[PATCH v6 4/4] dt-bindings: display: imx: add bindings for DCSS

Laurentiu Palcu
2020-07-17T14:43:04Z

From: Laurentiu Palcu <laurentiu.palcu@nxp.com>

Add bindings for iMX8MQ Display Controller Subsystem.

Signed-off-by: Laurentiu Palcu <laurentiu.palcu@nxp.com>
---
.../bindings/display/imx/nxp,imx8mq-dcss.yaml | 104 ++++++++++++++++++
1 file changed, 104 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/imx/nxp,imx8mq-dcss.yaml

diff --git a/Documentation/devicetree/bindings/display/imx/nxp,imx8mq-dcss.yaml b/Documentation/devicetree/bindings/display/imx/nxp,imx8mq-dcss.yaml
new file mode 100644
index 000000000000..68e4635e4874
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/imx/nxp,imx8mq-dcss.yaml
@@ -0,0 +1,104 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2019 NXP
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/display/imx/nxp,imx8mq-dcss.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: iMX8MQ Display Controller Subsystem (DCSS)
+
+maintainers:
+ - Laurentiu Palcu <laurentiu.palcu@nxp.com>
+
+description:
+
+ The DCSS (display controller sub system) is used to source up to three
+ display buffers, compose them, and drive a display using HDMI 2.0a(with HDCP
+ 2.2) or MIPI-DSI. The DCSS is intended to support up to 4kp60 displays. HDR10
+ image processing capabilities are included to provide a solution capable of
+ driving next generation high dynamic range displays.
+
+properties:
+ compatible:
+ const: nxp,imx8mq-dcss
+
+ reg:
+ items:
+ - description: DCSS base address and size, up to IRQ steer start
+ - description: DCSS BLKCTL base address and size
+
+ interrupts:
+ items:
+ - description: Context loader completion and error interrupt
+ - description: DTG interrupt used to signal context loader trigger time
+ - description: DTG interrupt for Vblank
+
+ interrupt-names:
+ items:
+ - const: ctxld
+ - const: ctxld_kick
+ - const: vblank
+
+ clocks:
+ items:
+ - description: Display APB clock for all peripheral PIO access interfaces
+ - description: Display AXI clock needed by DPR, Scaler, RTRAM_CTRL
+ - description: RTRAM clock
+ - description: Pixel clock, can be driven either by HDMI phy clock or MIPI
+ - description: DTRC clock, needed by video decompressor
+
+ clock-names:
+ items:
+ - const: apb
+ - const: axi
+ - const: rtrm
+ - const: pix
+ - const: dtrc
+
+ assigned-clocks:
+ items:
+ - description: Phandle and clock specifier of IMX8MQ_CLK_DISP_AXI_ROOT
+ - description: Phandle and clock specifier of IMX8MQ_CLK_DISP_RTRM
+ - description: Phandle and clock specifier of either IMX8MQ_VIDEO2_PLL1_REF_SEL or
+ IMX8MQ_VIDEO_PLL1_REF_SEL
+
+ assigned-clock-parents:
+ items:
+ - description: Phandle and clock specifier of IMX8MQ_SYS1_PLL_800M
+ - description: Phandle and clock specifier of IMX8MQ_SYS1_PLL_800M
+ - description: Phandle and clock specifier of IMX8MQ_CLK_27M
+
+ assigned-clock-rates:
+ items:
+ - description: Must be 800 MHz
+ - description: Must be 400 MHz
+
+ port:
+ type: object
+ description:
+ A port node pointing to the input port of a HDMI/DP or MIPI display bridge.
+
+additionalProperties: false
+
+examples:
+ - |
+ dcss: display-controller@32e00000 {
+ compatible = "nxp,imx8mq-dcss";
+ reg = <0x32e00000 0x2d000>, <0x32e2f000 0x1000>;
+ interrupts = <6>, <8>, <9>;
+ interrupt-names = "ctxld", "ctxld_kick", "vblank";
+ interrupt-parent = <&irqsteer>;
+ clocks = <&clk 248>, <&clk 247>, <&clk 249>,
+ <&clk 254>,<&clk 122>;
+ clock-names = "apb", "axi", "rtrm", "pix", "dtrc";
+ assigned-clocks = <&clk 107>, <&clk 109>, <&clk 266>;
+ assigned-clock-parents = <&clk 78>, <&clk 78>, <&clk 3>;
+ assigned-clock-rates = <800000000>,
+ <400000000>;
+ port {
+ dcss_out: endpoint {
+ remote-endpoint = <&hdmi_in>;
+ };
+ };
+ };
+
--
2.17.1