Add machine-dependent MCPM call-backs for Exynos5420. These are used
to power up/down the secondary CPUs during boot, shutdown, s2r and
switching.
Signed-off-by: Thomas Abraham <thomas.ab@xxxxxxxxxxx>
Signed-off-by: Inderpal Singh <inderpal.s@xxxxxxxxxxx>
Signed-off-by: Andrew Bresticker <abrestic@xxxxxxxxxxxx>
Signed-off-by: Abhilash Kesavan <a.kesavan@xxxxxxxxxxx>
---
arch/arm/mach-exynos/Kconfig | 9 +
arch/arm/mach-exynos/Makefile | 2 +
arch/arm/mach-exynos/common.h | 1 +
arch/arm/mach-exynos/exynos.c | 1 +
arch/arm/mach-exynos/mcpm-exynos-setup.S | 35 +++
arch/arm/mach-exynos/mcpm-exynos.c | 444 ++++++++++++++++++++++++++++++
arch/arm/mach-exynos/platsmp.c | 19 ++
arch/arm/mach-exynos/regs-pmu.h | 2 +
8 files changed, 513 insertions(+)
create mode 100644 arch/arm/mach-exynos/mcpm-exynos-setup.S
create mode 100644 arch/arm/mach-exynos/mcpm-exynos.c
diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index fc8bf18..a921a80 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -110,4 +110,13 @@ config SOC_EXYNOS5440
endmenu
+config EXYNOS5420_MCPM
+ bool "Exynos5420 Multi-Cluster PM support"
+ depends on MCPM && SOC_EXYNOS5420
+ select ARM_CCI
+ help
+ Support for Dual Cluster Switching (A15/A7) on Exynos5420.
+ This is needed to provide CPU and cluster power management
+ on Exynos5420 implementing big.LITTLE.
+
endif
diff --git a/arch/arm/mach-exynos/Makefile b/arch/arm/mach-exynos/Makefile
index a656dbe..776fcbd 100644
--- a/arch/arm/mach-exynos/Makefile
+++ b/arch/arm/mach-exynos/Makefile
@@ -29,3 +29,5 @@ obj-$(CONFIG_ARCH_EXYNOS) += firmware.o
plus_sec := $(call as-instr,.arch_extension sec,+sec)
AFLAGS_exynos-smc.o :=-Wa,-march=armv7-a$(plus_sec)
+
+obj-$(CONFIG_EXYNOS5420_MCPM) += mcpm-exynos.o mcpm-exynos-setup.o
diff --git a/arch/arm/mach-exynos/common.h b/arch/arm/mach-exynos/common.h
index 347afc2..a023ccc 100644
--- a/arch/arm/mach-exynos/common.h
+++ b/arch/arm/mach-exynos/common.h
@@ -51,6 +51,7 @@ static inline void exynos_pm_init(void) {}
extern void exynos_cpu_resume(void);
extern struct smp_operations exynos_smp_ops;
+extern bool exynos_smp_init(void);
extern void exynos_cpu_die(unsigned int cpu);
diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c
index b1cf9d5..5b72b5e 100644
--- a/arch/arm/mach-exynos/exynos.c
+++ b/arch/arm/mach-exynos/exynos.c
@@ -412,6 +412,7 @@ DT_MACHINE_START(EXYNOS_DT, "SAMSUNG EXYNOS (Flattened Device Tree)")
/* Maintainer: Thomas Abraham <thomas.abraham@xxxxxxxxxx> */
/* Maintainer: Kukjin Kim <kgene.kim@xxxxxxxxxxx> */
.smp = smp_ops(exynos_smp_ops),
+ .smp_init = smp_init_ops(exynos_smp_init),
.map_io = exynos_init_io,
.init_early = exynos_firmware_init,
.init_machine = exynos_dt_machine_init,
diff --git a/arch/arm/mach-exynos/mcpm-exynos-setup.S b/arch/arm/mach-exynos/mcpm-exynos-setup.S
new file mode 100644
index 0000000..990c0d5
--- /dev/null
+++ b/arch/arm/mach-exynos/mcpm-exynos-setup.S
@@ -0,0 +1,35 @@
+/*
+ * Exynos low-level MCPM setup
+ *
+ * Copyright (C) 2013-2014 Google, Inc
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/linkage.h>
+
+ENTRY(exynos_power_up_setup)
+
+ cmp r0, #0 @ check affinity level
+ beq 1f
+
+/*
+ * Enable cluster-level coherency, in preparation for turning on the MMU.
