diff options
Diffstat (limited to 'arch/arm/mach-hisi/hotplug.c')
| -rw-r--r-- | arch/arm/mach-hisi/hotplug.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/arm/mach-hisi/hotplug.c b/arch/arm/mach-hisi/hotplug.c index 84e6919f68c7..a129aae72602 100644 --- a/arch/arm/mach-hisi/hotplug.c +++ b/arch/arm/mach-hisi/hotplug.c @@ -65,6 +65,9 @@ #define PMC0_CPU1_PMC_ENABLE (1 << 7) #define PMC0_CPU1_POWERDOWN (1 << 3) +#define HIP01_PERI9 0x50 +#define PERI9_CPU1_RESET (1 << 1) + enum { HI3620_CTRL, ERROR_CTRL, @@ -209,6 +212,34 @@ void hix5hd2_set_cpu(int cpu, bool enable) } } +void hip01_set_cpu(int cpu, bool enable) +{ + unsigned int temp; + struct device_node *np; + + if (!ctrl_base) { + np = of_find_compatible_node(NULL, NULL, "hisilicon,hip01-sysctrl"); + if (np) + ctrl_base = of_iomap(np, 0); + else + BUG(); + } + + if (enable) { + /* reset on CPU1 */ + temp = readl_relaxed(ctrl_base + HIP01_PERI9); + temp |= PERI9_CPU1_RESET; + writel_relaxed(temp, ctrl_base + HIP01_PERI9); + + udelay(50); + + /* unreset on CPU1 */ + temp = readl_relaxed(ctrl_base + HIP01_PERI9); + temp &= ~PERI9_CPU1_RESET; + writel_relaxed(temp, ctrl_base + HIP01_PERI9); + } +} + static inline void cpu_enter_lowpower(void) { unsigned int v; |