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Many Motorola phones like droid 4 are using a custom PMIC called CPCAP or 6556002. We can support it's core features quite easily with regmap_spi and regmap_irq. The children of cpcap, such as regulators, ADC and USB, can be just regular device drivers and defined in the dts file. They get probed as we call of_platform_populate() at the end of our probe, and then the children can just call dev_get_regmap(dev.parent, NULL) to get the regmap. Cc: devicetree@vger.kernel.org Cc: Marcel Partap <mpartap@gmx.net> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Scott <michael.scott@linaro.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
32 lines
969 B
Plaintext
32 lines
969 B
Plaintext
Motorola CPCAP PMIC device tree binding
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Required properties:
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- compatible : One or both of "motorola,cpcap" or "ste,6556002"
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- reg : SPI chip select
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- interrupt-parent : The parent interrupt controller
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- interrupts : The interrupt line the device is connected to
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- interrupt-controller : Marks the device node as an interrupt controller
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- #interrupt-cells : The number of cells to describe an IRQ, should be 2
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- #address-cells : Child device offset number of cells, should be 1
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- #size-cells : Child device size number of cells, should be 0
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- spi-max-frequency : Typically set to 3000000
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- spi-cs-high : SPI chip select direction
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Example:
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&mcspi1 {
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cpcap: pmic@0 {
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compatible = "motorola,cpcap", "ste,6556002";
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reg = <0>; /* cs0 */
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interrupt-parent = <&gpio1>;
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interrupts = <7 IRQ_TYPE_EDGE_RISING>;
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interrupt-controller;
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#interrupt-cells = <2>;
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#address-cells = <1>;
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#size-cells = <0>;
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spi-max-frequency = <3000000>;
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spi-cs-high;
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};
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};
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