From patchwork Fri Jun 30 11:40:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Biju Das X-Patchwork-Id: 698151 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 A4260C001DE for ; Fri, 30 Jun 2023 11:40:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232530AbjF3LkT (ORCPT ); Fri, 30 Jun 2023 07:40:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40056 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232420AbjF3LkS (ORCPT ); Fri, 30 Jun 2023 07:40:18 -0400 Received: from relmlie5.idc.renesas.com (relmlor1.renesas.com [210.160.252.171]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 916142690; Fri, 30 Jun 2023 04:40:17 -0700 (PDT) X-IronPort-AV: E=Sophos;i="6.01,170,1684767600"; d="scan'208";a="166224236" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 30 Jun 2023 20:40:16 +0900 Received: from localhost.localdomain (unknown [10.226.93.15]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 0866E421E675; Fri, 30 Jun 2023 20:40:12 +0900 (JST) From: Biju Das To: Thierry Reding , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: Biju Das , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Geert Uytterhoeven , Magnus Damm , linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Fabrizio Castro , Krzysztof Kozlowski Subject: [PATCH v5 1/4] dt-bindings: pwm: Add RZ/V2M PWM binding Date: Fri, 30 Jun 2023 12:40:00 +0100 Message-Id: <20230630114003.320641-2-biju.das.jz@bp.renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230630114003.320641-1-biju.das.jz@bp.renesas.com> References: <20230630114003.320641-1-biju.das.jz@bp.renesas.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add device tree bindings for the RZ/V2{M, MA} PWM Timer (PWM). Signed-off-by: Biju Das Reviewed-by: Krzysztof Kozlowski Reviewed-by: Geert Uytterhoeven --- v4->v5: * No change v3->v4: * No change v2->v3: * Added Rb tag from Geert. v1->v2: * Added Rb tag from Krzysztof and the keep the Rb tag as the below changes are trivial * Updated the description for APB clock * Added resets required property * Updated the example with resets property --- .../bindings/pwm/renesas,rzv2m-pwm.yaml | 90 +++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 Documentation/devicetree/bindings/pwm/renesas,rzv2m-pwm.yaml diff --git a/Documentation/devicetree/bindings/pwm/renesas,rzv2m-pwm.yaml b/Documentation/devicetree/bindings/pwm/renesas,rzv2m-pwm.yaml new file mode 100644 index 000000000000..ddeed7550923 --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/renesas,rzv2m-pwm.yaml @@ -0,0 +1,90 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pwm/renesas,rzv2m-pwm.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas RZ/V2{M, MA} PWM Timer (PWM) + +maintainers: + - Biju Das + +description: | + The RZ/V2{M, MA} PWM Timer (PWM) composed of 16 channels. It supports the + following functions + * The PWM has 24-bit counters which operate at PWM_CLK (48 MHz). + * The frequency division ratio for internal counter operation is selectable + as PWM_CLK divided by 1, 16, 256, or 2048. + * The period as well as the duty cycle is adjustable. + * The low-level and high-level order of the PWM signals can be inverted. + * The duty cycle of the PWM signal is selectable in the range from 0 to 100%. + * The minimum resolution is 20.83 ns. + * Three interrupt sources: Rising and falling edges of the PWM signal and + clearing of the counter + * Counter operation and the bus interface are asynchronous and both can + operate independently of the magnitude relationship of the respective + clock periods. + +properties: + compatible: + items: + - enum: + - renesas,r9a09g011-pwm # RZ/V2M + - renesas,r9a09g055-pwm # RZ/V2MA + - const: renesas,rzv2m-pwm + + reg: + maxItems: 1 + + '#pwm-cells': + const: 2 + + interrupts: + maxItems: 1 + + clocks: + items: + - description: APB clock + - description: PWM clock + + clock-names: + items: + - const: apb + - const: pwm + + power-domains: + maxItems: 1 + + resets: + maxItems: 1 + +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + - power-domains + - resets + +allOf: + - $ref: pwm.yaml# + +additionalProperties: false + +examples: + - | + #include + #include + + pwm8: pwm@a4010400 { + compatible = "renesas,r9a09g011-pwm", "renesas,rzv2m-pwm"; + reg = <0xa4010400 0x80>; + interrupts = ; + clocks = <&cpg CPG_MOD R9A09G011_CPERI_GRPF_PCLK>, + <&cpg CPG_MOD R9A09G011_PWM8_CLK>; + clock-names = "apb", "pwm"; + power-domains = <&cpg>; + resets = <&cpg R9A09G011_PWM_GPF_PRESETN>; + #pwm-cells = <2>; + };