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-rw-r--r--arch/arm/boot/dts/r8a7740.dtsi1
-rw-r--r--arch/arm/mach-shmobile/board-armadillo800eva-reference.c2
-rw-r--r--arch/arm/mach-shmobile/board-koelsch-reference.c2
-rw-r--r--arch/arm/mach-shmobile/board-koelsch.c2
-rw-r--r--arch/arm/mach-shmobile/include/mach/r8a7740.h1
-rw-r--r--arch/arm/mach-shmobile/include/mach/r8a7791.h1
-rw-r--r--arch/arm/mach-shmobile/setup-r8a7740.c8
-rw-r--r--arch/arm/mach-shmobile/setup-r8a7791.c9
-rw-r--r--arch/arm/mach-shmobile/timer.c23
9 files changed, 27 insertions, 22 deletions
diff --git a/arch/arm/boot/dts/r8a7740.dtsi b/arch/arm/boot/dts/r8a7740.dtsi
index 2551e9438d35..97a9545f5232 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 57d1a78367b6..57d246eb8813 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 a3fd30242bd8..ff33d9c4b658 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 5a034ff405d0..3cd8008d09dd 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 d07932f872b6..5e3c9ec06303 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 200fa699f730..664274cc4b64 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 8f3c68101d59..7bdc51c195c7 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 a7e4966f5e18..949580ae150a 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 ccecde9a3362..68bc0b82226d 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);
}
}
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-11-27 13:14:52 +0000