This driver assumes that lpuart clock is already enabled before probing but using DM only lpuart won't be automatically enabled so add clk_enable() when probing if CONFIG_CLK is defined.
Signed-off-by: Giulio Benetti giulio.benetti@benettiengineering.com --- drivers/serial/serial_lpuart.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/drivers/serial/serial_lpuart.c b/drivers/serial/serial_lpuart.c index 4b0a964d1b..52bd2baf7d 100644 --- a/drivers/serial/serial_lpuart.c +++ b/drivers/serial/serial_lpuart.c @@ -483,6 +483,19 @@ static int lpuart_serial_pending(struct udevice *dev, bool input)
static int lpuart_serial_probe(struct udevice *dev) { +#if CONFIG_IS_ENABLED(CLK) + struct clk per_clk; + int ret; + + ret = clk_get_by_name(dev, "per", &per_clk); + if (ret) { + dev_err(dev, "Failed to get per clk: %d\n", ret); + return ret; + } + + clk_enable(&per_clk); +#endif + if (is_lpuart32(dev)) return _lpuart32_serial_init(dev); else