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| author | Stefan Wahren <wahrenst@gmx.net> | 2024-09-30 12:30:56 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2024-10-01 00:31:40 +0300 |
| commit | 667b5e803a94f1ce48ac85b3fef94891a8d40ccf (patch) | |
| tree | 5618ac99a473e6e5b2abd44afc2f00372a0d6a3b | |
| parent | 7086f49dc442837996c08350a4d590e790b499db (diff) | |
| download | linux-667b5e803a94f1ce48ac85b3fef94891a8d40ccf.tar.xz | |
spi: spi-fsl-lpspi: support effective_speed_hz
Setting spi_transfer->effective_speed_hz in transfer_one so that
SPI client driver can use it.
Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20240930093056.93418-4-wahrenst@gmx.net
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | drivers/spi/spi-fsl-lpspi.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/spi/spi-fsl-lpspi.c b/drivers/spi/spi-fsl-lpspi.c index 3b5aa91079ae..5d55ef4d4ba6 100644 --- a/drivers/spi/spi-fsl-lpspi.c +++ b/drivers/spi/spi-fsl-lpspi.c @@ -92,6 +92,7 @@ struct lpspi_config { u8 prescale; u16 mode; u32 speed_hz; + u32 effective_speed_hz; }; struct fsl_lpspi_data { @@ -351,6 +352,9 @@ static int fsl_lpspi_set_bitrate(struct fsl_lpspi_data *fsl_lpspi) writel(scldiv | (scldiv << 8) | ((scldiv >> 1) << 16), fsl_lpspi->base + IMX7ULP_CCR); + fsl_lpspi->config.effective_speed_hz = perclk_rate / (scldiv + 2) * + (1 << prescale); + dev_dbg(fsl_lpspi->dev, "perclk=%u, speed=%u, prescale=%u, scldiv=%d\n", perclk_rate, config.speed_hz, prescale, scldiv); @@ -750,6 +754,8 @@ static int fsl_lpspi_transfer_one(struct spi_controller *controller, if (ret < 0) return ret; + t->effective_speed_hz = fsl_lpspi->config.effective_speed_hz; + fsl_lpspi_set_cmd(fsl_lpspi); fsl_lpspi->is_first_byte = false; |