diff options
Diffstat (limited to 'arch/arm/mach-rockchip')
| -rw-r--r-- | arch/arm/mach-rockchip/platsmp.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/mach-rockchip/platsmp.c b/arch/arm/mach-rockchip/platsmp.c index 4c36fbf99afb..57b53b32e103 100644 --- a/arch/arm/mach-rockchip/platsmp.c +++ b/arch/arm/mach-rockchip/platsmp.c @@ -155,6 +155,19 @@ static int __init rockchip_smp_prepare_pmu(void) struct device_node *node; void __iomem *pmu_base; + /* + * This function is only called via smp_ops->smp_prepare_cpu(). + * That only happens if a "/cpus" device tree node exists + * and has an "enable-method" property that selects the SMP + * operations defined herein. + */ + node = of_find_node_by_path("/cpus"); + + pmu = syscon_regmap_lookup_by_phandle(node, "rockchip,pmu"); + of_node_put(node); + if (!IS_ERR(pmu)) + return 0; + pmu = syscon_regmap_lookup_by_compatible("rockchip,rk3066-pmu"); if (!IS_ERR(pmu)) return 0; |