From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Walmsley Subject: [PATCH 0/2] tty: serial: OMAP: work around broken driver, IP block Date: Sat, 21 Jan 2012 00:27:37 -0700 Message-ID: <20120121071934.18707.64258.stgit@dusk> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: Received: from utopia.booyaka.com ([72.9.107.138]:59293 "EHLO utopia.booyaka.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751049Ab2AUHaV (ORCPT ); Sat, 21 Jan 2012 02:30:21 -0500 Sender: linux-serial-owner@vger.kernel.org List-Id: linux-serial@vger.kernel.org To: linux-omap@vger.kernel.org, linux-serial@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Govindraj Raja , Kevin Hilman , Tomi Valkeinen , alan@linux.intel.com [ This series is targeted for merging during v3.3-rc ] On v3.3-rc1, the OMAP serial console doesn't behave properly when power management is enabled (the default with omap2plus_defconfig). This seems to be due to a combination of a silicon bug in the UART IP block and broken FIFO settings in the OMAP serial driver. This patch series attempts to work around these problems. The workarounds are not perfect; see the patch descriptions for more details. Tested on OMAP3530 BeagleBoard. This series will need to be tested on OMAP2 and OMAP4 before it is ready to merge. - Paul --- Paul Walmsley (2): tty: serial: OMAP: ensure FIFO levels are set correctly in non-DMA mode tty: serial: OMAP: transmit FIFO threshold interrupts don't wake the chip arch/arm/plat-omap/include/plat/omap-serial.h | 1 drivers/tty/serial/omap-serial.c | 86 ++++++++++++++++++++++++- 2 files changed, 82 insertions(+), 5 deletions(-)