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spi: spi-imx: spi_imx_transfer(): add support for effective_speed_hz

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This patch implementes the reporting of the effectivly used speed_hz for the
transfer by setting tfr->effective_speed_hz.

See the following patch, which adds this feature to the SPI core for more
information:

    5d7e2b5ed5 spi: core: allow reporting the effectivly used speed_hz for a transfer

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Link: https://lore.kernel.org/r/20200917202420.1914104-1-mkl@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Marc Kleine-Budde 2020-09-17 22:24:20 +02:00 committed by Mark Brown
parent 7b1d968133
commit bf253e6bf6
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drivers/spi/spi-imx.c
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@ -1503,6 +1503,8 @@ static int spi_imx_transfer(struct spi_device *spi,
{
struct spi_imx_data *spi_imx = spi_master_get_devdata(spi->master);
transfer->effective_speed_hz = spi_imx->spi_bus_clk;
/* flush rxfifo before transfer */
while (spi_imx->devtype_data->rx_available(spi_imx))
readl(spi_imx->base + MXC_CSPIRXDATA);