From: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
To: David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Andrzej Hajda <a.hajda@samsung.com>
Cc: Fabrizio Castro <fabrizio.castro@bp.renesas.com>,
Simon Horman <horms@verge.net.au>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Magnus Damm <magnus.damm@gmail.com>,
Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
Peter Rosin <peda@axentia.se>,
dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,
linux-renesas-soc@vger.kernel.org,
Chris Paterson <Chris.Paterson2@renesas.com>,
Biju Das <biju.das@bp.renesas.com>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>,
Jacopo Mondi <jacopo+renesas@jmondi.org>
Subject: [PATCH 2/4] dt-bindings: display: bridge: Repurpose lvds-encoder
Date: Wed, 30 Oct 2019 13:43:32 +0000 [thread overview]
Message-ID: <1572443014-17335-3-git-send-email-fabrizio.castro@bp.renesas.com> (raw)
In-Reply-To: <1572443014-17335-1-git-send-email-fabrizio.castro@bp.renesas.com>
In an effort to repurpose lvds-encoder.c to also serve the
function of LVDS decoders, we ended up defining a new "generic"
compatible string, therefore adapt the dt-bindings to fit the
new purpose.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
---
.../bindings/display/bridge/lvds-codec.txt | 100 +++++++++++++++++++++
.../bindings/display/bridge/lvds-transmitter.txt | 66 --------------
2 files changed, 100 insertions(+), 66 deletions(-)
create mode 100644 Documentation/devicetree/bindings/display/bridge/lvds-codec.txt
delete mode 100644 Documentation/devicetree/bindings/display/bridge/lvds-transmitter.txt
diff --git a/Documentation/devicetree/bindings/display/bridge/lvds-codec.txt b/Documentation/devicetree/bindings/display/bridge/lvds-codec.txt
new file mode 100644
index 0000000..45fd81c
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/lvds-codec.txt
@@ -0,0 +1,100 @@
+Trasnparent LVDS encoders and LVDS decoders
+-------------------------------------------
+
+This binding supports transparent LVDS encoders and LVDS decoders that don't
+require any configuration.
+
+LVDS is a physical layer specification defined in ANSI/TIA/EIA-644-A. Multiple
+incompatible data link layers have been used over time to transmit image data
+to LVDS panels. This binding targets devices compatible with the following
+specifications only.
+
+[JEIDA] "Digital Interface Standards for Monitor", JEIDA-59-1999, February
+1999 (Version 1.0), Japan Electronic Industry Development Association (JEIDA)
+[LDI] "Open LVDS Display Interface", May 1999 (Version 0.95), National
+Semiconductor
+[VESA] "VESA Notebook Panel Standard", October 2007 (Version 1.0), Video
+Electronics Standards Association (VESA)
+
+Those devices have been marketed under the FPD-Link and FlatLink brand names
+among others.
+
+
+Required properties:
+
+- compatible: Must be "lvds-encoder" for LVDS encoders or "lvds-decoder" for
+ LVDS decoders.
+
+ Any encoder compatible with this generic binding, but with additional
+ properties not listed here, must list a device specific compatible first
+ followed by the generic compatible.
+
+Required nodes:
+
+This device has two video ports. Their connections are modeled using the OF
+graph bindings specified in Documentation/devicetree/bindings/graph.txt.
+
+For LVDS encoders:
+- Video port 0 for parallel input
+- Video port 1 for LVDS output
+
+For LVDS decoders:
+- Video port 0 for LVDS input
+- Video port 1 for parallel output
+
+
+LVDS encoder example
+--------------------
+
+lvds-encoder {
+ compatible = "lvds-encoder";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+
+ lvds_enc_in: endpoint {
+ remote-endpoint = <&display_out_rgb>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+
+ lvds_enc_out: endpoint {
+ remote-endpoint = <&lvds_panel_in>;
+ };
+ };
+ };
+};
+
+LVDS decoder example
+--------------------
+
+lvds-decoder {
+ compatible = "lvds-decoder";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+
+ lvds_dec_in: endpoint {
+ remote-endpoint = <&display_out_lvds>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+
+ lvds_dec_out: endpoint {
+ remote-endpoint = <&rgb_panel_in>;
+ };
+ };
+ };
+};
diff --git a/Documentation/devicetree/bindings/display/bridge/lvds-transmitter.txt b/Documentation/devicetree/bindings/display/bridge/lvds-transmitter.txt
deleted file mode 100644
index 60091db..0000000
--- a/Documentation/devicetree/bindings/display/bridge/lvds-transmitter.txt
+++ /dev/null
@@ -1,66 +0,0 @@
-Parallel to LVDS Encoder
-------------------------
-
-This binding supports the parallel to LVDS encoders that don't require any
-configuration.
-
-LVDS is a physical layer specification defined in ANSI/TIA/EIA-644-A. Multiple
-incompatible data link layers have been used over time to transmit image data
-to LVDS panels. This binding targets devices compatible with the following
-specifications only.
-
-[JEIDA] "Digital Interface Standards for Monitor", JEIDA-59-1999, February
-1999 (Version 1.0), Japan Electronic Industry Development Association (JEIDA)
-[LDI] "Open LVDS Display Interface", May 1999 (Version 0.95), National
-Semiconductor
-[VESA] "VESA Notebook Panel Standard", October 2007 (Version 1.0), Video
-Electronics Standards Association (VESA)
-
-Those devices have been marketed under the FPD-Link and FlatLink brand names
-among others.
-
-
-Required properties:
-
-- compatible: Must be "lvds-encoder"
-
- Any encoder compatible with this generic binding, but with additional
- properties not listed here, must list a device specific compatible first
- followed by this generic compatible.
-
-Required nodes:
-
-This device has two video ports. Their connections are modeled using the OF
-graph bindings specified in Documentation/devicetree/bindings/graph.txt.
-
-- Video port 0 for parallel input
-- Video port 1 for LVDS output
-
-
-Example
--------
-
-lvds-encoder {
- compatible = "lvds-encoder";
-
- ports {
- #address-cells = <1>;
- #size-cells = <0>;
-
- port@0 {
- reg = <0>;
-
- lvds_enc_in: endpoint {
- remote-endpoint = <&display_out_rgb>;
- };
- };
-
- port@1 {
- reg = <1>;
-
- lvds_enc_out: endpoint {
- remote-endpoint = <&lvds_panel_in>;
- };
- };
- };
-};
--
2.7.4
next prev parent reply other threads:[~2019-10-30 13:43 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-30 13:43 [PATCH 0/4] Add LCD panel support to iwg20d Fabrizio Castro
2019-10-30 13:43 ` [PATCH 1/4] drm/bridge: Repurpose lvds-encoder.c Fabrizio Castro
2019-11-04 9:18 ` Neil Armstrong
2019-11-04 10:42 ` Fabrizio Castro
2019-11-04 15:49 ` Neil Armstrong
2019-11-08 9:20 ` Geert Uytterhoeven
2019-11-08 12:13 ` Fabrizio Castro
2019-10-30 13:43 ` Fabrizio Castro [this message]
2019-11-04 9:17 ` [PATCH 2/4] dt-bindings: display: bridge: Repurpose lvds-encoder Neil Armstrong
2019-11-04 10:37 ` Fabrizio Castro
2019-10-30 13:43 ` [PATCH 3/4] ARM: dts: iwg20d-q7-common: Add LCD support Fabrizio Castro
2019-10-30 13:43 ` [PATCH 4/4] ARM: shmobile_defconfig: Enable support for panels from EDT Fabrizio Castro
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