[PATCH v3 06/19] dt-bindings: display: imx: Add i.MX8qxp Display Controller command sequencer
Liu Ying
victor.liu at nxp.com
Wed Jul 24 02:29:37 PDT 2024
i.MX8qxp Display Controller contains a command sequencer is designed to
autonomously process command lists.
Signed-off-by: Liu Ying <victor.liu at nxp.com>
---
v3:
* New patch. (Rob)
.../imx/fsl,imx8qxp-dc-command-sequencer.yaml | 67 +++++++++++++++++++
1 file changed, 67 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-command-sequencer.yaml
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 000000000000..2e0e8e40a185
--- /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 at 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
+
+ fsl,iram:
+ $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 at 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";
+ };
--
2.34.1
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