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-rw-r--r--drivers/spi/spi-mt65xx.c20
1 files changed, 8 insertions, 12 deletions
diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c
index 14112a5e63b9..c1e96d3b7030 100644
--- a/drivers/spi/spi-mt65xx.c
+++ b/drivers/spi/spi-mt65xx.c
@@ -238,8 +238,7 @@ static void mtk_spi_set_cs(struct spi_device *spi, bool enable)
static void mtk_spi_prepare_transfer(struct spi_master *master,
struct spi_transfer *xfer)
{
- u32 spi_clk_hz, div, high_time, low_time, holdtime,
- setuptime, cs_idletime, reg_val = 0;
+ u32 spi_clk_hz, div, sck_time, cs_time, reg_val = 0;
struct mtk_spi *mdata = spi_master_get_devdata(master);
spi_clk_hz = clk_get_rate(mdata->spi_clk);
@@ -248,21 +247,18 @@ static void mtk_spi_prepare_transfer(struct spi_master *master,
else
div = 1;
- high_time = (div + 1) / 2;
- low_time = (div + 1) / 2;
- holdtime = (div + 1) / 2 * 2;
- setuptime = (div + 1) / 2 * 2;
- cs_idletime = (div + 1) / 2 * 2;
+ sck_time = (div + 1) / 2;
+ cs_time = sck_time * 2;
- reg_val |= (((high_time - 1) & 0xff) << SPI_CFG0_SCK_HIGH_OFFSET);
- reg_val |= (((low_time - 1) & 0xff) << SPI_CFG0_SCK_LOW_OFFSET);
- reg_val |= (((holdtime - 1) & 0xff) << SPI_CFG0_CS_HOLD_OFFSET);
- reg_val |= (((setuptime - 1) & 0xff) << SPI_CFG0_CS_SETUP_OFFSET);
+ reg_val |= (((sck_time - 1) & 0xff) << SPI_CFG0_SCK_HIGH_OFFSET);
+ reg_val |= (((sck_time - 1) & 0xff) << SPI_CFG0_SCK_LOW_OFFSET);
+ reg_val |= (((cs_time - 1) & 0xff) << SPI_CFG0_CS_HOLD_OFFSET);
+ reg_val |= (((cs_time - 1) & 0xff) << SPI_CFG0_CS_SETUP_OFFSET);
writel(reg_val, mdata->base + SPI_CFG0_REG);
reg_val = readl(mdata->base + SPI_CFG1_REG);
reg_val &= ~SPI_CFG1_CS_IDLE_MASK;
- reg_val |= (((cs_idletime - 1) & 0xff) << SPI_CFG1_CS_IDLE_OFFSET);
+ reg_val |= (((cs_time - 1) & 0xff) << SPI_CFG1_CS_IDLE_OFFSET);
writel(reg_val, mdata->base + SPI_CFG1_REG);
}