diff options
Diffstat (limited to 'arch/arm/mach-shmobile')
-rw-r--r-- | arch/arm/mach-shmobile/Makefile | 1 | ||||
-rw-r--r-- | arch/arm/mach-shmobile/common.h | 7 | ||||
-rw-r--r-- | arch/arm/mach-shmobile/cpufreq.c | 19 | ||||
-rw-r--r-- | arch/arm/mach-shmobile/timer.c | 56 |
4 files changed, 19 insertions, 64 deletions
diff --git a/arch/arm/mach-shmobile/Makefile b/arch/arm/mach-shmobile/Makefile index ebb909c55b85..fc95f7bd2dd9 100644 --- a/arch/arm/mach-shmobile/Makefile +++ b/arch/arm/mach-shmobile/Makefile @@ -38,7 +38,6 @@ smp-$(CONFIG_ARCH_EMEV2) += smp-emev2.o headsmp-scu.o platsmp-scu.o # PM objects obj-$(CONFIG_SUSPEND) += suspend.o -obj-$(CONFIG_CPU_FREQ) += cpufreq.o obj-$(CONFIG_PM_RMOBILE) += pm-rmobile.o obj-$(CONFIG_ARCH_RCAR_GEN2) += pm-rcar-gen2.o diff --git a/arch/arm/mach-shmobile/common.h b/arch/arm/mach-shmobile/common.h index 5464b7a75e30..3b562d87826d 100644 --- a/arch/arm/mach-shmobile/common.h +++ b/arch/arm/mach-shmobile/common.h @@ -25,16 +25,9 @@ static inline int shmobile_suspend_init(void) { return 0; } static inline void shmobile_smp_apmu_suspend_init(void) { } #endif -#ifdef CONFIG_CPU_FREQ -int shmobile_cpufreq_init(void); -#else -static inline int shmobile_cpufreq_init(void) { return 0; } -#endif - static inline void __init shmobile_init_late(void) { shmobile_suspend_init(); - shmobile_cpufreq_init(); } #endif /* __ARCH_MACH_COMMON_H */ diff --git a/arch/arm/mach-shmobile/cpufreq.c b/arch/arm/mach-shmobile/cpufreq.c deleted file mode 100644 index 634d701c56a7..000000000000 --- a/arch/arm/mach-shmobile/cpufreq.c +++ /dev/null @@ -1,19 +0,0 @@ -/* - * CPUFreq support code for SH-Mobile ARM - * - * Copyright (C) 2014 Gaku Inami - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - */ - -#include <linux/platform_device.h> - -#include "common.h" - -int __init shmobile_cpufreq_init(void) -{ - platform_device_register_simple("cpufreq-dt", -1, NULL, 0); - return 0; -} diff --git a/arch/arm/mach-shmobile/timer.c b/arch/arm/mach-shmobile/timer.c index ad008e4b0c49..6196a6380385 100644 --- a/arch/arm/mach-shmobile/timer.c +++ b/arch/arm/mach-shmobile/timer.c @@ -20,29 +20,9 @@ #include "common.h" -static void __init shmobile_setup_delay_hz(unsigned int max_cpu_core_hz, - unsigned int mult, unsigned int div) -{ - /* calculate a worst-case loops-per-jiffy value - * based on maximum cpu core hz setting and the - * __delay() implementation in arch/arm/lib/delay.S - * - * this will result in a longer delay than expected - * when the cpu core runs on lower frequencies. - */ - - unsigned int value = HZ * div / mult; - - if (!preset_lpj) - preset_lpj = max_cpu_core_hz / value; -} - void __init shmobile_init_delay(void) { struct device_node *np, *cpus; - bool is_a7_a8_a9 = false; - bool is_a15 = false; - bool has_arch_timer = false; u32 max_freq = 0; cpus = of_find_node_by_path("/cpus"); @@ -52,19 +32,16 @@ void __init shmobile_init_delay(void) for_each_child_of_node(cpus, np) { u32 freq; + if (IS_ENABLED(CONFIG_ARM_ARCH_TIMER) && + (of_device_is_compatible(np, "arm,cortex-a7") || + of_device_is_compatible(np, "arm,cortex-a15"))) { + of_node_put(np); + of_node_put(cpus); + return; + } + if (!of_property_read_u32(np, "clock-frequency", &freq)) max_freq = max(max_freq, freq); - - if (of_device_is_compatible(np, "arm,cortex-a8") || - of_device_is_compatible(np, "arm,cortex-a9")) { - is_a7_a8_a9 = true; - } else if (of_device_is_compatible(np, "arm,cortex-a7")) { - is_a7_a8_a9 = true; - has_arch_timer = true; - } else if (of_device_is_compatible(np, "arm,cortex-a15")) { - is_a15 = true; - has_arch_timer = true; - } } of_node_put(cpus); @@ -72,10 +49,15 @@ void __init shmobile_init_delay(void) if (!max_freq) return; - if (!has_arch_timer || !IS_ENABLED(CONFIG_ARM_ARCH_TIMER)) { - if (is_a7_a8_a9) - shmobile_setup_delay_hz(max_freq, 1, 3); - else if (is_a15) - shmobile_setup_delay_hz(max_freq, 2, 4); - } + /* + * Calculate a worst-case loops-per-jiffy value + * based on maximum cpu core hz setting and the + * __delay() implementation in arch/arm/lib/delay.S. + * + * This will result in a longer delay than expected + * when the cpu core runs on lower frequencies. + */ + + if (!preset_lpj) + preset_lpj = max_freq / HZ; } |