diff mbox series

[v2,2/3] tty: serial: meson: retrieve port FIFO size from DT

Message ID 20210325152410.1795557-3-narmstrong@baylibre.com
State Accepted
Commit 27d44e05d7b85d9d4cfe0a3c0663ea49752ece93
Headers show
Series [v2,1/3] dt-bindings: serial: amlogic,meson-uart: add fifo-size property | expand

Commit Message

Neil Armstrong March 25, 2021, 3:24 p.m. UTC 
Now the DT bindings has a property to get the FIFO size for a particular port,
retrieve it and use to setup the FIFO interrupts threshold.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
---
 drivers/tty/serial/meson_uart.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

Comments

Martin Blumenstingl March 28, 2021, 9:24 p.m. UTC | #1 
On Thu, Mar 25, 2021 at 4:25 PM Neil Armstrong <narmstrong@baylibre.com> wrote:
>

> Now the DT bindings has a property to get the FIFO size for a particular port,

> retrieve it and use to setup the FIFO interrupts threshold.

>

> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>

> Reviewed-by: Kevin Hilman <khilman@baylibre.com>

Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
diff mbox series

Patch

diff --git a/drivers/tty/serial/meson_uart.c b/drivers/tty/serial/meson_uart.c
index 69eeef9edfa5..ce4dbfb0bd24 100644
--- a/drivers/tty/serial/meson_uart.c
+++ b/drivers/tty/serial/meson_uart.c
@@ -717,6 +717,7 @@  static int meson_uart_probe(struct platform_device *pdev)
 {
 	struct resource *res_mem, *res_irq;
 	struct uart_port *port;
+	u32 fifosize = 64; /* Default is 64, 128 for EE UART_0 */
 	int ret = 0;
 	int id = -1;
 
@@ -743,6 +744,8 @@  static int meson_uart_probe(struct platform_device *pdev)
 	if (!res_irq)
 		return -ENODEV;
 
+	of_property_read_u32(pdev->dev.of_node, "fifo-size", &fifosize);
+
 	if (meson_ports[pdev->id]) {
 		dev_err(&pdev->dev, "port %d already allocated\n", pdev->id);
 		return -EBUSY;
@@ -772,7 +775,7 @@  static int meson_uart_probe(struct platform_device *pdev)
 	port->type = PORT_MESON;
 	port->x_char = 0;
 	port->ops = &meson_uart_ops;
-	port->fifosize = 64;
+	port->fifosize = fifosize;
 
 	meson_ports[pdev->id] = port;
 	platform_set_drvdata(pdev, port);