[PATCH v2 1/4] dt-bindings: devfreq: event: convert Samsung Exynos NoCP to dtschema

[PATCH v2 1/4] dt-bindings: devfreq: event: convert Samsung Exynos NoCP to dtschema

[Krzysztof Kozlowski]

Convert Samsung Exynos NoC Probe bindings to DT schema format using
json-schema.

New bindings contain copied description from previous bindings document,
therefore the license is set as GPL-2.0-only.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>

---

Changes since v1:
1. New patch
---
 .../bindings/devfreq/event/exynos-nocp.txt    | 26 ----------
 .../devfreq/event/samsung,exynos-nocp.yaml    | 48 +++++++++++++++++++
 2 files changed, 48 insertions(+), 26 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/devfreq/event/exynos-nocp.txt
 create mode 100644 Documentation/devicetree/bindings/devfreq/event/samsung,exynos-nocp.yaml

diff --git a/Documentation/devicetree/bindings/devfreq/event/exynos-nocp.txt b/Documentation/devicetree/bindings/devfreq/event/exynos-nocp.txt
deleted file mode 100644
index aeaebd425d1f..000000000000
--- a/Documentation/devicetree/bindings/devfreq/event/exynos-nocp.txt
+++ /dev/null
@@ -1,26 +0,0 @@
-
-* Samsung Exynos NoC (Network on Chip) Probe device
-
-The Samsung Exynos542x SoC has 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.
-
-Required properties:
-- compatible: Should be "samsung,exynos5420-nocp"
-- reg: physical base address of each NoC Probe and length of memory mapped region.
-
-Optional properties:
-- clock-names : the name of clock used by the NoC Probe, "nocp"
-- clocks : phandles for clock specified in "clock-names" property
-
-Example : NoC Probe nodes in Device Tree are listed below.
-
-	nocp_mem0_0: nocp@10ca1000 {
-		compatible = "samsung,exynos5420-nocp";
-		reg = <0x10CA1000 0x200>;
-	};
diff --git a/Documentation/devicetree/bindings/devfreq/event/samsung,exynos-nocp.yaml b/Documentation/devicetree/bindings/devfreq/event/samsung,exynos-nocp.yaml
new file mode 100644
index 000000000000..d318fccf78f1
--- /dev/null
+++ b/Documentation/devicetree/bindings/devfreq/event/samsung,exynos-nocp.yaml
@@ -0,0 +1,48 @@
+# 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 <krzysztof.kozlowski@canonical.com>
+
+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>;
+    };
-- 
2.30.2

[PATCH v2 2/4] dt-bindings: devfreq: event: convert Samsung Exynos PPMU to dtschema

[Krzysztof Kozlowski]

Convert Samsung Exynos PPMU bindings to DT schema format using
json-schema.  The example is quite different due to the nature of
dtschema examples parsing (no overriding via-label allowed).

New bindings contain copied description from previous bindings document,
therefore the license is set as GPL-2.0-only.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>

---

Changes since v1:
1. New patch
---
 .../bindings/devfreq/event/exynos-ppmu.txt    | 169 -----------------
 .../devfreq/event/samsung,exynos-ppmu.yaml    | 174 ++++++++++++++++++
 2 files changed, 174 insertions(+), 169 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/devfreq/event/exynos-ppmu.txt
 create mode 100644 Documentation/devicetree/bindings/devfreq/event/samsung,exynos-ppmu.yaml

