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i2c: rcar: use per-device clock

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Using the same clock for all device instances is non-portable and obtaining
clock references by an ID without using a device pointer is discouraged.
This is also not needed, because on platforms, where this driver is used,
suitable clocks are available for the I2C controllers, that are children of
the peripheral clock and just pass its rate 1-to-1 to controllers. This
patch switches the driver to obtain references to correct clocks.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Guennadi Liakhovetski 2013-09-12 14:36:48 +02:00 committed by Wolfram Sang
parent 330c824a49
commit 991e7ecf1f
1 changed files with 1 additions and 1 deletions
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2
drivers/i2c/busses/i2c-rcar.c
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@ -227,7 +227,7 @@ static int rcar_i2c_clock_calculate(struct rcar_i2c_priv *priv,
u32 bus_speed,
struct device *dev)
{
struct clk *clkp = clk_get(NULL, "peripheral_clk");
struct clk *clkp = clk_get(dev, NULL);
u32 scgd, cdf;
u32 round, ick;
u32 scl;