+ * The ACTLR SMP bit does not need to be set here, because cpu_resume()
+ * already restores that.
+ */
+ b cci_enable_port_for_self
+
+1: @ Implementation-specific local CPU setup operations should go here,
+ @ if any. In this case, there is nothing to do.
+
+ bx lr
+
+ENDPROC(exynos_power_up_setup)
diff --git a/arch/arm/mach-exynos/mcpm-exynos.c b/arch/arm/mach-exynos/mcpm-exynos.c
new file mode 100644
index 0000000..46d4968
--- /dev/null
+++ b/arch/arm/mach-exynos/mcpm-exynos.c
@@ -0,0 +1,444 @@
+/*
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * arch/arm/mach-exynos/mcpm-exynos.c
+ *
+ * Based on arch/arm/mach-vexpress/dcscb.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/io.h>
+#include <linux/spinlock.h>
+#include <linux/uaccess.h>
+#include <linux/miscdevice.h>
+#include <linux/fs.h>
+#include <linux/delay.h>
+#include <linux/arm-cci.h>
+
+#include <asm/mcpm.h>
+#include <asm/cputype.h>
+#include <asm/cp15.h>
+
+#include <plat/cpu.h>
+#include "regs-pmu.h"
+
+#define EXYNOS5420_CPUS_PER_CLUSTER 4
+#define EXYNOS5420_NR_CLUSTERS 2
+
+/* Secondary CPU entry point */
+#define REG_ENTRY_ADDR (S5P_VA_SYSRAM_NS + 0x1C)
+
+#define EXYNOS_CORE_LOCAL_PWR_EN 0x3
+#define EXYNOS_CORE_LOCAL_PWR_DIS 0x0
+
+#define EXYNOS_ARM_COMMON_CONFIGURATION S5P_PMUREG(0x2500)
+#define EXYNOS_ARM_L2_CONFIGURATION S5P_PMUREG(0x2600)
+
+#define EXYNOS_ARM_CORE_CONFIGURATION(_nr) \
+ (S5P_ARM_CORE0_CONFIGURATION + ((_nr) * 0x80))
+#define EXYNOS_ARM_CORE_STATUS(_nr) \
+ (S5P_ARM_CORE0_STATUS + ((_nr) * 0x80))
+
+#define EXYNOS_COMMON_CONFIGURATION(_nr) \
+ (EXYNOS_ARM_COMMON_CONFIGURATION + ((_nr) * 0x80))
+#define EXYNOS_COMMON_STATUS(_nr) \
+ (EXYNOS_COMMON_CONFIGURATION(_nr) + 0x4)
+
+#define EXYNOS_L2_CONFIGURATION(_nr) \
+ (EXYNOS_ARM_L2_CONFIGURATION + ((_nr) * 0x80))
+#define EXYNOS_L2_STATUS(_nr) \
+ (EXYNOS_L2_CONFIGURATION(_nr) + 0x4)
+
+/*
+ * We can't use regular spinlocks. In the switcher case, it is possible
+ * for an outbound CPU to call power_down() after its inbound counterpart
+ * is already live using the same logical CPU number which trips lockdep
+ * debugging.
