linux-kernel - Re: [Patch v3 0/5] Introduce keystone reset driver

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Date:	Wed, 21 May 2014 17:28:43 +0300
From:	Ivan Khoronzhuk <ivan.khoronzhuk@...com>
To:	Arnd Bergmann <arnd@...db.de>
CC:	Santosh Shilimkar <santosh.shilimkar@...com>,
	<dbaryshkov@...il.com>, <dwmw2@...radead.org>,
	<ijc+devicetree@...lion.org.uk>, <robh+dt@...nel.org>,
	<pawel.moll@....com>, <mark.rutland@....com>,
	<galak@...eaurora.org>, <grant.likely@...aro.org>,
	<rdunlap@...radead.org>, <linux@....linux.org.uk>,
	<grygorii.strashko@...com>, <olof@...om.net>, <w-kwok2@...com>,
	<sboyd@...eaurora.org>, <devicetree@...r.kernel.org>,
	<linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [Patch v3 0/5] Introduce keystone reset driver


On 05/20/2014 10:27 PM, Arnd Bergmann wrote:
> On Tuesday 20 May 2014 21:35:23 Ivan Khoronzhuk wrote:
>> Thank for the note.
>>
>> Ok.
>>
>> Memory map:
>> [00 02310000 - 00 023101FF] size=512 PLL Controller
>> [00 02620000 - 00 02620FFF] size=4K device state control registers
>>
>> I'll define in DT two new syscon compatible nodes like:
>>
>>           pllctrl: pll_controller {
>>               compatible = "syscon";
>>               reg = <0x2310000 0x200>;
>>           };
>>
>>           devctrl: device_state_control {
>>               compatible = "syscon";
>>               reg = <0x2620000 0x1000>;
>>           };
> Please add a well-defined compatible-string in addition to "syscon" as
> well.
>
>> then correct reset-controller node like:
>>
>>           rstctrl: reset-controller {
>>               compatible = "ti,keystone-reset";
>>               reg = <0xE4 0x10>, <0x328 0x10>;
>>               reg-names = "pllregs", "muxregs";
>>               syscon1 = <&pllctrl>;
>>               syscon2 = <&devctrl>;
>>               ti,wdt_list = <0>;
>>           };
> You can't really use the "reg" property to refer to syscon
> registers, but you can make up your own property for that,
> or put the register numbers into the syscon1/2 properties,
> or just hardcode the offsets in the driver.
>
>> And correct reset-controller code to get regmap by phandle,
>> then access registers by regmap.
>>
>> Also I'll post two separate patches that add syscon nodes in question.
> Sounds good, thanks!
>
> 	Arnd

Arnd,

I've sent an updated patch series v4 with your notes applied.
Could you please take a glance on it.


-- 
Regards,
Ivan Khoronzhuk

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