From: Liu Ying <victor.liu@nxp.com>
Date: Mon, 14 Apr 2025 03:50:15 +0000 (+0800)
Subject: dt-bindings: display: imx: Add i.MX8qxp Display Controller command sequencer
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=c809469f25fde307190a38c99982f91e5df53ac7;p=thirdparty%2Fkernel%2Flinux.git

dt-bindings: display: imx: Add i.MX8qxp Display Controller command sequencer

i.MX8qxp Display Controller contains a command sequencer is designed to
autonomously process command lists.

Signed-off-by: Liu Ying <victor.liu@nxp.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250414035028.1561475-7-victor.liu@nxp.com
---

diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-command-sequencer.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-command-sequencer.yaml
new file mode 100644
index 0000000000000..27118f4c0d281
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-command-sequencer.yaml
@@ -0,0 +1,67 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/imx/fsl,imx8qxp-dc-command-sequencer.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX8qxp Display Controller Command Sequencer
+
+description: |
+  The Command Sequencer is designed to autonomously process command lists.
+  By that it can load setups into the DC configuration and synchronize to
+  hardware events.  This releases a system's CPU from workload, because it
+  does not need to wait for certain events.  Also it simplifies SW architecture,
+  because no interrupt handlers are required.  Setups are read via AXI bus,
+  while write access to configuration registers occurs directly via an internal
+  bus.  This saves bandwidth for the AXI interconnect and improves the system
+  architecture in terms of safety aspects.
+
+maintainers:
+  - Liu Ying <victor.liu@nxp.com>
+
+properties:
+  compatible:
+    const: fsl,imx8qxp-dc-command-sequencer
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 5
+
+  interrupt-names:
+    items:
+      - const: error
+      - const: sw0
+      - const: sw1
+      - const: sw2
+      - const: sw3
+
+  sram:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: phandle pointing to the mmio-sram device node
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - interrupts
+  - interrupt-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/imx8-lpcg.h>
+
+    command-sequencer@56180400 {
+        compatible = "fsl,imx8qxp-dc-command-sequencer";
+        reg = <0x56180400 0x1a4>;
+        clocks = <&dc0_lpcg IMX_LPCG_CLK_5>;
+        interrupt-parent = <&dc0_intc>;
+        interrupts = <36>, <37>, <38>, <39>, <40>;
+        interrupt-names = "error", "sw0", "sw1", "sw2", "sw3";
+    };