Use SPI module software reset to simplify cspi_0_0_init().
Signed-off-by: Alexander Shiyan <shc_work@xxxxxxx>
---
drivers/spi/imx_spi.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
diff --git a/drivers/spi/imx_spi.c b/drivers/spi/imx_spi.c
index 45461bd..3c1ba61 100644
--- a/drivers/spi/imx_spi.c
+++ b/drivers/spi/imx_spi.c
@@ -67,6 +67,8 @@
#define CSPI_0_0_TEST_LBC (1 << 14)
+#define CSPI_0_0_RESET_START (1 << 0)
+
#define CSPI_0_7_RXDATA 0x00
#define CSPI_0_7_TXDATA 0x04
#define CSPI_0_7_CTRL 0x08
@@ -197,13 +199,9 @@ static void cspi_0_0_init(struct imx_spi *imx)
{
void __iomem *base = imx->regs;
- writel(CSPI_0_0_CTRL_ENABLE | CSPI_0_0_CTRL_MASTER,
- base + CSPI_0_0_CTRL);
- writel(CSPI_0_0_PERIOD_32KHZ,
- base + CSPI_0_0_PERIOD);
- while (readl(base + CSPI_0_0_INT) & CSPI_0_0_STAT_RR)
- readl(base + CSPI_0_0_RXDATA);
- writel(0, base + CSPI_0_0_INT);
+ writel(CSPI_0_0_RESET_START, base + CSPI_0_0_RESET);
+ do {
+ } while (readl(base + CSPI_0_0_RESET) & CSPI_0_0_RESET_START);
}
static unsigned int cspi_0_7_xchg_single(struct imx_spi *imx, unsigned int data)
--
1.8.3.2
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