dt-bindings: Add devicetree bindings

Add snapshot of device tree bindings from keystone common kernel, branch
"android-mainline-keystone-qcom-release" at c4c12103f9c0 ("Snap for 9228065
from e32903b9a63bb558df8b803b076619c53c16baad to
android-mainline-keystone-qcom-release").

Change-Id: I7682079615cbd9f29340a5c1f2a1d84ec441a1f1
Signed-off-by: Melody Olvera <quic_molvera@quicinc.com>

bindings/devfreq/event/rockchip-dfi.txt

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+
+* Rockchip rk3399 DFI device
+
+Required properties:
+- compatible: Must be "rockchip,rk3399-dfi".
+- reg: physical base address of each DFI and length of memory mapped region
+- rockchip,pmu: phandle to the syscon managing the "pmu general register files"
+- clocks: phandles for clock specified in "clock-names" property
+- clock-names : the name of clock used by the DFI, must be "pclk_ddr_mon";
+
+Example:
+	dfi: dfi@ff630000 {
+		compatible = "rockchip,rk3399-dfi";
+		reg = <0x00 0xff630000 0x00 0x4000>;
+		rockchip,pmu = <&pmugrf>;
+		clocks = <&cru PCLK_DDR_MON>;
+		clock-names = "pclk_ddr_mon";
+	};

bindings/devfreq/event/samsung,exynos-nocp.yaml

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+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/devfreq/event/samsung,exynos-nocp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung Exynos NoC (Network on Chip) Probe
+
+maintainers:
+  - Chanwoo Choi <cw00.choi@samsung.com>
+  - Krzysztof Kozlowski <krzk@kernel.org>
+
+description: |
+  The Samsung Exynos542x SoC has a NoC (Network on Chip) Probe for NoC bus.
+  NoC provides the primitive values to get the performance data. The packets
+  that the Network on Chip (NoC) probes detects are transported over the
+  network infrastructure to observer units. You can configure probes to capture
+  packets with header or data on the data request response network, or as
+  traffic debug or statistic collectors. Exynos542x bus has multiple NoC probes
+  to provide bandwidth information about behavior of the SoC that you can use
+  while analyzing system performance.
+
+properties:
+  compatible:
+    const: samsung,exynos5420-nocp
+
+  clock-names:
+    items:
+      - const: nocp
+
+  clocks:
+    maxItems: 1
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    nocp_mem0_0: nocp@10ca1000 {
+        compatible = "samsung,exynos5420-nocp";
+        reg = <0x10ca1000 0x200>;
+    };

