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author | Olof Johansson <olof@lixom.net> | 2014-05-19 23:29:46 -0700 |
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committer | Olof Johansson <olof@lixom.net> | 2014-05-19 23:29:46 -0700 |
commit | bf4348e622a798eda72c59f35772db93f72f6aef (patch) | |
tree | dff000d5f5ae2e53ff565eadc962e1b4d417479c | |
parent | fd46edb9f667e0373eefb0c93745fbde0c9e8161 (diff) | |
parent | f492b81777c93b33afe892b424e022022b5bc297 (diff) | |
download | op-kernel-dev-bf4348e622a798eda72c59f35772db93f72f6aef.zip op-kernel-dev-bf4348e622a798eda72c59f35772db93f72f6aef.tar.gz |
Merge tag 'renesas-soc-cleanup-for-v3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/soc
Merge "Renesas ARM Based SoC soc-cleanup Updates for v3.16" from Simon Horman:
r8a7791 (R-Car H2) SoC and its Koelsch board and,
r8a7740 (R-Mobile A1) SoC and its Armadillo800eva board
* Set CPU clock frequency from OF nodes
* tag 'renesas-soc-cleanup-for-v3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
ARM: shmobile: Set clock frequency in HZ from OF nodes
ARM: shmobile: Use shmobile_init_late() on r8a7740
ARM: shmobile: Remove unused r8a7791_init_early()
ARM: shmobile: Use r8a7791 DT CPU Frequency for Koelsch
ARM: shmobile: Use r8a7791 DT CPU Frequency in common case
ARM: shmobile: Remove unused r8a7740_init_delay()
ARM: shmobile: Use r8a7740 DT CPU Frequency for Armadillo DT Ref
ARM: shmobile: Use r8a7740 DT CPU Frequency in common case
ARM: shmobile: Add r8a7740 Maximum CPU Frequency to DTS
Signed-off-by: Olof Johansson <olof@lixom.net>
-rw-r--r-- | arch/arm/boot/dts/r8a7740.dtsi | 1 | ||||
-rw-r--r-- | arch/arm/mach-shmobile/board-armadillo800eva-reference.c | 2 | ||||
-rw-r--r-- | arch/arm/mach-shmobile/board-koelsch-reference.c | 2 | ||||
-rw-r--r-- | arch/arm/mach-shmobile/board-koelsch.c | 2 | ||||
-rw-r--r-- | arch/arm/mach-shmobile/include/mach/r8a7740.h | 1 | ||||
-rw-r--r-- | arch/arm/mach-shmobile/include/mach/r8a7791.h | 1 | ||||
-rw-r--r-- | arch/arm/mach-shmobile/setup-r8a7740.c | 8 | ||||
-rw-r--r-- | arch/arm/mach-shmobile/setup-r8a7791.c | 9 | ||||
-rw-r--r-- | arch/arm/mach-shmobile/timer.c | 23 |
9 files changed, 27 insertions, 22 deletions
diff --git a/arch/arm/boot/dts/r8a7740.dtsi b/arch/arm/boot/dts/r8a7740.dtsi index 2551e94..97a9545 100644 --- a/arch/arm/boot/dts/r8a7740.dtsi +++ b/arch/arm/boot/dts/r8a7740.dtsi @@ -22,6 +22,7 @@ compatible = "arm,cortex-a9"; device_type = "cpu"; reg = <0x0>; + clock-frequency = <800000000>; }; }; diff --git a/arch/arm/mach-shmobile/board-armadillo800eva-reference.c b/arch/arm/mach-shmobile/board-armadillo800eva-reference.c index 57d1a78..57d246e 100644 --- a/arch/arm/mach-shmobile/board-armadillo800eva-reference.c +++ b/arch/arm/mach-shmobile/board-armadillo800eva-reference.c @@ -187,7 +187,7 @@ static const char *eva_boards_compat_dt[] __initdata = { DT_MACHINE_START(ARMADILLO800EVA_DT, "armadillo800eva-reference") .map_io = r8a7740_map_io, - .init_early = r8a7740_init_delay, + .init_early = shmobile_init_delay, .init_irq = r8a7740_init_irq_of, .init_machine = eva_init, .init_late = shmobile_init_late, diff --git a/arch/arm/mach-shmobile/board-koelsch-reference.c b/arch/arm/mach-shmobile/board-koelsch-reference.c index a3fd302..ff33d9c 100644 --- a/arch/arm/mach-shmobile/board-koelsch-reference.c +++ b/arch/arm/mach-shmobile/board-koelsch-reference.c @@ -139,7 +139,7 @@ static const char * const koelsch_boards_compat_dt[] __initconst = { DT_MACHINE_START(KOELSCH_DT, "koelsch") .smp = smp_ops(r8a7791_smp_ops), - .init_early = r8a7791_init_early, + .init_early = shmobile_init_delay, .init_time = rcar_gen2_timer_init, .init_machine = koelsch_add_standard_devices, .init_late = shmobile_init_late, diff --git a/arch/arm/mach-shmobile/board-koelsch.c b/arch/arm/mach-shmobile/board-koelsch.c index 5a034ff..3cd8008 100644 --- a/arch/arm/mach-shmobile/board-koelsch.c +++ b/arch/arm/mach-shmobile/board-koelsch.c @@ -522,7 +522,7 @@ static const char * const koelsch_boards_compat_dt[] __initconst = { DT_MACHINE_START(KOELSCH_DT, "koelsch") .smp = smp_ops(r8a7791_smp_ops), - .init_early = r8a7791_init_early, + .init_early = shmobile_init_delay, .init_time = rcar_gen2_timer_init, .init_machine = koelsch_init, .init_late = shmobile_init_late, diff --git a/arch/arm/mach-shmobile/include/mach/r8a7740.h b/arch/arm/mach-shmobile/include/mach/r8a7740.h index d07932f..5e3c9ec 100644 --- a/arch/arm/mach-shmobile/include/mach/r8a7740.h +++ b/arch/arm/mach-shmobile/include/mach/r8a7740.h @@ -47,7 +47,6 @@ enum { }; extern void r8a7740_meram_workaround(void); -extern void r8a7740_init_delay(void); extern void r8a7740_init_irq_of(void); extern void r8a7740_map_io(void); extern void r8a7740_add_early_devices(void); diff --git a/arch/arm/mach-shmobile/include/mach/r8a7791.h b/arch/arm/mach-shmobile/include/mach/r8a7791.h index 200fa699..664274c 100644 --- a/arch/arm/mach-shmobile/include/mach/r8a7791.h +++ b/arch/arm/mach-shmobile/include/mach/r8a7791.h @@ -5,7 +5,6 @@ void r8a7791_add_standard_devices(void); void r8a7791_add_dt_devices(void); void r8a7791_clock_init(void); void r8a7791_pinmux_init(void); -void r8a7791_init_early(void); extern struct smp_operations r8a7791_smp_ops; #endif /* __ASM_R8A7791_H__ */ diff --git a/arch/arm/mach-shmobile/setup-r8a7740.c b/arch/arm/mach-shmobile/setup-r8a7740.c index 8f3c681..7bdc51c 100644 --- a/arch/arm/mach-shmobile/setup-r8a7740.c +++ b/arch/arm/mach-shmobile/setup-r8a7740.c @@ -887,11 +887,6 @@ void __init r8a7740_add_standard_devices_dt(void) of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); } -void __init r8a7740_init_delay(void) -{ - shmobile_setup_delay(800, 1, 3); /* Cortex-A9 @ 800MHz */ -}; - void __init r8a7740_init_irq_of(void) { void __iomem *intc_prio_base = ioremap_nocache(0xe6900010, 0x10); @@ -935,9 +930,10 @@ static const char *r8a7740_boards_compat_dt[] __initdata = { DT_MACHINE_START(R8A7740_DT, "Generic R8A7740 (Flattened Device Tree)") .map_io = r8a7740_map_io, - .init_early = r8a7740_init_delay, + .init_early = shmobile_init_delay, .init_irq = r8a7740_init_irq_of, .init_machine = r8a7740_generic_init, + .init_late = shmobile_init_late, .dt_compat = r8a7740_boards_compat_dt, MACHINE_END diff --git a/arch/arm/mach-shmobile/setup-r8a7791.c b/arch/arm/mach-shmobile/setup-r8a7791.c index a7e4966..949580a 100644 --- a/arch/arm/mach-shmobile/setup-r8a7791.c +++ b/arch/arm/mach-shmobile/setup-r8a7791.c @@ -210,13 +210,6 @@ void __init r8a7791_add_standard_devices(void) r8a7791_register_thermal(); } -void __init r8a7791_init_early(void) -{ -#ifndef CONFIG_ARM_ARCH_TIMER - shmobile_setup_delay(1500, 2, 4); /* Cortex-A15 @ 1500MHz */ -#endif -} - #ifdef CONFIG_USE_OF static const char *r8a7791_boards_compat_dt[] __initdata = { "renesas,r8a7791", @@ -225,7 +218,7 @@ static const char *r8a7791_boards_compat_dt[] __initdata = { DT_MACHINE_START(R8A7791_DT, "Generic R8A7791 (Flattened Device Tree)") .smp = smp_ops(r8a7791_smp_ops), - .init_early = r8a7791_init_early, + .init_early = shmobile_init_delay, .init_time = rcar_gen2_timer_init, .dt_compat = r8a7791_boards_compat_dt, MACHINE_END diff --git a/arch/arm/mach-shmobile/timer.c b/arch/arm/mach-shmobile/timer.c index ccecde9..68bc0b8 100644 --- a/arch/arm/mach-shmobile/timer.c +++ b/arch/arm/mach-shmobile/timer.c @@ -23,6 +23,23 @@ #include <linux/delay.h> #include <linux/of_address.h> +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_setup_delay(unsigned int max_cpu_core_mhz, unsigned int mult, unsigned int div) { @@ -58,12 +75,12 @@ void __init shmobile_init_delay(void) if (max_freq) { if (of_find_compatible_node(NULL, NULL, "arm,cortex-a8")) - shmobile_setup_delay(max_freq, 1, 3); + shmobile_setup_delay_hz(max_freq, 1, 3); else if (of_find_compatible_node(NULL, NULL, "arm,cortex-a9")) - shmobile_setup_delay(max_freq, 1, 3); + shmobile_setup_delay_hz(max_freq, 1, 3); else if (of_find_compatible_node(NULL, NULL, "arm,cortex-a15")) if (!IS_ENABLED(CONFIG_ARM_ARCH_TIMER)) - shmobile_setup_delay(max_freq, 2, 4); + shmobile_setup_delay_hz(max_freq, 2, 4); } } |