[PATCH v8 08/19] dt-bindings: display: imx: Add i.MX8qxp Display Controller

[Liu Ying <victor.liu@nxp.com>]

i.MX8qxp Display Controller(DC) is comprised of three main components that
include a blit engine for 2D graphics accelerations, display controller for
display output processing, as well as a command sequencer.

Signed-off-by: Liu Ying <victor.liu@nxp.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
---
v8:
* Drop instance numbers from compatible strings. This means switching back to
  the patch in v4. So, add Rob's previous R-b tag back. (Dmitry)

v7:
* Drop DT alias documentations and add instance numbers to display engine
  compatible strings. (Rob)

v6:
* No change.

v5:
* Document aliases.  Drop Rob's previous R-b tag. (Maxime)

v4:
* Collect Rob's R-b tag.

v3:
* No change.

v2:
* Drop fsl,dc-*-id DT properties from example. (Krzysztof)
* Use generic pmu pattern property. (Krzysztof)

 .../bindings/display/imx/fsl,imx8qxp-dc.yaml  | 236 ++++++++++++++++++
 1 file changed, 236 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc.yaml

diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc.yaml
new file mode 100644
index 000000000000..0a72f9f0b5fd
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc.yaml
@@ -0,0 +1,236 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/imx/fsl,imx8qxp-dc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX8qxp Display Controller
+
+description: |
+  The Freescale i.MX8qxp Display Controller(DC) is comprised of three main
+  components that include a blit engine for 2D graphics accelerations, display
+  controller for display output processing, as well as a command sequencer.
+
+                                  Display buffers              Source buffers
+                                 (AXI read master)            (AXI read master)
+                                  | .......... |                  | | |
+      +---------------------------+------------+------------------+-+-+------+
+      | Display Controller (DC)   | .......... |                  | | |      |
+      |                           |            |                  | | |      |
+      |   @@@@@@@@@@@  +----------+------------+------------+     | | |      |
+  A   |  | Command   | |          V            V            |     | | |      |
+  X <-+->| Sequencer | |    @@@@@@@@@@@@@@@@@@@@@@@@@@@@    |     V V V      |
+  I   |  | (AXI CLK) | |   |                            |   |   @@@@@@@@@@   |
+      |   @@@@@@@@@@@  |   |       Pixel Engine         |   |  |          |  |
+      |       |        |   |         (AXI CLK)          |   |  |          |  |
+      |       V        |    @@@@@@@@@@@@@@@@@@@@@@@@@@@@    |  |          |  |
+  A   |   ***********  |       |   |            |   |       |  |   Blit   |  |
+  H <-+->| Configure | |       V   V            V   V       |  |  Engine  |  |
+  B   |  | (CFG CLK) | |    00000000000      11111111111    |  | (AXI CLK)|  |
+      |   ***********  |   |  Display  |    |  Display  |   |  |          |  |
+      |                |   |  Engine   |    |  Engine   |   |  |          |  |
+      |                |   | (Disp CLK)|    | (Disp CLK)|   |  |          |  |
+      |   @@@@@@@@@@@  |    00000000000      11111111111    |   @@@@@@@@@@   |
+  I   |  |  Common   | |         |                |         |       |        |
+  R <-+--|  Control  | |         |    Display     |         |       |        |
+  Q   |  | (AXI CLK) | |         |   Controller   |         |       |        |
+      |   @@@@@@@@@@@  +------------------------------------+       |        |
+      |                          |                |       ^         |        |
+      +--------------------------+----------------+-------+---------+--------+
+              ^                  |                |       |         |
+              |                  V                V       |         V
+       Clocks & Resets        Display          Display  Panic   Destination
+                              Output0          Output1 Control    buffer
+                                                              (AXI write master)
+
+maintainers:
+  - Liu Ying <victor.liu@nxp.com>
+
+properties:
+  compatible:
+    const: fsl,imx8qxp-dc
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  resets:
+    maxItems: 2
+
+  reset-names:
+    items:
+      - const: axi
+      - const: cfg
+
+  power-domains:
+    maxItems: 1
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 1
+
+  ranges: true
+
+patternProperties:
+  "^command-sequencer@[0-9a-f]+$":
+    type: object
+    additionalProperties: true
+
+    properties:
+      compatible:
+        const: fsl,imx8qxp-dc-command-sequencer
+
+  "^display-engine@[0-9a-f]+$":
+    type: object
+    additionalProperties: true
+
+    properties:
+      compatible:
+        const: fsl,imx8qxp-dc-display-engine
+
+  "^interrupt-controller@[0-9a-f]+$":
+    type: object
+    additionalProperties: true
+
+    properties:
+      compatible:
+        const: fsl,imx8qxp-dc-intc
+
+  "^pixel-engine@[0-9a-f]+$":
+    type: object
+    additionalProperties: true