+ */
+static arch_spinlock_t bl_lock = __ARCH_SPIN_LOCK_UNLOCKED;
+static int
+cpu_use_count[EXYNOS5420_CPUS_PER_CLUSTER][EXYNOS5420_NR_CLUSTERS];
+
+static bool exynos_core_power_state(unsigned int cpu, unsigned int cluster)
+{
+ unsigned int val;
+ unsigned int cpunr = cpu + (cluster * EXYNOS5420_CPUS_PER_CLUSTER);
+
+ val = __raw_readl(EXYNOS_ARM_CORE_STATUS(cpunr)) &
+ EXYNOS_CORE_LOCAL_PWR_EN;
+ return !!val;
+}
+
+static void exynos_core_power_control(unsigned int cpu, unsigned int cluster,
+ int enable)
+{
+ unsigned int val = EXYNOS_CORE_LOCAL_PWR_DIS;
+ unsigned int cpunr = cpu + (cluster * EXYNOS5420_CPUS_PER_CLUSTER);
+
+ if (exynos_core_power_state(cpu, cluster) == enable)
+ return;
+
+ if (enable)
+ val = EXYNOS_CORE_LOCAL_PWR_EN;
+ __raw_writel(val, EXYNOS_ARM_CORE_CONFIGURATION(cpunr));
+}
+
+static void exynos_cluster_power_control(unsigned int cluster, int enable)
+{
+ unsigned long timeout = jiffies + msecs_to_jiffies(20);
+ unsigned int status, val = EXYNOS_CORE_LOCAL_PWR_DIS;
+
+ if (enable)
+ val = EXYNOS_CORE_LOCAL_PWR_EN;
+
+ status = __raw_readl(EXYNOS_COMMON_STATUS(cluster));
+ if ((status & EXYNOS_CORE_LOCAL_PWR_EN) == val)
+ return;
+
+ __raw_writel(val, EXYNOS_COMMON_CONFIGURATION(cluster));
+ /* Wait until cluster power control is applied */
+ while (time_before(jiffies, timeout)) {
+ status = __raw_readl(EXYNOS_COMMON_STATUS(cluster));
+
+ if ((status & EXYNOS_CORE_LOCAL_PWR_EN) == val)
+ return;
+
+ cpu_relax();
+ }
+ pr_warn("timed out waiting for cluster %u to power %s\n", cluster,
+ enable ? "on" : "off");
+}
+
+static int exynos_power_up(unsigned int cpu, unsigned int cluster)
+{
+ unsigned long mpidr;
+
+ pr_debug("%s: cpu %u cluster %u\n", __func__, cpu, cluster);
+ if (cpu >= EXYNOS5420_CPUS_PER_CLUSTER ||
+ cluster >= EXYNOS5420_NR_CLUSTERS)
+ return -EINVAL;
+
+ /*
+ * Since this is called with IRQs enabled, and no arch_spin_lock_irq
+ * variant exists, we need to disable IRQs manually here.
+ */
+ local_irq_disable();
+ arch_spin_lock(&bl_lock);
+
+ cpu_use_count[cpu][cluster]++;
+ if (cpu_use_count[cpu][cluster] == 1) {
+ bool was_cluster_down =
+ __mcpm_cluster_state(cluster) == CLUSTER_DOWN;
+
+ if (was_cluster_down)
+ exynos_cluster_power_control(cluster, 1);
+ exynos_core_power_control(cpu, cluster, 1);
+
+ if (was_cluster_down) {
+ mpidr = read_cpuid_mpidr();
+ udelay(10);
+ cci_control_port_by_cpu(mpidr, true);
+ }
+
+ /* CPU should be powered up there */
+ /* Also setup Cluster Power Sequence here */
+ } else if (cpu_use_count[cpu][cluster] != 2) {
+ /*
+ * The only possible values are:
+ * 0 = CPU down
+ * 1 = CPU (still) up
+ * 2 = CPU requested to be up before it had a chance
+ * to actually make itself down.
+ * Any other value is a bug.
+ */
+ BUG();
+ }
+
+ arch_spin_unlock(&bl_lock);
+ local_irq_enable();
+
+ return 0;
+}
+
+static void exynos_power_down(void)
+{
+ unsigned int mpidr, cpu, cluster, cpumask;
+ bool last_man = false, skip_wfi = false;
+
+ mpidr = read_cpuid_mpidr();
+ cpu = MPIDR_AFFINITY_LEVEL(mpidr, 0);
+ cluster = MPIDR_AFFINITY_LEVEL(mpidr, 1);
+ cpumask = (1 << cpu);
+
+ pr_debug("%s: cpu %u cluster %u\n", __func__, cpu, cluster);
+ BUG_ON(cpu >= EXYNOS5420_CPUS_PER_CLUSTER ||
+ cluster >= EXYNOS5420_NR_CLUSTERS);
+
+ __mcpm_cpu_going_down(cpu, cluster);
+
+ arch_spin_lock(&bl_lock);
+ BUG_ON(__mcpm_cluster_state(cluster) != CLUSTER_UP);
+ cpu_use_count[cpu][cluster]--;
+ if (cpu_use_count[cpu][cluster] == 0) {
+ int cnt = 0, i;
+
+ exynos_core_power_control(cpu, cluster, 0);
+ for (i = 0; i < EXYNOS5420_CPUS_PER_CLUSTER; i++)
+ cnt += cpu_use_count[i][cluster];
+ if (cnt == 0)
+ last_man = true;
+ } else if (cpu_use_count[cpu][cluster] == 1) {
+ /*
+ * A power_up request went ahead of us.
