[RFC PATCH 2/2] i2c: at91: provide bus_freq_hz

[Tudor Ambarus <tudor.ambarus@microchip.com>]

The clock-frequency property is not mandatory for the i2c buses. If it's
not present in device tree, the buses usually assume that is 100kHZ.
There are i2c clients that need to know the clock frequency in order to
compute their wake token. Spare the clients of making (wrong) assumptions
and provide the bus frequency in adapter.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
---
 drivers/i2c/busses/i2c-at91.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c
index bfd1fdf..d3cd84e 100644
--- a/drivers/i2c/busses/i2c-at91.c
+++ b/drivers/i2c/busses/i2c-at91.c
@@ -1116,6 +1116,7 @@ static int at91_twi_probe(struct platform_device *pdev)
 	dev->adapter.quirks = &at91_twi_quirks;
 	dev->adapter.dev.parent = dev->dev;
 	dev->adapter.nr = pdev->id;
+	dev->adapter.bus_freq_hz = bus_clk_rate;
 	dev->adapter.timeout = AT91_I2C_TIMEOUT;
 	dev->adapter.dev.of_node = pdev->dev.of_node;
 
-- 
2.9.4