diff mbox series

[2/2] arm64: platform: Enable Exynos Multi-Core Timer driver

Message ID 20211101193531.15078-3-semen.protsenko@linaro.org (mailing list archive)
State Accepted
Commit ce96a964682ac11a7f6823397dfdb5026d459f37
Headers show
Series clocksource: exynos_mct: Enable MCT on ARM64 | expand

Commit Message

Sam Protsenko Nov. 1, 2021, 7:35 p.m. UTC 
From: Marek Szyprowski <m.szyprowski@samsung.com>

Some ARM64 Exynos SoCs have MCT timer block, e.g. Exynos850 and
Exynos5433. CLKSRC_EXYNOS_MCT option is not visible unless COMPILE_TEST
is enabled. Select CLKSRC_EXYNOS_MCT option for ARM64 ARCH_EXYNOS like
it's done in arch/arm/mach-exynos/Kconfig, to enable MCT timer support
for ARM64 Exynos SoCs.

Even though ARM architected timer is available on all ARM64 SoCs, and
used for managing timer hardware and clock source events, MCT timer
still can be used as a wakeup source, as stated in commitae460fd9164b
("clocksource/drivers/exynos_mct: Prioritise Arm arch timer on arm64").
It's also nice to be able to test available MCT IP-core.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Tested-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
---
 arch/arm64/Kconfig.platforms | 1 +
 1 file changed, 1 insertion(+)

Comments

Krzysztof Kozlowski Nov. 16, 2021, 10:24 a.m. UTC | #1 
On Mon, 1 Nov 2021 21:35:31 +0200, Sam Protsenko wrote:
> From: Marek Szyprowski <m.szyprowski@samsung.com>
> 
> Some ARM64 Exynos SoCs have MCT timer block, e.g. Exynos850 and
> Exynos5433. CLKSRC_EXYNOS_MCT option is not visible unless COMPILE_TEST
> is enabled. Select CLKSRC_EXYNOS_MCT option for ARM64 ARCH_EXYNOS like
> it's done in arch/arm/mach-exynos/Kconfig, to enable MCT timer support
> for ARM64 Exynos SoCs.
> 
> [...]

Applied, thanks!

[2/2] arm64: platform: Enable Exynos Multi-Core Timer driver
      commit: ddb0fc6f055d12518b724fd1ee00669e07f03b96

Best regards,
Sam Protsenko Nov. 23, 2021, 1:32 p.m. UTC | #2 
On Tue, 16 Nov 2021 at 12:24, Krzysztof Kozlowski
<krzysztof.kozlowski@canonical.com> wrote:
>
> On Mon, 1 Nov 2021 21:35:31 +0200, Sam Protsenko wrote:
> > From: Marek Szyprowski <m.szyprowski@samsung.com>
> >
> > Some ARM64 Exynos SoCs have MCT timer block, e.g. Exynos850 and
> > Exynos5433. CLKSRC_EXYNOS_MCT option is not visible unless COMPILE_TEST
> > is enabled. Select CLKSRC_EXYNOS_MCT option for ARM64 ARCH_EXYNOS like
> > it's done in arch/arm/mach-exynos/Kconfig, to enable MCT timer support
> > for ARM64 Exynos SoCs.
> >
> > [...]
>
> Applied, thanks!
>
> [2/2] arm64: platform: Enable Exynos Multi-Core Timer driver
>       commit: ddb0fc6f055d12518b724fd1ee00669e07f03b96
>

Hi Krzysztof,

Can you please let me know where exactly this one is applied? I've
checked your tree and linux-next, but wasn't able to find it.

Thanks!

> Best regards,
> --
> Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Krzysztof Kozlowski Nov. 23, 2021, 2:33 p.m. UTC | #3 
On 23/11/2021 14:32, Sam Protsenko wrote:
> On Tue, 16 Nov 2021 at 12:24, Krzysztof Kozlowski
> <krzysztof.kozlowski@canonical.com> wrote:
>>
>> On Mon, 1 Nov 2021 21:35:31 +0200, Sam Protsenko wrote:
>>> From: Marek Szyprowski <m.szyprowski@samsung.com>
>>>
>>> Some ARM64 Exynos SoCs have MCT timer block, e.g. Exynos850 and
>>> Exynos5433. CLKSRC_EXYNOS_MCT option is not visible unless COMPILE_TEST
>>> is enabled. Select CLKSRC_EXYNOS_MCT option for ARM64 ARCH_EXYNOS like
>>> it's done in arch/arm/mach-exynos/Kconfig, to enable MCT timer support
>>> for ARM64 Exynos SoCs.
>>>
>>> [...]
>>
>> Applied, thanks!
>>
>> [2/2] arm64: platform: Enable Exynos Multi-Core Timer driver
>>       commit: ddb0fc6f055d12518b724fd1ee00669e07f03b96
>>
> 
> Hi Krzysztof,
> 
> Can you please let me know where exactly this one is applied? I've
> checked your tree and linux-next, but wasn't able to find it.
> 


It's in my tree. It should be also in linux-next since it was applied a
week ago. Commit msg seems valid.

Best regards,
Krzysztof
diff mbox series

Patch

diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms
index 1aa8b7073218..91f5e9568122 100644
--- a/arch/arm64/Kconfig.platforms
+++ b/arch/arm64/Kconfig.platforms
@@ -89,6 +89,7 @@  config ARCH_BRCMSTB
 config ARCH_EXYNOS
 	bool "ARMv8 based Samsung Exynos SoC family"
 	select COMMON_CLK_SAMSUNG
+	select CLKSRC_EXYNOS_MCT
 	select EXYNOS_PM_DOMAINS if PM_GENERIC_DOMAINS
 	select EXYNOS_PMU
 	select PINCTRL