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    Subject[PATCH 09/13] i2c: nomadik: fetch timeout-usecs property from devicetree
    Allow overriding the default timeout value (200ms) from devicetree,
    using the timeout-usecs property.

    The i2c_adapter->timeout field is an unaccurate jiffies amount;
    i2c-nomadik uses hrtimers for timeouts below one jiffy.

    Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
    ---
    drivers/i2c/busses/i2c-nomadik.c | 9 ++++++++-
    1 file changed, 8 insertions(+), 1 deletion(-)

    diff --git a/drivers/i2c/busses/i2c-nomadik.c b/drivers/i2c/busses/i2c-nomadik.c
    index afd54999bbbb..23e12c570457 100644
    --- a/drivers/i2c/busses/i2c-nomadik.c
    +++ b/drivers/i2c/busses/i2c-nomadik.c
    @@ -964,6 +964,8 @@ static const struct i2c_algorithm nmk_i2c_algo = {
    static void nmk_i2c_of_probe(struct device_node *np,
    struct nmk_i2c_dev *priv)
    {
    + u32 timeout_usecs;
    +
    /* Default to 100 kHz if no frequency is given in the node */
    if (of_property_read_u32(np, "clock-frequency", &priv->clk_freq))
    priv->clk_freq = I2C_MAX_STANDARD_MODE_FREQ;
    @@ -975,7 +977,12 @@ static void nmk_i2c_of_probe(struct device_node *np,
    priv->sm = I2C_FREQ_MODE_FAST;
    priv->tft = 1; /* Tx FIFO threshold */
    priv->rft = 8; /* Rx FIFO threshold */
    - priv->timeout_usecs = 200 * USEC_PER_MSEC; /* Slave response timeout */
    +
    + /* Slave response timeout */
    + if (!of_property_read_u32(np, "timeout-usecs", &timeout_usecs))
    + priv->timeout_usecs = timeout_usecs;
    + else
    + priv->timeout_usecs = 200 * USEC_PER_MSEC;
    }

    static int nmk_i2c_probe(struct amba_device *adev, const struct amba_id *id)
    --
    2.43.1


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