2015-05-19 11:59 GMT+02:00 Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>: > On 05/19/2015 11:44 AM, Maxime Coquelin wrote: >> >> 2015-05-19 11:06 GMT+02:00 Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>: >>> >>> On 05/19/2015 10:55 AM, Maxime Coquelin wrote: >>>> >>>> >>>> 2015-05-19 10:16 GMT+02:00 Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>: >>>>> >>>>> >>>>> On 05/18/2015 04:03 PM, Maxime Coquelin wrote: >>>>>> >>>>>> >>>>>> >>>>>> 2015-05-18 15:10 GMT+02:00 Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>: >>>>>>> >>>>>>> >>>>>>> >>>>>>> On 05/09/2015 09:53 AM, Maxime Coquelin wrote: >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> STM32 MCUs feature 16 and 32 bits general purpose timers with >>>>>>>> prescalers. >>>>>>>> The drivers detects whether the time is 16 or 32 bits, and applies a >>>>>>>> 1024 prescaler value if it is 16 bits. >>>>>>>> >>>>>>>> Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx> >>>>>>>> Tested-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx> >>>>>>>> Signed-off-by: Maxime Coquelin <mcoquelin.stm32@xxxxxxxxx> >>>>>>>> --- >>>>>>>> drivers/clocksource/Kconfig | 8 ++ >>>>>>>> drivers/clocksource/Makefile | 1 + >>>>>>>> drivers/clocksource/timer-stm32.c | 184 >>>>>>>> ++++++++++++++++++++++++++++++++++++++ >>>>>>>> 3 files changed, 193 insertions(+) >>>>>>>> create mode 100644 drivers/clocksource/timer-stm32.c >>>>>>>> >>>>>>>> diff --git a/drivers/clocksource/Kconfig >>>>>>>> b/drivers/clocksource/Kconfig >>>>>>>> index bf9364c..2443520 100644 >>>>>>>> --- a/drivers/clocksource/Kconfig >>>>>>>> +++ b/drivers/clocksource/Kconfig >>>>>>>> @@ -106,6 +106,14 @@ config CLKSRC_EFM32 >>>>>>>> Support to use the timers of EFM32 SoCs as clock source >>>>>>>> and >>>>>>>> clock >>>>>>>> event device. >>>>>>>> >>>>>>>> +config CLKSRC_STM32 >>>>>>>> + bool "Clocksource for STM32 SoCs" if !ARCH_STM32 >>>>>>>> + depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST) >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> Are the interactive bool and the 'COMPILE_TEST' necessary ? >>>>>>> >>>>>> >>>>>> The interactive bool is necessary if we want to be able to >>>>>> select/deselect it in COMPILE_TEST configuration. >>>>>> And personnaly, I think COMPILE_TEST use makes sense. >>>>>> >>>>>> Note that other timer drivers are doing the same thing today >>>>>> (CLKSRC_EFM32, SH_TIMER_CMT, EM_TIMER_STI...). >>>>>> >>>>>> Do you have a specific concern regarding COMPILE_TEST? >>>>> >>>>> >>>>> >>>>> >>>>> Actually, we try to keep the timer selection non-interactive and let >>>>> the >>>>> platform's Kconfig to select the timer. >>>> >>>> >>>> >>>> Ok. >>>> >>>>> >>>>> I like when the code is consistent. The COMPILE_TEST was introduced and >>>>> created a precedence. I would like to get rid of the interactive timer >>>>> selection but I did not have time to go through this yet. >>>> >>>> >>>> >>>> Indeed, consistency is important. >>>> On my side, I don't have a strong opinion regarding the COMPILE_TEST >>>> thing. >>>> IMHO, it is more a subsystem's maintainer choice. >>>> >>>> So, if as a maintainer you don't use it and prefer not supporting it, >>>> I'm fine to provide you a new version without COMPILE_TEST. >>>> Doing that, the interactive selection will disappear too. >>>> >>>> I can provide you a new version this evenning. >>> >>> >>> >>> Ok, great. >> >> >> Is the below Kconfig entry fine for you? >> >> config CLKSRC_STM32 >> def_bool y if ARCH_STM32 >> select CLKSRC_MMIO > > > config CLKSRC_STM32 > bool > select CLKSRC_MMIO > > and in the arch/arm/mach-stm32/Kconfig add select CLKSRC_STM32 Ok, I will send a patch for arch/arm/Kconfig, as Arnd already applied the one intruducing ARCH_STM32. Thanks, Maxime > > >> Best regards, >> Maxime >> >> >>> >>> Thanks >>> -- Daniel >>> >>> >>>>> >>>>> >>>>> >>>>> -- >>>>> <http://www.linaro.org/> Linaro.org │ Open source software for ARM >>>>> SoCs >>>>> >>>>> Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook | >>>>> <http://twitter.com/#!/linaroorg> Twitter | >>>>> <http://www.linaro.org/linaro-blog/> Blog >>>>> >>> >>> >>> -- >>> <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs >>> >>> Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook | >>> <http://twitter.com/#!/linaroorg> Twitter | >>> <http://www.linaro.org/linaro-blog/> Blog >>> > > > -- > <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs > > Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook | > <http://twitter.com/#!/linaroorg> Twitter | > <http://www.linaro.org/linaro-blog/> Blog > -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