diff --git a/Documentation/devicetree/bindings/devfreq/event/exynos-ppmu.txt b/Documentation/devicetree/bindings/devfreq/event/exynos-ppmu.txt
deleted file mode 100644
index fb46b491791c..000000000000
--- a/Documentation/devicetree/bindings/devfreq/event/exynos-ppmu.txt
+++ /dev/null
@@ -1,169 +0,0 @@
-
-* Samsung Exynos PPMU (Platform Performance Monitoring Unit) device
-
-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.
-
-Required properties for PPMU device:
-- compatible: Should be "samsung,exynos-ppmu" or "samsung,exynos-ppmu-v2.
-- reg: physical base address of each PPMU and length of memory mapped region.
-
-Optional properties for PPMU device:
-- clock-names : the name of clock used by the PPMU, "ppmu"
-- clocks : phandles for clock specified in "clock-names" property
-
-Required properties for 'events' child node of PPMU device:
-- event-name : the unique event name among PPMU device
-Optional properties for 'events' child node of PPMU device:
-- event-data-type : 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.
-
-Example1 : PPMUv1 nodes in exynos3250.dtsi are listed below.
-
-		ppmu_dmc0: ppmu_dmc0@106a0000 {
-			compatible = "samsung,exynos-ppmu";
-			reg = <0x106a0000 0x2000>;
-			status = "disabled";
-		};
-
-		ppmu_dmc1: ppmu_dmc1@106b0000 {
-			compatible = "samsung,exynos-ppmu";
-			reg = <0x106b0000 0x2000>;
-			status = "disabled";
-		};
-
-		ppmu_cpu: ppmu_cpu@106c0000 {
-			compatible = "samsung,exynos-ppmu";
-			reg = <0x106c0000 0x2000>;
-			status = "disabled";
-		};
-
-		ppmu_rightbus: ppmu_rightbus@112a0000 {
-			compatible = "samsung,exynos-ppmu";
-			reg = <0x112a0000 0x2000>;
-			clocks = <&cmu CLK_PPMURIGHT>;
-			clock-names = "ppmu";
-			status = "disabled";
-		};
-
-		ppmu_leftbus: ppmu_leftbus0@116a0000 {
-			compatible = "samsung,exynos-ppmu";
-			reg = <0x116a0000 0x2000>;
-			clocks = <&cmu CLK_PPMULEFT>;
-			clock-names = "ppmu";
-			status = "disabled";
-		};
-
-Example2 : Events of each PPMU node in exynos3250-rinato.dts are listed below.
-
-	&ppmu_dmc0 {
-		status = "okay";
-
-		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_dmc1 {
-		status = "okay";
-
-		events {
-			ppmu_dmc1_3: ppmu-event3-dmc1 {
-				event-name = "ppmu-event3-dmc1";
-			};
-		};
-	};
-
-	&ppmu_leftbus {
-		status = "okay";
-
-		events {
-			ppmu_leftbus_3: ppmu-event3-leftbus {
-				event-name = "ppmu-event3-leftbus";
-			};
-		};
-	};
-
-	&ppmu_rightbus {
-		status = "okay";
-
-		events {
-			ppmu_rightbus_3: ppmu-event3-rightbus {
-				event-name = "ppmu-event3-rightbus";
-			};
-		};
-	};
-
-Example3 : PPMUv2 nodes in exynos5433.dtsi are listed below.
-
-		ppmu_d0_cpu: ppmu_d0_cpu@10480000 {
-			compatible = "samsung,exynos-ppmu-v2";
-			reg = <0x10480000 0x2000>;
-			status = "disabled";
-		};
-
-		ppmu_d0_general: ppmu_d0_general@10490000 {
-			compatible = "samsung,exynos-ppmu-v2";
-			reg = <0x10490000 0x2000>;
-			status = "disabled";
-		};
-
-		ppmu_d0_rt: ppmu_d0_rt@104a0000 {
-			compatible = "samsung,exynos-ppmu-v2";
-			reg = <0x104a0000 0x2000>;
-			status = "disabled";
-		};
-
-		ppmu_d1_cpu: ppmu_d1_cpu@104b0000 {
-			compatible = "samsung,exynos-ppmu-v2";
-			reg = <0x104b0000 0x2000>;
-			status = "disabled";
-		};
-
-		ppmu_d1_general: ppmu_d1_general@104c0000 {
-			compatible = "samsung,exynos-ppmu-v2";
-			reg = <0x104c0000 0x2000>;
-			status = "disabled";
-		};
-
-		ppmu_d1_rt: ppmu_d1_rt@104d0000 {
-			compatible = "samsung,exynos-ppmu-v2";
-			reg = <0x104d0000 0x2000>;
-			status = "disabled";
-		};
-
-Example4 : 'event-data-type' in exynos4412-ppmu-common.dtsi are listed below.
-
-	&ppmu_dmc0 {
-		status = "okay";
-		events {
-			ppmu_dmc0_3: ppmu-event3-dmc0 {
-			event-name = "ppmu-event3-dmc0";
-			event-data-type = <(PPMU_RO_DATA_CNT |
-					PPMU_WO_DATA_CNT)>;
-			};
-		};
-	};
diff --git a/Documentation/devicetree/bindings/devfreq/event/samsung,exynos-ppmu.yaml b/Documentation/devicetree/bindings/devfreq/event/samsung,exynos-ppmu.yaml
new file mode 100644
index 000000000000..d755f4ff1bea
--- /dev/null
+++ b/Documentation/devicetree/bindings/devfreq/event/samsung,exynos-ppmu.yaml
@@ -0,0 +1,174 @@
+# 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 <krzysztof.kozlowski@canonical.com>
+
+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>;
+        status = "disabled";
+    };
+
+    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>;
+        status = "disabled";
+    };
+
+    ppmu_d1_cpu: ppmu@104b0000 {
+        compatible = "samsung,exynos-ppmu-v2";
+        reg = <0x104b0000 0x2000>;
+        status = "disabled";
+    };
+
+    ppmu_d1_general: ppmu@104c0000 {
+        compatible = "samsung,exynos-ppmu-v2";
+        reg = <0x104c0000 0x2000>;
+        status = "disabled";
+    };
+
+    ppmu_d1_rt: ppmu@104d0000 {
+        compatible = "samsung,exynos-ppmu-v2";
+        reg = <0x104d0000 0x2000>;
+        status = "disabled";
+    };
+
+  - |
+    // 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)>;
+            };
+        };
+    };
-- 
2.30.2

