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Commit f3016fa5 authored by Mingkai Hu's avatar Mingkai Hu Committed by Grant Likely
Browse files

powerpc/of: add eSPI controller dts bindings and DTS modification 



Also modifiy the document of cell-index in SPI controller. Add the
SPI flash(s25fl128p01) support on p4080ds and mpc8536ds board.

Signed-off-by: default avatarMingkai Hu <Mingkai.hu@freescale.com>
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
parent 8b60d6c2

Documentation/powerpc/dts-bindings/fsl/spi.txt

+23 −1
Original line number Original line Diff line number Diff line 
* SPI (Serial Peripheral Interface)

* SPI (Serial Peripheral Interface)





Required properties:

Required properties:

- cell-index : SPI controller index.

- cell-index : QE SPI subblock index.

		0: QE subblock SPI1

		1: QE subblock SPI2

- compatible : should be "fsl,spi".

- compatible : should be "fsl,spi".

- mode : the SPI operation mode, it can be "cpu" or "cpu-qe".

- mode : the SPI operation mode, it can be "cpu" or "cpu-qe".

- reg : Offset and length of the register set for the device

- reg : Offset and length of the register set for the device
@@ -29,3 +31,23 @@ Example: 
		gpios = <&gpio 18 1	// device reg=<0>

		gpios = <&gpio 18 1	// device reg=<0>

			 &gpio 19 1>;	// device reg=<1>

			 &gpio 19 1>;	// device reg=<1>

	};

	};





* eSPI (Enhanced Serial Peripheral Interface)



Required properties:

- compatible : should be "fsl,mpc8536-espi".

- reg : Offset and length of the register set for the device.

- interrupts : should contain eSPI interrupt, the device has one interrupt.

- fsl,espi-num-chipselects : the number of the chipselect signals.



Example:

	spi@110000 {

		#address-cells = <1>;

		#size-cells = <0>;

		compatible = "fsl,mpc8536-espi";

		reg = <0x110000 0x1000>;

		interrupts = <53 0x2>;

		interrupt-parent = <&mpic>;

		fsl,espi-num-chipselects = <4>;

	};

arch/powerpc/boot/dts/mpc8536ds.dts

+52 −0
Original line number Original line Diff line number Diff line
@@ -108,6 +108,58 @@ 
			};

			};

		};

		};





		spi@7000 {

			#address-cells = <1>;

			#size-cells = <0>;

			compatible = "fsl,mpc8536-espi";

			reg = <0x7000 0x1000>;

			interrupts = <59 0x2>;

			interrupt-parent = <&mpic>;

			fsl,espi-num-chipselects = <4>;



			flash@0 {

				#address-cells = <1>;

				#size-cells = <1>;

				compatible = "spansion,s25sl12801";

				reg = <0>;

				spi-max-frequency = <40000000>;

				partition@u-boot {

					label = "u-boot";

					reg = <0x00000000 0x00100000>;

					read-only;

				};

				partition@kernel {

					label = "kernel";

					reg = <0x00100000 0x00500000>;

					read-only;

				};

				partition@dtb {

					label = "dtb";

					reg = <0x00600000 0x00100000>;

					read-only;

				};

				partition@fs {

					label = "file system";

					reg = <0x00700000 0x00900000>;

				};

			};

			flash@1 {

				compatible = "spansion,s25sl12801";

				reg = <1>;

				spi-max-frequency = <40000000>;

			};

			flash@2 {

				compatible = "spansion,s25sl12801";

				reg = <2>;

				spi-max-frequency = <40000000>;

			};

			flash@3 {

				compatible = "spansion,s25sl12801";

				reg = <3>;

				spi-max-frequency = <40000000>;

			};

		};



		dma@21300 {

		dma@21300 {

			#address-cells = <1>;

			#address-cells = <1>;

			#size-cells = <1>;

			#size-cells = <1>;

arch/powerpc/boot/dts/p4080ds.dts

+4 −7
Original line number Original line Diff line number Diff line
@@ -236,22 +236,19 @@ 
		};

		};





		spi@110000 {

		spi@110000 {

			cell-index = <0>;

			#address-cells = <1>;

			#address-cells = <1>;

			#size-cells = <0>;

			#size-cells = <0>;

			compatible = "fsl,espi";

			compatible = "fsl,p4080-espi", "fsl,mpc8536-espi";

			reg = <0x110000 0x1000>;

			reg = <0x110000 0x1000>;

			interrupts = <53 0x2>;

			interrupts = <53 0x2>;

			interrupt-parent = <&mpic>;

			interrupt-parent = <&mpic>;

			espi,num-ss-bits = <4>;

			fsl,espi-num-chipselects = <4>;

			mode = "cpu";





			fsl_m25p80@0 {

			flash@0 {

				#address-cells = <1>;

				#address-cells = <1>;

				#size-cells = <1>;

				#size-cells = <1>;

				compatible = "fsl,espi-flash";

				compatible = "spansion,s25sl12801";

				reg = <0>;

				reg = <0>;

				linux,modalias = "fsl_m25p80";

				spi-max-frequency = <40000000>; /* input clock */

				spi-max-frequency = <40000000>; /* input clock */

				partition@u-boot {

				partition@u-boot {

					label = "u-boot";

					label = "u-boot";