Kernel-4.18.0-80.el8_cortina,gemini-sata-bridge

• Cortina Systems Gemini SATA Bridge

The Gemini SATA bridge in a SoC-internal PATA to SATA bridge that
takes two Faraday Technology FTIDE010 PATA controllers and bridges
them in different configurations to two SATA ports.

Required properties:

• compatible: should be
  “cortina,gemini-sata-bridge”
• reg: registers and size for the block
• resets: phandles to the reset lines for both SATA bridges
• reset-names: must be “sata0”, “sata1”
• clocks: phandles to the compulsory peripheral clocks
• clock-names: must be “SATA0_PCLK”, “SATA1_PCLK”
• syscon: a phandle to the global Gemini system controller
• cortina,gemini-ata-muxmode: tell the desired multiplexing mode for
  the ATA controller and SATA bridges. Values 0..3:
  Mode 0: ata0 master <-> sata0

      ata1 master <-> sata1
      ata0 slave interface brought out on IDE pads
  

  Mode 1: ata0 master <-> sata0

      ata1 master <-> sata1
      ata1 slave interface brought out on IDE pads
  

  Mode 2: ata1 master <-> sata1

      ata1 slave  <-> sata0
      ata0 master and slave interfaces brought out
           on IDE pads
  

  Mode 3: ata0 master <-> sata0

      ata0 slave  <-> sata1
      ata1 master and slave interfaces brought out
           on IDE pads
  

Optional boolean properties:

• cortina,gemini-enable-ide-pins: enables the PATA to IDE connection.
  The muxmode setting decides whether ATA0 or ATA1 is brought out,
  and whether master, slave or both interfaces get brought out.
• cortina,gemini-enable-sata-bridge: enables the PATA to SATA bridge
  inside the Gemnini SoC. The Muxmode decides what PATA blocks will
  be muxed out and how.

Example:

sata: sata@46000000 {
compatible = “cortina,gemini-sata-bridge”;
reg = <0x46000000 0x100>;
resets = <&rcon 26>, <&rcon 27>;
reset-names = “sata0”, “sata1”;
clocks = <&gcc GEMINI_CLK_GATE_SATA0>,
<&gcc GEMINI_CLK_GATE_SATA1>;
clock-names = “SATA0_PCLK”, “SATA1_PCLK”;
syscon = <&syscon>;
cortina,gemini-ata-muxmode = <3>;
cortina,gemini-enable-ide-pins;
cortina,gemini-enable-sata-bridge;
};