From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752114Ab1GSXPu (ORCPT ); Tue, 19 Jul 2011 19:15:50 -0400 Received: from hqemgate03.nvidia.com ([216.228.121.140]:6424 "EHLO hqemgate03.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751674Ab1GSXPt convert rfc822-to-8bit (ORCPT ); Tue, 19 Jul 2011 19:15:49 -0400 X-PGP-Universal: processed; by hqnvupgp06.nvidia.com on Tue, 19 Jul 2011 16:15:38 -0700 From: Stephen Warren To: Andrew Chew , "grant.likely@secretlab.ca" , "olof@lixom.net" , Dan Willemsen , Rhyland Klein , Venkat Moganty CC: "devicetree-discuss@lists.ozlabs.org" , "linux-tegra@vger.kernel.org" , "linux-usb@vger.kernel.org" , "linux-kernel@vger.kernel.org" Date: Tue, 19 Jul 2011 16:15:38 -0700 Subject: RE: [PATCH 2/3] dt: tegra20: Add ehci host controller nodes. Thread-Topic: [PATCH 2/3] dt: tegra20: Add ehci host controller nodes. Thread-Index: AcxGZjibySVyNvOjT6ieM+DaizC9YgAAOLuAAACYjNA= Message-ID: <74CDBE0F657A3D45AFBB94109FB122FF049EBDED36@HQMAIL01.nvidia.com> References: <1311115617-9697-1-git-send-email-achew@nvidia.com> <1311115617-9697-2-git-send-email-achew@nvidia.com> <74CDBE0F657A3D45AFBB94109FB122FF049EBDED27@HQMAIL01.nvidia.com> In-Reply-To: <74CDBE0F657A3D45AFBB94109FB122FF049EBDED27@HQMAIL01.nvidia.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Stephen Warren wrote at Tuesday, July 19, 2011 5:00 PM: > achew@nvidia.com wrote at Tuesday, July 19, 2011 4:47 PM: > > From: Andrew Chew > > > > These values were derived from various headers in arch/arm/mach-tegra. ... > > diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi > > index 83fedf3..a0353bb 100644 > > --- a/arch/arm/boot/dts/tegra20.dtsi > > +++ b/arch/arm/boot/dts/tegra20.dtsi > > @@ -160,5 +160,57 @@ > > interrupts = < 63 >; > > status = "disabled"; > > }; > > + > > + ehci@c5000000 { > > + #address-cells = <1>; > > + #size-cells = <0>; > > + compatible = "nvidia,tegra20-ehci"; > > + reg = <0xc5000000 0x4000>; > > + interrupts = < 52 >; > > + mode = < 1 >; > > + power_down_on_bus_suspend; > > + type = "utmi"; > > + hssync_start_delay = < 0 >; > > + idle_wait_delay = < 17 >; > > + elastic_limit = < 16 >; > > + term_range_adj = < 6 >; > > + xcvr_setup = < 15 >; > > + xcvr_lsfslew = < 2 >; > > + xcvr_lsrslew = < 2 >; > > + status = "disabled"; > > In the latest devicetree/test, tegra20.dtsi doesn't specify status for > any nodes, but leaves everything enabled. Instead, board-specific files > disable any unused devices. Andrew pointed out that isn't actually true right now. However, Grant did state that he was *going* to make Tegra work that way, so the comment basically still stands. -- nvpublic