From mboxrd@z Thu Jan 1 00:00:00 1970 From: gmbnomis@gmail.com (Simon Baatz) Date: Wed, 30 Jan 2013 21:50:36 +0100 Subject: [PATCH] ARM: kirkwood: of_serial: fix clock gating by removing clock-frequency In-Reply-To: <1359493774-27627-1-git-send-email-jason@lakedaemon.net> References: <1359493774-27627-1-git-send-email-jason@lakedaemon.net> Message-ID: <20130130205035.GA20203@schnuecks.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi Jason, On Tue, Jan 29, 2013 at 09:09:34PM +0000, Jason Cooper wrote: > When DT support for kirkwood was first introduced, there was no clock > infrastructure. As a result, we had to manually pass the > clock-frequency to the driver from the device node. > > Unfortunately, on kirkwood, with minimal config or all module configs, > clock-frequency breaks booting because of_serial doesn't consume the > gate_clk when clock-frequency is defined. > > The end result on kirkwood is that runit gets gated, and then the boot > fails when the kernel tries to write to the serial port. > > Fix the issue by removing the clock-frequency parameter from all > kirkwood dts files. > > Booted on dreamplug without earlyprintk and successfully logged in via > ttyS0. > > Reported-by: Simon Baatz > Signed-off-by: Jason Cooper > --- If you like, you can add my Tested-by: Simon Baatz (On IB-NAS6210 serial console, earlyprintk and successful login via ttyS0) - Simon