[PATCH 1/1] serial: ns16550: Add clock ctrl to driver

[Maxim Kochetkov]

Add code to get all clock inputs as in serial DT node. A clock
property is an optional feature, so do not fail if a clock property
is not present.

If a clock property is discovered, then use it to get clock. It
marks clock as used and prevents disabling shared clocks.

Signed-off-by: Maxim Kochetkov <fido_...@inbox.ru>
---
 drivers/serial/ns16550.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c
index 6fcb5b523a..d2065a77bf 100644
--- a/drivers/serial/ns16550.c
+++ b/drivers/serial/ns16550.c
@@ -513,6 +513,7 @@ 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;
        fdt_addr_t size;
        int ret;
@@ -528,6 +529,10 @@ int ns16550_serial_probe(struct udevice *dev)
                        return ret;
        }
 
+       ret = clk_get_bulk(dev, &clk_bulk);
+       if (!ret)
+               clk_enable_bulk(&clk_bulk);
+
        ret = reset_get_bulk(dev, &reset_bulk);
        if (!ret)
                reset_deassert_bulk(&reset_bulk);
-- 
2.45.2