From patchwork Sun Sep 11 07:15:18 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiucheng Xu X-Patchwork-Id: 604855 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 46B58C6FA89 for ; Sun, 11 Sep 2022 07:15:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229896AbiIKHP5 (ORCPT ); Sun, 11 Sep 2022 03:15:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41914 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229786AbiIKHPz (ORCPT ); Sun, 11 Sep 2022 03:15:55 -0400 Received: from mail-sh.amlogic.com (mail-sh.amlogic.com [58.32.228.43]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 551CF25EB7; Sun, 11 Sep 2022 00:15:54 -0700 (PDT) Received: from droid01-xa.amlogic.com (10.88.11.200) by mail-sh.amlogic.com (10.18.11.5) with Microsoft SMTP Server id 15.1.2507.9; Sun, 11 Sep 2022 15:15:46 +0800 From: Jiucheng Xu To: , , , CC: Rob Herring , Krzysztof Kozlowski , Will Deacon , Mark Rutland , Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Chris Healy , Jianxin Pan , Kelvin Zhang , Jiucheng Xu , Krzysztof Kozlowski Subject: [PATCH v7 3/4] dt-binding: perf: Add Amlogic DDR PMU Date: Sun, 11 Sep 2022 15:15:18 +0800 Message-ID: <20220911071519.2881258-3-jiucheng.xu@amlogic.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220911071519.2881258-1-jiucheng.xu@amlogic.com> References: <20220911071519.2881258-1-jiucheng.xu@amlogic.com> MIME-Version: 1.0 X-Originating-IP: [10.88.11.200] Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add binding documentation for the Amlogic G12 series DDR performance monitor unit. Signed-off-by: Jiucheng Xu Reviewed-by: Krzysztof Kozlowski --- Changes v6 -> v7: - No change Changes v5 -> v6: - remove blank line Changes v4 -> v5: - Remove "items" in compatible since have only one item - Condense description of reg - Rename node - Split one reg into two reg items. - Binding go first Changes v3 -> v4: - Fix "$id: relative path/filename doesn't match actual path or filename" warning Changes v2 -> v3: - Remove oneOf - Add descriptions - Fix compiling warning Changes v1 -> v2: - Rename file, from aml_ddr_pmu.yaml to amlogic,g12_ddr_pmu.yaml - Delete "model", "dmc_nr", "chann_nr" new properties - Fix compiling error --- .../bindings/perf/amlogic,g12-ddr-pmu.yaml | 54 +++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 55 insertions(+) create mode 100644 Documentation/devicetree/bindings/perf/amlogic,g12-ddr-pmu.yaml diff --git a/Documentation/devicetree/bindings/perf/amlogic,g12-ddr-pmu.yaml b/Documentation/devicetree/bindings/perf/amlogic,g12-ddr-pmu.yaml new file mode 100644 index 000000000000..50f46a6898b1 --- /dev/null +++ b/Documentation/devicetree/bindings/perf/amlogic,g12-ddr-pmu.yaml @@ -0,0 +1,54 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/perf/amlogic,g12-ddr-pmu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Amlogic G12 DDR performance monitor + +maintainers: + - Jiucheng Xu + +description: | + Amlogic G12 series SoC integrate DDR bandwidth monitor. + A timer is inside and can generate interrupt when timeout. + The bandwidth is counted in the timer ISR. Different platform + has different subset of event format attribute. + +properties: + compatible: + enum: + - amlogic,g12a-ddr-pmu + - amlogic,g12b-ddr-pmu + - amlogic,sm1-ddr-pmu + + reg: + items: + - description: DMC bandwidth register space. + - description: DMC PLL register space. + + interrupts: + items: + - description: The IRQ of the inside timer timeout. + +required: + - compatible + - reg + - interrupts + +additionalProperties: false + +examples: + - | + #include + pmu { + #address-cells=<2>; + #size-cells=<2>; + + pmu@ff638000 { + compatible = "amlogic,g12a-ddr-pmu"; + reg = <0x0 0xff638000 0x0 0x100>, + <0x0 0xff638c00 0x0 0x100>; + interrupts = ; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 8ee68e699e6d..67c2c9e8c4ea 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1055,6 +1055,7 @@ M: Jiucheng Xu S: Supported W: http://www.amlogic.com F: Documentation/admin-guide/perf/meson-ddr-pmu.rst +F: Documentation/devicetree/bindings/perf/amlogic,g12-ddr-pmu.yaml F: drivers/perf/amlogic/ F: include/soc/amlogic/