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authorLinus Torvalds <torvalds@linux-foundation.org>2015-06-26 21:34:35 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2015-06-26 21:34:35 +0300
commit4aa705b18bf17c4ff33ff7bbcd3f0c596443fa81 (patch)
tree3b166bff290d123ccaa88598ad2d45be67f5b358 /arch/arm/mach-zynq
parentc11d716218910c3aa2bac1bb641e6086ad649555 (diff)
parent2879e43f09122f8b3ef5456e3d7e48716b086e60 (diff)
downloadlinux-4aa705b18bf17c4ff33ff7bbcd3f0c596443fa81.tar.xz
Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC platform support updates from Kevin Hilman: "Our SoC branch usually contains expanded support for new SoCs and other core platform code. Some highlights from this round: - sunxi: SMP support for A23 SoC - socpga: big-endian support - pxa: conversion to common clock framework - bcm: SMP support for BCM63138 - imx: support new I.MX7D SoC - zte: basic support for ZX296702 SoC" * tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (134 commits) ARM: zx: Add basic defconfig support for ZX296702 ARM: dts: zx: add an initial zx296702 dts and doc clk: zx: add clock support to zx296702 dt-bindings: Add #defines for ZTE ZX296702 clocks ARM: socfpga: fix build error due to secondary_startup MAINTAINERS: ARM64: EXYNOS: Extend entry for ARM64 DTS ARM: ep93xx: simone: support for SPI-based MMC/SD cards MAINTAINERS: update Shawn's email to use kernel.org one ARM: socfpga: support suspend to ram ARM: socfpga: add CPU_METHOD_OF_DECLARE for Arria 10 ARM: socfpga: use CPU_METHOD_OF_DECLARE for socfpga_cyclone5 ARM: EXYNOS: register power domain driver from core_initcall ARM: EXYNOS: use PS_HOLD based poweroff for all supported SoCs ARM: SAMSUNG: Constify platform_device_id ARM: EXYNOS: Constify irq_domain_ops ARM: EXYNOS: add coupled cpuidle support for Exynos3250 ARM: EXYNOS: add exynos_get_boot_addr() helper ARM: EXYNOS: add exynos_set_boot_addr() helper ARM: EXYNOS: make exynos_core_restart() less verbose ARM: EXYNOS: fix exynos_boot_secondary() return value on timeout ...
Diffstat (limited to 'arch/arm/mach-zynq')
-rw-r--r--arch/arm/mach-zynq/common.c6
-rw-r--r--arch/arm/mach-zynq/common.h1
-rw-r--r--arch/arm/mach-zynq/slcr.c28
3 files changed, 19 insertions, 16 deletions
diff --git a/arch/arm/mach-zynq/common.c b/arch/arm/mach-zynq/common.c
index 58ef2a700414..616d5840fc2e 100644
--- a/arch/arm/mach-zynq/common.c
+++ b/arch/arm/mach-zynq/common.c
@@ -190,11 +190,6 @@ static void __init zynq_irq_init(void)
irqchip_init();
}
-static void zynq_system_reset(enum reboot_mode mode, const char *cmd)
-{
- zynq_slcr_system_reset();
-}
-
static const char * const zynq_dt_match[] = {
"xlnx,zynq-7000",
NULL
@@ -212,5 +207,4 @@ DT_MACHINE_START(XILINX_EP107, "Xilinx Zynq Platform")
.init_time = zynq_timer_init,
.dt_compat = zynq_dt_match,
.reserve = zynq_memory_init,
- .restart = zynq_system_reset,
MACHINE_END
diff --git a/arch/arm/mach-zynq/common.h b/arch/arm/mach-zynq/common.h
index 7038cae95ddc..79cda2e5fa4e 100644
--- a/arch/arm/mach-zynq/common.h
+++ b/arch/arm/mach-zynq/common.h
@@ -19,7 +19,6 @@
extern int zynq_slcr_init(void);
extern int zynq_early_slcr_init(void);
-extern void zynq_slcr_system_reset(void);
extern void zynq_slcr_cpu_stop(int cpu);
extern void zynq_slcr_cpu_start(int cpu);
extern bool zynq_slcr_cpu_state_read(int cpu);
diff --git a/arch/arm/mach-zynq/slcr.c b/arch/arm/mach-zynq/slcr.c
index c3c24fd8b306..26320ebf3493 100644
--- a/arch/arm/mach-zynq/slcr.c
+++ b/arch/arm/mach-zynq/slcr.c
@@ -15,6 +15,7 @@
*/
#include <linux/io.h>
+#include <linux/reboot.h>
#include <linux/mfd/syscon.h>
#include <linux/of_address.h>
#include <linux/regmap.h>
@@ -92,20 +93,21 @@ u32 zynq_slcr_get_device_id(void)
}
/**
- * zynq_slcr_system_reset - Reset the entire system.
+ * zynq_slcr_system_restart - Restart the entire system.
+ *
+ * @nb: Pointer to restart notifier block (unused)
+ * @action: Reboot mode (unused)
+ * @data: Restart handler private data (unused)
+ *
+ * Return: 0 always
*/
-void zynq_slcr_system_reset(void)
+static
+int zynq_slcr_system_restart(struct notifier_block *nb,
+ unsigned long action, void *data)
{
u32 reboot;
/*
- * Unlock the SLCR then reset the system.
- * Note that this seems to require raw i/o
- * functions or there's a lockup?
- */
- zynq_slcr_unlock();
-
- /*
* Clear 0x0F000000 bits of reboot status register to workaround
* the FSBL not loading the bitstream after soft-reboot
* This is a temporary solution until we know more.
@@ -113,8 +115,14 @@ void zynq_slcr_system_reset(void)
zynq_slcr_read(&reboot, SLCR_REBOOT_STATUS_OFFSET);
zynq_slcr_write(reboot & 0xF0FFFFFF, SLCR_REBOOT_STATUS_OFFSET);
zynq_slcr_write(1, SLCR_PS_RST_CTRL_OFFSET);
+ return 0;
}
+static struct notifier_block zynq_slcr_restart_nb = {
+ .notifier_call = zynq_slcr_system_restart,
+ .priority = 192,
+};
+
/**
* zynq_slcr_cpu_start - Start cpu
* @cpu: cpu number
@@ -219,6 +227,8 @@ int __init zynq_early_slcr_init(void)
/* unlock the SLCR so that registers can be changed */
zynq_slcr_unlock();
+ register_restart_handler(&zynq_slcr_restart_nb);
+
pr_info("%s mapped to %p\n", np->name, zynq_slcr_base);
of_node_put(np);