linux-kernel - Re: [PATCH v2] mtd: spi-nor: add hisilicon spi-nor flash controller driver

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Date:	Mon, 11 Jan 2016 09:20:41 +0800
From:	xuejiancheng <xuejiancheng@...wei.com>
To:	Rob Herring <robh@...nel.org>
CC:	<pawel.moll@....com>, <mark.rutland@....com>,
	<ijc+devicetree@...lion.org.uk>, <galak@...eaurora.org>,
	<dwmw2@...radead.org>, <computersforpeace@...il.com>,
	<shijie.huang@...el.com>, <pengbinquan@...wei.com>,
	<han.xu@...escale.com>, <ezequiel@...guardiasur.com.ar>,
	<fabio.estevam@...escale.com>, <manabian@...il.com>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-mtd@...ts.infradead.org>, <yanhaifeng@...ilicon.com>,
	<yanghongwei@...ilicon.com>, <suwenping@...ilicon.com>,
	<ml.yang@...ilicon.com>, <gaofei@...ilicon.com>,
	<zhangzhenxing@...ilicon.com>, <xuejiancheng@...ilicon.com>
Subject: Re: [PATCH v2] mtd: spi-nor: add hisilicon spi-nor flash controller
 driver

Hi Rob,

On 2016/1/9 23:42, Rob Herring wrote:
> On Fri, Jan 08, 2016 at 09:26:45AM +0800, Jiancheng Xue wrote:
>> add hisilicon spi-nor flash controller driver
>>
>> Signed-off-by: Binquan Peng <pengbinquan@...wei.com>
>> Signed-off-by: Jiancheng Xue <xuejiancheng@...wei.com>
>> ---
> 
> Next time, please include changes in v2 here.
> 

OK. I will remember it. Thank you.

In v2, I mainly fixed some compile warnings.

>>  .../devicetree/bindings/spi/spi-hisi-sfc.txt       |  24 +
>>  drivers/mtd/spi-nor/Kconfig                        |   6 +
>>  drivers/mtd/spi-nor/Makefile                       |   1 +
>>  drivers/mtd/spi-nor/hisi-sfc.c                     | 498 +++++++++++++++++++++
>>  4 files changed, 529 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/spi/spi-hisi-sfc.txt
>>  create mode 100644 drivers/mtd/spi-nor/hisi-sfc.c
>>
>> diff --git a/Documentation/devicetree/bindings/spi/spi-hisi-sfc.txt b/Documentation/devicetree/bindings/spi/spi-hisi-sfc.txt
>> new file mode 100644
>> index 0000000..a0d1e04
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/spi/spi-hisi-sfc.txt
>> @@ -0,0 +1,24 @@
>> +HiSilicon SPI-NOR Flash Controller
>> +
>> +Required properties:
>> +- compatible : Should be "hisilicon,hisi-sfc".
> 
> I missed this last time, but you also need a more specific compatible 
> string with the SOC name in it.
> 

This IP block is used in many SOCs. Do I need to add a specific compatible
string for every SOC? Thank you.

>> +- address-cells : number of cells required to define a chip select
>> +        address on the SPI bus. Should be set to 1. See spi-bus.txt.
>> +- size-cells : Should be 0.
>> +- reg : Offset and length of the register set for the controller device.
>> +- reg-names : Must include the following two entries: "control", "memory".
>> +- clocks : handle to spi-nor flash controller clock.
>> +
>> +Example:
>> +spi-nor-controller@...00000 {
>> +	compatible = "hisilicon,hisi-sfc";
>> +	#address-cells = <1>;
>> +	#size-cells = <0>;
>> +	reg = <0x10000000 0x1000>, <0x14000000 0x1000000>;
>> +	reg-names = "control", "memory";
>> +	clocks = <&clock HI3519_FMC_CLK>;
>> +	spi-nor@0 {
>> +		compatible = "jedec,spi-nor";
>> +		reg = <0>;
>> +	};
>> +};
> 
> .
>