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Message-Id: <20230416133422.1949-4-aweber.kernel@gmail.com>
Date: Sun, 16 Apr 2023 15:34:13 +0200
From: Artur Weber <aweber.kernel@...il.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc: Alim Akhtar <alim.akhtar@...sung.com>,
Rob Herring <robh+dt@...nel.org>,
Sylwester Nawrocki <s.nawrocki@...sung.com>,
Tomasz Figa <tomasz.figa@...il.com>,
Chanwoo Choi <cw00.choi@...sung.com>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>, Arnd Bergmann <arnd@...db.de>,
Olof Johansson <olof@...om.net>, soc@...nel.org,
Russell King <linux@...linux.org.uk>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
Kukjin Kim <kgene@...nel.org>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Vinod Koul <vkoul@...nel.org>,
Kishon Vijay Abraham I <kishon@...nel.org>,
linux-arm-kernel@...ts.infradead.org,
linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
linux-pm@...r.kernel.org, linux-media@...r.kernel.org,
linux-phy@...ts.infradead.org,
~postmarketos/upstreaming@...ts.sr.ht,
Artur Weber <aweber.kernel@...il.com>
Subject: [PATCH v2 03/12] ARM: exynos: Re-introduce Exynos4212 support
The platform was originally dropped in commit bca9085e0ae9 ("ARM:
dts: exynos: remove Exynos4212 support (dead code)"), as there were
no boards using it.
We will be adding a device that uses it, so add it back.
This effectively reverts commit 9e43eca3c874 ("ARM: EXYNOS: Remove
Exynos4212 related dead code").
Signed-off-by: Artur Weber <aweber.kernel@...il.com>
---
arch/arm/mach-exynos/Kconfig | 5 +++++
arch/arm/mach-exynos/common.h | 8 ++++++++
arch/arm/mach-exynos/exynos.c | 2 ++
arch/arm/mach-exynos/firmware.c | 8 +++++++-
arch/arm/mach-exynos/pm.c | 2 +-
arch/arm/mach-exynos/suspend.c | 4 ++++
6 files changed, 27 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index 4d3b40e4049a..b3d5df5225fe 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -78,6 +78,11 @@ config CPU_EXYNOS4210
default y
depends on ARCH_EXYNOS4
+config SOC_EXYNOS4212
+ bool "Samsung Exynos4212"
+ default y
+ depends on ARCH_EXYNOS4
+
config SOC_EXYNOS4412
bool "Samsung Exynos4412"
default y
diff --git a/arch/arm/mach-exynos/common.h b/arch/arm/mach-exynos/common.h
index 29eb075b24a4..c9e85d33c309 100644
--- a/arch/arm/mach-exynos/common.h
+++ b/arch/arm/mach-exynos/common.h
@@ -15,6 +15,7 @@
#define EXYNOS3_SOC_MASK 0xFFFFF000
#define EXYNOS4210_CPU_ID 0x43210000
+#define EXYNOS4212_CPU_ID 0x43220000
#define EXYNOS4412_CPU_ID 0xE4412200
#define EXYNOS4_CPU_MASK 0xFFFE0000
@@ -34,6 +35,7 @@ static inline int is_samsung_##name(void) \
IS_SAMSUNG_CPU(exynos3250, EXYNOS3250_SOC_ID, EXYNOS3_SOC_MASK)
IS_SAMSUNG_CPU(exynos4210, EXYNOS4210_CPU_ID, EXYNOS4_CPU_MASK)
+IS_SAMSUNG_CPU(exynos4212, EXYNOS4212_CPU_ID, EXYNOS4_CPU_MASK)
IS_SAMSUNG_CPU(exynos4412, EXYNOS4412_CPU_ID, EXYNOS4_CPU_MASK)
IS_SAMSUNG_CPU(exynos5250, EXYNOS5250_SOC_ID, EXYNOS5_SOC_MASK)
IS_SAMSUNG_CPU(exynos5410, EXYNOS5410_SOC_ID, EXYNOS5_SOC_MASK)
@@ -52,6 +54,12 @@ IS_SAMSUNG_CPU(exynos5800, EXYNOS5800_SOC_ID, EXYNOS5_SOC_MASK)
# define soc_is_exynos4210() 0
#endif
+#if defined(CONFIG_SOC_EXYNOS4212)
+# define soc_is_exynos4212() is_samsung_exynos4212()
