From patchwork Wed Aug 9 02:30:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nishanth Menon X-Patchwork-Id: 13347343 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 BAA9BC04FE0 for ; Wed, 9 Aug 2023 02:31:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229999AbjHICbE (ORCPT ); Tue, 8 Aug 2023 22:31:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60542 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229800AbjHICbD (ORCPT ); Tue, 8 Aug 2023 22:31:03 -0400 Received: from lelv0142.ext.ti.com (lelv0142.ext.ti.com [198.47.23.249]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1F2181980; Tue, 8 Aug 2023 19:31:02 -0700 (PDT) Received: from fllv0034.itg.ti.com ([10.64.40.246]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id 3792Unld030651; Tue, 8 Aug 2023 21:30:49 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1691548249; bh=gBt1esfemGci73ojBGweJMx36TwAFnIc29q9IeP0Vqw=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=ZNXkGfV20CbHtN/4+1hbuXHLjdp/MV3pfjP3+k7jMsUst1D1274q2BenxxHxcJxQD oov5SPIjMVztImZeY/ofFmdby0WzZuBcFMKAVbmOGEo0nN6O0OOSfJcRT8wGrBwISz K2Ua3JGfjneLDVp+lJp0ddV1MEIsFfqXXOVIAPag= Received: from DLEE105.ent.ti.com (dlee105.ent.ti.com [157.170.170.35]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 3792Unnh060937 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 8 Aug 2023 21:30:49 -0500 Received: from DLEE113.ent.ti.com (157.170.170.24) by DLEE105.ent.ti.com (157.170.170.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23; Tue, 8 Aug 2023 21:30:48 -0500 Received: from fllv0040.itg.ti.com (10.64.41.20) by DLEE113.ent.ti.com (157.170.170.24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23 via Frontend Transport; Tue, 8 Aug 2023 21:30:48 -0500 Received: from localhost (ileaxei01-snat.itg.ti.com [10.180.69.5]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id 3792UmMD128419; Tue, 8 Aug 2023 21:30:48 -0500 From: Nishanth Menon To: Rob Herring , Stephen Boyd , Conor Dooley , Krzysztof Kozlowski , Viresh Kumar CC: Tony Lindgren , =?utf-8?q?Beno=C3=AEt_Cousson?= , "Rafael J. Wysocki" , Vibhore Vardhan , Dhruva Gole , , , , , , Nishanth Menon Subject: [PATCH V3 2/2] dt-bindings: cpufreq: Convert ti-cpufreq to json schema Date: Tue, 8 Aug 2023 21:30:45 -0500 Message-ID: <20230809023045.1870410-3-nm@ti.com> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230809023045.1870410-1-nm@ti.com> References: <20230809023045.1870410-1-nm@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org Move the ti-cpufreq binding over to opp and convert the free text binding to json-schema. Reviewed-by: Dhruva Gole Signed-off-by: Nishanth Menon --- Changes since V2: * Just fixup for commit message and picked up Reviewed-by from Dhruva. V2: https://lore.kernel.org/r/20230801233341.1416552-3-nm@ti.com V1: https://lore.kernel.org/all/20230724153911.1376830-6-nm@ti.com/ Side note: Cleanups in dt is picked up on Tony's tree: https://lore.kernel.org/all/20230731062551.GH5194@atomide.com/ .../bindings/cpufreq/ti-cpufreq.txt | 132 ------------------ .../opp/operating-points-v2-ti-cpu.yaml | 88 ++++++++++++ 2 files changed, 88 insertions(+), 132 deletions(-) delete mode 100644 Documentation/devicetree/bindings/cpufreq/ti-cpufreq.txt create mode 100644 Documentation/devicetree/bindings/opp/operating-points-v2-ti-cpu.yaml diff --git a/Documentation/devicetree/bindings/cpufreq/ti-cpufreq.txt b/Documentation/devicetree/bindings/cpufreq/ti-cpufreq.txt deleted file mode 100644 index 1758051798fe..000000000000 --- a/Documentation/devicetree/bindings/cpufreq/ti-cpufreq.txt +++ /dev/null @@ -1,132 +0,0 @@ -TI CPUFreq and OPP bindings -================================ - -Certain TI SoCs, like those in the am335x, am437x, am57xx, and dra7xx -families support different OPPs depending on the silicon variant in use. -The ti-cpufreq driver can use revision and an efuse value from the SoC to -provide the OPP framework with supported hardware information. This is -used to determine which OPPs from the operating-points-v2 table get enabled -when it is parsed by the OPP framework. - -Required properties: --------------------- -In 'cpus' nodes: -- operating-points-v2: Phandle to the operating-points-v2 table to use. - -In 'operating-points-v2' table: -- compatible: Should be - - 'operating-points-v2-ti-cpu' for am335x, am43xx, and dra7xx/am57xx, - omap34xx, omap36xx and am3517 SoCs -- syscon: A phandle pointing to a syscon node representing the control module - register space of the SoC. - -Optional properties: --------------------- -- "vdd-supply", "vbb-supply": to define two regulators for dra7xx -- "cpu0-supply", "vbb-supply": to define two regulators for omap36xx - -For each opp entry in 'operating-points-v2' table: -- opp-supported-hw: Two bitfields