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| author | Naveen Krishna Ch <ch.naveen@samsung.com> | 2014-04-28 14:29:58 +0530 |
|---|---|---|
| committer | Hyungwon Hwang <human.hwang@samsung.com> | 2014-12-17 16:18:04 +0900 |
| commit | db92996a5fe9da929a11dcc4cc97e17fbf38623b (patch) | |
| tree | 73032c99937ac0937cbc10c2fce764f225d8fb82 /Documentation | |
| parent | 1d597a2e4ea0bd4e22f0845bc30eca30585907b3 (diff) | |
| download | linux-3.10-db92996a5fe9da929a11dcc4cc97e17fbf38623b.tar.gz linux-3.10-db92996a5fe9da929a11dcc4cc97e17fbf38623b.tar.bz2 linux-3.10-db92996a5fe9da929a11dcc4cc97e17fbf38623b.zip | |
i2c: exynos5: add support for HSI2C on Exynos5260 SoC
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>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/i2c/i2c-exynos5.txt | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/i2c/i2c-exynos5.txt b/Documentation/devicetree/bindings/i2c/i2c-exynos5.txt index 056732cfdce..d4745e31f5c 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-exynos5.txt +++ b/Documentation/devicetree/bindings/i2c/i2c-exynos5.txt @@ -5,7 +5,14 @@ at various speeds ranging from 100khz to 3.4Mhz. Required properties: - compatible: value should be. - -> "samsung,exynos5-hsi2c", for i2c compatible with exynos5 hsi2c. + -> "samsung,exynos5-hsi2c", (DEPRECATED) + for i2c compatible with HSI2C available + on Exynos5250 and Exynos5420 SoCs. + -> "samsung,exynos5250-hsi2c", for i2c compatible with HSI2C available + on Exynos5250 and Exynos5420 SoCs. + -> "samsung,exynos5260-hsi2c", for i2c compatible with HSI2C available + on Exynos5260 SoCs. + - reg: physical base address of the controller and length of memory mapped region. - interrupts: interrupt number to the cpu. @@ -26,7 +33,7 @@ Optional properties: Example: hsi2c@12ca0000 { - compatible = "samsung,exynos5-hsi2c"; + compatible = "samsung,exynos5250-hsi2c"; reg = <0x12ca0000 0x100>; interrupts = <56>; clock-frequency = <100000>; |