spi: sprd: Fix the incorrect SPI register

commit 5e9c5236b7b86779b53b762f7e66240c3f18314b upstream.

The original code used an incorrect SPI register to initialize the SPI
controller in sprd_spi_init_hw(), thus fix it.

Fixes: e7d973a31c24 ("spi: sprd: Add SPI driver for Spreadtrum SC9860")
Signed-off-by: Huanpeng Xin <huanpeng.xin@unisoc.com>
Signed-off-by: Baolin Wang <baolin.wang7@gmail.com>
Link: https://lore.kernel.org/r/b4f7f89ec0fdc595335687bfbd9f962213bc4a1d.1575443510.git.baolin.wang7@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/spi/spi-sprd.c b/drivers/spi/spi-sprd.c
index 8c9021b..fa597e2 100644 (file)
--- a/drivers/spi/spi-sprd.c
+++ b/drivers/spi/spi-sprd.c
@@ -674,7 +674,7 @@ static void sprd_spi_init_hw(struct sprd_spi *ss, struct spi_transfer *t)
        u16 word_delay, interval;
        u32 val;
 
-       val = readl_relaxed(ss->base + SPRD_SPI_CTL7);
+       val = readl_relaxed(ss->base + SPRD_SPI_CTL0);
        val &= ~(SPRD_SPI_SCK_REV | SPRD_SPI_NG_TX | SPRD_SPI_NG_RX);
        /* Set default chip selection, clock phase and clock polarity */
        val |= ss->hw_mode & SPI_CPHA ? SPRD_SPI_NG_RX : SPRD_SPI_NG_TX;