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

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

Signed-off-by: Mingkai Hu <Mingkai.hu@freescale.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
Mingkai Hu 2010-10-12 18:18:33 +08:00 committed by Grant Likely
parent 8b60d6c25b
commit f3016fa591
3 changed files with 79 additions and 8 deletions
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24
Documentation/powerpc/dts-bindings/fsl/spi.txt
View File

@ -1,7 +1,9 @@
* SPI (Serial Peripheral Interface)
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".
- mode : the SPI operation mode, it can be "cpu" or "cpu-qe".
- reg : Offset and length of the register set for the device
@ -29,3 +31,23 @@ Example:
gpios = <&gpio 18 1 // device reg=<0>
&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>;
};

52
arch/powerpc/boot/dts/mpc8536ds.dts
View File

@ -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 {
#address-cells = <1>;
#size-cells = <1>;

11
arch/powerpc/boot/dts/p4080ds.dts
View File

@ -236,22 +236,19 @@
};
spi@110000 {
cell-index = <0>;
#address-cells = <1>;
#size-cells = <0>;
compatible = "fsl,espi";
compatible = "fsl,p4080-espi", "fsl,mpc8536-espi";
reg = <0x110000 0x1000>;
interrupts = <53 0x2>;
interrupt-parent = <&mpic>;
espi,num-ss-bits = <4>;
mode = "cpu";
fsl,espi-num-chipselects = <4>;
fsl_m25p80@0 {
flash@0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "fsl,espi-flash";
compatible = "spansion,s25sl12801";
reg = <0>;
linux,modalias = "fsl_m25p80";
spi-max-frequency = <40000000>; /* input clock */
partition@u-boot {
label = "u-boot";