dm: imx: serial: Support DTE mode when using driver model

[people/ms/u-boot.git] / drivers / serial / serial_mxc.c

diff --git a/drivers/serial/serial_mxc.c b/drivers/serial/serial_mxc.c
index 1563bb3665b671073d34fb4ae4e459c68542e183..1960bbc5ae8de362cc5400c549573ae4bcbd3296 100644 (file)
--- a/drivers/serial/serial_mxc.c
+++ b/drivers/serial/serial_mxc.c
@@ -76,6 +76,7 @@
 #define  UFCR_RXTL_SHF   0       /* Receiver trigger level shift */
 #define  UFCR_RFDIV      (7<<7)  /* Reference freq divider mask */
 #define  UFCR_RFDIV_SHF  7      /* Reference freq divider shift */
+#define  UFCR_DCEDTE    (1<<6)  /* DTE mode select */
 #define  UFCR_TXTL_SHF   10      /* Transmitter trigger level shift */
 #define  USR1_PARITYERR  (1<<15) /* Parity error interrupt flag */
 #define  USR1_RTSS      (1<<14) /* RTS pin status */
@@ -150,6 +151,7 @@ static void mxc_serial_setbrg(void)
        __REG(UART_PHYS + UFCR) = (RFDIV << UFCR_RFDIV_SHF)
                | (TXTL << UFCR_TXTL_SHF)
                | (RXTL << UFCR_RXTL_SHF);
+       __REG(UART_PHYS + UFCR) |= UFCR_DCEDTE;
        __REG(UART_PHYS + UBIR) = 0xf;
        __REG(UART_PHYS + UBMR) = clk / (2 * gd->baudrate);
 
@@ -269,8 +271,13 @@ int mxc_serial_setbrg(struct udevice *dev, int baudrate)
        struct mxc_serial_platdata *plat = dev->platdata;
        struct mxc_uart *const uart = plat->reg;
        u32 clk = imx_get_uartclk();
+       u32 tmp;
+
+       tmp = 4 << UFCR_RFDIV_SHF;
+       if (plat->use_dte)
+               tmp |= UFCR_DCEDTE;
+       writel(tmp, &uart->fcr);
 
-       writel(4 << 7, &uart->fcr); /* divide input clock by 2 */
        writel(0xf, &uart->bir);
        writel(clk / (2 * baudrate), &uart->bmr);