[PATCH 1/9] ARM: shmobile: Add r8a7740 Maximum CPU Frequency to DTS

[PATCH 1/9] ARM: shmobile: Add r8a7740 Maximum CPU Frequency to DTS

[Simon Horman]

From: Magnus Damm <damm+renesas@opensource.se>

Add 800 MHz to the r8a7740 DTS to describe the maximum CPU frequency.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Tested-by: Geert Uytterhoeven <geert@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 arch/arm/boot/dts/r8a7740.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/r8a7740.dtsi b/arch/arm/boot/dts/r8a7740.dtsi
index 8280884..67c4b8b 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>;
 		};
 	};
 
-- 
1.8.5.2

[PATCH 2/9] ARM: shmobile: Use r8a7740 DT CPU Frequency in common case

[Simon Horman]

From: Magnus Damm <damm+renesas@opensource.se>

Convert the common C-code-less r8a7740 DT board support
to use shmobile_init_delay() to be able to migrate away
from per-SoC delay setup functions.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Tested-by: Geert Uytterhoeven <geert@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 arch/arm/mach-shmobile/setup-r8a7740.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mach-shmobile/setup-r8a7740.c b/arch/arm/mach-shmobile/setup-r8a7740.c
index 8f3c681..d1ce3ca 100644
--- a/arch/arm/mach-shmobile/setup-r8a7740.c
+++ b/arch/arm/mach-shmobile/setup-r8a7740.c
@@ -935,7 +935,7 @@ 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,
 	.dt_compat	= r8a7740_boards_compat_dt,
-- 
1.8.5.2

[PATCH 3/9] ARM: shmobile: Use r8a7740 DT CPU Frequency for Armadillo DT Ref

[Simon Horman]

From: Magnus Damm <damm+renesas@opensource.se>

Convert the Armadillo r8a7740 DT reference board support
to use shmobile_init_delay() to be able to migrate away
from per-SoC delay setup functions.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Tested-by: Geert Uytterhoeven <geert@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 arch/arm/mach-shmobile/board-armadillo800eva-reference.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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,
-- 
1.8.5.2

[PATCH 4/9] ARM: shmobile: Remove unused r8a7740_init_delay()

[Simon Horman]

From: Magnus Damm <damm+renesas@opensource.se>

Remove the now unused r8a7740_init_delay() function.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Tested-by: Geert Uytterhoeven <geert@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 arch/arm/mach-shmobile/include/mach/r8a7740.h | 1 -
 arch/arm/mach-shmobile/setup-r8a7740.c        | 5 -----
 2 files changed, 6 deletions(-)

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/setup-r8a7740.c b/arch/arm/mach-shmobile/setup-r8a7740.c
index d1ce3ca..eaec043 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);
-- 
1.8.5.2

[GIT PULL] Renesas ARM Based SoC Cleanups v3.16

[Simon Horman]

Hi Olof, Hi Kevin, Hi Arnd,

Please consider these Renesas ARM based SoC cleanups v3.16.

This pull request is based on Renesas ARM Based SoC Updates for v3.16,
tagged as renesas-soc-for-v3.16, which you have already pulled.


This series includes dependencies that do not fit easily into the usual
inter-branch dependencies and as such I have grouped them together in a
single branch.


The following changes since commit e35db38d66d1e4007cfc1bb90a05e11b4aaee2a8:

  ARM: shmobile: r8a7778/bockw: Move "select RENESAS_INTC_IRQPIN" under SoC (2014-04-14 11:28:43 +0900)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas.git tags/renesas-soc-cleanup-for-v3.16

for you to fetch changes up to f492b81777c93b33afe892b424e022022b5bc297:

  ARM: shmobile: Set clock frequency in HZ from OF nodes (2014-05-14 14:02:21 +0900)

----------------------------------------------------------------
Renesas ARM Based SoC soc-cleanup Updates for v3.16

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

----------------------------------------------------------------
Magnus Damm (8):
      ARM: shmobile: Add r8a7740 Maximum CPU Frequency to DTS
      ARM: shmobile: Use r8a7740 DT CPU Frequency in common case
      ARM: shmobile: Use r8a7740 DT CPU Frequency for Armadillo DT Ref
      ARM: shmobile: Remove unused r8a7740_init_delay()
      ARM: shmobile: Use r8a7791 DT CPU Frequency in common case
      ARM: shmobile: Use r8a7791 DT CPU Frequency for Koelsch
      ARM: shmobile: Remove unused r8a7791_init_early()
      ARM: shmobile: Use shmobile_init_late() on r8a7740

Simon Horman (1):
      ARM: shmobile: Set clock frequency in HZ from OF nodes

 arch/arm/boot/dts/r8a7740.dtsi                     |  1 +
 .../board-armadillo800eva-reference.c              |  2 +-
 arch/arm/mach-shmobile/board-koelsch-reference.c   |  2 +-
 arch/arm/mach-shmobile/board-koelsch.c             |  2 +-
 arch/arm/mach-shmobile/include/mach/r8a7740.h      |  1 -
 arch/arm/mach-shmobile/include/mach/r8a7791.h      |  1 -
 arch/arm/mach-shmobile/setup-r8a7740.c             |  8 ++------
 arch/arm/mach-shmobile/setup-r8a7791.c             |  9 +--------
 arch/arm/mach-shmobile/timer.c                     | 23 +++++++++++++++++++---
 9 files changed, 27 insertions(+), 22 deletions(-)