indicating: - 1. Which revision of the SoC the OPP is supported by - 2. Which eFuse bits indicate this OPP is available - - A bitwise AND is performed against these values and if any bit - matches, the OPP gets enabled. - -Example: --------- - -/* From arch/arm/boot/dts/am33xx.dtsi */ -cpus { - #address-cells = <1>; - #size-cells = <0>; - cpu@0 { - compatible = "arm,cortex-a8"; - device_type = "cpu"; - reg = <0>; - - operating-points-v2 = <&cpu0_opp_table>; - - clocks = <&dpll_mpu_ck>; - clock-names = "cpu"; - - clock-latency = <300000>; /* From omap-cpufreq driver */ - }; -}; - -/* - * cpu0 has different OPPs depending on SoC revision and some on revisions - * 0x2 and 0x4 have eFuse bits that indicate if they are available or not - */ -cpu0_opp_table: opp-table { - compatible = "operating-points-v2-ti-cpu"; - syscon = <&scm_conf>; - - /* - * The three following nodes are marked with opp-suspend - * because they can not be enabled simultaneously on a - * single SoC. - */ - opp50-300000000 { - opp-hz = /bits/ 64 <300000000>; - opp-microvolt = <950000 931000 969000>; - opp-supported-hw = <0x06 0x0010>; - opp-suspend; - }; - - opp100-275000000 { - opp-hz = /bits/ 64 <275000000>; - opp-microvolt = <1100000 1078000 1122000>; - opp-supported-hw = <0x01 0x00FF>; - opp-suspend; - }; - - opp100-300000000 { - opp-hz = /bits/ 64 <300000000>; - opp-microvolt = <1100000 1078000 1122000>; - opp-supported-hw = <0x06 0x0020>; - opp-suspend; - }; - - opp100-500000000 { - opp-hz = /bits/ 64 <500000000>; - opp-microvolt = <1100000 1078000 1122000>; - opp-supported-hw = <0x01 0xFFFF>; - }; - - opp100-600000000 { - opp-hz = /bits/ 64 <600000000>; - opp-microvolt = <1100000 1078000 1122000>; - opp-supported-hw = <0x06 0x0040>; - }; - - opp120-600000000 { - opp-hz = /bits/ 64 <600000000>; - opp-microvolt = <1200000 1176000 1224000>; - opp-supported-hw = <0x01 0xFFFF>; - }; - - opp120-720000000 { - opp-hz = /bits/ 64 <720000000>; - opp-microvolt = <1200000 1176000 1224000>; - opp-supported-hw = <0x06 0x0080>; - }; - - oppturbo-720000000 { - opp-hz = /bits/ 64 <720000000>; - opp-microvolt = <1260000 1234800 1285200>; - opp-supported-hw = <0x01 0xFFFF>; - }; - - oppturbo-800000000 { - opp-hz = /bits/ 64 <800000000>; - opp-microvolt = <1260000 1234800 1285200>; - opp-supported-hw = <0x06 0x0100>; - }; - - oppnitro-1000000000 { - opp-hz = /bits/ 64 <1000000000>; - opp-microvolt = <1325000 1298500 1351500>; - opp-supported-hw = <0x04 0x0200>; - }; -}; diff --git a/Documentation/devicetree/bindings/opp/operating-points-v2-ti-cpu.yaml b/Documentation/devicetree/bindings/opp/operating-points-v2-ti-cpu.yaml new file mode 100644 index 000000000000..ada57bfc1da9 --- /dev/null +++ b/Documentation/devicetree/bindings/opp/operating-points-v2-ti-cpu.yaml @@ -0,0 +1,88 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/opp/operating-points-v2-ti-cpu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: TI CPU OPP (Operating Performance Points) + +description: + Certain TI SoCs, like those in the am335x, am437x, am57xx, am62x and dra7xx + families support different OPPs depending on the silicon variant in use. + The ti-cpufreq driver can use revision and an efuse value from the SoC to + provide the OPP framework with supported hardware information. This is + used to determine which OPPs from the operating-points-v2 table get enabled + when it is parsed by the OPP framework. + +maintainers: + - Nishanth Menon + +allOf: + - $ref: opp-v2-base.yaml# + +properties: + compatible: + const: operating-points-v2-ti-cpu + + syscon: + $ref: /schemas/types.yaml#/definitions/phandle + description: | + points to syscon node representing the control module + register space of the SoC. + + opp-shared: true + +patternProperties: + '^opp(-?[0-9]+)*$': + type: object + additionalProperties: false + + properties: + clock-latency-ns: true + opp-hz: true + opp-microvolt: true + opp-supported-hw: true + opp-suspend: true + turbo-mode: true + + required: + - opp-hz + - opp-supported-hw + +required: + - compatible + - syscon + +additionalProperties: false + +examples: + - | + opp-table { + compatible = "operating-points-v2-ti-cpu"; + syscon = <&scm_conf>; + + opp-300000000 { + opp-hz = /bits/ 64 <300000000>; + opp-microvolt = <1100000 1078000 1122000>; + opp-supported-hw = <0x06 0x0020>; + opp-suspend; + }; + + opp-500000000 { + opp-hz = /bits/ 64 <500000000>; + opp-microvolt = <1100000 1078000 1122000>; + opp-supported-hw = <0x01 0xFFFF>; + }; + + opp-600000000 { + opp-hz = /bits/ 64 <600000000>; + opp-microvolt = <1100000 1078000 1122000>; + opp-supported-hw = <0x06 0x0040>; + }; + + opp-1000000000 { + opp-hz = /bits/ 64 <1000000000>; + opp-microvolt = <1325000 1298500 1351500>; + opp-supported-hw = <0x04 0x0200>; + }; + };