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drivers: i2c_ll_stm32_v2: add warning about i2c speeds above fast

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The i2c_ll_stm32_v2 driver requires manual timing configuration for
"fast mode plus" speed.
This adds an error message linking to the appropriate documentation.

Signed-off-by: Jonas Otto <jonas@jonasotto.com>
This commit is contained in:
Jonas Otto 2023-09-21 23:24:36 +02:00 • committed by Carles Cufí
commit 1402d2d8b4
1 changed files with 2 additions and 0 deletions
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2
drivers/i2c/i2c_ll_stm32_v2.c
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@ -702,6 +702,8 @@ int stm32_i2c_configure_timing(const struct device *dev, uint32_t clock)
i2c_setup_time_min = 500U; i2c_setup_time_min = 500U;
break; break;
default: default:
LOG_ERR("i2c: speed above \"fast\" requires manual timing configuration, "
"see \"timings\" property of st,stm32-i2c-v2 devicetree binding");
return -EINVAL; return -EINVAL;
} }