Unverified Commit c6892892 authored by Richard Fitzgerald's avatar Richard Fitzgerald Committed by Mark Brown
Browse files

spi: bcm2835: Set controller max_speed_hz 



Set the struct spi_controller max_speed_hz. This is based on the
reported source clock frequency during probe. The maximum bus clock
is half the source clock (as per the code in bcm2835_spi_transfer_one).

Signed-off-by: default avatarRichard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20210107164825.21919-1-rf@opensource.cirrus.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 72366b3c

drivers/spi/spi-bcm2835.c

+2 −0
Original line number Diff line number Diff line
@@ -1307,6 +1307,8 @@ static int bcm2835_spi_probe(struct platform_device *pdev) 
		return dev_err_probe(&pdev->dev, PTR_ERR(bs->clk),

				     "could not get clk\n");



	ctlr->max_speed_hz = clk_get_rate(bs->clk) / 2;



	bs->irq = platform_get_irq(pdev, 0);

	if (bs->irq <= 0)

		return bs->irq ? bs->irq : -ENODEV;