+ * Even if we do not want to shut this CPU down,
+ * the caller expects a certain state as if the WFI
+ * was aborted. So let's continue with cache cleaning.
+ */
+ skip_wfi = true;
+ } else {
+ BUG();
+ }
+
+ if (last_man && __mcpm_outbound_enter_critical(cpu, cluster)) {
+ arch_spin_unlock(&bl_lock);
+
+ /*
+ * Flush all cache levels for this cluster.
+ *
+ * To do so we do:
+ * - Clear the SCTLR.C bit to prevent further cache allocations
+ * - Flush the whole cache
+ * - Clear the ACTLR "SMP" bit to disable local coherency
+ *
+ * Let's do it in the safest possible way i.e. with
+ * no memory access within the following sequence
+ * including to the stack.
+ *
+ * Note: fp is preserved to the stack explicitly prior doing
+ * this since adding it to the clobber list is incompatible
+ * with having CONFIG_FRAME_POINTER=y.
+ *
+ * The common v7_exit_coherency_flush API that could not be
+ * used because of the Erratum 799270 workaround.
+ */
+ asm volatile(
+ "stmfd sp!, {fp, ip}\n\t"
+ "mrc p15, 0, r0, c1, c0, 0 @ get SCTLR\n\t"
+ "bic r0, r0, #"__stringify(CR_C)"\n\t"
+ "mcr p15, 0, r0, c1, c0, 0 @ set SCTLR\n\t"
+ "isb\n\t"
+ "bl v7_flush_dcache_all\n\t"
+ "clrex\n\t"
+ "mrc p15, 0, r0, c1, c0, 1 @ get ACTLR\n\t"
+ "bic r0, r0, #(1 << 6) @ disable local coherency\n\t"
+ /* Dummy Load of a device register to avoid Erratum 799270 */
+ "ldr r4, [%0]\n\t"
+ "and r4, r4, #0\n\t"
+ "orr r0, r0, r4\n\t"
+ "mcr p15, 0, r0, c1, c0, 1 @ set ACTLR\n\t"
+ "isb\n\t"
+ "dsb\n\t"
+ "ldmfd sp!, {fp, ip}"
+ :
+ : "Ir" (S5P_INFORM0)
+ : "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r9", "r10", "lr", "memory");
+
+ /*
+ * This is a harmless no-op. On platforms with a real
+ * outer cache this might either be needed or not,
+ * depending on where the outer cache sits.
+ */
+ outer_flush_all();
+
+ /*
+ * Disable cluster-level coherency by masking
+ * incoming snoops and DVM messages:
+ */
+ cci_control_port_by_cpu(mpidr, false);
+ cci_control_port_by_cpu(mpidr ^ (1 << 8), false);
+
+ __mcpm_outbound_leave_critical(cluster, CLUSTER_DOWN);
+ } else {
+ arch_spin_unlock(&bl_lock);
+
+ /*
+ * Flush the local CPU cache.
+ * Let's do it in the safest possible way as above.
