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| author | Marcin Niestroj <m.niestroj@grinn-global.com> | 2019-06-28 17:56:43 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-07-02 08:16:37 +0200 |
| commit | 7184fcfac6a4940fb29908a3b0133e710f78e6df (patch) | |
| tree | 8e0e281ad4652edb4e58e55ceb2fa0cc398122a4 /drivers/serial | |
| parent | 6e465b62125af759c9e90f86ece45f136242e72d (diff) | |
| download | barebox-7184fcfac6a4940fb29908a3b0133e710f78e6df.tar.gz barebox-7184fcfac6a4940fb29908a3b0133e710f78e6df.tar.xz | |
serial: ns16550: support reg-offset device-tree property
Some SoC have serial registers with a fixed offset to the map base.
Support them by respecting 'reg-offset' device-tree property.
Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/serial')
| -rw-r--r-- | drivers/serial/serial_ns16550.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/serial/serial_ns16550.c b/drivers/serial/serial_ns16550.c index 4c84d27bdc..3edeb0dcbe 100644 --- a/drivers/serial/serial_ns16550.c +++ b/drivers/serial/serial_ns16550.c @@ -314,12 +314,15 @@ static int ns16550_tstc(struct console_device *cdev) static void ns16550_probe_dt(struct device_d *dev, struct ns16550_priv *priv) { struct device_node *np = dev->device_node; + u32 offset; u32 width = 1; if (!IS_ENABLED(CONFIG_OFDEVICE)) return; of_property_read_u32(np, "clock-frequency", &priv->plat.clock); + if (of_property_read_u32(np, "reg-offset", &offset) == 0) + priv->mmiobase += offset; of_property_read_u32(np, "reg-shift", &priv->plat.shift); of_property_read_u32(np, "reg-io-width", &width); switch (width) { |