bindings/devfreq/event/samsung,exynos-ppmu.yaml

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+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/devfreq/event/samsung,exynos-ppmu.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung Exynos SoC PPMU (Platform Performance Monitoring Unit)
+
+maintainers:
+  - Chanwoo Choi <cw00.choi@samsung.com>
+  - Krzysztof Kozlowski <krzk@kernel.org>
+
+description: |
+  The Samsung Exynos SoC has PPMU (Platform Performance Monitoring Unit) for
+  each IP. PPMU provides the primitive values to get performance data. These
+  PPMU events provide information of the SoC's behaviors so that you may use to
+  analyze system performance, to make behaviors visible and to count usages of
+  each IP (DMC, CPU, RIGHTBUS, LEFTBUS, CAM interface, LCD, G3D, MFC).  The
+  Exynos PPMU driver uses the devfreq-event class to provide event data to
+  various devfreq devices. The devfreq devices would use the event data when
+  derterming the current state of each IP.
+
+properties:
+  compatible:
+    enum:
+      - samsung,exynos-ppmu
+      - samsung,exynos-ppmu-v2
+
+  clock-names:
+    items:
+      - const: ppmu
+
+  clocks:
+    maxItems: 1
+
+  reg:
+    maxItems: 1
+
+  events:
+    type: object
+
+    patternProperties:
+      '^ppmu-event[0-9]+(-[a-z0-9]+){,2}$':
+        type: object
+        properties:
+          event-name:
+            description: |
+              The unique event name among PPMU device
+            $ref: /schemas/types.yaml#/definitions/string
+
+          event-data-type:
+            description: |
+              Define the type of data which shell be counted by the counter.
+              You can check include/dt-bindings/pmu/exynos_ppmu.h for all
+              possible type, i.e. count read requests, count write data in
+              bytes, etc.  This field is optional and when it is missing, the
+              driver code will use default data type.
+            $ref: /schemas/types.yaml#/definitions/uint32
+
+        required:
+          - event-name
+
+        additionalProperties: false
+
+    additionalProperties: false
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    // PPMUv1 nodes for Exynos3250 (although the board DTS defines events)
+    #include <dt-bindings/clock/exynos3250.h>
+
+    ppmu_dmc0: ppmu@106a0000 {
+        compatible = "samsung,exynos-ppmu";
+        reg = <0x106a0000 0x2000>;
+
+        events {
+            ppmu_dmc0_3: ppmu-event3-dmc0 {
+                event-name = "ppmu-event3-dmc0";
+            };
+
+            ppmu_dmc0_2: ppmu-event2-dmc0 {
+                event-name = "ppmu-event2-dmc0";
+            };
+
+            ppmu_dmc0_1: ppmu-event1-dmc0 {
+                event-name = "ppmu-event1-dmc0";
+            };
+
+            ppmu_dmc0_0: ppmu-event0-dmc0 {
+                event-name = "ppmu-event0-dmc0";
+            };
+        };
+    };
+
+    ppmu_rightbus: ppmu@112a0000 {
+        compatible = "samsung,exynos-ppmu";
+        reg = <0x112a0000 0x2000>;
+        clocks = <&cmu CLK_PPMURIGHT>;
+        clock-names = "ppmu";
+
+        events {
+            ppmu_rightbus_3: ppmu-event3-rightbus {
+                event-name = "ppmu-event3-rightbus";
+            };
+        };
+    };
+
+  - |
+    // PPMUv2 nodes in Exynos5433
+    ppmu_d0_cpu: ppmu@10480000 {
+        compatible = "samsung,exynos-ppmu-v2";
+        reg = <0x10480000 0x2000>;
+    };
+
+    ppmu_d0_general: ppmu@10490000 {
+        compatible = "samsung,exynos-ppmu-v2";
+        reg = <0x10490000 0x2000>;
+
+        events {
+            ppmu_event0_d0_general: ppmu-event0-d0-general {
+                event-name = "ppmu-event0-d0-general";
+            };
+        };
+    };
+
+    ppmu_d0_rt: ppmu@104a0000 {
+        compatible = "samsung,exynos-ppmu-v2";
+        reg = <0x104a0000 0x2000>;
+    };
+
+    ppmu_d1_cpu: ppmu@104b0000 {
+        compatible = "samsung,exynos-ppmu-v2";
+        reg = <0x104b0000 0x2000>;
+    };
+
+    ppmu_d1_general: ppmu@104c0000 {
+        compatible = "samsung,exynos-ppmu-v2";
+        reg = <0x104c0000 0x2000>;
+    };
+
+    ppmu_d1_rt: ppmu@104d0000 {
+        compatible = "samsung,exynos-ppmu-v2";
+        reg = <0x104d0000 0x2000>;
+    };
+
+  - |
+    // PPMUv1 nodes with event-data-type for Exynos4412
+    #include <dt-bindings/pmu/exynos_ppmu.h>
+
+    ppmu@106a0000 {
+        compatible = "samsung,exynos-ppmu";
+        reg = <0x106a0000 0x2000>;
+        clocks = <&clock 400>;
+        clock-names = "ppmu";
+
+        events {
+            ppmu-event3-dmc0 {
+                event-name = "ppmu-event3-dmc0";
+                event-data-type = <(PPMU_RO_DATA_CNT |
+                                    PPMU_WO_DATA_CNT)>;
+            };
+        };
+    };