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https://github.com/Evolution-X-Devices/kernel_xiaomi_sm8450-devicetrees
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719cc9aa79
Add devicetree bindings snapshot to the devicetree project Change-Id: I20b46d194bd3b107ddcb3e35283e6dafa27adec1
36 lines
1.1 KiB
Plaintext
36 lines
1.1 KiB
Plaintext
Binding for Qualcomm Atheros AR7xxx/AR9xxx DDR controller
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The DDR controller of the AR7xxx and AR9xxx families provides an interface
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to flush the FIFO between various devices and the DDR. This is mainly used
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by the IRQ controller to flush the FIFO before running the interrupt handler
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of such devices.
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Required properties:
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- compatible: has to be "qca,<soc-type>-ddr-controller",
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"qca,[ar7100|ar7240]-ddr-controller" as fallback.
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On SoC with PCI support "qca,ar7100-ddr-controller" should be used as
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fallback, otherwise "qca,ar7240-ddr-controller" should be used.
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- reg: Base address and size of the controller's memory area
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- #qca,ddr-wb-channel-cells: Specifies the number of cells needed to encode
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the write buffer channel index, should be 1.
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Example:
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ddr_ctrl: memory-controller@18000000 {
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compatible = "qca,ar9132-ddr-controller",
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"qca,ar7240-ddr-controller";
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reg = <0x18000000 0x100>;
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#qca,ddr-wb-channel-cells = <1>;
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};
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...
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interrupt-controller {
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...
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qca,ddr-wb-channel-interrupts = <2>, <3>, <4>, <5>;
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qca,ddr-wb-channels = <&ddr_ctrl 3>, <&ddr_ctrl 2>,
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<&ddr_ctrl 0>, <&ddr_ctrl 1>;
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};
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