From: Arnd Bergmann <arnd@arndb.de>
To: Kukjin Kim <kgene@kernel.org>, Krzysztof Kozlowski <krzk@kernel.org>
Cc: linux-samsung-soc@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
linux-kernel@vger.kernel.org, Tomasz Figa <tomasz.figa@gmail.com>,
Russell King <linux@armlinux.org.uk>,
linux-arm-kernel@lists.infradead.org,
Marek Szyprowski <m.szyprowski@samsung.com>
Subject: [PATCH] ARM: exynos: only build mcpm support if used
Date: Wed, 19 Jun 2019 14:55:29 +0200 [thread overview]
Message-ID: <20190619125545.1087023-1-arnd@arndb.de> (raw)
We get a link error for configurations that enable an exynos
SoC that does not require mcpm, but then manually enable
mcpm anyway wihtout also turning on the arm-cci:
arch/arm/mach-exynos/mcpm-exynos.o: In function `exynos_pm_power_up_setup':
mcpm-exynos.c:(.text+0x8): undefined reference to `cci_enable_port_for_self'
Change it back to only build the code we actually need, by
introducing a CONFIG_EXYNOS_MCPM that serves the same purpose
as the older CONFIG_EXYNOS5420_MCPM.
Fixes: 2997520c2d4e ("ARM: exynos: Set MCPM as mandatory for Exynos542x/5800 SoCs")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
arch/arm/mach-exynos/Kconfig | 6 +++++-
arch/arm/mach-exynos/Makefile | 2 +-
arch/arm/mach-exynos/suspend.c | 6 +++---
3 files changed, 9 insertions(+), 5 deletions(-)
diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index 21ad78d79d8d..d7422233a130 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -107,7 +107,7 @@ config SOC_EXYNOS5420
bool "SAMSUNG EXYNOS5420"
default y
depends on ARCH_EXYNOS5
- select MCPM if SMP
+ select EXYNOS_MCPM if SMP
select ARM_CCI400_PORT_CTRL
select ARM_CPU_SUSPEND
@@ -116,6 +116,10 @@ config SOC_EXYNOS5800
default y
depends on SOC_EXYNOS5420
+config EXYNOS_MCPM
+ bool
+ select MCPM
+
config EXYNOS_CPU_SUSPEND
bool
select ARM_CPU_SUSPEND
diff --git a/arch/arm/mach-exynos/Makefile b/arch/arm/mach-exynos/Makefile
index 264dbaa89c3d..5abf3db23912 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_MCPM) += mcpm-exynos.o
+obj-$(CONFIG_EXYNOS_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 be122af0de8f..8b1e6ab8504f 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_MCPM)) {
+ if (IS_ENABLED(CONFIG_EXYNOS_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_MCPM))
+ if (IS_ENABLED(CONFIG_EXYNOS_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_MCPM))
+ if (IS_ENABLED(CONFIG_EXYNOS_MCPM))
WARN_ON(mcpm_cpu_powered_up());
if (IS_ENABLED(CONFIG_HW_PERF_EVENTS) && cluster != 0) {
--
2.20.0
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next reply other threads:[~2019-06-19 12:56 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-19 12:55 Arnd Bergmann [this message]
2019-06-21 18:12 ` [PATCH] ARM: exynos: only build mcpm support if used Krzysztof Kozlowski
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