+
+    properties:
+      compatible:
+        const: fsl,imx8qxp-dc-pixel-engine
+
+  "^pmu@[0-9a-f]+$":
+    type: object
+    additionalProperties: true
+
+    properties:
+      compatible:
+        const: fsl,imx8qxp-dc-axi-performance-counter
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - power-domains
+  - "#address-cells"
+  - "#size-cells"
+  - ranges
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/imx8-lpcg.h>
+    #include <dt-bindings/firmware/imx/rsrc.h>
+
+    display-controller@56180000 {
+        compatible = "fsl,imx8qxp-dc";
+        reg = <0x56180000 0x40000>;
+        clocks = <&dc0_lpcg IMX_LPCG_CLK_4>;
+        power-domains = <&pd IMX_SC_R_DC_0>;
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges;
+
+        interrupt-controller@56180040 {
+            compatible = "fsl,imx8qxp-dc-intc";
+            reg = <0x56180040 0x60>;
+            clocks = <&dc0_lpcg IMX_LPCG_CLK_5>;
+            interrupt-controller;
+            interrupt-parent = <&dc0_irqsteer>;
+            #interrupt-cells = <1>;
+            interrupts = <448>, <449>, <450>,  <64>,
+                          <65>,  <66>,  <67>,  <68>,
+                          <69>,  <70>, <193>, <194>,
+                         <195>, <196>, <197>,  <72>,
+                          <73>,  <74>,  <75>,  <76>,
+                          <77>,  <78>,  <79>,  <80>,
+                          <81>, <199>, <200>, <201>,
+                         <202>, <203>, <204>, <205>,
+                         <206>, <207>, <208>,   <5>,
+                           <0>,   <1>,   <2>,   <3>,
+                           <4>,  <82>,  <83>,  <84>,
+                          <85>, <209>, <210>, <211>,
+                         <212>;
+            interrupt-names = "store9_shdload",
+                              "store9_framecomplete",
+                              "store9_seqcomplete",
+                              "extdst0_shdload",
+                              "extdst0_framecomplete",
+                              "extdst0_seqcomplete",
+                              "extdst4_shdload",
+                              "extdst4_framecomplete",
+                              "extdst4_seqcomplete",
+                              "extdst1_shdload",
+                              "extdst1_framecomplete",
+                              "extdst1_seqcomplete",
+                              "extdst5_shdload",
+                              "extdst5_framecomplete",
+                              "extdst5_seqcomplete",
+                              "disengcfg_shdload0",
+                              "disengcfg_framecomplete0",
+                              "disengcfg_seqcomplete0",
+                              "framegen0_int0",
+                              "framegen0_int1",
+                              "framegen0_int2",
+                              "framegen0_int3",
+                              "sig0_shdload",
+                              "sig0_valid",
+                              "sig0_error",
+                              "disengcfg_shdload1",
+                              "disengcfg_framecomplete1",
+                              "disengcfg_seqcomplete1",
+                              "framegen1_int0",
+                              "framegen1_int1",
+                              "framegen1_int2",
+                              "framegen1_int3",
+                              "sig1_shdload",
+                              "sig1_valid",
+                              "sig1_error",
+                              "reserved",
+                              "cmdseq_error",
+                              "comctrl_sw0",
+                              "comctrl_sw1",
+                              "comctrl_sw2",
+                              "comctrl_sw3",
+                              "framegen0_primsync_on",
+                              "framegen0_primsync_off",
+                              "framegen0_secsync_on",
+                              "framegen0_secsync_off",
+                              "framegen1_primsync_on",
+                              "framegen1_primsync_off",
+                              "framegen1_secsync_on",
+                              "framegen1_secsync_off";
+        };
+
+        pixel-engine@56180800 {
+            compatible = "fsl,imx8qxp-dc-pixel-engine";
+            reg = <0x56180800 0xac00>;
+            clocks = <&dc0_lpcg IMX_LPCG_CLK_5>;
+            #address-cells = <1>;
+            #size-cells = <1>;
+            ranges;
+        };
+
+        display-engine@5618b400 {
+            compatible = "fsl,imx8qxp-dc-display-engine";
+            reg = <0x5618b400 0x14>, <0x5618b800 0x1c00>;
+            reg-names = "top", "cfg";
+            interrupt-parent = <&dc0_intc>;
+            interrupts = <15>, <16>, <17>;
+            interrupt-names = "shdload", "framecomplete", "seqcomplete";
+            power-domains = <&pd IMX_SC_R_DC_0_PLL_0>;
+            #address-cells = <1>;
+            #size-cells = <1>;
+            ranges;
+        };
+    };
-- 
2.34.1