[PATCH v2 3/4] dt-bindings: memory: convert Samsung Exynos DMC to dtschema

[Krzysztof Kozlowski]

Convert Samsung Exynos5422 SoC frequency and voltage scaling for
Dynamic Memory Controller to DT schema format using json-schema.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Acked-by: Lukasz Luba <lukasz.luba@arm.com>

---

Changes since v1:
1. Corrent PPMU event node name (remove underscore).
2. Add Ack.
---
 .../memory-controllers/exynos5422-dmc.txt     |  84 -----------
 .../samsung,exynos5422-dmc.yaml               | 137 ++++++++++++++++++
 MAINTAINERS                                   |   2 +-
 3 files changed, 138 insertions(+), 85 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/memory-controllers/exynos5422-dmc.txt
 create mode 100644 Documentation/devicetree/bindings/memory-controllers/samsung,exynos5422-dmc.yaml

diff --git a/Documentation/devicetree/bindings/memory-controllers/exynos5422-dmc.txt b/Documentation/devicetree/bindings/memory-controllers/exynos5422-dmc.txt
deleted file mode 100644
index 02e4a1f862f1..000000000000
--- a/Documentation/devicetree/bindings/memory-controllers/exynos5422-dmc.txt
+++ /dev/null
@@ -1,84 +0,0 @@
-* Exynos5422 frequency and voltage scaling for Dynamic Memory Controller device
-
-The Samsung Exynos5422 SoC has DMC (Dynamic Memory Controller) to which the DRAM
-memory chips are connected. The driver is to monitor the controller in runtime
-and switch frequency and voltage. To monitor the usage of the controller in
-runtime, the driver uses the PPMU (Platform Performance Monitoring Unit), which
-is able to measure the current load of the memory.
-When 'userspace' governor is used for the driver, an application is able to
-switch the DMC and memory frequency.
-
-Required properties for DMC device for Exynos5422:
-- compatible: Should be "samsung,exynos5422-dmc".
-- clocks : list of clock specifiers, must contain an entry for each
-  required entry in clock-names for CLK_FOUT_SPLL, CLK_MOUT_SCLK_SPLL,
-  CLK_FF_DOUT_SPLL2, CLK_FOUT_BPLL, CLK_MOUT_BPLL, CLK_SCLK_BPLL,
-  CLK_MOUT_MX_MSPLL_CCORE, CLK_MOUT_MX_MSPLL_CCORE_PHY, CLK_MOUT_MCLK_CDREX,
-- clock-names : should include "fout_spll", "mout_sclk_spll", "ff_dout_spll2",
-  "fout_bpll", "mout_bpll", "sclk_bpll", "mout_mx_mspll_ccore",
-  "mout_mclk_cdrex"  entries
-- devfreq-events : phandles for PPMU devices connected to this DMC.
-- vdd-supply : phandle for voltage regulator which is connected.
-- reg : registers of two CDREX controllers.
-- operating-points-v2 : phandle for OPPs described in v2 definition.
-- device-handle : phandle of the connected DRAM memory device. For more
-	information please refer to documentation file:
-	Documentation/devicetree/bindings/ddr/lpddr3.txt
-- devfreq-events : phandles of the PPMU events used by the controller.
-- samsung,syscon-clk : phandle of the clock register set used by the controller,
-	these registers are used for enabling a 'pause' feature and are not
-	exposed by clock framework but they must be used in a safe way.
-	The register offsets are in the driver code and specyfic for this SoC
-	type.
-
-Optional properties for DMC device for Exynos5422:
-- interrupt-parent : The parent interrupt controller.
-- interrupts : Contains the IRQ line numbers for the DMC internal performance
-  event counters in DREX0 and DREX1 channels. Align with specification of the
