From: Tomasz Gorochowik tgorochowik@antmicro.com
This is needed to properly calculate i2c bus speed divisors.
Signed-off-by: Tomasz Gorochowik tgorochowik@antmicro.com Signed-off-by: Wojciech Tatarski wtatarski@antmicro.com Signed-off-by: Michal Simek michal.simek@xilinx.com ---
drivers/i2c/i2c-cdns.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/i2c/i2c-cdns.c b/drivers/i2c/i2c-cdns.c index 30be173343dd..f2c4b2073c48 100644 --- a/drivers/i2c/i2c-cdns.c +++ b/drivers/i2c/i2c-cdns.c @@ -17,6 +17,7 @@ #include <fdtdec.h> #include <mapmem.h> #include <wait_bit.h> +#include <clk.h>
/* i2c register set */ struct cdns_i2c_regs { @@ -415,6 +416,8 @@ static int cdns_i2c_ofdata_to_platdata(struct udevice *dev) struct i2c_cdns_bus *i2c_bus = dev_get_priv(dev); struct cdns_i2c_platform_data *pdata = (struct cdns_i2c_platform_data *)dev_get_driver_data(dev); + struct clk clk; + int ret;
i2c_bus->regs = (struct cdns_i2c_regs *)devfdt_get_addr(dev); if (!i2c_bus->regs) @@ -423,7 +426,11 @@ static int cdns_i2c_ofdata_to_platdata(struct udevice *dev) if (pdata) i2c_bus->quirks = pdata->quirks;
- i2c_bus->input_freq = 100000000; /* TODO hardcode input freq for now */ + ret = clk_get_by_index(dev, 0, &clk); + if (ret) + return ret; + + i2c_bus->input_freq = clk_get_rate(&clk);
return 0; }