diff options
| -rw-r--r-- | drivers/i2c/busses/i2c-img-scb.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/i2c/busses/i2c-img-scb.c b/drivers/i2c/busses/i2c-img-scb.c index 0fa47158dbe4..3795fe130ef2 100644 --- a/drivers/i2c/busses/i2c-img-scb.c +++ b/drivers/i2c/busses/i2c-img-scb.c @@ -1130,9 +1130,6 @@ static int img_i2c_init(struct img_i2c *i2c) /* Fencing enabled by default. */ i2c->need_wr_rd_fence = true; - bitrate_khz = i2c->bitrate / 1000; - clk_khz = clk_get_rate(i2c->scb_clk) / 1000; - /* Determine what mode we're in from the bitrate */ timing = timings[0]; for (i = 0; i < ARRAY_SIZE(timings); i++) { @@ -1141,6 +1138,17 @@ static int img_i2c_init(struct img_i2c *i2c) break; } } + if (i2c->bitrate > timings[ARRAY_SIZE(timings) - 1].max_bitrate) { + dev_warn(i2c->adap.dev.parent, + "requested bitrate (%u) is higher than the max bitrate supported (%u)\n", + i2c->bitrate, + timings[ARRAY_SIZE(timings) - 1].max_bitrate); + timing = timings[ARRAY_SIZE(timings) - 1]; + i2c->bitrate = timing.max_bitrate; + } + + bitrate_khz = i2c->bitrate / 1000; + clk_khz = clk_get_rate(i2c->scb_clk) / 1000; /* Find the prescale that would give us that inc (approx delay = 0) */ prescale = SCB_OPT_INC * clk_khz / (256 * 16 * bitrate_khz); |