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kernel: i2c-stm.c - change I2C communication rate (speedup)

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This commit is contained in:
Jaroslav Kysela 2015-04-17 11:38:11 +02:00
parent e9b0aad3a3
commit 7634ebccd6
1 changed files with 4 additions and 0 deletions
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4
kernel/drivers/i2c/busses/i2c-stm.c
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@ -1044,6 +1044,10 @@ static void iic_stm_setup_timing(struct iic_ssc *adap)
clock = clk_get_rate(adap->clk) + 500000; /* +0.5 Mhz for rounding */ clock = clk_get_rate(adap->clk) + 500000; /* +0.5 Mhz for rounding */
ns_per_clk = NANOSEC_PER_SEC / clock; ns_per_clk = NANOSEC_PER_SEC / clock;
printk("stm i2c clock = %lu, ns_per_clk = %lu\n", clock, ns_per_clk);
clock = clock / 2;
ns_per_clk = NANOSEC_PER_SEC / clock;
printk("stm i2c modified clock = %lu, ns_per_clk = %lu\n", clock, ns_per_clk);
if (check_fastmode(adap)) { if (check_fastmode(adap)) {
set_ready_fastmode(adap); set_ready_fastmode(adap);