-  interrupt line(s) in the interrupt-parent controller.
-- interrupt-names : IRQ names "drex_0" and "drex_1", the order should be the
-  same as in the 'interrupts' list above.
-
-Example:
-
-	ppmu_dmc0_0: ppmu@10d00000 {
-		compatible = "samsung,exynos-ppmu";
-		reg = <0x10d00000 0x2000>;
-		clocks = <&clock CLK_PCLK_PPMU_DREX0_0>;
-		clock-names = "ppmu";
-		events {
-			ppmu_event_dmc0_0: ppmu-event3-dmc0_0 {
-				event-name = "ppmu-event3-dmc0_0";
-			};
-		};
-	};
-
-	dmc: memory-controller@10c20000 {
-		compatible = "samsung,exynos5422-dmc";
-		reg = <0x10c20000 0x10000>, <0x10c30000 0x10000>;
-		clocks = <&clock CLK_FOUT_SPLL>,
-			 <&clock CLK_MOUT_SCLK_SPLL>,
-			 <&clock CLK_FF_DOUT_SPLL2>,
-			 <&clock CLK_FOUT_BPLL>,
-			 <&clock CLK_MOUT_BPLL>,
-			 <&clock CLK_SCLK_BPLL>,
-			 <&clock CLK_MOUT_MX_MSPLL_CCORE>,
-			 <&clock CLK_MOUT_MCLK_CDREX>;
-		clock-names = "fout_spll",
-			      "mout_sclk_spll",
-			      "ff_dout_spll2",
-			      "fout_bpll",
-			      "mout_bpll",
-			      "sclk_bpll",
-			      "mout_mx_mspll_ccore",
-			      "mout_mclk_cdrex";
-		operating-points-v2 = <&dmc_opp_table>;
-		devfreq-events = <&ppmu_event3_dmc0_0>,	<&ppmu_event3_dmc0_1>,
-				 <&ppmu_event3_dmc1_0>, <&ppmu_event3_dmc1_1>;
-		device-handle = <&samsung_K3QF2F20DB>;
-		vdd-supply = <&buck1_reg>;
-		samsung,syscon-clk = <&clock>;
-		interrupt-parent = <&combiner>;
-		interrupts = <16 0>, <16 1>;
-		interrupt-names = "drex_0", "drex_1";
-	};
diff --git a/Documentation/devicetree/bindings/memory-controllers/samsung,exynos5422-dmc.yaml b/Documentation/devicetree/bindings/memory-controllers/samsung,exynos5422-dmc.yaml
new file mode 100644
index 000000000000..6f4fd5814bf4
--- /dev/null
+++ b/Documentation/devicetree/bindings/memory-controllers/samsung,exynos5422-dmc.yaml
@@ -0,0 +1,137 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/memory-controllers/samsung,exynos5422-dmc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: |
+  Samsung Exynos5422 SoC frequency and voltage scaling for Dynamic Memory
+  Controller device
+
+maintainers:
+  - Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
+  - Lukasz Luba <lukasz.luba@arm.com>
+
+description: |
+  The Samsung Exynos5422 SoC has DMC (Dynamic Memory Controller) to which the
+  DRAM memory chips are connected. The driver is to monitor the controller in
+  runtime and switch frequency and voltage. To monitor the usage of the
+  controller in runtime, the driver uses the PPMU (Platform Performance
+  Monitoring Unit), which is able to measure the current load of the memory.
+  When 'userspace' governor is used for the driver, an application is able to
+  switch the DMC and memory frequency.
+
+properties:
+  compatible:
+    items:
+      - const: samsung,exynos5422-dmc
+
+  clock-names:
+    items:
+      - const: fout_spll
+      - const: mout_sclk_spll
+      - const: ff_dout_spll2
+      - const: fout_bpll
+      - const: mout_bpll
+      - const: sclk_bpll
+      - const: mout_mx_mspll_ccore
+      - const: mout_mclk_cdrex
+
+  clocks:
+    minItems: 8
+    maxItems: 8
+
+  devfreq-events:
+    $ref: '/schemas/types.yaml#/definitions/phandle-array'
+    minItems: 1
+    maxItems: 16
+    description: phandles of the PPMU events used by the controller.
+
+  device-handle:
