serial: lpuart: Proper device identification

Identify and distinguish between platform device type of MX7ULP
and LS1021A.

This is a fix to commit 7edf5c45("serial: lpuart: add i.MX7ULP
support").

Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>

diff --git a/drivers/serial/serial_lpuart.c b/drivers/serial/serial_lpuart.c
index 382f8ba5b52d6279dfc214cdc73ef6a91fea6ddb..536d30f66a035db9ab5f4b060a8ec2f4968f9e5f 100644 (file)
--- a/drivers/serial/serial_lpuart.c
+++ b/drivers/serial/serial_lpuart.c
@@ -265,11 +265,9 @@ static int _lpuart32_serial_getc(struct lpuart_serial_platdata *plat)
 
        lpuart_read32(plat->flags, &base->data, &val);
 
-       if (plat->devtype & DEV_MX7ULP) {
-               lpuart_read32(plat->flags, &base->stat, &stat);
-               if (stat & STAT_OR)
-                       lpuart_write32(plat->flags, &base->stat, STAT_OR);
-       }
+       lpuart_read32(plat->flags, &base->stat, &stat);
+       if (stat & STAT_OR)
+               lpuart_write32(plat->flags, &base->stat, STAT_OR);
 
        return val & 0x3ff;
 }
@@ -280,10 +278,8 @@ static void _lpuart32_serial_putc(struct lpuart_serial_platdata *plat,
        struct lpuart_fsl_reg32 *base = plat->reg;
        u32 stat;
 
-       if (plat->devtype & DEV_MX7ULP) {
-               if (c == '\n')
-                       serial_putc('\r');
-       }
+       if (c == '\n')
+               serial_putc('\r');
 
        while (true) {
                lpuart_read32(plat->flags, &base->stat, &stat);
@@ -330,7 +326,7 @@ static int _lpuart32_serial_init(struct lpuart_serial_platdata *plat)
 
        lpuart_write32(plat->flags, &base->match, 0);
 
-       if (plat->devtype & DEV_MX7ULP) {
+       if (plat->devtype == DEV_MX7ULP) {
                _lpuart32_serial_setbrg_7ulp(plat, gd->baudrate);
        } else {
                /* provide data bits, parity, stop bit, etc */
@@ -347,7 +343,7 @@ static int lpuart_serial_setbrg(struct udevice *dev, int baudrate)
        struct lpuart_serial_platdata *plat = dev->platdata;
 
        if (is_lpuart32(dev)) {
-               if (plat->devtype & DEV_MX7ULP)
+               if (plat->devtype == DEV_MX7ULP)
                        _lpuart32_serial_setbrg_7ulp(plat, baudrate);
                else
                        _lpuart32_serial_setbrg(plat, baudrate);