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The BCM2711 and BCM7211 chips use the BCM2835 SPI controller, but there are severl instances of those in the system and they all share the same interrupt line. Document specific compatible strings such that the driver can take appropriate actions. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Link: https://lore.kernel.org/r/20200604034655.15930-2-f.fainelli@gmail.com Signed-off-by: Rob Herring <robh@kernel.org>
23 lines
725 B
Text
23 lines
725 B
Text
Broadcom BCM2835 SPI0 controller
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The BCM2835 contains two forms of SPI master controller, one known simply as
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SPI0, and the other known as the "Universal SPI Master"; part of the
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auxiliary block. This binding applies to the SPI0 controller.
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Required properties:
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- compatible: Should be one of "brcm,bcm2835-spi" for BCM2835/2836/2837 or
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"brcm,bcm2711-spi" for BCM2711 or "brcm,bcm7211-spi" for BCM7211.
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- reg: Should contain register location and length.
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- interrupts: Should contain interrupt.
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- clocks: The clock feeding the SPI controller.
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Example:
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spi@20204000 {
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compatible = "brcm,bcm2835-spi";
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reg = <0x7e204000 0x1000>;
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interrupts = <2 22>;
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clocks = <&clk_spi>;
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#address-cells = <1>;
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#size-cells = <0>;
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};
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