+    $ref: '/schemas/types.yaml#/definitions/phandle'
+    description: |
+      phandle of the connected DRAM memory device. For more information please
+      refer to documentation file: Documentation/devicetree/bindings/ddr/lpddr3.txt
+
+  operating-points-v2: true
+
+  interrupts:
+    items:
+      - description: DMC internal performance event counters in DREX0
+      - description: DMC internal performance event counters in DREX1
+
+  interrupt-names:
+    items:
+      - const: drex_0
+      - const: drex_1
+
+  reg:
+    items:
+      - description: registers of DREX0
+      - description: registers of DREX1
+
+  samsung,syscon-clk:
+    $ref: '/schemas/types.yaml#/definitions/phandle'
+    description: |
+      Phandle of the clock register set used by the controller, these registers
+      are used for enabling a 'pause' feature and are not exposed by clock
+      framework but they must be used in a safe way.  The register offsets are
+      in the driver code and specyfic for this SoC type.
+
+  vdd-supply: true
+
+required:
+  - compatible
+  - clock-names
+  - clocks
+  - devfreq-events
+  - device-handle
+  - reg
+  - samsung,syscon-clk
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/exynos5420.h>
+    ppmu_dmc0_0: ppmu@10d00000 {
+        compatible = "samsung,exynos-ppmu";
+        reg = <0x10d00000 0x2000>;
+        clocks = <&clock CLK_PCLK_PPMU_DREX0_0>;
+        clock-names = "ppmu";
+        events {
+            ppmu_event_dmc0_0: ppmu-event3-dmc0-0 {
+                event-name = "ppmu-event3-dmc0_0";
+            };
+        };
+    };
+
+    memory-controller@10c20000 {
+        compatible = "samsung,exynos5422-dmc";
+        reg = <0x10c20000 0x10000>, <0x10c30000 0x10000>;
+        clocks = <&clock CLK_FOUT_SPLL>,
+                 <&clock CLK_MOUT_SCLK_SPLL>,
+                 <&clock CLK_FF_DOUT_SPLL2>,
+                 <&clock CLK_FOUT_BPLL>,
+                 <&clock CLK_MOUT_BPLL>,
+                 <&clock CLK_SCLK_BPLL>,
+                 <&clock CLK_MOUT_MX_MSPLL_CCORE>,
+                 <&clock CLK_MOUT_MCLK_CDREX>;
+        clock-names = "fout_spll",
+                      "mout_sclk_spll",
+                      "ff_dout_spll2",
+                      "fout_bpll",
+                      "mout_bpll",
+                      "sclk_bpll",
+                      "mout_mx_mspll_ccore",
+                      "mout_mclk_cdrex";
+        operating-points-v2 = <&dmc_opp_table>;
+        devfreq-events = <&ppmu_event3_dmc0_0>,	<&ppmu_event3_dmc0_1>,
+                         <&ppmu_event3_dmc1_0>, <&ppmu_event3_dmc1_1>;
+        device-handle = <&samsung_K3QF2F20DB>;
+        vdd-supply = <&buck1_reg>;
+        samsung,syscon-clk = <&clock>;
+        interrupt-parent = <&combiner>;
+        interrupts = <16 0>, <16 1>;
+        interrupt-names = "drex_0", "drex_1";
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index ebdb07a49b02..eb4ada858826 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5570,7 +5570,7 @@ M:	Lukasz Luba <lukasz.luba@arm.com>
 L:	linux-pm@vger.kernel.org
 L:	linux-samsung-soc@vger.kernel.org
 S:	Maintained
-F:	Documentation/devicetree/bindings/memory-controllers/exynos5422-dmc.txt
+F:	Documentation/devicetree/bindings/memory-controllers/samsung,exynos5422-dmc.yaml
 F:	drivers/memory/samsung/exynos5422-dmc.c
 
