Merge tag 'renesas-soc-cleanup-for-v3.16' of git://git.kernel.org/pub/scm/linux/kerne...

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>

diff --git a/arch/arm/boot/dts/r8a7740.dtsi b/arch/arm/boot/dts/r8a7740.dtsi
index 2551e9438d358a55e8e4edb7c494ea231ee46810..97a9545f5232c01d900b13f62f7ba3fb2a2898be 100644 (file)
--- 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 57d1a78367b6aa17accfddc013132b8328d9b5f5..57d246eb8813b111258730762e0ccfa227d993d0 100644 (file)
--- 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 a3fd30242bd87d2a8c77f2c6ade2a3c96259e039..ff33d9c4b65865f240519438730753a1116d3cb9 100644 (file)
--- 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 5a034ff405d001c82e9c79872296719691f4a378..3cd8008d09dda9d6267abc6d85991af1ca9438a0 100644 (file)
--- 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 d07932f872b6770273a5b227231c60a5cbf5a06f..5e3c9ec06303e1f5de7c8af85f4a6be8538590ae 100644 (file)
--- 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 200fa699f730e81fe8e02336ee69e07cc20e6898..664274cc4b64f17e3352f74f32623e044370ffde 100644 (file)
--- 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 8f3c68101d59d7f3423e59ee98eb361e73b6a856..7bdc51c195c759d61a1f848c8a9be9733941376f 100644 (file)
--- 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 a7e4966f5e189e4e6ef25fc0153723953bcfd073..949580ae150ae47acbd04665af979b2dc15fdbd6 100644 (file)
--- 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 ccecde9a3362e457e92d37d16facaae1993ff080..68bc0b82226d18f3af3448010d2e3cc653420972 100644 (file)
--- 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);
        }
 }