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kernel add
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NVIDIA Tegra114 SPI controller.
Required properties:
- compatible : For Tegra114, must contain "nvidia,tegra114-spi".
Otherwise, must contain '"nvidia,<chip>-spi", "nvidia,tegra114-spi"' where
<chip> is tegra124, tegra132, or tegra210.
- reg: Should contain SPI registers location and length.
- interrupts: Should contain SPI interrupts.
- clock-names : Must include the following entries:
- spi
- resets : Must contain an entry for each entry in reset-names.
See ../reset/reset.txt for details.
- reset-names : Must include the following entries:
- spi
- dmas : Must contain an entry for each entry in clock-names.
See ../dma/dma.txt for details.
- dma-names : Must include the following entries:
- rx
- tx
- clocks : Must contain an entry for each entry in clock-names.
See ../clocks/clock-bindings.txt for details.
Recommended properties:
- spi-max-frequency: Definition as per
Documentation/devicetree/bindings/spi/spi-bus.txt
Example:
spi@7000d600 {
compatible = "nvidia,tegra114-spi";
reg = <0x7000d600 0x200>;
interrupts = <0 82 0x04>;
spi-max-frequency = <25000000>;
#address-cells = <1>;
#size-cells = <0>;
clocks = <&tegra_car 44>;
clock-names = "spi";
resets = <&tegra_car 44>;
reset-names = "spi";
dmas = <&apbdma 16>, <&apbdma 16>;
dma-names = "rx", "tx";
status = "disabled";
};
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