+#else
+# define soc_is_exynos4212() 0
+#endif
+
#if defined(CONFIG_SOC_EXYNOS4412)
# define soc_is_exynos4412() is_samsung_exynos4412()
#else
diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c
index 51a247ca4da8..5671621f1661 100644
--- a/arch/arm/mach-exynos/exynos.c
+++ b/arch/arm/mach-exynos/exynos.c
@@ -178,6 +178,7 @@ static void __init exynos_dt_machine_init(void)
exynos_cpuidle.dev.platform_data = &cpuidle_coupled_exynos_data;
#endif
if (of_machine_is_compatible("samsung,exynos4210") ||
+ of_machine_is_compatible("samsung,exynos4212") ||
(of_machine_is_compatible("samsung,exynos4412") &&
(of_machine_is_compatible("samsung,trats2") ||
of_machine_is_compatible("samsung,midas") ||
@@ -192,6 +193,7 @@ static char const *const exynos_dt_compat[] __initconst = {
"samsung,exynos3250",
"samsung,exynos4",
"samsung,exynos4210",
+ "samsung,exynos4212",
"samsung,exynos4412",
"samsung,exynos5",
"samsung,exynos5250",
diff --git a/arch/arm/mach-exynos/firmware.c b/arch/arm/mach-exynos/firmware.c
index 2da5b60b59e2..110c8064ee64 100644
--- a/arch/arm/mach-exynos/firmware.c
+++ b/arch/arm/mach-exynos/firmware.c
@@ -63,12 +63,18 @@ static int exynos_cpu_boot(int cpu)
*
* On Exynos5 devices the call is ignored by trustzone firmware.
*/
- if (!soc_is_exynos4210() && !soc_is_exynos4412())
+ if (!soc_is_exynos4210() && !soc_is_exynos4412() &&
+ !soc_is_exynos4212())
return 0;
/*
* The second parameter of SMC_CMD_CPU1BOOT command means CPU id.
+ * But, Exynos4212 has only one secondary CPU so second parameter
+ * isn't used for informing secure firmware about CPU id.
*/
+ if (soc_is_exynos4212())
+ cpu = 0;
+
exynos_smc(SMC_CMD_CPU1BOOT, cpu, 0, 0);
return 0;
}
diff --git a/arch/arm/mach-exynos/pm.c b/arch/arm/mach-exynos/pm.c
index 30f4e55bf39e..9b6db04e4e34 100644
--- a/arch/arm/mach-exynos/pm.c
+++ b/arch/arm/mach-exynos/pm.c
@@ -161,7 +161,7 @@ void exynos_enter_aftr(void)
exynos_pm_central_suspend();
- if (soc_is_exynos4412()) {
+ if (soc_is_exynos4412() || soc_is_exynos4212()) {
/* Setting SEQ_OPTION register */
pmu_raw_writel(S5P_USE_STANDBY_WFI0 | S5P_USE_STANDBY_WFE0,
S5P_CENTRAL_SEQ_OPTION);
diff --git a/arch/arm/mach-exynos/suspend.c b/arch/arm/mach-exynos/suspend.c
index 3bf14ca78b62..df1e10033f90 100644
--- a/arch/arm/mach-exynos/suspend.c
+++ b/arch/arm/mach-exynos/suspend.c
@@ -231,6 +231,7 @@ static int __init exynos_pmu_irq_init(struct device_node *node,
EXYNOS_PMU_IRQ(exynos3250_pmu_irq, "samsung,exynos3250-pmu");
EXYNOS_PMU_IRQ(exynos4210_pmu_irq, "samsung,exynos4210-pmu");
+EXYNOS_PMU_IRQ(exynos4212_pmu_irq, "samsung,exynos4212-pmu");
EXYNOS_PMU_IRQ(exynos4412_pmu_irq, "samsung,exynos4412-pmu");
EXYNOS_PMU_IRQ(exynos5250_pmu_irq, "samsung,exynos5250-pmu");
EXYNOS_PMU_IRQ(exynos5420_pmu_irq, "samsung,exynos5420-pmu");
@@ -640,6 +641,9 @@ static const struct of_device_id exynos_pmu_of_device_ids[] __initconst = {
}, {
.compatible = "samsung,exynos4210-pmu",
.data = &exynos4_pm_data,
+ }, {
+ .compatible = "samsung,exynos4212-pmu",
+ .data = &exynos4_pm_data,
}, {
.compatible = "samsung,exynos4412-pmu",
.data = &exynos4_pm_data,
--
2.40.0
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