diff options
| author | Tomasz Gorochowik <tgorochowik@antmicro.com> | 2019-01-03 13:36:33 +0100 |
|---|---|---|
| committer | Heiko Schocher <hs@denx.de> | 2019-01-15 09:04:49 +0100 |
| commit | f48ef0d81aa837a33020f8d61abb3929ba613774 (patch) | |
| tree | 7b83a9690f915a4a25d7259e2d374adcaa761e50 /drivers | |
| parent | ad827a500b44a0969d9f835850db23b479eb2c44 (diff) | |
i2c: i2c-cdns: Use proper input frequency
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/i2c/i2c-cdns.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/i2c/i2c-cdns.c b/drivers/i2c/i2c-cdns.c index 30be173343..f2c4b2073c 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; } |