Re: [PATCH v2 12/15] dt: bindings: Add lane-polarity property to endpoint nodes
Sakari Ailus sakari.ai...@iki.fi wrote on Thu [2015-Mar-26 00:57:36 +0200]: Add lane-polarity property to endpoint nodes. This essentially tells that the order of the differential signal wires is inverted. Signed-off-by: Sakari Ailus sakari.ai...@iki.fi Acked-by: Laurent Pinchart laurent.pinch...@ideasonboard.com --- Documentation/devicetree/bindings/media/video-interfaces.txt |6 ++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/media/video-interfaces.txt b/Documentation/devicetree/bindings/media/video-interfaces.txt index 571b4c6..9cd2a36 100644 --- a/Documentation/devicetree/bindings/media/video-interfaces.txt +++ b/Documentation/devicetree/bindings/media/video-interfaces.txt @@ -106,6 +106,12 @@ Optional endpoint properties - link-frequencies: Allowed data bus frequencies. For MIPI CSI-2, for instance, this is the actual frequency of the bus, not bits per clock per lane value. An array of 64-bit unsigned integers. +- lane-polarities: an array of polarities of the lanes starting from the clock + lane and followed by the data lanes in the same order as in data-lanes. + Valid values are 0 (normal) and 1 (inverted). The length of the array + should be the combined length of data-lanes and clock-lanes properties. + If the lane-polarities property is omitted, the value must be interpreted + as 0 (normal). This property is valid for serial busses only. I am interested in this functionality. But I do have the following question. If the lane-polarities property is not specified, shouldn't the relevant struct member (bus-lane_polarities[i]) be set to 0? Regards, Benoit Example -- 1.7.10.4 -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH v2 12/15] dt: bindings: Add lane-polarity property to endpoint nodes
Hi Benoit, On Fri, Apr 24, 2015 at 02:41:00PM -0500, Benoit Parrot wrote: Sakari Ailus sakari.ai...@iki.fi wrote on Thu [2015-Mar-26 00:57:36 +0200]: Add lane-polarity property to endpoint nodes. This essentially tells that the order of the differential signal wires is inverted. Signed-off-by: Sakari Ailus sakari.ai...@iki.fi Acked-by: Laurent Pinchart laurent.pinch...@ideasonboard.com --- Documentation/devicetree/bindings/media/video-interfaces.txt |6 ++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/media/video-interfaces.txt b/Documentation/devicetree/bindings/media/video-interfaces.txt index 571b4c6..9cd2a36 100644 --- a/Documentation/devicetree/bindings/media/video-interfaces.txt +++ b/Documentation/devicetree/bindings/media/video-interfaces.txt @@ -106,6 +106,12 @@ Optional endpoint properties - link-frequencies: Allowed data bus frequencies. For MIPI CSI-2, for instance, this is the actual frequency of the bus, not bits per clock per lane value. An array of 64-bit unsigned integers. +- lane-polarities: an array of polarities of the lanes starting from the clock + lane and followed by the data lanes in the same order as in data-lanes. + Valid values are 0 (normal) and 1 (inverted). The length of the array + should be the combined length of data-lanes and clock-lanes properties. + If the lane-polarities property is omitted, the value must be interpreted + as 0 (normal). This property is valid for serial busses only. I am interested in this functionality. But I do have the following question. If the lane-polarities property is not specified, shouldn't the relevant struct member (bus-lane_polarities[i]) be set to 0? This is done in the caller function; endpoint-bus is zeroed in v4l2_of_parse_endpoint(). I believe reading rest of the properties relies on the same. -- Kind regards, Sakari Ailus e-mail: sakari.ai...@iki.fi XMPP: sai...@retiisi.org.uk -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH v2 12/15] dt: bindings: Add lane-polarity property to endpoint nodes
Sakari Ailus sakari.ai...@iki.fi wrote on Fri [2015-Apr-24 22:49:33 +0300]: Hi Benoit, On Fri, Apr 24, 2015 at 02:41:00PM -0500, Benoit Parrot wrote: Sakari Ailus sakari.ai...@iki.fi wrote on Thu [2015-Mar-26 00:57:36 +0200]: Add lane-polarity property to endpoint nodes. This essentially tells that the order of the differential signal wires is inverted. Signed-off-by: Sakari Ailus sakari.ai...@iki.fi Acked-by: Laurent Pinchart laurent.pinch...@ideasonboard.com --- Documentation/devicetree/bindings/media/video-interfaces.txt |6 ++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/media/video-interfaces.txt b/Documentation/devicetree/bindings/media/video-interfaces.txt index 571b4c6..9cd2a36 100644 --- a/Documentation/devicetree/bindings/media/video-interfaces.txt +++ b/Documentation/devicetree/bindings/media/video-interfaces.txt @@ -106,6 +106,12 @@ Optional endpoint properties - link-frequencies: Allowed data bus frequencies. For MIPI CSI-2, for instance, this is the actual frequency of the bus, not bits per clock per lane value. An array of 64-bit unsigned integers. +- lane-polarities: an array of polarities of the lanes starting from the clock + lane and followed by the data lanes in the same order as in data-lanes. + Valid values are 0 (normal) and 1 (inverted). The length of the array + should be the combined length of data-lanes and clock-lanes properties. + If the lane-polarities property is omitted, the value must be interpreted + as 0 (normal). This property is valid for serial busses only. I am interested in this functionality. But I do have the following question. If the lane-polarities property is not specified, shouldn't the relevant struct member (bus-lane_polarities[i]) be set to 0? This is done in the caller function; endpoint-bus is zeroed in v4l2_of_parse_endpoint(). I believe reading rest of the properties relies on the same. Dang, missed that. Sorry for the noise. -- Kind regards, Sakari Ailus e-mail: sakari.ai...@iki.fi XMPP: sai...@retiisi.org.uk -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH v2 12/15] dt: bindings: Add lane-polarity property to endpoint nodes
Add lane-polarity property to endpoint nodes. This essentially tells that the order of the differential signal wires is inverted. Signed-off-by: Sakari Ailus sakari.ai...@iki.fi Acked-by: Laurent Pinchart laurent.pinch...@ideasonboard.com --- Documentation/devicetree/bindings/media/video-interfaces.txt |6 ++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/media/video-interfaces.txt b/Documentation/devicetree/bindings/media/video-interfaces.txt index 571b4c6..9cd2a36 100644 --- a/Documentation/devicetree/bindings/media/video-interfaces.txt +++ b/Documentation/devicetree/bindings/media/video-interfaces.txt @@ -106,6 +106,12 @@ Optional endpoint properties - link-frequencies: Allowed data bus frequencies. For MIPI CSI-2, for instance, this is the actual frequency of the bus, not bits per clock per lane value. An array of 64-bit unsigned integers. +- lane-polarities: an array of polarities of the lanes starting from the clock + lane and followed by the data lanes in the same order as in data-lanes. + Valid values are 0 (normal) and 1 (inverted). The length of the array + should be the combined length of data-lanes and clock-lanes properties. + If the lane-polarities property is omitted, the value must be interpreted + as 0 (normal). This property is valid for serial busses only. Example -- 1.7.10.4 -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
