Re: [PATCH v4 02/10] dt-bindings: spi: Move the bindings for the FSL QSPI driver

[Schrempf Frieder <frieder.schrempf@kontron.De>]

On 08.11.18 09:37, Boris Brezillon wrote:
> On Wed,  7 Nov 2018 15:43:19 +0100
> Frieder Schrempf <frieder.schrempf@kontron.de> wrote:
> 
>> From: Frieder Schrempf <frieder.schrempf@exceet.de>
>>
>> Move the documentation of the old SPI NOR driver to the place of the new
>> SPI memory interface based driver.
>>
>> Signed-off-by: Frieder Schrempf <frieder.schrempf@exceet.de>
>> ---
>>   .../devicetree/bindings/mtd/fsl-quadspi.txt     | 65 --------------------
>>   .../devicetree/bindings/spi/spi-fsl-qspi.txt    | 65 ++++++++++++++++++++
> 
> Did you use -M when you generated patches with git format-patch?
> Normally, when you move a file without changing anything, the diff is
> smaller than that.

No, I didn't use -M. I thought the default settings would be ok, but -M 
makes this much shorter of course.

>>   2 files changed, 65 insertions(+), 65 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/mtd/fsl-quadspi.txt b/Documentation/devicetree/bindings/mtd/fsl-quadspi.txt
>> deleted file mode 100644
>> index 483e9cf..0000000
>> --- a/Documentation/devicetree/bindings/mtd/fsl-quadspi.txt
>> +++ /dev/null
>> @@ -1,65 +0,0 @@
>> -* Freescale Quad Serial Peripheral Interface(QuadSPI)
>> -
>> -Required properties:
>> -  - compatible : Should be "fsl,vf610-qspi", "fsl,imx6sx-qspi",
>> -		 "fsl,imx7d-qspi", "fsl,imx6ul-qspi",
>> -		 "fsl,ls1021a-qspi"
>> -		 or
>> -		 "fsl,ls2080a-qspi" followed by "fsl,ls1021a-qspi",
>> -		 "fsl,ls1043a-qspi" followed by "fsl,ls1021a-qspi"
>> -  - reg : the first contains the register location and length,
>> -          the second contains the memory mapping address and length
>> -  - reg-names: Should contain the reg names "QuadSPI" and "QuadSPI-memory"
>> -  - interrupts : Should contain the interrupt for the device
>> -  - clocks : The clocks needed by the QuadSPI controller
>> -  - clock-names : Should contain the name of the clocks: "qspi_en" and "qspi".
>> -
>> -Optional properties:
>> -  - fsl,qspi-has-second-chip: The controller has two buses, bus A and bus B.
>> -                              Each bus can be connected with two NOR flashes.
>> -			      Most of the time, each bus only has one NOR flash
>> -			      connected, this is the default case.
>> -			      But if there are two NOR flashes connected to the
>> -			      bus, you should enable this property.
>> -			      (Please check the board's schematic.)
>> -  - big-endian : That means the IP register is big endian
>> -
>> -Example:
>> -
>> -qspi0: quadspi@40044000 {
>> -	compatible = "fsl,vf610-qspi";
>> -	reg = <0x40044000 0x1000>, <0x20000000 0x10000000>;
>> -	reg-names = "QuadSPI", "QuadSPI-memory";
>> -	interrupts = <0 24 IRQ_TYPE_LEVEL_HIGH>;
>> -	clocks = <&clks VF610_CLK_QSPI0_EN>,
>> -		<&clks VF610_CLK_QSPI0>;
>> -	clock-names = "qspi_en", "qspi";
>> -
>> -	flash0: s25fl128s@0 {
>> -		....
>> -	};
>> -};
>> -
>> -Example showing the usage of two SPI NOR devices:
>> -
>> -&qspi2 {
