linux-kernel - [PATCH v3 2/5] dt-bindings: perf: stm32: ddrperfm support

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Message-ID: <1566918464-23927-3-git-send-email-gerald.baeza@st.com>
Date:   Tue, 27 Aug 2019 15:08:19 +0000
From:   Gerald BAEZA <gerald.baeza@...com>
To:     "will@...nel.org" <will@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mcoquelin.stm32@...il.com" <mcoquelin.stm32@...il.com>,
        Alexandre TORGUE <alexandre.torgue@...com>,
        "corbet@....net" <corbet@....net>,
        "linux@...linux.org.uk" <linux@...linux.org.uk>,
        "olof@...om.net" <olof@...om.net>, "arnd@...db.de" <arnd@...db.de>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-stm32@...md-mailman.stormreply.com" 
        <linux-stm32@...md-mailman.stormreply.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>
CC:     Gerald BAEZA <gerald.baeza@...com>
Subject: [PATCH v3 2/5] dt-bindings: perf: stm32: ddrperfm support

The DDRPERFM is the DDR Performance Monitor embedded in STM32MP1 SOC.

This documentation indicates how to enable stm32-ddr-pmu driver on
DDRPERFM peripheral, via the device tree.

Signed-off-by: Gerald Baeza <gerald.baeza@...com>
---
 Documentation/devicetree/bindings/perf/stm32-ddr-pmu.txt | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/perf/stm32-ddr-pmu.txt

diff --git a/Documentation/devicetree/bindings/perf/stm32-ddr-pmu.txt b/Documentation/devicetree/bindings/perf/stm32-ddr-pmu.txt
new file mode 100644
index 0000000..87ab12e
--- /dev/null
+++ b/Documentation/devicetree/bindings/perf/stm32-ddr-pmu.txt
@@ -0,0 +1,16 @@
+* STM32 DDR Performance Monitor (DDRPERFM)
+
+Required properties:
+- compatible: must be "st,stm32-ddr-pmu".
+- reg: physical address and length of the registers set.
+- clocks: phandle and specifier for DDRPERFM input clock
+- resets: phandle and specifier for DDRPERFM reset
+
+Example:
+	ddrperfm: perf@...07000 {
+		compatible = "st,stm32-ddr-pmu";
+		reg = <0x5a007000 0x400>;
+		clocks = <&rcc DDRPERFM>;
+		resets = <&rcc DDRPERFM_R>;
+	};
+
-- 
2.7.4