[U-Boot] [PATCH 2/3] serial: 16550: Add port type as driver data

[Marek Vasut]

Add driver data to each compatible string to identify the type of
the port. Since all the ports in the driver are entirely compatible
with 16550 for now, all are marked with PORT_NS16550. But, there
are ports which have specific quirks, like the JZ4780 UART, which
do not have any DT property to denote the quirks. Instead, Linux
uses the compatible string to discern such ports and enable the
necessary quirks.

Signed-off-by: Marek Vasut <marex at denx.de>
Cc: Tom Rini <trini at konsulko.com>
Cc: Simon Glass <sjg at chromium.org>
---
 drivers/serial/ns16550.c | 24 ++++++++++++++----------
 1 file changed, 14 insertions(+), 10 deletions(-)

diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c
index b39ce02..f371f74 100644
--- a/drivers/serial/ns16550.c
+++ b/drivers/serial/ns16550.c
@@ -360,6 +360,10 @@ int ns16550_serial_probe(struct udevice *dev)
 }
 
 #if CONFIG_IS_ENABLED(OF_CONTROL)
+enum {
+	PORT_NS16550 = 0,
+};
+
 int ns16550_serial_ofdata_to_platdata(struct udevice *dev)
 {
 	struct ns16550_platdata *plat = dev->platdata;
@@ -437,16 +441,16 @@ const struct dm_serial_ops ns16550_serial_ops = {
  * compatible string to your dts.
  */
 static const struct udevice_id ns16550_serial_ids[] = {
-	{ .compatible = "ns16550" },
-	{ .compatible = "ns16550a" },
-	{ .compatible = "nvidia,tegra20-uart" },
-	{ .compatible = "snps,dw-apb-uart" },
-	{ .compatible = "ti,omap2-uart" },
-	{ .compatible = "ti,omap3-uart" },
-	{ .compatible = "ti,omap4-uart" },
-	{ .compatible = "ti,am3352-uart" },
-	{ .compatible = "ti,am4372-uart" },
-	{ .compatible = "ti,dra742-uart" },
+	{ .compatible = "ns16550",		.data = PORT_NS16550 },
+	{ .compatible = "ns16550a",		.data = PORT_NS16550 },
+	{ .compatible = "nvidia,tegra20-uart",	.data = PORT_NS16550 },
+	{ .compatible = "snps,dw-apb-uart",	.data = PORT_NS16550 },
+	{ .compatible = "ti,omap2-uart",	.data = PORT_NS16550 },
+	{ .compatible = "ti,omap3-uart",	.data = PORT_NS16550 },
+	{ .compatible = "ti,omap4-uart",	.data = PORT_NS16550 },
+	{ .compatible = "ti,am3352-uart",	.data = PORT_NS16550 },
+	{ .compatible = "ti,am4372-uart",	.data = PORT_NS16550 },
+	{ .compatible = "ti,dra742-uart",	.data = PORT_NS16550 },
 	{}
 };
 #endif
-- 
2.7.0