc_opp *opps = info->opps[cluster];
+
+ for (idx = 0; idx < max_opp; idx++, opps++)
+ if (opps->freq == freq)
+ break;
+ return (idx == max_opp) ? -EINVAL : idx;
+}
+
+static int ve_spc_waitforcompletion(int req_type)
+{
+ int ret = wait_for_completion_interruptible_timeout(
+ &info->done, usecs_to_jiffies(TIMEOUT_US));
+ if (ret == 0)
+ ret = -ETIMEDOUT;
+ else if (ret > 0)
+ ret = info->cur_rsp_stat & STAT_COMPLETE(req_type) ? 0 : -EIO;
+ return ret;
+}
+
+static int ve_spc_set_performance(int cluster, u32 freq)
+{
+ u32 perf_cfg_reg, perf_stat_reg;
+ int ret, perf, req_type;
+
+ if (cluster_is_a15(cluster)) {
+ req_type = CA15_DVFS;
+ perf_cfg_reg = PERF_LVL_A15;
+ perf_stat_reg = PERF_REQ_A15;
+ } else {
+ req_type = CA7_DVFS;
+ perf_cfg_reg = PERF_LVL_A7;
+ perf_stat_reg = PERF_REQ_A7;
+ }
+
+ perf = ve_spc_find_performance_index(cluster, freq);
+
+ if (perf < 0)
+ return perf;
+
+ if (down_timeout(&info->sem, usecs_to_jiffies(TIMEOUT_US)))
+ return -ETIME;
+
+ init_completion(&info->done);
+ info->cur_rsp_mask = RESPONSE_MASK(req_type);
+
+ writel(perf, info->baseaddr + perf_cfg_reg);
+ ret = ve_spc_waitforcompletion(req_type);
+
+ info->cur_rsp_mask = 0;
+ up(&info->sem);
+
+ return ret;
+}
+
+static int ve_spc_read_sys_cfg(int func, int offset, uint32_t *data)
+{
+ int ret;
+
+ if (down_timeout(&info->sem, usecs_to_jiffies(TIMEOUT_US)))
+ return -ETIME;
+
+ init_completion(&info->done);
+ info->cur_rsp_mask = RESPONSE_MASK(SPC_SYS_CFG);
+
+ /* Set the control value */
+ writel(SYSCFG_START | func | offset >> 2, info->baseaddr + COMMS);
+ ret = ve_spc_waitforcompletion(SPC_SYS_CFG);
+
+ if (ret == 0)
+ *data = readl(info->baseaddr + SYSCFG_RDATA);
+
+ info->cur_rsp_mask = 0;
+ up(&info->sem);
+
+ return ret;
+}
+
+static irqreturn_t ve_spc_irq_handler(int irq, void *data)
+{
+ struct ve_spc_drvdata *drv_data = data;
+ uint32_t status = readl_relaxed(drv_data->baseaddr + PWC_STATUS);
+
+ if (info->cur_rsp_mask & status) {
+ info->cur_rsp_stat = status;
+ complete(&drv_data->done);
+ }
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * +--------------------------+
+ * | 31 20 | 19 0 |
+ * +--------------------------+
+ * | u_volt | freq(kHz) |
+ * +--------------------------+
+ */
+#define MULT_FACTOR 20
+#define VOLT_SHIFT 20
+#define FREQ_MASK (0xFFFFF)
+static int ve_spc_populate_opps(uint32_t cluster)
{
+ uint32_t data = 0, off, ret, idx;
+ struct ve_spc_opp *opps;
+
+ opps = kzalloc(sizeof(*opps) * MAX_OPPS, GFP_KERNEL);
+ if (!opps)
+ return -ENOMEM;
+
+ info->opps[cluster] = opps;
+
+ off = cluster_is_a15(cluster) ? A15_PERFVAL_BASE : A7_PERFVAL_BASE;
+ for (idx = 0; idx < MAX_OPPS; idx++, off += 4, opps++) {
+ ret = ve_spc_read_sys_cfg(SYSCFG_SCC, off, &data);
+ if (!ret) {
+ opps->freq = (data & FREQ_MASK) * MULT_FACTOR;
