[RFC PATCH 3/3] serial: mxc: restore booting for imx8mn_bsh_smm_s2

[Dario Binacchi]

The commit dda454e933c6 ("serial: mxc: Support bulk enabling clocks")
breaks the booting of the BSH SMM S2 board.
Restore proper booting of the board even in case of failure of either
clk_get_bulk() or clk_enable_bulk().

Fixes: dda454e933c6 ("serial: mxc: Support bulk enabling clocks")
Signed-off-by: Dario Binacchi <dario.binac...@amarulasolutions.com>

---

 drivers/serial/serial_mxc.c | 23 ++++++++++++++++-------
 1 file changed, 16 insertions(+), 7 deletions(-)

diff --git a/drivers/serial/serial_mxc.c b/drivers/serial/serial_mxc.c
index 28f4435d01dd..b09a5fe0f7a4 100644
--- a/drivers/serial/serial_mxc.c
+++ b/drivers/serial/serial_mxc.c
@@ -310,22 +310,31 @@ int mxc_serial_setbrg(struct udevice *dev, int baudrate)
        return 0;
 }
 
-static int mxc_serial_probe(struct udevice *dev)
+#if CONFIG_IS_ENABLED(CLK_CCF)
+static void mxc_serial_enable_clk_bulk(struct udevice *dev)
 {
        struct mxc_serial_plat *plat = dev_get_plat(dev);
-#if CONFIG_IS_ENABLED(CLK_CCF)
        int ret;
 
        ret = clk_get_bulk(dev, &plat->clks);
        if (ret)
-               return ret;
+               return;
 
-       ret = clk_enable_bulk(&plat->clks);
-       if (ret)
-               return ret;
+       clk_enable_bulk(&plat->clks);
+}
+#else
+static mxc_serial_enable_clk_bulk(struct udevice *dev)
+{
+}
 #endif
-       _mxc_serial_init(plat->reg, plat->use_dte);
 
+static int mxc_serial_probe(struct udevice *dev)
+{
+       struct mxc_serial_plat *plat = dev_get_plat(dev);
+
+       mxc_serial_enable_clk_bulk(dev);
+
+       _mxc_serial_init(plat->reg, plat->use_dte);
        return 0;
 }
 
-- 
2.43.0