diff options
| author | Conor Dooley <conor.dooley@microchip.com> | 2025-06-20 16:28:24 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2025-06-23 23:33:53 +0300 |
| commit | 76f03ce1c6f22805ecf689b1f3ecfb56582eddd5 (patch) | |
| tree | a856ad764a7f90e1caa1c87f73dbe2b258b3e391 /drivers/spi/spi-microchip-core-qspi.c | |
| parent | 86731a2a651e58953fc949573895f2fa6d456841 (diff) | |
| download | linux-76f03ce1c6f22805ecf689b1f3ecfb56582eddd5.tar.xz | |
spi: microchip-core-qspi: set min_speed_hz during probe
The controller's minimum possible bus clock is 1/30 the rate of the
input clock. Naively set the minimum bus clock speed the controller
is capable of during probe, assuming that the rate will never reduce
further.
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20250620-drained-widen-ac311bd5f172@spud
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-microchip-core-qspi.c')
| -rw-r--r-- | drivers/spi/spi-microchip-core-qspi.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/spi/spi-microchip-core-qspi.c b/drivers/spi/spi-microchip-core-qspi.c index fa828fcaaef2..111ae6519ff4 100644 --- a/drivers/spi/spi-microchip-core-qspi.c +++ b/drivers/spi/spi-microchip-core-qspi.c @@ -562,6 +562,7 @@ static int mchp_coreqspi_probe(struct platform_device *pdev) ctlr->mode_bits = SPI_CPOL | SPI_CPHA | SPI_RX_DUAL | SPI_RX_QUAD | SPI_TX_DUAL | SPI_TX_QUAD; ctlr->dev.of_node = np; + ctlr->min_speed_hz = clk_get_rate(qspi->clk) / 30; ret = devm_spi_register_controller(&pdev->dev, ctlr); if (ret) |