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author | Linus Walleij <linus.walleij@linaro.org> | 2017-01-21 13:38:22 +0100 |
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committer | Linus Walleij <linus.walleij@linaro.org> | 2017-03-12 12:17:53 +0100 |
commit | d5651944205c5cba8a5813b66119bf776501df1f (patch) | |
tree | 4d365c177e1a378a504a5f5a60ed23aa601db507 /Documentation/devicetree/bindings/arm/gemini.txt | |
parent | c1ae3cfa0e89fa1a7ecc4c99031f5e9ae99d9201 (diff) | |
download | linux-stable-d5651944205c5cba8a5813b66119bf776501df1f.tar.gz linux-stable-d5651944205c5cba8a5813b66119bf776501df1f.tar.bz2 linux-stable-d5651944205c5cba8a5813b66119bf776501df1f.zip |
ARM: dts: add top-level DT bindings for Cortina Gemini
This adds the top level SoC bindings for Cortina systems Gemini
platforms.
Cc: Janos Laube <janos.dev@gmail.com>
Cc: Paulius Zaleckas <paulius.zaleckas@gmail.com>
Cc: Hans Ulli Kroll <ulli.kroll@googlemail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: devicetree@vger.kernel.org
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings/arm/gemini.txt')
-rw-r--r-- | Documentation/devicetree/bindings/arm/gemini.txt | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/gemini.txt b/Documentation/devicetree/bindings/arm/gemini.txt new file mode 100644 index 000000000000..0041eb031116 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/gemini.txt @@ -0,0 +1,86 @@ +Cortina systems Gemini platforms + +The Gemini SoC is the project name for an ARMv4 FA525-based SoC originally +produced by Storlink Semiconductor around 2005. The company was renamed +later renamed Storm Semiconductor. The chip product name is Storlink SL3516. +It was derived from earlier products from Storm named SL3316 (Centroid) and +SL3512 (Bulverde). + +Storm Semiconductor was acquired by Cortina Systems in 2008 and the SoC was +produced and used for NAS and similar usecases. In 2014 Cortina Systems was +in turn acquired by Inphi, who seem to have discontinued this product family. + +Many of the IP blocks used in the SoC comes from Faraday Technology. + +Required properties (in root node): + compatible = "cortina,gemini"; + +Required nodes: + +- soc: the SoC should be represented by a simple bus encompassing all the + onchip devices, this is referred to as the soc bus node. + +- syscon: the soc bus node must have a system controller node pointing to the + global control registers, with the compatible string + "cortina,gemini-syscon", "syscon"; + +- timer: the soc bus node must have a timer node pointing to the SoC timer + block, with the compatible string "cortina,gemini-timer" + See: clocksource/cortina,gemini-timer.txt + +- interrupt-controller: the sob bus node must have an interrupt controller + node pointing to the SoC interrupt controller block, with the compatible + string "cortina,gemini-interrupt-controller" + See interrupt-controller/cortina,gemini-interrupt-controller.txt + +Example: + +/ { + model = "Foo Gemini Machine"; + compatible = "cortina,gemini"; + #address-cells = <1>; + #size-cells = <1>; + + memory { + device_type = "memory"; + reg = <0x00000000 0x8000000>; + }; + + soc { + #address-cells = <1>; + #size-cells = <1>; + ranges; + compatible = "simple-bus"; + interrupt-parent = <&intcon>; + + syscon: syscon@40000000 { + compatible = "cortina,gemini-syscon", "syscon"; + reg = <0x40000000 0x1000>; + }; + + uart0: serial@42000000 { + compatible = "ns16550a"; + reg = <0x42000000 0x100>; + clock-frequency = <48000000>; + interrupts = <18 IRQ_TYPE_LEVEL_HIGH>; + reg-shift = <2>; + }; + + timer@43000000 { + compatible = "cortina,gemini-timer"; + reg = <0x43000000 0x1000>; + interrupt-parent = <&intcon>; + interrupts = <14 IRQ_TYPE_EDGE_FALLING>, /* Timer 1 */ + <15 IRQ_TYPE_EDGE_FALLING>, /* Timer 2 */ + <16 IRQ_TYPE_EDGE_FALLING>; /* Timer 3 */ + syscon = <&syscon>; + }; + + intcon: interrupt-controller@48000000 { + compatible = "cortina,gemini-interrupt-controller"; + reg = <0x48000000 0x1000>; + interrupt-controller; + #interrupt-cells = <2>; + }; + }; +}; |