From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH] net/smsc911x: Add minimal runtime PM support Date: Mon, 24 Nov 2014 16:42:04 -0500 (EST) Message-ID: <20141124.164204.382324382412456341.davem@davemloft.net> References: <1416855497-6479-1-git-send-email-geert+renesas@glider.be> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: steve.glendinning@shawell.net, netdev@vger.kernel.org, linux-pm@vger.kernel.org, linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org To: geert+renesas@glider.be Return-path: In-Reply-To: <1416855497-6479-1-git-send-email-geert+renesas@glider.be> Sender: linux-pm-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: Geert Uytterhoeven Date: Mon, 24 Nov 2014 19:58:17 +0100 > Add minimal runtime PM support (enable on probe, disable on remove), to > ensure proper operation with a parent device that uses runtime PM. > > This is needed on systems where the external bus controller module of > the SoC is contained in a PM domain and/or has a gateable functional > clock. In such cases, before accessing any device connected to the > external bus, the PM domain must be powered up, and/or the functional > clock must be enabled, which is typically handled through runtime PM by > the bus controller driver. > > An example of this is the kzm9g development board, where an smsc9220 > Ethernet controller is connected to the Bus State Controller (BSC) of a > Renesas sh73a0 SoC. > > Signed-off-by: Geert Uytterhoeven Applied to net-next, thanks!