[PATCH 5/9] ARM: shmobile: Use r8a7791 DT CPU Frequency in common case

[Simon Horman]

From: Magnus Damm <damm+renesas@opensource.se>

Convert the common C-code-less r8a7791 DT board support
to use shmobile_init_delay() to be able to migrate away
from per-SoC delay setup functions.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 arch/arm/mach-shmobile/setup-r8a7791.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mach-shmobile/setup-r8a7791.c b/arch/arm/mach-shmobile/setup-r8a7791.c
index a7e4966..2c84e74 100644
--- a/arch/arm/mach-shmobile/setup-r8a7791.c
+++ b/arch/arm/mach-shmobile/setup-r8a7791.c
@@ -225,7 +225,7 @@ 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
-- 
1.8.5.2

[PATCH 6/9] ARM: shmobile: Use r8a7791 DT CPU Frequency for Koelsch

[Simon Horman]

From: Magnus Damm <damm+renesas@opensource.se>

Convert the Koelsch board support to use shmobile_init_delay()
to be able to migrate away from per-SoC delay setup functions.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 arch/arm/mach-shmobile/board-koelsch-reference.c | 2 +-
 arch/arm/mach-shmobile/board-koelsch.c           | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

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,
-- 
1.8.5.2

[PATCH 7/9] ARM: shmobile: Remove unused r8a7791_init_early()

[Simon Horman]

From: Magnus Damm <damm+renesas@opensource.se>

Remove the now unused r8a7791_init_early() function.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 arch/arm/mach-shmobile/include/mach/r8a7791.h | 1 -
 arch/arm/mach-shmobile/setup-r8a7791.c        | 7 -------
 2 files changed, 8 deletions(-)

diff --git a/arch/arm/mach-shmobile/include/mach/r8a7791.h b/arch/arm/mach-shmobile/include/mach/r8a7791.h
index 200fa69..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-r8a7791.c b/arch/arm/mach-shmobile/setup-r8a7791.c
index 2c84e74..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",
-- 
1.8.5.2

[PATCH 8/9] ARM: shmobile: Use shmobile_init_late() on r8a7740

[Simon Horman]

From: Magnus Damm <damm+renesas@opensource.se>

Hook up ->init_late for r8a7740 to initialize Suspend-to-RAM
and CPUIdle in case of C-code less board support for r8a7740.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 arch/arm/mach-shmobile/setup-r8a7740.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-shmobile/setup-r8a7740.c b/arch/arm/mach-shmobile/setup-r8a7740.c
index eaec043..7bdc51c 100644
--- a/arch/arm/mach-shmobile/setup-r8a7740.c
+++ b/arch/arm/mach-shmobile/setup-r8a7740.c
@@ -933,6 +933,7 @@ DT_MACHINE_START(R8A7740_DT, "Generic R8A7740 (Flattened Device Tree)")
 	.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
 
-- 
1.8.5.2

[PATCH 9/9] ARM: shmobile: Set clock frequency in HZ from OF nodes

[Simon Horman]

shmobile_init_delay() looks for OF "clock-frequency" to determine
the delay which is set by calling shmobile_setup_delay().

Unfortunately this seems to be incorrect in detail as
"clock-frequency" node values are in HZ whereas the frequency
argument to shmobile_setup_delay() is in MHz.

Provide a variant of shmobile_setup_delay() that accepts HZ to
correct this problem.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 arch/arm/mach-shmobile/timer.c | 23 ++++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

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);
 	}
 }
 
-- 
1.8.5.2

[GIT PULL] Renesas ARM Based SoC Cleanups v3.16

[Olof Johansson]

On Fri, May 16, 2014 at 09:58:46AM +0900, Simon Horman wrote:
> Hi Olof, Hi Kevin, Hi Arnd,
> 
> Please consider these Renesas ARM based SoC cleanups v3.16.
> 
> This pull request is based on Renesas ARM Based SoC Updates for v3.16,
> tagged as renesas-soc-for-v3.16, which you have already pulled.
> 
> 
> This series includes dependencies that do not fit easily into the usual
> inter-branch dependencies and as such I have grouped them together in a
> single branch.
> 
> 
> The following changes since commit e35db38d66d1e4007cfc1bb90a05e11b4aaee2a8:
> 
>   ARM: shmobile: r8a7778/bockw: Move "select RENESAS_INTC_IRQPIN" under SoC (2014-04-14 11:28:43 +0900)
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas.git tags/renesas-soc-cleanup-for-v3.16
> 
> for you to fetch changes up to f492b81777c93b33afe892b424e022022b5bc297:
> 
>   ARM: shmobile: Set clock frequency in HZ from OF nodes (2014-05-14 14:02:21 +0900)

Merged, thanks.


-Olof