On 4/15/19 2:44 PM, Marco Felsch wrote: > Some connectors no matter if in- or output supports only a limited > range of tv norms. It doesn't matter if the hardware behind that > connector supports more than the listed formats since the users are > restriced by a label e.g. to plug only a camera into this connector > which uses the PAL format. For S-Video and Composite connectors there are really just two formats to consider: 50 and 60 Hz. I.e. there is no difference between PAL and SECAM. Only for tuners/modulators does this matter. So it is a good idea to add TVNORM_525_60, TVNORM_625_50 to tvnorms.h. In the various bindings examples I would recommend that you use TVNORM_525_60 or TVNORM_625_50 rather than e.g. PAL_M since that's what you would use in practice for Composite/S-Video. Regards, Hans > > This patch adds the capability to describe such limitation within the > firmware. There are no format restrictions if the property isn't > present, so it's completely backward compatible. > > Signed-off-by: Marco Felsch <m.felsch@xxxxxxxxxxxxxx> > Reviewed-by: Rob Herring <robh@xxxxxxxxxx> > --- > [1] https://patchwork.kernel.org/cover/10794703/ > > v6: > - tvnorms.h: use tabs instead of spaces > - tvnorms.h: add TVNORM_PAL and TVNORM_SECAM > - tvnorms.h: drop rarely used TVNORM_ATSC_* norms > > v2-v4: > - nothing since the patch was squashed from series [1] into this > series. > > .../display/connector/analog-tv-connector.txt | 4 ++ > include/dt-bindings/media/tvnorms.h | 56 +++++++++++++++++++ > 2 files changed, 60 insertions(+) > create mode 100644 include/dt-bindings/media/tvnorms.h > > diff --git a/Documentation/devicetree/bindings/display/connector/analog-tv-connector.txt b/Documentation/devicetree/bindings/display/connector/analog-tv-connector.txt > index 0c0970c210ab..346f8937a0b7 100644 > --- a/Documentation/devicetree/bindings/display/connector/analog-tv-connector.txt > +++ b/Documentation/devicetree/bindings/display/connector/analog-tv-connector.txt > @@ -6,6 +6,9 @@ Required properties: > > Optional properties: > - label: a symbolic name for the connector > +- tvnorms: limit the supported tv norms on a connector to the given ones else > + all tv norms are allowed. Possible video standards are defined in > + include/dt-bindings/media/tvnorms.h. > > Required nodes: > - Video port for TV input > @@ -16,6 +19,7 @@ Example > tv: connector { > compatible = "composite-video-connector"; > label = "tv"; > + tvnorms = <(TVNORM_PAL_M | TVNORM_NTSC_M)>; > > port { > tv_connector_in: endpoint { > diff --git a/include/dt-bindings/media/tvnorms.h b/include/dt-bindings/media/tvnorms.h > new file mode 100644 > index 000000000000..058ab8414145 > --- /dev/null > +++ b/include/dt-bindings/media/tvnorms.h > @@ -0,0 +1,56 @@ > +/* SPDX-License-Identifier: GPL-2.0-only or X11 */ > +/* > + * Copyright 2019 Pengutronix, Marco Felsch <kernel@xxxxxxxxxxxxxx> > + */ > + > +#ifndef _DT_BINDINGS_MEDIA_TVNORMS_H > +#define _DT_BINDINGS_MEDIA_TVNORMS_H > + > +/* one bit for each */ > +#define TVNORM_PAL_B 0x00000001 > +#define TVNORM_PAL_B1 0x00000002 > +#define TVNORM_PAL_G 0x00000004 > +#define TVNORM_PAL_H 0x00000008 > +#define TVNORM_PAL_I 0x00000010 > +#define TVNORM_PAL_D 0x00000020 > +#define TVNORM_PAL_D1 0x00000040 > +#define TVNORM_PAL_K 0x00000080 > + > +#define TVNORM_PAL (TVNORM_PAL_B | \ > + TVNORM_PAL_B1 | \ > + TVNORM_PAL_G | \ > + TVNORM_PAL_H | \ > + TVNORM_PAL_I | \ > + TVNORM_PAL_D | \ > + TVNORM_PAL_D1 | \ > + TVNORM_PAL_K) > + > +#define TVNORM_PAL_M 0x00000100 > +#define TVNORM_PAL_N 0x00000200 > +#define TVNORM_PAL_Nc 0x00000400 > +#define TVNORM_PAL_60 0x00000800 > + > +#define TVNORM_NTSC_M 0x00001000 /* BTSC */ > +#define TVNORM_NTSC_M_JP 0x00002000 /* EIA-J */ > +#define TVNORM_NTSC_443 0x00004000 > +#define TVNORM_NTSC_M_KR 0x00008000 /* FM A2 */ > + > +#define TVNORM_SECAM_B 0x00010000 > +#define TVNORM_SECAM_D 0x00020000 > +#define TVNORM_SECAM_G 0x00040000 > +#define TVNORM_SECAM_H 0x00080000 > +#define TVNORM_SECAM_K 0x00100000 > +#define TVNORM_SECAM_K1 0x00200000 > +#define TVNORM_SECAM_L 0x00400000 > +#define TVNORM_SECAM_LC 0x00800000 > + > +#define TVNORM_SECAM (TVNORM_SECAM_B | \ > + TVNORM_SECAM_D | \ > + TVNORM_SECAM_G | \ > + TVNORM_SECAM_H | \ > + TVNORM_SECAM_K | \ > + TVNORM_SECAM_K1 | \ > + TVNORM_SECAM_L | \ > + TVNORM_SECAM_LC) > + > +#endif /* _DT_BINDINGS_MEDIA_TVNORMS_H */ >