>> -	pinctrl-names = "default";
>> -	pinctrl-0 = <&pinctrl_qspi2>;
>> -	status = "okay";
>> -
>> -	flash0: n25q256a@0 {
>> -		#address-cells = <1>;
>> -		#size-cells = <1>;
>> -		compatible = "micron,n25q256a", "jedec,spi-nor";
>> -		spi-max-frequency = <29000000>;
>> -		reg = <0>;
>> -	};
>> -
>> -	flash1: n25q256a@1 {
>> -		#address-cells = <1>;
>> -		#size-cells = <1>;
>> -		compatible = "micron,n25q256a", "jedec,spi-nor";
>> -		spi-max-frequency = <29000000>;
>> -		reg = <1>;
>> -	};
>> -};
>> diff --git a/Documentation/devicetree/bindings/spi/spi-fsl-qspi.txt b/Documentation/devicetree/bindings/spi/spi-fsl-qspi.txt
>> new file mode 100644
>> index 0000000..483e9cf
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/spi/spi-fsl-qspi.txt
>> @@ -0,0 +1,65 @@
>> +* Freescale Quad Serial Peripheral Interface(QuadSPI)
>> +
>> +Required properties:
>> +  - compatible : Should be "fsl,vf610-qspi", "fsl,imx6sx-qspi",
>> +		 "fsl,imx7d-qspi", "fsl,imx6ul-qspi",
>> +		 "fsl,ls1021a-qspi"
>> +		 or
>> +		 "fsl,ls2080a-qspi" followed by "fsl,ls1021a-qspi",
>> +		 "fsl,ls1043a-qspi" followed by "fsl,ls1021a-qspi"
>> +  - reg : the first contains the register location and length,
>> +          the second contains the memory mapping address and length
>> +  - reg-names: Should contain the reg names "QuadSPI" and "QuadSPI-memory"
>> +  - interrupts : Should contain the interrupt for the device
>> +  - clocks : The clocks needed by the QuadSPI controller
>> +  - clock-names : Should contain the name of the clocks: "qspi_en" and "qspi".
>> +
>> +Optional properties:
>> +  - fsl,qspi-has-second-chip: The controller has two buses, bus A and bus B.
>> +                              Each bus can be connected with two NOR flashes.
>> +			      Most of the time, each bus only has one NOR flash
>> +			      connected, this is the default case.
>> +			      But if there are two NOR flashes connected to the
>> +			      bus, you should enable this property.
>> +			      (Please check the board's schematic.)
>> +  - big-endian : That means the IP register is big endian
>> +
>> +Example:
>> +
>> +qspi0: quadspi@40044000 {
>> +	compatible = "fsl,vf610-qspi";
>> +	reg = <0x40044000 0x1000>, <0x20000000 0x10000000>;
>> +	reg-names = "QuadSPI", "QuadSPI-memory";
>> +	interrupts = <0 24 IRQ_TYPE_LEVEL_HIGH>;
>> +	clocks = <&clks VF610_CLK_QSPI0_EN>,
>> +		<&clks VF610_CLK_QSPI0>;
>> +	clock-names = "qspi_en", "qspi";
>> +
>> +	flash0: s25fl128s@0 {
>> +		....
>> +	};
>> +};
>> +
>> +Example showing the usage of two SPI NOR devices:
>> +
>> +&qspi2 {
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&pinctrl_qspi2>;
>> +	status = "okay";
>> +
>> +	flash0: n25q256a@0 {
>> +		#address-cells = <1>;
>> +		#size-cells = <1>;
>> +		compatible = "micron,n25q256a", "jedec,spi-nor";
>> +		spi-max-frequency = <29000000>;
>> +		reg = <0>;
>> +	};
>> +
>> +	flash1: n25q256a@1 {
>> +		#address-cells = <1>;
>> +		#size-cells = <1>;
>> +		compatible = "micron,n25q256a", "jedec,spi-nor";
>> +		spi-max-frequency = <29000000>;
>> +		reg = <1>;
>> +	};
>> +};
>