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/OK3568_Linux_fs/u-boot/drivers/i2c/
H A Dfsl_i2c.c131 u8 dfsr, fdr = 0x31; /* Default if no FDR found */ in set_i2c_bus_speed() local
137 dfsr = CONFIG_FSL_I2C_CUSTOM_DFSR; in set_i2c_bus_speed()
140 dfsr = (5 * (i2c_clk / 1000)) / 100000; in set_i2c_bus_speed()
147 if (!dfsr) in set_i2c_bus_speed()
148 dfsr = 1; in set_i2c_bus_speed()
154 c_div = b * (a + ((3*dfsr)/b)*2); in set_i2c_bus_speed()
168 (b - 3 * dfsr) * 1000000 / in set_i2c_bus_speed()
177 debug("divider:%d, est_div:%ld, DFSR:%d\n", divider, est_div, dfsr); in set_i2c_bus_speed()
180 writeb(dfsr, &base->dfsrr); /* set default filter */ in set_i2c_bus_speed()