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Message-ID: <0a86907642a97e5bd880f69299664232fcffaf9d.1424181053.git.stathis.voukelatos@linn.co.uk> Date: Tue, 17 Feb 2015 14:03:31 +0000 From: Stathis Voukelatos <stathis.voukelatos@...n.co.uk> To: <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>, <netdev@...r.kernel.org> CC: <abrestic@...omium.org>, Stathis Voukelatos <stathis.voukelatos@...n.co.uk> Subject: [PATCH v2 1/3] Ethernet packet sniffer: Device tree binding and vendor prefix Signed-off-by: Stathis Voukelatos <stathis.voukelatos@...n.co.uk> --- .../bindings/net/linn-ether-packet-sniffer.txt | 42 ++++++++++++++++++++++ .../devicetree/bindings/vendor-prefixes.txt | 1 + 2 files changed, 43 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/linn-ether-packet-sniffer.txt diff --git a/Documentation/devicetree/bindings/net/linn-ether-packet-sniffer.txt b/Documentation/devicetree/bindings/net/linn-ether-packet-sniffer.txt new file mode 100644 index 0000000..74bac5e --- /dev/null +++ b/Documentation/devicetree/bindings/net/linn-ether-packet-sniffer.txt @@ -0,0 +1,42 @@ +* Linn Products Ethernet Packet Sniffer +The module allows Ethernet packets to be parsed, matched against +a user-defined pattern and timestamped. It sits between a 100M +Ethernet MAC and PHY and is completely passive with respect to +Ethernet frames. +Matched packet bytes and timestamp values are returned through a +FIFO. Timestamps are provided to the module through an externally +generated Gray-encoded counter. + +Required properties: +- compatible : must be "linn,eth-sniffer" +- reg : physical addresses and sizes of registers. Must contain 3 entries: + - registers memory space + - TX command string memory + - RX command string memory +- reg-names : must contain the following 3 entries: + "regs", "tx-ram", "rx-ram" +- interrupts : sniffer interrupt specifier +- clocks : specify the system clock for the peripheral and + the enable clock for the timestamp counter +- clock-names : must contain the "sys" and "tstamp" entries +- fifo-block-words : number of words in one data FIFO entry +- tstamp-hz : frequency of the timestamp counter +- tstamp-shift : shift value for the timestamp cyclecounter struct +- tstamp-bits : width in bits of the timestamp counter + +Example: + +sniffer@...4a000 { + compatible = "linn,eth-sniffer"; + reg = <0x1814a000 0x100>, <0x1814a400 0x400>, + <0x1814a800 0x400>; + reg-names = "regs", "tx-ram", "rx-ram"; + interrupts = <GIC_SHARED 58 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&clk_core CLK_AUDIO>, + <&cr_periph SYS_CLK_EVENT_TIMER>; + clock-names = "sys", "tstamp"; + fifo-block-words = <4>; + tstamp-hz = <52000000>; + tstamp-shift = <27>; + tstamp-bits = <30>; +}; diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt index d443279..891c224 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.txt +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt @@ -90,6 +90,7 @@ lacie LaCie lantiq Lantiq Semiconductor lenovo Lenovo Group Ltd. lg LG Corporation +linn Linn Products Ltd. linux Linux-specific binding lsi LSI Corp. (LSI Logic) lltc Linear Technology Corporation -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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