+ */
+ asm volatile(
+ "stmfd sp!, {fp, ip}\n\t"
+ "mrc p15, 0, r0, c1, c0, 0 @ get SCTLR\n\t"
+ "bic r0, r0, #"__stringify(CR_C)"\n\t"
+ "mcr p15, 0, r0, c1, c0, 0 @ set SCTLR\n\t"
+ "isb\n\t"
+ "bl v7_flush_dcache_louis\n\t"
+ "clrex\n\t"
+ "mrc p15, 0, r0, c1, c0, 1 @ get ACTLR\n\t"
+ "bic r0, r0, #(1 << 6) @ disable local coherency\n\t"
+ /* Dummy Load of a device register to avoid Erratum 799270 */
+ "ldr r4, [%0]\n\t"
+ "and r4, r4, #0\n\t"
+ "orr r0, r0, r4\n\t"
+ "mcr p15, 0, r0, c1, c0, 1 @ set ACTLR\n\t"
+ "isb\n\t"
+ "dsb\n\t"
+ "ldmfd sp!, {fp, ip}"
+ :
+ : "Ir" (S5P_INFORM0)
+ : "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r9", "r10", "lr", "memory");
+ }
+
+ __mcpm_cpu_down(cpu, cluster);
+
+ /* Now we are prepared for power-down, do it: */
+ dsb();
+ if (!skip_wfi)
+ wfi();
+
+ /* Not dead at this point? Let our caller cope. */
+}
+
+static int exynos_power_down_finish(unsigned int cpu, unsigned int cluster)
+{
+ pr_debug("%s: cpu %u cluster %u\n", __func__, cpu, cluster);
+ BUG_ON(cpu >= EXYNOS5420_CPUS_PER_CLUSTER ||
+ cluster >= EXYNOS5420_NR_CLUSTERS);
+
+ /* Wait for the core state to be OFF */
+ while (exynos_core_power_state(cpu, cluster) != 0x0)
+ ;
+
+ return 0; /* success: the CPU is halted */
+}
+
+static const struct mcpm_platform_ops exynos_power_ops = {
+ .power_up = exynos_power_up,
+ .power_down = exynos_power_down,
+ .power_down_finish = exynos_power_down_finish,
+};
+
+static void __init exynos_mcpm_usage_count_init(void)
+{
+ unsigned int mpidr, cpu, cluster, i;
+
+ mpidr = read_cpuid_mpidr();
+ cpu = MPIDR_AFFINITY_LEVEL(mpidr, 0);
+ cluster = MPIDR_AFFINITY_LEVEL(mpidr, 1);
+
+ pr_debug("%s: cpu %u cluster %u\n", __func__, cpu, cluster);
+ BUG_ON(cpu >= EXYNOS5420_CPUS_PER_CLUSTER ||
+ cluster >= EXYNOS5420_NR_CLUSTERS);
+
+ for (i = 0; i < EXYNOS5420_CPUS_PER_CLUSTER; i++) {
+ cpu_use_count[i][0] = 0;
+ cpu_use_count[i][1] = 0;
+ }
+ cpu_use_count[cpu][cluster] = 1;
+}
+
+static size_t bL_check_status(char *info)
+{
+ size_t len = 0;
+ int i;
+
+ len += sprintf(&info[len], "\t0 1 2 3 L2\n");
+ len += sprintf(&info[len], "[A15] ");
+ for (i = 0; i < 4; i++) {
+ len += sprintf(&info[len], "%d ",
+ (readl(EXYNOS_ARM_CORE_STATUS(i)) & 0x3) == 3 ? 1 : 0);
+ }
+ len += sprintf(&info[len], "%d\n",
+ (readl(EXYNOS_COMMON_STATUS(0)) & 0x3) == 3 ? 1 : 0);
+
+ len += sprintf(&info[len], "[A7] ");
+ for (i = 4; i < 8; i++)
+ len += sprintf(&info[len], "%d ",
+ (readl(EXYNOS_ARM_CORE_STATUS(i)) & 0x3) == 3 ? 1 : 0);
+ len += sprintf(&info[len], "%d\n\n",
+ (readl(EXYNOS_COMMON_STATUS(1)) & 0x3) == 3 ? 1 : 0);
+
+ return len;
+}
+
+static ssize_t bL_status_read(struct file *file, char __user *buf,
+ size_t len, loff_t *pos)
+{
+ size_t count = 0;
+ char info[100];
+
+ count = bL_check_status(info);
+ if (count < 0)
+ return -EINVAL;
+
+ return simple_read_from_buffer(buf, len, pos, info, count);
+}
+
+static const struct file_operations bL_status_fops = {
+ .read = bL_status_read,
+};
+
+static struct miscdevice bL_status_device = {
+ MISC_DYNAMIC_MINOR,
+ "bL_status",
+ &bL_status_fops
+};
+
+extern void exynos_power_up_setup(unsigned int affinity_level);
+
+static int __init exynos_mcpm_init(void)
+{
+ int ret = 0;
+
+ if (!cci_probed())
+ return -ENODEV;
+
+ if (!soc_is_exynos5420())
+ return 0;
+
+ /*
+ * To increase the stability of KFC reset we need to program
+ * the PMU SPARE3 register
+ */
+ __raw_writel(EXYNOS5420_SWRESET_KFC_SEL, S5P_PMU_SPARE3);
+
+ exynos_mcpm_usage_count_init();
+
+ ret = mcpm_platform_register(&exynos_power_ops);
+ if (!ret)
+ ret = mcpm_sync_init(exynos_power_up_setup);
+
+ pr_info("Exynos MCPM support installed\n");
+
+ /*
+ * Future entries into the kernel can now go
+ * through the cluster entry vectors.
