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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>
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@ -17,6 +17,7 @@
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#include <fdtdec.h>
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#include <mapmem.h>
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#include <wait_bit.h>
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#include <clk.h>
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/* i2c register set */
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struct cdns_i2c_regs {
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@ -415,6 +416,8 @@ static int cdns_i2c_ofdata_to_platdata(struct udevice *dev)
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struct i2c_cdns_bus *i2c_bus = dev_get_priv(dev);
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struct cdns_i2c_platform_data *pdata =
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(struct cdns_i2c_platform_data *)dev_get_driver_data(dev);
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struct clk clk;
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int ret;
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i2c_bus->regs = (struct cdns_i2c_regs *)devfdt_get_addr(dev);
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if (!i2c_bus->regs)
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@ -423,7 +426,11 @@ static int cdns_i2c_ofdata_to_platdata(struct udevice *dev)
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if (pdata)
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i2c_bus->quirks = pdata->quirks;
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i2c_bus->input_freq = 100000000; /* TODO hardcode input freq for now */
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ret = clk_get_by_index(dev, 0, &clk);
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if (ret)
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return ret;
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i2c_bus->input_freq = clk_get_rate(&clk);
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return 0;
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}
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