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From: Philipp Zabel <p.zabel@pengutronix.de>
To: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
	"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
	Linus Walleij <linus.walleij@linaro.org>,
	Will Deacon <will.deacon@arm.com>, Stefan Agner <stefan@agner.ch>,
	Nikolay Borisov <Nikolay.Borisov@arm.com>,
	Peter Meerwald <pmeerw@pmeerw.net>,
	"linux-api@vger.kernel.org" <linux-api@vger.kernel.org>,
	Jiri Slaby <jslaby@suse.cz>,
	Mauro Carvalho Chehab <mchehab@osg.samsung.com>,
	Linux-Arch <linux-arch@vger.kernel.org>,
	Daniel Thompson <daniel.thompson@linaro.org>,
	Russell King <linux@arm.linux.org.uk>,
	Pawel Moll <pawel.moll@arm.com>, Jonathan Corbet <corbet@lwn.net>,
	Lee Jones <lee.jones@linaro.org>,
	Daniel Lezcano <daniel.lezcano@linaro.org>,
	Chanwoo Choi <cw00.choi@samsung.com>,
	Andy Shevchenko <andy.shevchenko@gmail.com>,
	Antti Palosaari <crope@iki.fi>,
	Geert Uytterhoeven
	<geert@linux-m68k.org>"linux-serial@vger.kernel.org" <lin>
Subject: Re: [PATCH v7 05/15] dt-bindings: Document the STM32 reset bindings
Date: Tue, 05 May 2015 17:42:37 +0200	[thread overview]
Message-ID: <1430840557.3035.60.camel@pengutronix.de> (raw)
In-Reply-To: <CALszF6DyUA7Wr2qo4sASFBTRwwjhGAkFKRYnY+1UwHmf4nTj5w@mail.gmail.com>

Am Dienstag, den 05.05.2015, 17:19 +0200 schrieb Maxime Coquelin:
> >> For example, includes/dt-bindings/mfd/stm32f4-rcc.h would look like:
> >>
> >> #define GPIOA 0
> >> #define GPIOB 1
> >> ...
> >> #define LTDC 186

That looks a bit fragile.
At least the defines for the indices should be properly namespaced,
check out include/dt-bindings/gpio/tegra-gpio.h for a similar case.

> >> #define STM32F4_RESET(x) (x + 128)
> >> #define STM32F4_CLOCK(x) (x + 384)
> >>
> >> Then, in DT, a reset would be described like this:
> >>
> >> timer2 {
> >>      resets = <&rcc STM32F4_RESET(TIM2)>;
> >> };
> >>
> >> Phillip, Daniel, does that look acceptable to you?
> >
> >
> > Doesn't look unreasonable.
> >
> > I am a little uneasy simply because there are very few similar header files
> > in that directory but I haven't thought of a better idea.
> 
> Since this file will be shared by both clock and reset drivers, I
> don't see better option.
> I will implement it in v8 if Philipp agrees.

Are the device tree maintainers happy with this idiom spreading?
Except for the point above, I think this is acceptable.

regards
Philipp

  reply	other threads:[~2015-05-05 15:42 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-04-30 16:20 [PATCH v7 00/15] Add support to STMicroelectronics STM32 family Maxime Coquelin
2015-04-30 16:20 ` [PATCH v7 01/15] scripts: link-vmlinux: Don't pass page offset to kallsyms if XIP Kernel Maxime Coquelin
2015-04-30 16:20 ` [PATCH v7 02/15] ARM: ARMv7-M: Enlarge vector table up to 256 entries Maxime Coquelin
2015-04-30 16:20 ` [PATCH v7 03/15] dt-bindings: Document the ARM System timer bindings Maxime Coquelin
2015-04-30 16:20 ` [PATCH v7 04/15] clocksource/drivers: Add ARM System timer driver Maxime Coquelin
2015-04-30 16:20 ` [PATCH v7 05/15] dt-bindings: Document the STM32 reset bindings Maxime Coquelin
     [not found]   ` <1430410844-16062-6-git-send-email-mcoquelin.stm32-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-05-01  8:08     ` Daniel Thompson
2015-05-02  7:55       ` Maxime Coquelin
2015-05-02 10:01         ` Daniel Thompson
2015-05-04 10:28           ` Philipp Zabel
     [not found]             ` <1430735320.3722.34.camel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2015-05-04 11:11               ` Maxime Coquelin
2015-05-04 11:25           ` Maxime Coquelin
     [not found]             ` <CALszF6BTb0Ce6jfT5gY4eEtSep6+8XqOxu1LbpUXHmPYX9PmgQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-05-05 14:07               ` Daniel Thompson
2015-05-05 15:19                 ` Maxime Coquelin
2015-05-05 15:42                   ` Philipp Zabel [this message]
2015-05-05 16:07                     ` Daniel Thompson
2015-05-05 17:24                       ` Maxime Coquelin
2015-05-05 17:22                     ` Maxime Coquelin
2015-04-30 16:20 ` [PATCH v7 07/15] dt-bindings: Document the STM32 timer bindings Maxime Coquelin
2015-04-30 16:20 ` [PATCH v7 08/15] clockevents/drivers: Add STM32 Timer driver Maxime Coquelin
2015-04-30 16:20 ` [PATCH v7 09/15] dt-bindings: Document the STM32 USART bindings Maxime Coquelin
2015-04-30 16:20 ` [PATCH v7 10/15] serial: stm32-usart: Add STM32 USART Driver Maxime Coquelin
     [not found] ` <1430410844-16062-1-git-send-email-mcoquelin.stm32-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-04-30 16:20   ` [PATCH v7 06/15] drivers: reset: Add STM32 reset driver Maxime Coquelin
2015-04-30 16:20   ` [PATCH v7 11/15] ARM: Add STM32 family machine Maxime Coquelin
2015-04-30 16:20   ` [PATCH v7 13/15] ARM: dts: Introduce STM32F429 MCU Maxime Coquelin
2015-04-30 16:20 ` [PATCH v7 12/15] ARM: dts: Add ARM System timer as clocksource in armv7m Maxime Coquelin
2015-04-30 16:20 ` [PATCH v7 14/15] ARM: configs: Add STM32 defconfig Maxime Coquelin
2015-04-30 16:20 ` [PATCH v7 15/15] MAINTAINERS: Add entry for STM32 MCUs Maxime Coquelin

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