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Received: from AS8PR04MB8897.eurprd04.prod.outlook.com (2603:10a6:20b:42c::20) by DB9PR04MB8493.eurprd04.prod.outlook.com (2603:10a6:10:2c5::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7762.29; Wed, 17 Jul 2024 08:48:54 +0000 Received: from AS8PR04MB8897.eurprd04.prod.outlook.com ([fe80::35f6:bc7d:633:369a]) by AS8PR04MB8897.eurprd04.prod.outlook.com ([fe80::35f6:bc7d:633:369a%5]) with mapi id 15.20.7784.016; Wed, 17 Jul 2024 08:48:54 +0000 Message-ID: <33d93798-459b-4d33-ac59-623a68ea48cf@cherry.de> Date: Wed, 17 Jul 2024 10:48:52 +0200 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/6] pwm: add mule pwm-over-i2c driver To: =?UTF-8?Q?Uwe_Kleine-K=C3=B6nig?= Cc: Farouk Bouabid , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiko Stuebner , linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org References: <20240529-buzzer_support-v1-0-fd3eb0a24442@cherry.de> <20240529-buzzer_support-v1-2-fd3eb0a24442@cherry.de> <5hd7fndgivgusx76wq6mbvgefngd3tllqsfsk6pppbphchczte@ujagkep4miet> <25d71c19-6e94-477d-8d04-758015ca4b2c@cherry.de> Content-Language: en-US From: Quentin Schulz In-Reply-To: Content-Type: text/plain; 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On STM32, we use TIM15 in >> PWM mode and ARR and CCR1 as period and duty-cycle registers. > > Wouldn't it be more natural with these to have duty in a base-2 register > for duty, in the assumption that your MCUs habe this, too? > Not sure to understand what you meant by base-2 register here? I am guessing you rather wanted to suggest a different unit/representation of the duty cycle in the register in the FW API? Cheers, Quentin