From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Brown Subject: Re: [PATCH v2 3/4] arm/dts: Add tps65910 regulator DT data to am335x-evm.dts Date: Wed, 15 Aug 2012 13:53:39 +0100 Message-ID: <20120815125338.GA13544@opensource.wolfsonmicro.com> References: <1343110735-10640-1-git-send-email-anilkumar@ti.com> <1343110735-10640-4-git-send-email-anilkumar@ti.com> <331ABD5ECB02734CA317220B2BBEABC13EA1293E@DBDE01.ent.ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from opensource.wolfsonmicro.com ([80.75.67.52]:56827 "EHLO opensource.wolfsonmicro.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754150Ab2HOMxl (ORCPT ); Wed, 15 Aug 2012 08:53:41 -0400 Content-Disposition: inline In-Reply-To: <331ABD5ECB02734CA317220B2BBEABC13EA1293E@DBDE01.ent.ti.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: "AnilKumar, Chimata" Cc: "linux-arm-kernel@lists.infradead.org" , "linux-omap@vger.kernel.org" , "tony@atomide.com" On Tue, Aug 14, 2012 at 02:25:18PM +0000, AnilKumar, Chimata wrote: > AM335x EVM have one dedicated input supply which provide supplies to all > the PMIC regulators. According to tps65910 "VDD1 regulator" input supply > is from vcc1 so we have to create a dummy/parent/some node to handle this. > Example below has the details. Your device tree should accurately reflect the hardware. > Similarly we have to add 7 more fixed regulators entries to provide input > supply to different PMIC regulators. If you have all these unrelated supplies in the system then your device tree should accurately reflect that. However this would be a very unusual hardware design. Usually there would be a very small set of system supply rails, frequently only one. From mboxrd@z Thu Jan 1 00:00:00 1970 From: broonie@opensource.wolfsonmicro.com (Mark Brown) Date: Wed, 15 Aug 2012 13:53:39 +0100 Subject: [PATCH v2 3/4] arm/dts: Add tps65910 regulator DT data to am335x-evm.dts In-Reply-To: <331ABD5ECB02734CA317220B2BBEABC13EA1293E@DBDE01.ent.ti.com> References: <1343110735-10640-1-git-send-email-anilkumar@ti.com> <1343110735-10640-4-git-send-email-anilkumar@ti.com> <331ABD5ECB02734CA317220B2BBEABC13EA1293E@DBDE01.ent.ti.com> Message-ID: <20120815125338.GA13544@opensource.wolfsonmicro.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Aug 14, 2012 at 02:25:18PM +0000, AnilKumar, Chimata wrote: > AM335x EVM have one dedicated input supply which provide supplies to all > the PMIC regulators. According to tps65910 "VDD1 regulator" input supply > is from vcc1 so we have to create a dummy/parent/some node to handle this. > Example below has the details. Your device tree should accurately reflect the hardware. > Similarly we have to add 7 more fixed regulators entries to provide input > supply to different PMIC regulators. If you have all these unrelated supplies in the system then your device tree should accurately reflect that. However this would be a very unusual hardware design. Usually there would be a very small set of system supply rails, frequently only one.