Add dt-schema yaml bindig for K2G DSS, an ultra-light version of TI
Keystone Display SubSystem.
Version history:
v2: no change
v3: - Add ports node
- Add includes to dts example
- reindent dts example
v4: - Add descriptions to reg and clocks properties
- Remove minItems when its value is the same as maxItems value
- Remove ports node
Signed-off-by: Jyri Sarha <jsarha@xxxxxx>
---
.../bindings/display/ti/ti,k2g-dss.yaml | 114 ++++++++++++++++++
1 file changed, 114 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/ti/ti,k2g-dss.yaml
diff --git a/Documentation/devicetree/bindings/display/ti/ti,k2g-dss.yaml b/Documentation/devicetree/bindings/display/ti/ti,k2g-dss.yaml
new file mode 100644
index 000000000000..17d27ed84bc0
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/ti/ti,k2g-dss.yaml
@@ -0,0 +1,114 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2019 Texas Instruments Incorporated
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/display/ti/ti,k2g-dss.yaml#";
+$schema: "http://devicetree.org/meta-schemas/core.yaml#";
+
+title: Texas Instruments K2G Display Subsystem
+
+maintainers:
+ - Jyri Sarha <jsarha@xxxxxx>
+ - Tomi Valkeinen <tomi.valkeinen@xxxxxx>
+
+description: |
+ The K2G DSS is an ultra-light version of TI Keystone Display
+ SubSystem. It has only one output port and video plane. The
+ output is DPI.
+
+properties:
+ compatible:
+ const: ti,k2g-dss
+
+ reg:
+ maxItems: 5
+ description: |
+ Addresses to each DSS memory region described in the SoC's TRM.
+ The reg-names refer to memory regions as follows:
+ reg-names: Region Name in TRM: Description:
+ cfg DSSUL_0_CFG DSS top level
+ common DISPC_COMMON DISPC common
+ vid1 DISPC_VID1 VID1 video plane
+ ovr1 DISPC_OVR1 OVR1 overlay manager for vp1
+ vp1 DISPC_VP1 VP1 video port 1
+
+ reg-names:
+ items:
+ - const: cfg
+ - const: common
+ - const: vid1
+ - const: ovr1
+ - const: vp1
+
+ clocks:
+ maxItems: 2
+ description:
+ phandles to clock nodes for DSS functional clock (fck) and video
+ port 1 pixel clock (vp1).
+
+ clock-names:
+ items:
+ - const: fck
+ - const: vp1
+
+ interrupts:
+ maxItems: 1
+
+ power-domains:
+ maxItems: 1
+ description: phandle to the associated power domain
+
+ port:
+ type: object
+ description:
+ Port as described in Documentation/devictree/bindings/graph.txt.
+ The DSS DPI output port node
+
+ max-memory-bandwidth:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Input memory (from main memory to dispc) bandwidth limit in
+ bytes per second
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - clocks
+ - clock-names
+ - interrupts
+ - port
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ dss: dss@02540000 {
+ compatible = "ti,k2g-dss";
+ reg = <0x02540000 0x400>,
+ <0x02550000 0x1000>,
+ <0x02557000 0x1000>,
+ <0x0255a800 0x100>,
+ <0x0255ac00 0x100>;
+ reg-names = "cfg", "common", "vid1", "ovr1", "vp1";
+ clocks = <&k2g_clks 0x2 0>,
+ <&k2g_clks 0x2 1>;
+ clock-names = "fck", "vp1";
+ interrupts = <GIC_SPI 247 IRQ_TYPE_EDGE_RISING>;
+
+ power-domains = <&k2g_pds 0x2>;
+
+ max-memory-bandwidth = <230000000>;
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ port@0 {
+ dpi_out: endpoint {
+ remote-endpoint = <&sii9022_in>;
+ };
+ };
+ };
+ };
--
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
