[v4] ARM: exynos: Set MCPM as mandatory for Exynos542x/5800 SoCs

Message ID 20190409095602.31846-1-m.szyprowski@samsung.com
State New
Headers show
Series
  • [v4] ARM: exynos: Set MCPM as mandatory for Exynos542x/5800 SoCs
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Commit Message

Marek Szyprowski April 9, 2019, 9:56 a.m.
Support for Exynos5420/5422/5800 SoCs requires MCPM to properly boot all
CPU cores on all currectly supported platforms: Peach Pit (Exynos5420),
Odroid XU3/XU3lite/XU4/HC1 (Exynos5422) and Peach Pi (Exynos5800).
Without it some CPU cores fail to come online. Remove then the ability to
disable MCPM and make it mandatory when Exynos542x/5800 support is
enabled.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>

---
v4: fixed build if !SMP (as suggested by Olof)
v3: remove CONFIG_EXYNOS5420_MCPM symbol from defconfigs too
v2: rebased on top of the current exynos-next
---
 arch/arm/configs/exynos_defconfig   |  1 -
 arch/arm/configs/multi_v7_defconfig |  1 -
 arch/arm/mach-exynos/Kconfig        | 12 +++---------
 arch/arm/mach-exynos/Makefile       |  2 +-
 arch/arm/mach-exynos/suspend.c      |  6 +++---
 5 files changed, 7 insertions(+), 15 deletions(-)

-- 
2.17.1

Comments

Krzysztof Kozlowski April 10, 2019, 4:12 p.m. | #1
On Tue, Apr 09, 2019 at 11:56:02AM +0200, Marek Szyprowski wrote:
> Support for Exynos5420/5422/5800 SoCs requires MCPM to properly boot all

> CPU cores on all currectly supported platforms: Peach Pit (Exynos5420),

> Odroid XU3/XU3lite/XU4/HC1 (Exynos5422) and Peach Pi (Exynos5800).

> Without it some CPU cores fail to come online. Remove then the ability to

> disable MCPM and make it mandatory when Exynos542x/5800 support is

> enabled.

> 

> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>

> ---

> v4: fixed build if !SMP (as suggested by Olof)

> v3: remove CONFIG_EXYNOS5420_MCPM symbol from defconfigs too

> v2: rebased on top of the current exynos-next


Thanks, applied.

Best regards,
Krzysztof

Patch

diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig
index d635edfb6ff2..c95c54284da2 100644
--- a/arch/arm/configs/exynos_defconfig
+++ b/arch/arm/configs/exynos_defconfig
@@ -9,7 +9,6 @@  CONFIG_MODULE_UNLOAD=y
 CONFIG_PARTITION_ADVANCED=y
 CONFIG_ARCH_EXYNOS=y
 CONFIG_ARCH_EXYNOS3=y
-CONFIG_EXYNOS5420_MCPM=y
 CONFIG_SMP=y
 CONFIG_BIG_LITTLE=y
 CONFIG_NR_CPUS=8
diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig
index f2e8eb66f501..78b077444f7a 100644
--- a/arch/arm/configs/multi_v7_defconfig
+++ b/arch/arm/configs/multi_v7_defconfig
@@ -33,7 +33,6 @@  CONFIG_MACH_BERLIN_BG2CD=y
 CONFIG_MACH_BERLIN_BG2Q=y
 CONFIG_ARCH_DIGICOLOR=y
 CONFIG_ARCH_EXYNOS=y
-CONFIG_EXYNOS5420_MCPM=y
 CONFIG_ARCH_HIGHBANK=y
 CONFIG_ARCH_HISI=y
 CONFIG_ARCH_HI3xxx=y
diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index b40963cf91c7..1c518b8ee520 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -106,21 +106,15 @@  config SOC_EXYNOS5420
 	bool "SAMSUNG EXYNOS5420"
 	default y
 	depends on ARCH_EXYNOS5
+	select MCPM if SMP
+	select ARM_CCI400_PORT_CTRL
+	select ARM_CPU_SUSPEND
 
 config SOC_EXYNOS5800
 	bool "SAMSUNG EXYNOS5800"
 	default y
 	depends on SOC_EXYNOS5420
 
-config EXYNOS5420_MCPM
-	bool "Exynos5420 Multi-Cluster PM support"
-	depends on MCPM && SOC_EXYNOS5420
-	select ARM_CCI400_PORT_CTRL
-	select ARM_CPU_SUSPEND
-	help
-	  This is needed to provide CPU and cluster power management
-	  on Exynos5420 implementing big.LITTLE.
-
 config EXYNOS_CPU_SUSPEND
 	bool
 	select ARM_CPU_SUSPEND
diff --git a/arch/arm/mach-exynos/Makefile b/arch/arm/mach-exynos/Makefile
index cd00c82a1add..264dbaa89c3d 100644
--- a/arch/arm/mach-exynos/Makefile
+++ b/arch/arm/mach-exynos/Makefile
@@ -18,5 +18,5 @@  plus_sec := $(call as-instr,.arch_extension sec,+sec)
 AFLAGS_exynos-smc.o		:=-Wa,-march=armv7-a$(plus_sec)
 AFLAGS_sleep.o			:=-Wa,-march=armv7-a$(plus_sec)
 
-obj-$(CONFIG_EXYNOS5420_MCPM)	+= mcpm-exynos.o
+obj-$(CONFIG_MCPM)		+= mcpm-exynos.o
 CFLAGS_mcpm-exynos.o		+= -march=armv7-a
diff --git a/arch/arm/mach-exynos/suspend.c b/arch/arm/mach-exynos/suspend.c
index 64a57e703fc2..be122af0de8f 100644
--- a/arch/arm/mach-exynos/suspend.c
+++ b/arch/arm/mach-exynos/suspend.c
@@ -268,7 +268,7 @@  static int exynos5420_cpu_suspend(unsigned long arg)
 	unsigned int cluster = MPIDR_AFFINITY_LEVEL(mpidr, 1);
 	unsigned int cpu = MPIDR_AFFINITY_LEVEL(mpidr, 0);
 
-	if (IS_ENABLED(CONFIG_EXYNOS5420_MCPM)) {
+	if (IS_ENABLED(CONFIG_MCPM)) {
 		mcpm_set_entry_vector(cpu, cluster, exynos_cpu_resume);
 		mcpm_cpu_suspend();
 	}
@@ -351,7 +351,7 @@  static void exynos5420_pm_prepare(void)
 	exynos_pm_enter_sleep_mode();
 
 	/* ensure at least INFORM0 has the resume address */
-	if (IS_ENABLED(CONFIG_EXYNOS5420_MCPM))
+	if (IS_ENABLED(CONFIG_MCPM))
 		pmu_raw_writel(__pa_symbol(mcpm_entry_point), S5P_INFORM0);
 
 	tmp = pmu_raw_readl(EXYNOS_L2_OPTION(0));
@@ -455,7 +455,7 @@  static void exynos5420_prepare_pm_resume(void)
 	mpidr = read_cpuid_mpidr();
 	cluster = MPIDR_AFFINITY_LEVEL(mpidr, 1);
 
-	if (IS_ENABLED(CONFIG_EXYNOS5420_MCPM))
+	if (IS_ENABLED(CONFIG_MCPM))
 		WARN_ON(mcpm_cpu_powered_up());
 
 	if (IS_ENABLED(CONFIG_HW_PERF_EVENTS) && cluster != 0) {