linux-kernel - Re: [PATCH RESEND v10 2/4] Documentation: Add APM X-Gene SoC 15Gbps Multi-purpose PHY driver binding documentation

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Message-ID: <530C9FF1.3060409@ti.com>
Date:	Tue, 25 Feb 2014 19:21:45 +0530
From:	Kishon Vijay Abraham I <kishon@...com>
To:	Loc Ho <lho@....com>, <tj@...nel.org>
CC:	<olof@...om.net>, <arnd@...db.de>, <linux-kernel@...r.kernel.org>,
	<devicetree@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <ddutile@...hat.com>,
	<jcm@...hat.com>, <patches@....com>, Tuan Phan <tphan@....com>,
	Suman Tripathi <stripathi@....com>
Subject: Re: [PATCH RESEND v10 2/4] Documentation: Add APM X-Gene SoC 15Gbps
 Multi-purpose PHY driver binding documentation

On Tuesday 25 February 2014 11:44 AM, Loc Ho wrote:

missing commit log..

-Kishon
> Signed-off-by: Loc Ho <lho@....com>
> Signed-off-by: Tuan Phan <tphan@....com>
> Signed-off-by: Suman Tripathi <stripathi@....com>
> ---
>  .../devicetree/bindings/phy/apm-xgene-phy.txt      |   79 ++++++++++++++++++++
>  1 files changed, 79 insertions(+), 0 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/phy/apm-xgene-phy.txt
> 
> diff --git a/Documentation/devicetree/bindings/phy/apm-xgene-phy.txt b/Documentation/devicetree/bindings/phy/apm-xgene-phy.txt
> new file mode 100644
> index 0000000..5f3a65a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/apm-xgene-phy.txt
> @@ -0,0 +1,79 @@
> +* APM X-Gene 15Gbps Multi-purpose PHY nodes
> +
> +PHY nodes are defined to describe on-chip 15Gbps Multi-purpose PHY. Each
> +PHY (pair of lanes) has its own node.
> +
> +Required properties:
> +- compatible		: Shall be "apm,xgene-phy".
> +- reg			: PHY memory resource is the SDS PHY access resource.
> +- #phy-cells		: Shall be 1 as it expects one argument for setting
> +			  the mode of the PHY. Possible values are 0 (SATA),
> +			  1 (SGMII), 2 (PCIe), 3 (USB), and 4 (XFI).
> +
> +Optional properties:
> +- status		: Shall be "ok" if enabled or "disabled" if disabled.
> +			  Default is "ok".
> +- clocks		: Reference to the clock entry.
> +- apm,tx-eye-tuning	: Manual control to fine tune the capture of the serial
> +			  bit lines from the automatic calibrated position.
> +			  Two set of 3-tuple setting for each (up to 3)
> +			  supported link speed on the host. Range from 0 to
> +			  127 in unit of one bit period. Default is 10.
> +- apm,tx-eye-direction	: Eye tuning manual control direction. 0 means sample
> +			  data earlier than the nominal sampling point. 1 means
> +			  sample data later than the nominal sampling point.
> +			  Two set of 3-tuple setting for each (up to 3)
> +			  supported link speed on the host. Default is 0.
> +- apm,tx-boost-gain	: Frequency boost AC (LSB 3-bit) and DC (2-bit)
> +			  gain control. Two set of 3-tuple setting for each
> +			  (up to 3) supported link speed on the host. Range is
> +			  between 0 to 31 in unit of dB. Default is 3.
> +- apm,tx-amplitude	: Amplitude control. Two set of 3-tuple setting for
> +			  each (up to 3) supported link speed on the host.
> +			  Range is between 0 to 199500 in unit of uV.
> +			  Default is 199500 uV.
> +- apm,tx-pre-cursor1	: 1st pre-cursor emphasis taps control. Two set of
> +			  3-tuple setting for each (up to 3) supported link
> +			  speed on the host. Range is 0 to 273000 in unit of
> +			  uV. Default is 0.
> +- apm,tx-pre-cursor2	: 2st pre-cursor emphasis taps control. Two set of
> +			  3-tuple setting for each (up to 3) supported link
> +			  speed on the host. Range is 0 to 127400 in unit uV.
> +			  Default is 0x0.
> +- apm,tx-post-cursor	: Post-cursor emphasis taps control. Two set of
> +			  3-tuple setting for Gen1, Gen2, and Gen3. Range is
> +			  between 0 to 0x1f in unit of 18.2mV. Default is 0xf.
> +- apm,tx-speed		: Tx operating speed. One set of 3-tuple for each
> +			  supported link speed on the host.
> +			   0 = 1-2Gbps
> +			   1 = 2-4Gbps (1st tuple default)
> +			   2 = 4-8Gbps
> +			   3 = 8-15Gbps (2nd tuple default)
> +			   4 = 2.5-4Gbps
> +			   5 = 4-5Gbps
> +			   6 = 5-6Gbps
> +			   7 = 6-16Gbps (3rd tuple default)
> +
> +NOTE: PHY override parameters are board specific setting.
> +
> +Example:
> +		phy1: phy@...1a000 {
> +			compatible = "apm,xgene-phy";
> +			reg = <0x0 0x1f21a000 0x0 0x100>;
> +			#phy-cells = <1>;
> +			status = "disabled";
> +		};
> +
> +		phy2: phy@...2a000 {
> +			compatible = "apm,xgene-phy";
> +			reg = <0x0 0x1f22a000 0x0 0x100>;
> +			#phy-cells = <1>;
> +			status = "ok";
> +		};
> +
> +		phy3: phy@...3a000 {
> +			compatible = "apm,xgene-phy";
> +			reg = <0x0 0x1f23a000 0x0 0x100>;
> +			#phy-cells = <1>;
> +			status = "ok";
> +		};
> 

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