Adding compatibility for AM437X platforms.
Since the serial node is not populated with a clock node,
let's add an additional driver variable to set the default clock speed.
Signed-off-by: Alexander Shiyan <eagle.alexander923@xxxxxxxxx>
---
drivers/serial/serial_ns16550.c | 17 +++++++++++++++--
1 file changed, 15 insertions(+), 2 deletions(-)
diff --git a/drivers/serial/serial_ns16550.c b/drivers/serial/serial_ns16550.c
index f93a89ab95..fb6af42e00 100644
--- a/drivers/serial/serial_ns16550.c
+++ b/drivers/serial/serial_ns16550.c
@@ -42,8 +42,9 @@ struct ns16550_priv {
};
struct ns16550_drvdata {
- void (*init_port)(struct console_device *cdev);
- const char *linux_console_name;
+ void (*init_port)(struct console_device *cdev);
+ const char *linux_console_name;
+ unsigned int clk_default;
};
static inline struct ns16550_priv *to_ns16550_priv(struct console_device *cdev)
@@ -362,6 +363,12 @@ static __maybe_unused struct ns16550_drvdata omap_drvdata = {
.linux_console_name = "ttyO",
};
+static __maybe_unused struct ns16550_drvdata am43xx_drvdata = {
+ .init_port = ns16550_omap_init_port,
+ .linux_console_name = "ttyO",
+ .clk_default = 48000000,
+};
+
static __maybe_unused struct ns16550_drvdata jz_drvdata = {
.init_port = ns16550_jz_init_port,
};
@@ -472,6 +479,9 @@ static int ns16550_probe(struct device_d *dev)
else
ns16550_probe_dt(dev, priv);
+ if (devtype->clk_default && !priv->plat.clock)
+ priv->plat.clock = devtype->clk_default;
+
if (!priv->plat.clock) {
priv->clk = clk_get(dev, NULL);
if (IS_ERR(priv->clk)) {
@@ -537,6 +547,9 @@ static struct of_device_id ns16550_serial_dt_ids[] = {
}, {
.compatible = "ti,omap4-uart",
.data = &omap_drvdata,
+ }, {
+ .compatible = "ti,am4372-uart",
+ .data = &am43xx_drvdata,
},
#endif
#if IS_ENABLED(CONFIG_MACH_MIPS_XBURST)
--
2.32.0
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