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 E7B74E75458 for ; Tue, 3 Oct 2023 13:06:45 +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:In-Reply-To:MIME-Version:References: Message-ID:Subject:CC:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=wfkAbc0z4FnlJPF8nIILvtTLALWzy6l1EKs0/wO4AyY=; b=xnKuCME0eWsmTm 3h4jezcWBmm65ZSutkSwyXz1Hx2FHeakFxOYnHEwIhlSk7QFzs/MpRnDAweT1gMl6YKxxebWF45ZI rvE6IvN9ofbU81nD3RSXGaW3M9ue0pvjGqcHqtK5qfqOjfJ+m6Dm7N8/S5nexTFzdPko6Nt0Jrg8w 6wheVm09QzS14jwFiNekm0RcHmAFOrrN12b7i8iCoPzcYvxoUuQRD5mwUwYOMpwBp1jt703CEogMK dDw0nnfnZuf3jHRpffHv/xCySNH7ZzNFb/2eawGtI9EjsHxXP8sir6aLPmkOT2W6obK9ML59F0k7G IZanQ+M6zXVZUtRPuCeg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qnf6O-00Eg3i-22; Tue, 03 Oct 2023 13:06:16 +0000 Received: from lelv0142.ext.ti.com ([198.47.23.249]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qnf6J-00Eg3C-1C for linux-arm-kernel@lists.infradead.org; Tue, 03 Oct 2023 13:06:14 +0000 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id 393D5ubr078279; Tue, 3 Oct 2023 08:05:56 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1696338356; bh=MrFLaNBl/s0GYVJyufte6yFQiZGumC8D+qFQk57wCCM=; h=Date:From:To:CC:Subject:References:In-Reply-To; b=AQes4Kdgon5Mg1d/RaOuO41LXKTjsHxmqSKOYp3epo58Q4ab/fNUgOvZGKfM5Xhv1 j8IMsyS+AKTQPwxxtTZ7pXevBBo7QPUfeMRw8LNc6KEbbio+iQb8QUvtCBf7WRLoWt vNHYs5996epR/T0943fGlYRXdFEjYTUW/Wc6Tgqs= Received: from DFLE108.ent.ti.com (dfle108.ent.ti.com [10.64.6.29]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 393D5uPU010601 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 3 Oct 2023 08:05:56 -0500 Received: from DFLE109.ent.ti.com (10.64.6.30) by DFLE108.ent.ti.com (10.64.6.29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23; Tue, 3 Oct 2023 08:05:56 -0500 Received: from fllv0039.itg.ti.com (10.64.41.19) by DFLE109.ent.ti.com (10.64.6.30) 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, 3 Oct 2023 08:05:56 -0500 Received: from localhost (ileaxei01-snat.itg.ti.com [10.180.69.5]) by fllv0039.itg.ti.com (8.15.2/8.15.2) with ESMTP id 393D5uZH083516; Tue, 3 Oct 2023 08:05:56 -0500 Date: Tue, 3 Oct 2023 08:05:56 -0500 From: Nishanth Menon To: Ayush Singh CC: , , , , , , , , , , , Subject: Re: [PATCH v6 1/3] dt-bindings: Add beaglecc1352 Message-ID: <20231003130556.ateaoj7der45dml6@huddle> References: <20231002182454.211165-1-ayushdevel1325@gmail.com> <20231002182454.211165-2-ayushdevel1325@gmail.com> <20231003113017.z3yyjscvvinwnyy7@putdown> <706a8f30-847c-2641-aeee-6c4d4692e573@gmail.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <706a8f30-847c-2641-aeee-6c4d4692e573@gmail.com> X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231003_060611_532714_BE8EF439 X-CRM114-Status: GOOD ( 17.29 ) 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 On 18:17-20231003, Ayush Singh wrote: > > > + > > > + reset-gpios: > > > + maxItems: 1 > > > + > > > + power-gpios: > > > + maxItems: 3 > > > + description: > > > + The device has three power rails that are exposed on external pins VDDS, > > > + VDDR and DCOUPL. > > Shouldn't these be regulators? The power rails are input to the MCU, > > correct? > > The properties should be something like: > > vdds-supply > > vddr-supply > > dcoupl-supply ? (not sure what dcoupl is, but description should provide > > that info). > > > > the gpio controls for those can be modelled by regulator-gpio ? > > I picked up power lines from "CC13xx/CC26xx Hardware Configuration and PCB > Design Considerations Application Report" present under "8.14 Network > Processor" of CC1352P7 data sheet. > > But now looking closer, it doesn't seem like DCOUPL can be supplied > externally for CC1352P7 and thus should probably be removed. > > Also, it seems like for CC1352P7, VDDR must always be supplied internally > (The data sheet states: "Internal supply, must be powered from the internal > DC/DC converter or the internal LDO"). Thus, it should be safe to remove > VDDR as well. >From Figure 3-1. CC1312R 7x7 RF Part Schematic Overview (app report you point out below) Typical usage is vdds-supply supplying: VDDS (pin 44) VDDS2 (pin 13) VDDS3 (pin 22) VDDS_DCDC (pin 34) And DCDC_SW (pin 33) supplies vddr supplying: VDDR(pin 45) VDDR_RF (Pin 48) > > > That means only VDDS needs to be present for power line. I agree that that would be the typical supply model. So, just vdds-supply > > > CC13xx/CC26xx Hardware Configuration and PCB Design Considerations > Application Report: https://www.ti.com/lit/pdf/swra640 > > CC1352P7 Data sheet: https://www.ti.com/lit/gpn/CC1352P7 -- Regards, Nishanth Menon Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3 1A34 DDB5 849D 1736 249D _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel