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| author | Simon Glass <sjg@chromium.org> | 2020-07-07 21:32:27 -0600 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2020-07-17 14:32:24 +0800 |
| commit | 767abfc6ce326e00abd907a643779c13e13839bf (patch) | |
| tree | e3b03e2b9848051ff95e0448ebe00e08b5cae808 /drivers | |
| parent | 43ee86cc4bb96686996f31071ce7da8c0c99fec5 (diff) | |
| download | u-boot-767abfc6ce326e00abd907a643779c13e13839bf.zip u-boot-767abfc6ce326e00abd907a643779c13e13839bf.tar.gz u-boot-767abfc6ce326e00abd907a643779c13e13839bf.tar.bz2 | |
i2c: designware_i2c: Add a little more debugging
Add debugging for a few more values and also use log to show return values
when something goes wrong. This makes it easier to see the root cause.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/i2c/designware_i2c.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/i2c/designware_i2c.c b/drivers/i2c/designware_i2c.c index 3616e21..44a1f33 100644 --- a/drivers/i2c/designware_i2c.c +++ b/drivers/i2c/designware_i2c.c @@ -160,9 +160,9 @@ static int dw_i2c_calc_timing(struct dw_i2c *priv, enum i2c_speed_mode mode, min_tlow_cnt = calc_counts(ic_clk, info->min_scl_lowtime_ns); min_thigh_cnt = calc_counts(ic_clk, info->min_scl_hightime_ns); - debug("dw_i2c: period %d rise %d fall %d tlow %d thigh %d spk %d\n", - period_cnt, rise_cnt, fall_cnt, min_tlow_cnt, min_thigh_cnt, - spk_cnt); + debug("dw_i2c: mode %d, ic_clk %d, speed %d, period %d rise %d fall %d tlow %d thigh %d spk %d\n", + mode, ic_clk, info->speed, period_cnt, rise_cnt, fall_cnt, + min_tlow_cnt, min_thigh_cnt, spk_cnt); /* * Back-solve for hcnt and lcnt according to the following equations: @@ -174,7 +174,7 @@ static int dw_i2c_calc_timing(struct dw_i2c *priv, enum i2c_speed_mode mode, if (hcnt < 0 || lcnt < 0) { debug("dw_i2c: bad counts. hcnt = %d lcnt = %d\n", hcnt, lcnt); - return -EINVAL; + return log_msg_ret("counts", -EINVAL); } /* @@ -713,7 +713,7 @@ static int designware_i2c_set_bus_speed(struct udevice *bus, unsigned int speed) #if CONFIG_IS_ENABLED(CLK) rate = clk_get_rate(&i2c->clk); if (IS_ERR_VALUE(rate)) - return -EINVAL; + return log_ret(-EINVAL); #else rate = IC_CLK; #endif |