FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/spi/spi-slave-mt27xx.txt

     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>;
    };

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