From mboxrd@z Thu Jan 1 00:00:00 1970 From: Darren Hart Subject: Re: [PATCH 0/4 V2] pch_uart: Cleanups, board quirks, and user uartclk parameter Date: Wed, 29 Feb 2012 18:07:52 -0800 Message-ID: <4F4ED9F8.3010706@linux.intel.com> References: <4F4EC73E.40209@linux.intel.com> <4F4ECCE8.90207@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-2022-JP Content-Transfer-Encoding: 7bit Return-path: Received: from mga09.intel.com ([134.134.136.24]:56466 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752836Ab2CACI2 (ORCPT ); Wed, 29 Feb 2012 21:08:28 -0500 In-Reply-To: Sender: linux-serial-owner@vger.kernel.org List-Id: linux-serial@vger.kernel.org To: Tomoya MORINAGA Cc: Alan Cox , Linux Kernel Mailing List , Feng Tang , Greg Kroah-Hartman , linux-serial@vger.kernel.org On 02/29/2012 06:06 PM, Tomoya MORINAGA wrote: > 2012年3月1日10:12 Darren Hart : >> Perhaps a pch_phub.bios_uartclk parameter could be used for setting up >> the initial console and once the phub driver is loaded, it can make the >> necessary changes and fix things up in the uart port? > > Yes, once phub driver is installed, uart works with new clock set by phub. > >> This would add a binding between the pch_uart and pch_phub code. > What does the above "binding" mean ? > Just that currently I can build pch_uart without the pch_phub driver. It seems if we were to attempt the above, the pch_uart code would then require the pch_phub driver and the pch_phub driver would need to know how to trigger the pch_uart code to setup the uart port again with the new clock setting. -- Darren Hart Intel Open Source Technology Center Yocto Project - Linux Kernel