linux-kernel - Re: [PATCH v5 1/5] doc: bindings: Add document for mfd hi665x PMIC

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Date:	Tue, 26 Jan 2016 14:26:51 +0800
From:	chenfeng <puck.chen@...ilicon.com>
To:	Lee Jones <lee.jones@...aro.org>
CC:	<linux-kernel@...r.kernel.org>, <lgirdwood@...il.com>,
	<broonie@...nel.org>, <yudongbin@...ilicon.com>,
	<saberlily.xia@...ilicon.com>, <suzhuangluan@...ilicon.com>,
	<kong.kongxinwei@...ilicon.com>, <xuyiping@...ilicon.com>,
	<z.liuxinliang@...ilicon.com>, <puck.chenfeng@...il.com>,
	<weidong2@...ilicon.com>, <w.f@...wei.com>,
	<qijiwen@...ilicon.com>, <peter.panshilin@...ilicon.com>,
	<dan.zhao@...ilicon.com>, <linuxarm@...wei.com>,
	<liguozhu@...ilicon.com>
Subject: Re: [PATCH v5 1/5] doc: bindings: Add document for mfd hi665x PMIC



On 2016/1/25 20:53, Lee Jones wrote:
> On Mon, 11 Jan 2016, Chen Feng wrote:
> 
>> Add document for mfd driver hi655x pmic driver
>>
>> Signed-off-by: Chen Feng <puck.chen@...ilicon.com>
>> Signed-off-by: Fei Wang <w.f@...wei.com>
>> Signed-off-by: Xinwei Kong <kong.kongxinwei@...ilicon.com>
>> ---
>>  .../devicetree/bindings/mfd/hisilicon,hi655x.txt   | 28 ++++++++++++++++++++++
>>  1 file changed, 28 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/mfd/hisilicon,hi655x.txt
>>
>> diff --git a/Documentation/devicetree/bindings/mfd/hisilicon,hi655x.txt b/Documentation/devicetree/bindings/mfd/hisilicon,hi655x.txt
>> new file mode 100644
>> index 0000000..3180c40
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/mfd/hisilicon,hi655x.txt
>> @@ -0,0 +1,28 @@
>> +Hisilicon hi655x Power Management Integrated Circuit (PMIC)
>> +
>> +The hardware layout for access PMIC Hi655x from AP SoC Hi6220.
>> +Between PMIC Hi655x and Hi6220, the physical signal channel is SSI.
>> +We can use memory-mapped I/O to communicate.
>> +
>> ++----------------+             +-------------+
>> +|                |             |             |
>> +|    Hi6220      |   SSI bus   |   Hi655x    |
>> +|                |-------------|             |
>> +|                |(REGMAP_MMIO)|             |
>> ++----------------+             +-------------+
>> +
>> +Required properties:
>> +- compatible: Should be "hisilicon,hi655x-pmic"
>> +- reg: Base address of PMIC on hi6220 soc
> 
> SoC
> 
>> +- interrupt-controller: Hi655x has internal IRQs (has own IRQ domain).
>> +- pmic-gpios: The gpio used by pmic irq.
> 
> PMIC IRQ
> 
>> +
>> +Example:
>> +	pmic: pmic@...00000 {
>> +		compatible = "hisilicon,hi655x-pmic";
>> +		reg = <0x0 0xf8000000 0x0 0x1000>;
>> +		#interrupt-cells = <2>;
>> +		interrupt-controller;
>> +		pmic-gpios = <&gpio1 2 0>;
> 
> What's the last cell for here?  If they are flags, there is probably a
> #define you can use in dt-include.
ok, I will use the irq flag in dt-include.
> 
>> +		status = "disabled";
> 
> What's the point in disabling example code?
It's just copy from the dts, I will drop this.
> 
>> +	}
>