From: Luca Ceresoli <luca@lucaceresoli.net>
To: Vishal Sagar <vsagar@xilinx.com>,
Sakari Ailus <sakari.ailus@linux.intel.com>,
Vishal Sagar <vishal.sagar@xilinx.com>
Cc: Hyun Kwon <hyunk@xilinx.com>,
"laurent.pinchart@ideasonboard.com"
<laurent.pinchart@ideasonboard.com>,
"mchehab@kernel.org" <mchehab@kernel.org>,
"robh+dt@kernel.org" <robh+dt@kernel.org>,
"mark.rutland@arm.com" <mark.rutland@arm.com>,
Michal Simek <michals@xilinx.com>,
"linux-media@vger.kernel.org" <linux-media@vger.kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"hans.verkuil@cisco.com" <hans.verkuil@cisco.com>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Dinesh Kumar <dineshk@xilinx.com>,
Sandip Kothari <sandipk@xilinx.com>
Subject: Re: [PATCH v6 1/2] media: dt-bindings: media: xilinx: Add Xilinx MIPI CSI-2 Rx Subsystem
Date: Tue, 12 Mar 2019 16:03:19 +0100 [thread overview]
Message-ID: <ff914561-a021-9405-8b26-11d4a5cc605d@lucaceresoli.net> (raw)
In-Reply-To: <DM5PR02MB2713DB568A4AD713BE3B2621A7490@DM5PR02MB2713.namprd02.prod.outlook.com>
Hi Vishal, Sakari,
On 12/03/19 15:45, Vishal Sagar wrote:
>>> +- xlnx,en-csi-v2-0: Present if CSI v2 is enabled in IP configuration.
>>> +- xlnx,en-vcx: When present, there are maximum 16 virtual channels, else
>>> + only 4. This is present only if xlnx,en-csi-v2-0 is present.
>>> +- xlnx,en-active-lanes: present if the number of active lanes can be
>>> + reconfigured at runtime in the Protocol Configuration Register.
>>> + If present, the V4L2_CID_XILINX_MIPICSISS_ACT_LANES control is added.
>>> + Otherwise all lanes, as set in IP configuration, are always active.
>>
>> The bindings document hardware, therefore a V4L2 control name doesn't
>> belong here.
>>
> Ok. I will remove this and revert to original description as below -
>
> xlnx,en-active-lanes: present if the number of active lanes can be
> re-configured at runtime in the Protocol Configuration Register
I'm to blame here as I suggested that text. However I still find the
original wording was ambiguous: my initial reading of it was close to
the opposite of the intended meaning. xlnx,en-active-lanes means "a
register exists to configure the active lanes at runtime" and I just
care that this is stated clearly and unambiguously.
If we cannot mention a control name here, why not just dropping it:
- xlnx,en-active-lanes: present if the number of active lanes can be
reconfigured at runtime in the Protocol Configuration Register.
Otherwise all lanes are always active.
--
Luca
next prev parent reply other threads:[~2019-03-12 15:03 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-12 4:35 [PATCH v6 0/2] Add support for Xilinx CSI2 Receiver Subsystem Vishal Sagar
2019-03-12 4:35 ` [PATCH v6 1/2] media: dt-bindings: media: xilinx: Add Xilinx MIPI CSI-2 Rx Subsystem Vishal Sagar
2019-03-12 10:21 ` Sakari Ailus
2019-03-12 14:45 ` Vishal Sagar
2019-03-12 15:03 ` Luca Ceresoli [this message]
2019-03-22 15:55 ` Sakari Ailus
2019-03-22 16:02 ` Jacopo Mondi
2019-03-12 4:35 ` [PATCH v6 2/2] media: v4l: xilinx: Add Xilinx MIPI CSI-2 Rx Subsystem driver Vishal Sagar
2019-03-12 11:00 ` [PATCH v6 0/2] Add support for Xilinx CSI2 Receiver Subsystem Eugen.Hristev
2019-03-12 14:44 ` Vishal Sagar
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