abf97755ae
Add reset controller driver exposing various reset faculties, implemented by System Reset Controller IP block. Cc: Lucas Stach <l.stach@pengutronix.de> Cc: Mark Rutland <mark.rutland@arm.com> Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
48 lines
1.1 KiB
Plaintext
48 lines
1.1 KiB
Plaintext
Freescale i.MX7 System Reset Controller
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======================================
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Please also refer to reset.txt in this directory for common reset
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controller binding usage.
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Required properties:
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- compatible: Should be "fsl,imx7-src", "syscon"
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- reg: should be register base and length as documented in the
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datasheet
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- interrupts: Should contain SRC interrupt
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- #reset-cells: 1, see below
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example:
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src: reset-controller@30390000 {
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compatible = "fsl,imx7d-src", "syscon";
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reg = <0x30390000 0x2000>;
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interrupts = <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>;
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#reset-cells = <1>;
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};
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Specifying reset lines connected to IP modules
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==============================================
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The system reset controller can be used to reset various set of
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peripherals. Device nodes that need access to reset lines should
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specify them as a reset phandle in their corresponding node as
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specified in reset.txt.
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Example:
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pcie: pcie@33800000 {
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...
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resets = <&src IMX7_RESET_PCIEPHY>,
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<&src IMX7_RESET_PCIE_CTRL_APPS_EN>;
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reset-names = "pciephy", "apps";
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...
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};
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For list of all valid reset indicies see
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<dt-bindings/reset/imx7-reset.h>
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