 DME1737 HARDWARE MONITOR DRIVER
-- 
2.30.2

[PATCH v2 4/4] ARM: dts: exynos: align PPMU event node names with dtschema

[Krzysztof Kozlowski]

Use hyphen instead of underscore and align the PPMU event node name with
dtschema.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>

---

Changes since v1:
1. New patch
---
 arch/arm/boot/dts/exynos5420.dtsi | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi
index e23e8ffb093f..10ccd5cb69fd 100644
--- a/arch/arm/boot/dts/exynos5420.dtsi
+++ b/arch/arm/boot/dts/exynos5420.dtsi
@@ -302,7 +302,7 @@ ppmu_dmc0_0: ppmu@10d00000 {
 			clocks = <&clock CLK_PCLK_PPMU_DREX0_0>;
 			clock-names = "ppmu";
 			events {
-				ppmu_event3_dmc0_0: ppmu-event3-dmc0_0 {
+				ppmu_event3_dmc0_0: ppmu-event3-dmc0-0 {
 					event-name = "ppmu-event3-dmc0_0";
 				};
 			};
@@ -314,7 +314,7 @@ ppmu_dmc0_1: ppmu@10d10000 {
 			clocks = <&clock CLK_PCLK_PPMU_DREX0_1>;
 			clock-names = "ppmu";
 			events {
-				ppmu_event3_dmc0_1: ppmu-event3-dmc0_1 {
+				ppmu_event3_dmc0_1: ppmu-event3-dmc0-1 {
 					event-name = "ppmu-event3-dmc0_1";
 				};
 			};
@@ -326,7 +326,7 @@ ppmu_dmc1_0: ppmu@10d60000 {
 			clocks = <&clock CLK_PCLK_PPMU_DREX1_0>;
 			clock-names = "ppmu";
 			events {
-				ppmu_event3_dmc1_0: ppmu-event3-dmc1_0 {
+				ppmu_event3_dmc1_0: ppmu-event3-dmc1-0 {
 					event-name = "ppmu-event3-dmc1_0";
 				};
 			};
@@ -338,7 +338,7 @@ ppmu_dmc1_1: ppmu@10d70000 {
 			clocks = <&clock CLK_PCLK_PPMU_DREX1_1>;
 			clock-names = "ppmu";
 			events {
-				ppmu_event3_dmc1_1: ppmu-event3-dmc1_1 {
+				ppmu_event3_dmc1_1: ppmu-event3-dmc1-1 {
 					event-name = "ppmu-event3-dmc1_1";
 				};
 			};
-- 
2.30.2

Re: [PATCH v2 1/4] dt-bindings: devfreq: event: convert Samsung Exynos NoCP to dtschema

[Rob Herring]

On Fri, 20 Aug 2021 17:03:50 +0200, Krzysztof Kozlowski wrote:
> Convert Samsung Exynos NoC Probe bindings to DT schema format using
> json-schema.
> 
> New bindings contain copied description from previous bindings document,
> therefore the license is set as GPL-2.0-only.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
> 
> ---
> 
> Changes since v1:
> 1. New patch
> ---
>  .../bindings/devfreq/event/exynos-nocp.txt    | 26 ----------
>  .../devfreq/event/samsung,exynos-nocp.yaml    | 48 +++++++++++++++++++
>  2 files changed, 48 insertions(+), 26 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/devfreq/event/exynos-nocp.txt
>  create mode 100644 Documentation/devicetree/bindings/devfreq/event/samsung,exynos-nocp.yaml
> 

Applied, thanks!

