From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 885A7EB64DA for ; Sat, 17 Jun 2023 16:35:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=tsBxCZZQVI2MPOha2NcUr1ANl25FbtnQE2Xkuvba92Q=; b=J3aylGS0qou/NI Bl71ju2iyO54jx+XXzxJZMq1qhLAE4dW4ESxdyiM3n9uYwoHrXc1uIv6jveF9IdABw4BsM+eeT7K8 SgI6YMHHPVkbJk0M69Jeqa6ctXq8cOLQSZ2nychUWLyMrscBK4BsUUmCJlJySbVuhumX2nZyx82eo VAG1FSKXTzEpb+wBZSQzYHUP01k4M9bNjgC01W8uQlTt/jn7N+ScROMgeR/5gbA8uQKFQ47CUgPbH R5nGdu47Cz44C28gENWrSTgK+1yDPWG9CqltLVwnQLf/wbMPYsHooQZKkuyIYfQvhmUbn5CPvJAW3 5f5IBE7NZ7Hw3vaIRmFQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qAYt3-003ugl-0m; Sat, 17 Jun 2023 16:34:53 +0000 Received: from gloria.sntech.de ([185.11.138.130]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qAYt0-003ueQ-27; Sat, 17 Jun 2023 16:34:51 +0000 Received: from i53875b22.versanet.de ([83.135.91.34] helo=diego.localnet) by gloria.sntech.de with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1qAYsg-0007Kt-6E; Sat, 17 Jun 2023 18:34:30 +0200 From: Heiko =?ISO-8859-1?Q?St=FCbner?= To: Maximilian Weigand , Lee Jones , Daniel Thompson , Jingoo Han , Helge Deller , Pavel Machek , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Krzysztof Kozlowski Cc: dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, Maximilian Weigand Subject: Re: [PATCH 2/3] dt-bindings: backlight: lm3630a: add entries to control boost frequency Date: Sat, 17 Jun 2023 18:34:28 +0200 Message-ID: <7491264.lOV4Wx5bFT@diego> In-Reply-To: <17576d81-a342-0b77-367a-eb9f2b97b734@linaro.org> References: <20230602-lm3630a_boost_frequency-v1-0-076472036d1a@mweigand.net> <20230602-lm3630a_boost_frequency-v1-2-076472036d1a@mweigand.net> <17576d81-a342-0b77-367a-eb9f2b97b734@linaro.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230617_093450_691245_1CECCFA0 X-CRM114-Status: GOOD ( 20.41 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Am Samstag, 17. Juni 2023, 12:12:17 CEST schrieb Krzysztof Kozlowski: > On 14/06/2023 21:08, Maximilian Weigand wrote: > > From: Maximilian Weigand > > > > Add 'ti,boost_use_1mhz' to switch between 500 kHz and 1 MHz boost > > converter switching frequency, and add 'ti,boost_frequency_shift' to > > activate a frequency shift to 560 kHz or 1.12 MHz, respectively. > > > > Signed-off-by: Maximilian Weigand > > --- > > .../bindings/leds/backlight/lm3630a-backlight.yaml | 12 ++++++++++++ > > 1 file changed, 12 insertions(+) > > > > diff --git a/Documentation/devicetree/bindings/leds/backlight/lm3630a-backlight.yaml b/Documentation/devicetree/bindings/leds/backlight/lm3630a-backlight.yaml > > index 3c9b4054ed9a..ef7ea0ad2d25 100644 > > --- a/Documentation/devicetree/bindings/leds/backlight/lm3630a-backlight.yaml > > +++ b/Documentation/devicetree/bindings/leds/backlight/lm3630a-backlight.yaml > > @@ -33,6 +33,18 @@ properties: > > description: GPIO to use to enable/disable the backlight (HWEN pin). > > maxItems: 1 > > > > + ti,boost_use_1mhz: > > No underscores in property names. > > > + description: | > > Do not need '|' unless you need to preserve formatting. > > > + If present, change the boost converter switching frequency from the > > + default 500 kHz to 1 MHz. Refer to data sheet for hardware requirements. > > + type: boolean > > + > > + ti,boost_frequency_shift: > > + description: | > > + If present, change boost converter switching frequency from 500 kHz to > > + 560 kHz or from 1 Mhz to 1.12 Mhz, respectively. > > So just make it a property choosing the frequency, not bools, with > proper unit suffix. i.e. ti,boost-frequency-hz = ; with x being 500000, 560000, 1000000, 1120000 with the driver failing when the frequency is not achievable with the two knobs of 1mhz and shift. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel