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git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
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: Mingkai Hu <Mingkai.hu@freescale.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
authored by Mingkai Hu and committed by Grant Likely f3016fa5 8b60d6c2
+23
-1
Documentation/powerpc/dts-bindings/fsl/spi.txt
+23
-1
Documentation/powerpc/dts-bindings/fsl/spi.txt
···
1
1
* SPI (Serial Peripheral Interface)
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Required properties:
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-
- cell-index : SPI controller index.
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+
- cell-index : QE SPI subblock index.
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+
0: QE subblock SPI1
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+
1: QE subblock SPI2
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- compatible : should be "fsl,spi".
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- mode : the SPI operation mode, it can be "cpu" or "cpu-qe".
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- reg : Offset and length of the register set for the device
···
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mode = "cpu";
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gpios = <&gpio 18 1 // device reg=<0>
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&gpio 19 1>; // device reg=<1>
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+
};
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+
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+
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* eSPI (Enhanced Serial Peripheral Interface)
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+
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Required properties:
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- compatible : should be "fsl,mpc8536-espi".
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- reg : Offset and length of the register set for the device.
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+
- interrupts : should contain eSPI interrupt, the device has one interrupt.
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- fsl,espi-num-chipselects : the number of the chipselect signals.
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+
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Example:
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spi@110000 {
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#address-cells = <1>;
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+
#size-cells = <0>;
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compatible = "fsl,mpc8536-espi";
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+
reg = <0x110000 0x1000>;
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+
interrupts = <53 0x2>;
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+
interrupt-parent = <&mpic>;
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+
fsl,espi-num-chipselects = <4>;
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};
+52
arch/powerpc/boot/dts/mpc8536ds.dts
+52
arch/powerpc/boot/dts/mpc8536ds.dts
···
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};
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};
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+
spi@7000 {
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+
#address-cells = <1>;
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+
#size-cells = <0>;
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+
compatible = "fsl,mpc8536-espi";
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+
reg = <0x7000 0x1000>;
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+
interrupts = <59 0x2>;
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+
interrupt-parent = <&mpic>;
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+
fsl,espi-num-chipselects = <4>;
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+
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+
flash@0 {
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+
#address-cells = <1>;
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+
#size-cells = <1>;
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+
compatible = "spansion,s25sl12801";
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+
reg = <0>;
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+
spi-max-frequency = <40000000>;
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+
partition@u-boot {
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+
label = "u-boot";
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+
reg = <0x00000000 0x00100000>;
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+
read-only;
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+
};
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+
partition@kernel {
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+
label = "kernel";
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+
reg = <0x00100000 0x00500000>;
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+
read-only;
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+
};
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+
partition@dtb {
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+
label = "dtb";
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+
reg = <0x00600000 0x00100000>;
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read-only;
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};
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+
partition@fs {
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+
label = "file system";
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+
reg = <0x00700000 0x00900000>;
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+
};
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+
};
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+
flash@1 {
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+
compatible = "spansion,s25sl12801";
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+
reg = <1>;
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+
spi-max-frequency = <40000000>;
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+
};
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+
flash@2 {
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+
compatible = "spansion,s25sl12801";
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+
reg = <2>;
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+
spi-max-frequency = <40000000>;
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+
};
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+
flash@3 {
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+
compatible = "spansion,s25sl12801";
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+
reg = <3>;
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+
spi-max-frequency = <40000000>;
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+
};
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+
};
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+
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dma@21300 {
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#address-cells = <1>;
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#size-cells = <1>;
+4
-7
arch/powerpc/boot/dts/p4080ds.dts
+4
-7
arch/powerpc/boot/dts/p4080ds.dts
···
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};
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spi@110000 {
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-
cell-index = <0>;
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#address-cells = <1>;
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#size-cells = <0>;
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-
compatible = "fsl,espi";
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+
compatible = "fsl,p4080-espi", "fsl,mpc8536-espi";
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reg = <0x110000 0x1000>;
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interrupts = <53 0x2>;
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interrupt-parent = <&mpic>;
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-
espi,num-ss-bits = <4>;
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-
mode = "cpu";
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+
fsl,espi-num-chipselects = <4>;
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-
fsl_m25p80@0 {
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+
flash@0 {
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#address-cells = <1>;
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#size-cells = <1>;
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-
compatible = "fsl,espi-flash";
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+
compatible = "spansion,s25sl12801";
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reg = <0>;
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-
linux,modalias = "fsl_m25p80";
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spi-max-frequency = <40000000>; /* input clock */
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partition@u-boot {
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label = "u-boot";