+ opps->u_volt = data >> VOLT_SHIFT;
+ } else {
+ break;
+ }
+ }
+ info->num_opps[cluster] = idx;
+
+ return ret;
+}
+
+static int ve_init_opp_table(struct device *cpu_dev)
+{
+ int cluster = topology_physical_package_id(cpu_dev->id);
+ int idx, ret = 0, max_opp = info->num_opps[cluster];
+ struct ve_spc_opp *opps = info->opps[cluster];
+
+ for (idx = 0; idx < max_opp; idx++, opps++) {
+ ret = dev_pm_opp_add(cpu_dev, opps->freq * 1000, opps->u_volt);
+ if (ret) {
+ dev_warn(cpu_dev, "failed to add opp %lu %lu\n",
+ opps->freq, opps->u_volt);
+ return ret;
+ }
+ }
+ return ret;
+}
+
+int __init ve_spc_init(void __iomem *baseaddr, u32 a15_clusid, int irq)
+{
+ int ret;
info = kzalloc(sizeof(*info), GFP_KERNEL);
if (!info) {
pr_err(SPCLOG "unable to allocate mem\n");
@@ -168,6 +413,25 @@ int __init ve_spc_init(void __iomem *baseaddr, u32 a15_clusid)
info->baseaddr = baseaddr;
info->a15_clusid = a15_clusid;
+ if (irq <= 0) {
+ pr_err(SPCLOG "Invalid IRQ %d\n", irq);
+ kfree(info);
+ return -EINVAL;
+ }
+
+ init_completion(&info->done);
+
+ readl_relaxed(info->baseaddr + PWC_STATUS);
+
+ ret = request_irq(irq, ve_spc_irq_handler, IRQF_TRIGGER_HIGH
+ | IRQF_ONESHOT, "vexpress-spc", info);
+ if (ret) {
+ pr_err(SPCLOG "IRQ %d request failed\n", irq);
+ kfree(info);
+ return -ENODEV;
+ }
+
+ sema_init(&info->sem, 1);
/*
* Multi-cluster systems may need this data when non-coherent, during
* cluster power-up/power-down. Make sure driver info reaches main
@@ -178,3 +442,103 @@ int __init ve_spc_init(void __iomem *baseaddr, u32 a15_clusid)
return 0;
}
+
+struct clk_spc {
+ struct clk_hw hw;
+ int cluster;
+};
+
+#define to_clk_spc(spc) container_of(spc, struct clk_spc, hw)
+static unsigned long spc_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clk_spc *spc = to_clk_spc(hw);
+ u32 freq;
+
+ if (ve_spc_get_performance(spc->cluster, &freq))
+ return -EIO;
+
+ return freq * 1000;
+}
+
+static long spc_round_rate(struct clk_hw *hw, unsigned long drate,
+ unsigned long *parent_rate)
+{
+ struct clk_spc *spc = to_clk_spc(hw);
+
+ return ve_spc_round_performance(spc->cluster, drate);
+}
+
+static int spc_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct clk_spc *spc = to_clk_spc(hw);
+
+ return ve_spc_set_performance(spc->cluster, rate / 1000);
+}
+
+static struct clk_ops clk_spc_ops = {
+ .recalc_rate = spc_recalc_rate,
+ .round_rate = spc_round_rate,
+ .set_rate = spc_set_rate,
+};
+
+static struct clk *ve_spc_clk_register(struct device *cpu_dev)
+{
+ struct clk_init_data init;
+ struct clk_spc *spc;
+
+ spc = kzalloc(sizeof(*spc), GFP_KERNEL);
+ if (!spc) {
+ pr_err("could not allocate spc clk\n");
+ return ERR_PTR(-ENOMEM);
+ }
+
+ spc->hw.init = &init;
+ spc->cluster = topology_physical_package_id(cpu_dev->id);
+
+ init.name = dev_name(cpu_dev);
