[PATCH 1/4 v2] ata: Add DT bindings for Faraday Technology FTIDE010

[PATCH 1/4 v2] ata: Add DT bindings for Faraday Technology FTIDE010

[Linus Walleij]

This adds device tree bindings for the Faraday Technology
FTIDE010 found in the Storlink/Storm/Cortina Systems Gemini SoC.

I am not 100% sure that this part is from Faraday Technology but
a lot points in that direction:

- A later IDE interface called FTIDE020 exist and share some
  properties.

- The SATA bridge has the same Built In Self Test (BIST) that the
  Faraday FTSATA100 seems to have, and it has version number 0100
  in the device ID register, so this is very likely a FTSATA100
  bundled with the FTIDE010.

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>
---
ChangeLog v1->v2:
- Cut the timings defintions from the device tree. Hard-code
  it in the driver instead, keeping the nice layout and
  configurability by making it easy to tweak the timings
  in the code.
- Fix up some confused references to 50 MHz in 66 MHz
  properties.

Greentime: I think this may be interesting to you since the
FTIDE020 will need the same bindings so we can probably
just reuse them and maybe make the parser a library if you
want to upstream the FTIDE020.

Faraday people: I do not have it from a source that this
hardware is really FTIDE010 but I would be VERY surprised
if it is not. U-Boot has an FTIDE020 IDE controller
synthesized in the Andestech platform, and it has a similar
yet different register layout, featuring similar timing
set-ups:
http://git.denx.de/?p=u-boot.git;a=blob;f=drivers/block/ftide020.h
http://git.denx.de/?p=u-boot.git;a=blob;f=drivers/block/ftide020.c
---
 .../devicetree/bindings/ata/faraday,ftide010.txt   | 38 ++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/ata/faraday,ftide010.txt

diff --git a/Documentation/devicetree/bindings/ata/faraday,ftide010.txt b/Documentation/devicetree/bindings/ata/faraday,ftide010.txt
new file mode 100644
index 000000000000..a0c64a29104d
--- /dev/null
+++ b/Documentation/devicetree/bindings/ata/faraday,ftide010.txt
@@ -0,0 +1,38 @@
+* Faraday Technology FTIDE010 PATA controller
+
+This controller is the first Faraday IDE interface block, used in the
+StorLink SL2312 and SL3516, later known as the Cortina Systems Gemini
+platform. The controller can do PIO modes 0 through 4, Multi-word DMA
+(MWDM)modes 0 through 2 and Ultra DMA modes 0 through 6.
+
+On the Gemini platform, this PATA block is accompanied by a PATA to
+SATA bridge in order to support SATA. This is why a phandle to that
+controller is compulsory on that platform.
+
+The timing properties are unique per-SoC, not per-board.
+
+Required properties:
+- compatible: should be one of
+  "cortina,gemini-pata", "faraday,ftide010"
+  "faraday,ftide010"
+- interrupts: interrupt for the block
+- reg: registers and size for the block
+
+Optional properties:
+- clocks: a SoC clock running the peripheral.
+- clock-names: should be set to "PCLK" for the peripheral clock.
+
+Required properties for "cortina,gemini-pata" compatible:
+- sata: a phande to the Gemini PATA to SATA bridge, see
+  cortina,gemini-sata-bridge.txt for details.
+
+Example:
+
+ata@63000000 {
+	compatible = "cortina,gemini-pata", "faraday,ftide010";
+	reg = <0x63000000 0x100>;
+	interrupts = <4 IRQ_TYPE_EDGE_RISING>;
+	clocks = <&gcc GEMINI_CLK_GATE_IDE>;
+	clock-names = "PCLK";
+	sata = <&sata>;
+};
-- 
2.9.4

[PATCH 2/4 v2] ata: Add DT bindings for the Gemini SATA bridge

[Linus Walleij]

This adds device tree bindings for the Cortina Systems Gemini
PATA to SATA bridge.

Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: John Feng-Hsin Chiang <john453-w0jeGXs5+AWXmMXjJBpWqg@public.gmane.org>
Cc: Greentime Hu <green.hu-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Acked-by: Hans Ulli Kroll <ulli.kroll-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org>
Acked-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Signed-off-by: Linus Walleij <linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
---
ChangeLog v1->v2:
- Fix ata0 misspelled as ata1 in one place.
---
 .../bindings/ata/cortina,gemini-sata-bridge.txt    | 55 ++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/ata/cortina,gemini-sata-bridge.txt

diff --git a/Documentation/devicetree/bindings/ata/cortina,gemini-sata-bridge.txt b/Documentation/devicetree/bindings/ata/cortina,gemini-sata-bridge.txt
new file mode 100644
index 000000000000..1c3d3cc70051
--- /dev/null
+++ b/Documentation/devicetree/bindings/ata/cortina,gemini-sata-bridge.txt
@@ -0,0 +1,55 @@
+* 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;
+};
-- 
2.9.4

--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html