+ */
+ __raw_writel(virt_to_phys(mcpm_entry_point),
+ REG_ENTRY_ADDR);
+
+ return ret;
+}
+
+early_initcall(exynos_mcpm_init);
+
+static int __init exynos_bl_status_init(void)
+{
+ int ret;
+
+ if (!soc_is_exynos5420())
+ return 0;
+
+ ret = misc_register(&bL_status_device);
+ if (ret)
+ pr_info("bl_status not available\n");
+ return 0;
+}
+
+late_initcall(exynos_bl_status_init);
diff --git a/arch/arm/mach-exynos/platsmp.c b/arch/arm/mach-exynos/platsmp.c
index 03e5e9f..4f14457 100644
--- a/arch/arm/mach-exynos/platsmp.c
+++ b/arch/arm/mach-exynos/platsmp.c
@@ -25,6 +25,7 @@
#include <asm/smp_plat.h>
#include <asm/smp_scu.h>
#include <asm/firmware.h>
+#include <asm/mcpm.h>
#include <plat/cpu.h>
@@ -226,6 +227,24 @@ static void __init exynos_smp_prepare_cpus(unsigned int max_cpus)
}
}
+bool __init exynos_smp_init(void)
+{
+#ifdef CONFIG_MCPM
+ /*
+ * The best way to detect a multi-cluster configuration at the moment
+ * is to look for the presence of a CCI in the system.
+ * Override the default exynos_smp_ops if so.
+ */
+ struct device_node *node;
+ node = of_find_compatible_node(NULL, NULL, "arm,cci-400");
+ if (node && of_device_is_available(node)) {
+ mcpm_smp_set_ops();
+ return true;
+ }
+#endif
+ return false;
+}
+
struct smp_operations exynos_smp_ops __initdata = {
.smp_init_cpus = exynos_smp_init_cpus,
.smp_prepare_cpus = exynos_smp_prepare_cpus,
diff --git a/arch/arm/mach-exynos/regs-pmu.h b/arch/arm/mach-exynos/regs-pmu.h
index cfbfc575..43fe7a0 100644
--- a/arch/arm/mach-exynos/regs-pmu.h
+++ b/arch/arm/mach-exynos/regs-pmu.h
@@ -38,6 +38,7 @@
#define S5P_INFORM5 S5P_PMUREG(0x0814)
#define S5P_INFORM6 S5P_PMUREG(0x0818)
#define S5P_INFORM7 S5P_PMUREG(0x081C)
+#define S5P_PMU_SPARE3 S5P_PMUREG(0x090C)
#define EXYNOS_IROM_DATA2 S5P_PMUREG(0x0988)
@@ -540,5 +541,6 @@
#define EXYNOS5420_KFC_USE_STANDBY_WFE3 (1 << 23)
#define DUR_WAIT_RESET 0xF
+#define EXYNOS5420_SWRESET_KFC_SEL 0x3
#endif /* __ASM_ARCH_REGS_PMU_H */
--
1.7.9.5
--
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