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-rw-r--r--Documentation/devicetree/bindings/spi/spi-slave-mt27xx.txt33
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diff --git a/Documentation/devicetree/bindings/spi/spi-slave-mt27xx.txt b/Documentation/devicetree/bindings/spi/spi-slave-mt27xx.txt
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-Binding for MTK SPI Slave controller
-
-Required properties:
-- compatible: should be one of the following.
- - mediatek,mt2712-spi-slave: for mt2712 platforms
- - mediatek,mt8195-spi-slave: for mt8195 platforms
-- reg: Address and length of the register set for the device.
-- interrupts: Should contain spi interrupt.
-- clocks: phandles to input clocks.
- It's clock gate, and should be <&infracfg CLK_INFRA_AO_SPI1>.
-- clock-names: should be "spi" for the clock gate.
-
-Optional properties:
-- assigned-clocks: it's mux clock, should be <&topckgen CLK_TOP_SPISLV_SEL>.
-- assigned-clock-parents: parent of mux clock.
- It's PLL, and should be one of the following.
- - <&topckgen CLK_TOP_UNIVPLL1_D2>: specify parent clock 312MHZ.
- It's the default one.
- - <&topckgen CLK_TOP_UNIVPLL1_D4>: specify parent clock 156MHZ.
- - <&topckgen CLK_TOP_UNIVPLL2_D4>: specify parent clock 104MHZ.
- - <&topckgen CLK_TOP_UNIVPLL1_D8>: specify parent clock 78MHZ.
-
-Example:
-- SoC Specific Portion:
-spis1: spi@10013000 {
- compatible = "mediatek,mt2712-spi-slave";
- reg = <0 0x10013000 0 0x100>;
- interrupts = <GIC_SPI 283 IRQ_TYPE_LEVEL_LOW>;
- clocks = <&infracfg CLK_INFRA_AO_SPI1>;
- clock-names = "spi";
- assigned-clocks = <&topckgen CLK_TOP_SPISLV_SEL>;
- assigned-clock-parents = <&topckgen CLK_TOP_UNIVPLL1_D2>;
-};