+ init.ops = &clk_spc_ops;
+ init.flags = CLK_IS_ROOT | CLK_GET_RATE_NOCACHE;
+ init.num_parents = 0;
+
+ return devm_clk_register(cpu_dev, &spc->hw);
+}
+
+static int __init ve_spc_clk_init(void)
+{
+ int cpu;
+ struct clk *clk;
+
+ if (!info)
+ return 0; /* Continue only if SPC is initialised */
+
+ if (ve_spc_populate_opps(0) || ve_spc_populate_opps(1)) {
+ pr_err("failed to build OPP table\n");
+ return -ENODEV;
+ }
+
+ for_each_possible_cpu(cpu) {
+ struct device *cpu_dev = get_cpu_device(cpu);
+ if (!cpu_dev) {
+ pr_warn("failed to get cpu%d device\n", cpu);
+ continue;
+ }
+ clk = ve_spc_clk_register(cpu_dev);
+ if (IS_ERR(clk)) {
+ pr_warn("failed to register cpu%d clock\n", cpu);
+ continue;
+ }
+ if (clk_register_clkdev(clk, NULL, dev_name(cpu_dev))) {
+ pr_warn("failed to register cpu%d clock lookup\n", cpu);
+ continue;
+ }
+
+ if (ve_init_opp_table(cpu_dev))
+ pr_warn("failed to initialise cpu%d opp table\n", cpu);
+ }
+
+ platform_device_register_simple("vexpress-spc-cpufreq", -1, NULL, 0);
+ return 0;
+}
+module_init(ve_spc_clk_init);
diff --git a/arch/arm/mach-vexpress/spc.h b/arch/arm/mach-vexpress/spc.h
index 5f7e4a446a1..dbd44c3720f 100644
--- a/arch/arm/mach-vexpress/spc.h
+++ b/arch/arm/mach-vexpress/spc.h
@@ -15,7 +15,7 @@
#ifndef __SPC_H_
#define __SPC_H_
-int __init ve_spc_init(void __iomem *base, u32 a15_clusid);
+int __init ve_spc_init(void __iomem *base, u32 a15_clusid, int irq);
void ve_spc_global_wakeup_irq(bool set);
void ve_spc_cpu_wakeup_irq(u32 cluster, u32 cpu, bool set);
void ve_spc_set_resume_addr(u32 cluster, u32 cpu, u32 addr);
diff --git a/arch/arm/mach-vexpress/tc2_pm.c b/arch/arm/mach-vexpress/tc2_pm.c
index 4eb92ebfd95..05a364c5077 100644
--- a/arch/arm/mach-vexpress/tc2_pm.c
+++ b/arch/arm/mach-vexpress/tc2_pm.c
@@ -16,6 +16,7 @@
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/of_address.h>
+#include <linux/of_irq.h>
#include <linux/spinlock.h>
#include <linux/errno.h>
#include <linux/irqchip/arm-gic.h>
@@ -267,7 +268,7 @@ static void __naked tc2_pm_power_up_setup(unsigned int affinity_level)
static int __init tc2_pm_init(void)
{
- int ret;
+ int ret, irq;
void __iomem *scc;
u32 a15_cluster_id, a7_cluster_id, sys_info;
struct device_node *np;
@@ -292,13 +293,15 @@ static int __init tc2_pm_init(void)
tc2_nr_cpus[a15_cluster_id] = (sys_info >> 16) & 0xf;
tc2_nr_cpus[a7_cluster_id] = (sys_info >> 20) & 0xf;
+ irq = irq_of_parse_and_map(np, 0);
+
/*
* A subset of the SCC registers is also used to communicate
* with the SPC (power controller). We need to be able to
* drive it very early in the boot process to power up
* processors, so we initialize the SPC driver here.
*/
- ret = ve_spc_init(scc + SPC_BASE, a15_cluster_id);
+ ret = ve_spc_init(scc + SPC_BASE, a15_cluster_id, irq);
if (ret)
return ret;