[PATCH v3 1/5] dt-bindings: reset: IMX8MQ VPU reset

Benjamin Gaignard
2021-03-01T15:20:53Z

Document bindings for IMX8MQ VPU reset hardware block

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../bindings/reset/fsl,imx8mq-vpu-reset.yaml | 54 +++++++++++++++++++
include/dt-bindings/reset/imx8mq-vpu-reset.h | 16 ++++++
2 files changed, 70 insertions(+)
create mode 100644 Documentation/devicetree/bindings/reset/fsl,imx8mq-vpu-reset.yaml
create mode 100644 include/dt-bindings/reset/imx8mq-vpu-reset.h

diff --git a/Documentation/devicetree/bindings/reset/fsl,imx8mq-vpu-reset.yaml b/Documentation/devicetree/bindings/reset/fsl,imx8mq-vpu-reset.yaml
new file mode 100644
index 000000000000..00020421c0e3
--- /dev/null
+++ b/Documentation/devicetree/bindings/reset/fsl,imx8mq-vpu-reset.yaml
@@ -0,0 +1,54 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/reset/fsl,imx8mq-vpu-reset.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX8MQ VPU Reset Controller
+
+maintainers:
+ - Benjamin Gaignard <benjamin.gaignard@collabora.com>
+
+description: |
+ The VPU reset controller is used to reset the video processor
+ unit peripherals. Device nodes that need access to reset lines should
+ specify them as a reset phandle in their corresponding node as
+ specified in reset.txt.
+
+ For list of all valid reset indices see
+ <dt-bindings/reset/imx8mq-vpu-reset.h> for i.MX8MQ.
+
+properties:
+ compatible:
+ items:
+ - const: fsl,imx8mq-vpu-reset
+ - const: syscon
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ minItems: 1
+ maxItems: 3
+
+ '#reset-cells':
+ const: 1
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - '#reset-cells'
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/imx8mq-clock.h>
+
+ vpu-reset@38320000 {
+ compatible = "fsl,imx8mq-vpu-reset", "syscon";
+ reg = <0x38320000 0x10000>;
+ clocks = <&clk IMX8MQ_CLK_VPU_DEC_ROOT>;
+ #reset-cells = <1>;
+ };
diff --git a/include/dt-bindings/reset/imx8mq-vpu-reset.h b/include/dt-bindings/reset/imx8mq-vpu-reset.h
new file mode 100644
index 000000000000..efcbe18177fe
--- /dev/null
+++ b/include/dt-bindings/reset/imx8mq-vpu-reset.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2021, Collabora
+ *
+ * i.MX7 System Reset Controller (SRC) driver
+ *
+ * Author: Benjamin Gaignard <benjamin.gaignard@collabora.com>
+ */
+
+#ifndef DT_BINDINGS_VPU_RESET_IMX8MQ
+#define DT_BINDINGS_VPU_RESET_IMX8MQ
+
+#define IMX8MQ_RESET_VPU_RESET_G1 0
+#define IMX8MQ_RESET_VPU_RESET_G2 1
+
+#endif
--
2.25.1