6.8-stable review patch. If anyone has any objections, please let me know.
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From: Conor Dooley conor.dooley@microchip.com
commit ef13561d2b163ac0ae6befa53bca58a26dc3320b upstream.
Before ORing the new clock rate with the control register value read from the hardware, the existing clock rate needs to be masked off as otherwise the existing value will interfere with the new one.
CC: stable@vger.kernel.org Fixes: 8596124c4c1b ("spi: microchip-core-qspi: Add support for microchip fpga qspi controllers") Signed-off-by: Conor Dooley conor.dooley@microchip.com Reviewed-by: Tudor Ambarus tudor.ambarus@linaro.org Link: https://lore.kernel.org/r/20240508-fox-unpiloted-b97e1535627b@spud Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/spi/spi-microchip-core-qspi.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/spi/spi-microchip-core-qspi.c +++ b/drivers/spi/spi-microchip-core-qspi.c @@ -283,6 +283,7 @@ static int mchp_coreqspi_setup_clock(str }
control = readl_relaxed(qspi->regs + REG_CONTROL); + control &= ~CONTROL_CLKRATE_MASK; control |= baud_rate_val << CONTROL_CLKRATE_SHIFT; writel_relaxed(control, qspi->regs + REG_CONTROL); control = readl_relaxed(qspi->regs + REG_CONTROL);