diff options
| -rw-r--r-- | src/soc/rockchip/rk3288/i2c.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/soc/rockchip/rk3288/i2c.c b/src/soc/rockchip/rk3288/i2c.c index 142ec4a489..eb480a7d30 100644 --- a/src/soc/rockchip/rk3288/i2c.c +++ b/src/soc/rockchip/rk3288/i2c.c @@ -284,7 +284,7 @@ void i2c_init(unsigned int bus, unsigned int hz) unsigned int clk_div; unsigned int divl; unsigned int divh; - unsigned int i2c_src_clk; + unsigned int i2c_src_clk = 0; struct rk3288_i2c_regs *regs = i2c_bus[bus]; /*i2c0,i2c2 src clk from pd_bus_pclk @@ -308,9 +308,9 @@ void i2c_init(unsigned int bus, unsigned int hz) /*SCL Divisor = 8*(CLKDIVL + 1 + CLKDIVH + 1) SCL = PCLK/ SCLK Divisor */ - clk_div = div_round_up(i2c_src_clk, hz * 8) - 2; - divh = clk_div / 2; - divl = ALIGN_UP(clk_div, 2) / 2; + clk_div = div_round_up(i2c_src_clk, hz * 8); + divh = clk_div * 3 / 7 - 1; + divl = clk_div - divh - 2; assert((divh < 65536) && (divl < 65536)); writel((divh << 16) | (divl << 0), ®s->i2c_clkdiv); } |