i2c: exynos5: add support for HSI2C on Exynos5260 SoC

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HSI2C module on Exynos5260 differs from current modules in
following ways:
1.  HSI2C on Exynos5260 has fifo_depth of 16bytes
2.  Module needs to be reset as a part of init sequence.

Hence, Following changes are involved.
1. Add a new compatible string and Updates the Documentation dt bindings.
2. Introduce a variant struct to support the changes in H/W
3. Reset the module during init. Thus, bringing the module back
to default state irrespective of what firmware did with it.

Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

...

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Naveen Krishna Ch 2014-04-28 14:29:58 +05:30 • committed by Wolfram Sang

parent a83bea7c11

commit 218e149613

2 changed files with 64 additions and 14 deletions

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11

Documentation/devicetree/bindings/i2c/i2c-exynos5.txt

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67

drivers/i2c/busses/i2c-exynos5.c

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