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Date: Sun, 12 May 2024 01:00:53 +0530
From: Aradhya Bhatia <a-bhatia1@...com>
To: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>,
Jyri Sarha
<jyri.sarha@....fi>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>,
Neil Armstrong <neil.armstrong@...aro.org>,
Laurent Pinchart
<Laurent.pinchart@...asonboard.com>,
David Airlie <airlied@...il.com>, Daniel
Vetter <daniel@...ll.ch>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski
<krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>
CC: DRI Development List <dri-devel@...ts.freedesktop.org>,
Devicetree List
<devicetree@...r.kernel.org>,
Linux Kernel List
<linux-kernel@...r.kernel.org>,
Nishanth Menon <nm@...com>, Vignesh
Raghavendra <vigneshr@...com>,
Praneeth Bajjuri <praneeth@...com>, Udit Kumar
<u-kumar1@...com>,
Francesco Dolcini <francesco@...cini.it>,
Alexander
Sverdlin <alexander.sverdlin@...mens.com>,
Randolph Sapp <rs@...com>, Devarsh
Thakkar <devarsht@...com>,
Jayesh Choudhary <j-choudhary@...com>, Jai Luthra
<j-luthra@...com>,
Aradhya Bhatia <a-bhatia1@...com>
Subject: [PATCH 2/4] dt-bindings: display: ti: Add schema for AM625 OLDI Transmitter
Add devicetree binding schema for AM625 OLDI Transmitters.
Signed-off-by: Aradhya Bhatia <a-bhatia1@...com>
---
.../bindings/display/ti/ti,am625-oldi.yaml | 153 ++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 154 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/ti/ti,am625-oldi.yaml
diff --git a/Documentation/devicetree/bindings/display/ti/ti,am625-oldi.yaml b/Documentation/devicetree/bindings/display/ti/ti,am625-oldi.yaml
new file mode 100644
index 000000000000..0a96e600bc0b
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/ti/ti,am625-oldi.yaml
@@ -0,0 +1,153 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/ti/ti,am625-oldi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments AM625 OLDI Transmitter
+
+maintainers:
+ - Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
+ - Aradhya Bhatia <a-bhatia1@...com>
+
+description: |
+ The AM625 TI Keystone OpenLDI transmitter (OLDI TX) supports serialized RGB
+ pixel data transmission between host and flat panel display over LVDS (Low
+ Voltage Differential Sampling) interface. The OLDI TX consists of 7-to-1 data
+ serializers, and 4-data and 1-clock LVDS outputs. It supports the LVDS output
+ formats "jeida-18", "jeida-24" and "vesa-18", and can accept 24-bit RGB or
+ padded and un-padded 18-bit RGB bus formats as input.
+
+properties:
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+ description: serial clock input for the OLDI transmitters
+
+ clock-names:
+ const: s_clk
+
+ ti,companion-oldi:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description:
+ phandle to companion OLDI transmitter. This property is mandatory for the
+ primarty OLDI TX if the OLDI TXes are expected to work either in dual-lvds
+ mode or in clone mode. This property should point to the secondary OLDI
+ TX.
+
+ ti,secondary-oldi:
+ type: boolean
+ description: Boolean property to mark an OLDI TX as secondary node.
+
+ ti,oldi-io-ctrl:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description:
+ phandle to syscon device node mapping OLDI IO_CTRL registers found in the
+ control MMR region. This property is needed for OLDI interface to work.
+
+ ports:
+ $ref: /schemas/graph.yaml#/properties/ports
+
+ properties:
+ port@0:
+ $ref: /schemas/graph.yaml#/properties/port
+ description: Parallel RGB input port
+
+ port@1:
+ $ref: /schemas/graph.yaml#/properties/port
+ description: LVDS output port
+
+ required:
+ - port@0
+ - port@1
+
+allOf:
+ - if:
+ properties:
+ ti,secondary-oldi: true
+ then:
+ properties:
+ ti,companion-oldi: false
+ ti,oldi-io-ctrl: false
+ clocks: false
+ clock-names: false
+
+ else:
+ required:
+ - ti,oldi-io-ctrl
+ - clocks
+ - clock-names
+
+required:
+ - reg
+ - ports
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/soc/ti,sci_pm_domain.h>
+
+ oldi_txes {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ oldi: oldi@0 {
+ reg = <0>;
+ clocks = <&k3_clks 186 0>;
+ clock-names = "s_clk";
+ ti,oldi-io-ctrl = <&dss_oldi_io_ctrl>;
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ port@0 {
+ reg = <0>;
+ oldi_in: endpoint {
+ remote-endpoint = <&dpi0_out>;
+ };
+ };
+ };
+ };
+ };
+
+ - |
+ #include <dt-bindings/soc/ti,sci_pm_domain.h>
+
+ oldi_txes {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ oldi0: oldi@0 {
+ reg = <0>;
+ clocks = <&k3_clks 186 0>;
+ clock-names = "s_clk";
+ ti,companion-oldi = <&oldi1>;
+ ti,oldi-io-ctrl = <&dss_oldi_io_ctrl>;
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ port@0 {
+ reg = <0>;
+ oldi0_in: endpoint {
+ remote-endpoint = <&dpi0_out0>;
+ };
+ };
+ };
+ };
+ oldi1: oldi@1 {
+ reg = <1>;
+ ti,secondary-oldi;
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ port@0 {
+ reg = <0>;
+ oldi1_in: endpoint {
+ remote-endpoint = <&dpi0_out1>;
+ };
+ };
+ };
+ };
+ };
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index c675fc296b19..4426c4d41a7f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7480,6 +7480,7 @@ M: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
L: dri-devel@...ts.freedesktop.org
S: Maintained
T: git https://gitlab.freedesktop.org/drm/misc/kernel.git
+F: Documentation/devicetree/bindings/display/ti/ti,am625-oldi.yaml
F: Documentation/devicetree/bindings/display/ti/ti,am65x-dss.yaml
F: Documentation/devicetree/bindings/display/ti/ti,j721e-dss.yaml
F: Documentation/devicetree/bindings/display/ti/ti,k2g-dss.yaml
--
2.34.1
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