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authorAllen Martin <amartin@nvidia.com>2013-01-29 13:51:28 +0000
committerTom Warren <twarren@nvidia.com>2013-02-11 10:35:25 -0700
commitb19f57491a39542c9916367a9041199cb547d0e8 (patch)
treeb7f02f03826cf51ab564ee92df7c0277b89f0542 /board/cm-bf527
parent91673e2adf8686aa0bb0cb184a4e000b77851f0f (diff)
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tegra: add SPI SLINK driver
Add driver for tegra SPI "SLINK" style driver. This controller is similar to the tegra20 SPI "SFLASH" controller. The difference is that the SLINK controller is a genernal purpose SPI controller and the SFLASH controller is special purpose and can only talk to FLASH devices. In addition there are potentially many instances of an SLINK controller on tegra and only a single instance of SFLASH. Tegra20 is currently ths only version of tegra that instantiates an SFLASH controller. This driver supports basic PIO mode of operation and is configurable (CONFIG_OF_CONTROL) to be driven off devicetree bindings. Up to 4 devices per controller may be attached, although typically only a single chip select line is exposed from tegra per controller so in reality this is usually limited to 1. To enable this driver, use CONFIG_TEGRA_SLINK Signed-off-by: Allen Martin <amartin@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
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