linux-kernel - [PATCH 0/2] Add PCI mode support for BayTrail LPSS SPI

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Message-Id: <1397751967-20250-1-git-send-email-chiau.ee.chew@intel.com>
Date:	Fri, 18 Apr 2014 00:26:05 +0800
From:	Chew Chiau Ee <chiau.ee.chew@...el.com>
To:	Eric Miao <eric.y.miao@...il.com>,
	Russell King <linux@....linux.org.uk>,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	Mark Brown <broonie@...nel.org>
Cc:	Chew Chiau Ee <chiau.ee.chew@...el.com>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] Add PCI mode support for BayTrail LPSS SPI

From: Chew, Chiau Ee <chiau.ee.chew@...el.com>

Hi,

BayTrail LPSS subsystem consists of one SPI host which can be PCI
enumerated. PXA2XX PCI layer used to support only CE4100's SPI. Thus,
we convert it into a generic PCI layer to add support for LPSS
SPI as well.

Since PCI mode LPSS SPI does not rely on common clock framework, we
need a mechanism to pass in the host supported clock rate to core layer.
Thus, we introduced a new member known as "max_clk_rate" under struct
pxa2xx_spi_master which can be used in PCI glue layer to pass in
host supported clock rate info.

Chew, Chiau Ee (2):
  spi/pxa2xx-pci: Add PCI mode support for BayTrail LPSS SPI
  spi/pxa2xx-pci: Pass host clock rate info from PCI glue layer

 Documentation/spi/pxa2xx       |    3 ++
 drivers/spi/spi-pxa2xx-pci.c   |   79 ++++++++++++++++++++++++++++++++--------
 drivers/spi/spi-pxa2xx.c       |    2 +
 include/linux/spi/pxa2xx_spi.h |    1 +
 4 files changed, 70 insertions(+), 15 deletions(-)

-- 
1.7.4.4

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