From 8509c55fcb5192b7f70ec596a8752c2ec39942e3 Mon Sep 17 00:00:00 2001 From: Qipan Li Date: Thu, 20 Nov 2014 22:33:07 +0800 Subject: spi: sirf: reset SPI controller in init stage in SPI boot mode, romcode uses SPI controller to fetch data from NOR flash. Here we need to reset the hardware IP to restore its state. Signed-off-by: Qipan Li Signed-off-by: Barry Song Signed-off-by: Mark Brown --- drivers/spi/spi-sirf.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/spi/spi-sirf.c') diff --git a/drivers/spi/spi-sirf.c b/drivers/spi/spi-sirf.c index bf3c6bc77530..0a96a65f580f 100644 --- a/drivers/spi/spi-sirf.c +++ b/drivers/spi/spi-sirf.c @@ -23,6 +23,7 @@ #include #include #include +#include #define DRIVER_NAME "sirfsoc_spi" @@ -647,6 +648,12 @@ static int spi_sirfsoc_probe(struct platform_device *pdev) int irq; int i, ret; + ret = device_reset(&pdev->dev); + if (ret) { + dev_err(&pdev->dev, "SPI reset failed!\n"); + return ret; + } + master = spi_alloc_master(&pdev->dev, sizeof(*sspi)); if (!master) { dev_err(&pdev->dev, "Unable to allocate SPI master\n"); -- cgit v1.2.3