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* Freescale Low Power SPI (LPSPI) for i.MX
Required properties:
- compatible :
- "fsl,imx7ulp-spi" for LPSPI compatible with the one integrated on i.MX7ULP soc
- "fsl,imx8qxp-spi" for LPSPI compatible with the one integrated on i.MX8QXP soc
- reg : address and length of the lpspi master registers
- interrupt-parent : core interrupt controller
- interrupts : lpspi interrupt
- clocks : lpspi clock specifier. Its number and order need to correspond to the
value in clock-names.
- clock-names : Corresponding to per clock and ipg clock in "clocks"
respectively. In i.MX7ULP, it only has per clk, so use CLK_DUMMY
to fill the "ipg" blank.
- spi-slave : spi slave mode support. In slave mode, add this attribute without
value. In master mode, remove it.
Examples:
lpspi2: lpspi@40290000 {
compatible = "fsl,imx7ulp-spi";
reg = <0x40290000 0x10000>;
interrupt-parent = <&intc>;
interrupts = <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clks IMX7ULP_CLK_LPSPI2>,
<&clks IMX7ULP_CLK_DUMMY>;
clock-names = "per", "ipg";
spi-slave;
};
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