[PATCH] serial: ns16550: Enable clocks during probe

[Stefan Roese]

On 11/28/22 06:48, Samuel Holland wrote:
> If the UART bus or baud clock has a gate, it must be enabled before the
> UART can be used.
> 
> Signed-off-by: Samuel Holland <samuel at sholland.org>
> ---
> 
>   drivers/serial/ns16550.c | 5 +++++
>   1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c
> index 7592979cab5..785fb520062 100644
> --- a/drivers/serial/ns16550.c
> +++ b/drivers/serial/ns16550.c
> @@ -506,6 +506,7 @@ int ns16550_serial_probe(struct udevice *dev)
>   	struct ns16550_plat *plat = dev_get_plat(dev);
>   	struct ns16550 *const com_port = dev_get_priv(dev);
>   	struct reset_ctl_bulk reset_bulk;
> +	struct clk_bulk clk_bulk;
>   	fdt_addr_t addr;
>   	int ret;
>   
> @@ -524,6 +525,10 @@ int ns16550_serial_probe(struct udevice *dev)
>   	if (!ret)
>   		reset_deassert_bulk(&reset_bulk);
>   
> +	ret = clk_get_bulk(dev, &clk_bulk);
> +	if (!ret)
> +		clk_enable_bulk(&clk_bulk);
> +
>   	com_port->plat = dev_get_plat(dev);
>   	ns16550_init(com_port, -1);
>   

Reviewed-by: Stefan Roese <sr at denx.de>

Thanks,
Stefan