Adds new coresight-csr.yaml file describing the bindings required
to define csr in the device trees.
Signed-off-by: Mao Jinlong <[email protected]>
---
.../bindings/arm/qcom,coresight-csr.yaml | 130 ++++++++++++++++++
MAINTAINERS | 2 +-
include/dt-bindings/arm/coresight-csr-dt.h | 12 ++
3 files changed, 143 insertions(+), 1 deletion(-)
create mode 100644 Documentation/devicetree/bindings/arm/qcom,coresight-csr.yaml
create mode 100644 include/dt-bindings/arm/coresight-csr-dt.h
diff --git a/Documentation/devicetree/bindings/arm/qcom,coresight-csr.yaml b/Documentation/devicetree/bindings/arm/qcom,coresight-csr.yaml
new file mode 100644
index 000000000000..de4baa335fdb
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/qcom,coresight-csr.yaml
@@ -0,0 +1,130 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/qcom,coresight-csr.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: CoreSight Slave Register - CSR
+
+description: |
+ CoreSight Slave Register block hosts miscellaneous configuration registers.
+ Those configuration registers can be used to control, various coresight
+ configurations.
+
+maintainers:
+ - Mao Jinlong <[email protected]>
+ - Hao Zhang <[email protected]>
+
+properties:
+ $nodename:
+ pattern: "^csr(@[0-9a-f]+)$"
+ compatible:
+ items:
+ - const: qcom,coresight-csr
+
+ reg:
+ minItems: 1
+ maxItems: 2
+
+ clocks:
+ maxItems: 1
+
+ clock-names:
+ items:
+ - const: apb_pclk
+
+ # size cells and address cells required if assoc_device node present.
+ "#size-cells":
+ const: 0
+
+ "#address-cells":
+ const: 1
+
+patternProperties:
+ '^assoc_device@([0-9]+)$':
+ type: object
+ description:
+ A assocated device child node which describes the required configs
+ between this CSR and another hardware device. This device may be ETR or
+ TPDM device.
+
+ properties:
+ reg:
+ maxItems: 1
+
+ arm,cs-dev-assoc:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description:
+ defines a phandle reference to an associated CoreSight trace device.
+ When the associated trace device is enabled, then the respective CSR
+ will be enabled. If the associated device has not been registered
+ then the node name will be stored as the assocated name for later
+ resolution.
+
+ qcom,cs-dev-type:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Device type of the Assocated device. Types are in coresight-csr-dt.h.
+
+ qcom,csr-bytecntr-offset:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ The ETR irqctrl register offset. If the assocated device is ETR
+ device and there are more than one ETR devices, this property need
+ to be added.
+
+ interrupts:
+ minItems: 1
+
+ interrupt-names:
+ minItems: 1
+
+ required:
+ - reg
+ - qcom,cs-dev-type
+ - qcom,cs-dev-assoc
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+
+additionalProperties: false
+
+examples:
+ # minimum CSR definition.
+ - |
+ csr@10001000 {
+ compatible = "qcom,coresight-csr";
+ reg = <0 0x10001000 0 0x1000>;
+
+ clocks = <&aoss_qmp>;
+ clock-names = "apb_pclk";
+ };
+ # Assocated with ETR device
+ - |
+ #include <dt-bindings/arm/coresight-csr-dt.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ csr@10001000 {
+ compatible = "qcom,coresight-csr";
+ reg = <0 0x10001000 0 0x1000>;
+
+ clocks = <&aoss_qmp>;
+ clock-names = "apb_pclk";
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+ assoc_device@0 {
+ reg = <0>;
+ qcom,cs-dev-type = <CSR_ASSOC_DEV_ETR>;
+ qcom,cs-dev-assoc = <&tmc_etr>;
+ qcom,csr-bytecntr-offset = <0x6c>;
+ interrupts = <GIC_SPI 270 IRQ_TYPE_EDGE_RISING>;
+ interrupt-names = "byte-cntr-irq";
+ };
+ };
+...
+
diff --git a/MAINTAINERS b/MAINTAINERS
index d516295978a4..3ed81a8fd1d0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2042,7 +2042,7 @@ F: Documentation/devicetree/bindings/arm/arm,trace-buffer-extension.yaml
F: Documentation/devicetree/bindings/arm/qcom,coresight-*.yaml
F: Documentation/trace/coresight/*
F: drivers/hwtracing/coresight/*
-F: include/dt-bindings/arm/coresight-cti-dt.h
+F: include/dt-bindings/arm/coresight-*.h
F: include/linux/coresight*
F: samples/coresight/*
F: tools/perf/arch/arm/util/auxtrace.c
diff --git a/include/dt-bindings/arm/coresight-csr-dt.h b/include/dt-bindings/arm/coresight-csr-dt.h
new file mode 100644
index 000000000000..804b9bbeb2bd
--- /dev/null
+++ b/include/dt-bindings/arm/coresight-csr-dt.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause */
+/*
+ * This header provides constants for the defined device
+ * types on CoreSight CSR.
+ */
+
+#ifndef _DT_BINDINGS_ARM_CORESIGHT_CSR_DT_H
+#define _DT_BINDINGS_ARM_CORESIGHT_CSR_DT_H
+
+#define CSR_ASSOC_DEV_ETR 1
+
+#endif /*_DT_BINDINGS_ARM_CORESIGHT_CSR_DT_H */
--
2.17.1