mirror of
https://github.com/torvalds/linux.git
synced 2024-12-11 13:41:55 +00:00
3420fdface
This adds device tree bindings for the Cortina Systems Gemini PATA to SATA bridge. Cc: devicetree@vger.kernel.org Cc: John Feng-Hsin Chiang <john453@faraday-tech.com> Cc: Greentime Hu <green.hu@gmail.com> Acked-by: Hans Ulli Kroll <ulli.kroll@googlemail.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Tejun Heo <tj@kernel.org>
56 lines
2.0 KiB
Plaintext
56 lines
2.0 KiB
Plaintext
* 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;
|
|
};
|