Re: [PATCH v2 2/4] dt-bindings: devfreq: event: convert Samsung Exynos PPMU to dtschema

[Rob Herring]

On Fri, 20 Aug 2021 17:03:51 +0200, Krzysztof Kozlowski wrote:
> Convert Samsung Exynos PPMU bindings to DT schema format using
> json-schema.  The example is quite different due to the nature of
> dtschema examples parsing (no overriding via-label allowed).
> 
> New bindings contain copied description from previous bindings document,
> therefore the license is set as GPL-2.0-only.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
> 
> ---
> 
> Changes since v1:
> 1. New patch
> ---
>  .../bindings/devfreq/event/exynos-ppmu.txt    | 169 -----------------
>  .../devfreq/event/samsung,exynos-ppmu.yaml    | 174 ++++++++++++++++++
>  2 files changed, 174 insertions(+), 169 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/devfreq/event/exynos-ppmu.txt
>  create mode 100644 Documentation/devicetree/bindings/devfreq/event/samsung,exynos-ppmu.yaml
> 

Applied, thanks!

Re: [PATCH v2 3/4] dt-bindings: memory: convert Samsung Exynos DMC to dtschema

[Rob Herring]

On Fri, 20 Aug 2021 17:03:52 +0200, Krzysztof Kozlowski wrote:
> Convert Samsung Exynos5422 SoC frequency and voltage scaling for
> Dynamic Memory Controller to DT schema format using json-schema.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
> Acked-by: Lukasz Luba <lukasz.luba@arm.com>
> 
> ---
> 
> Changes since v1:
> 1. Corrent PPMU event node name (remove underscore).
> 2. Add Ack.
> ---
>  .../memory-controllers/exynos5422-dmc.txt     |  84 -----------
>  .../samsung,exynos5422-dmc.yaml               | 137 ++++++++++++++++++
>  MAINTAINERS                                   |   2 +-
>  3 files changed, 138 insertions(+), 85 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/memory-controllers/exynos5422-dmc.txt
>  create mode 100644 Documentation/devicetree/bindings/memory-controllers/samsung,exynos5422-dmc.yaml
> 

Applied, thanks!

Re: (subset) [PATCH v2 4/4] ARM: dts: exynos: align PPMU event node names with dtschema

[Krzysztof Kozlowski]

On Fri, 20 Aug 2021 17:03:53 +0200, Krzysztof Kozlowski wrote:
> Use hyphen instead of underscore and align the PPMU event node name with
> dtschema.
> 
> 

Applied, thanks!

[4/4] ARM: dts: exynos: align PPMU event node names with dtschema
      commit: fb9b199e562d66af90f61d70eb737fa5e4deac2c

Best regards,
-- 
Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>

Re: (subset) [PATCH v2 4/4] ARM: dts: exynos: align PPMU event node names with dtschema

[Marek Szyprowski]

Hi Krzysztof,

On 15.09.2021 09:50, Krzysztof Kozlowski wrote:
> On Fri, 20 Aug 2021 17:03:53 +0200, Krzysztof Kozlowski wrote:
>> Use hyphen instead of underscore and align the PPMU event node name with
>> dtschema.
>>
>>
> Applied, thanks!
>
> [4/4] ARM: dts: exynos: align PPMU event node names with dtschema
>        commit: fb9b199e562d66af90f61d70eb737fa5e4deac2c
>
This breaks probing of Exynos event counters, which are needed by the 
Exynos DMC driver on Odroid XU3/XU4/HC1 boards. Just check the today's 
linux-next. I had no time to analyze which part of the code depends on 
the node names though...

Best regards
-- 
Marek Szyprowski, PhD
Samsung R&D Institute Poland

Re: (subset) [PATCH v2 4/4] ARM: dts: exynos: align PPMU event node names with dtschema

[Krzysztof Kozlowski]

On 16/09/2021 13:15, Marek Szyprowski wrote:
> Hi Krzysztof,
> 
> On 15.09.2021 09:50, Krzysztof Kozlowski wrote:
>> On Fri, 20 Aug 2021 17:03:53 +0200, Krzysztof Kozlowski wrote:
>>> Use hyphen instead of underscore and align the PPMU event node name with
>>> dtschema.
>>>
>>>
>> Applied, thanks!
>>
>> [4/4] ARM: dts: exynos: align PPMU event node names with dtschema
>>        commit: fb9b199e562d66af90f61d70eb737fa5e4deac2c
>>
> This breaks probing of Exynos event counters, which are needed by the 
> Exynos DMC driver on Odroid XU3/XU4/HC1 boards. Just check the today's 
> linux-next. I had no time to analyze which part of the code depends on 
> the node names though...

Thanks for the report. I'll drop the patch from my queue and check later
the driver.


Best regards,
Krzysztof