Hi,

I was too busy in another project but now I am ready to complete the
upstream of the STM32F4 I2C driver.

Nice.

quoted

quoted

+static void stm32f4_i2c_set_periph_clk_freq(struct stm32f4_i2c_dev *i2c_dev)
+{
+     u32 clk_rate, cr2, freq;
+
+     cr2 = readl_relaxed(i2c_dev->base + STM32F4_I2C_CR2);
+     cr2 &= ~STM32F4_I2C_CR2_FREQ_MASK;
+
+     clk_rate = clk_get_rate(i2c_dev->clk);
+     freq = clk_rate / MHZ_TO_HZ;
+
+     if (freq > STM32F4_I2C_MAX_FREQ)
+             freq = STM32F4_I2C_MAX_FREQ;
+     if (freq < STM32F4_I2C_MIN_FREQ)
+             freq = STM32F4_I2C_MIN_FREQ;

clamp() to enforce the range?

Sorry but what do you mean by "clamp()" ?

The kernel has a clamp() function which would fit this purpose, I think.

Regards,

   Wolfram

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