From 4a7b9ee15ee0c5aa38bce0e32263fbb11572b475 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Wed, 31 May 2017 17:57:18 -0600 Subject: [PATCH] tegra: spi: Wait a little after setting the clocks For devices that need a delay between SPI transactions we seem to need an additional delay before the first one if the CPU is running at full speed. Add this, under control of the existing setting. At present it will only be enabled with the Chrome OS EC. Signed-off-by: Simon Glass --- drivers/spi/tegra114_spi.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/spi/tegra114_spi.c b/drivers/spi/tegra114_spi.c index 802117eb49..91659349a3 100644 --- a/drivers/spi/tegra114_spi.c +++ b/drivers/spi/tegra114_spi.c @@ -152,6 +152,7 @@ static int tegra114_spi_probe(struct udevice *bus) bus->name, priv->freq, rate); } } + udelay(plat->deactivate_delay_us); /* Clear stale status here */ setbits_le32(®s->fifo_status, -- GitLab