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Commit a1113f2c authored by Neil Armstrong's avatar Neil Armstrong Committed by Greg Kroah-Hartman
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tty: serial: meson: retrieve port FIFO size from DT 



[ Upstream commit 27d44e05d7b85d9d4cfe0a3c0663ea49752ece93 ]

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.

Reviewed-by: default avatarKevin Hilman <khilman@baylibre.com>
Signed-off-by: default avatarNeil Armstrong <narmstrong@baylibre.com>
Link: https://lore.kernel.org/r/20210518075833.3736038-3-narmstrong@baylibre.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Stable-dep-of: 2a1d728f20ed ("tty: serial: meson: fix hard LOCKUP on crtscts mode")
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 13391526

drivers/tty/serial/meson_uart.c

+4 −1
Original line number Diff line number Diff line
@@ -667,6 +667,7 @@ 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;



	if (pdev->dev.of_node)
@@ -694,6 +695,8 @@ 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;
@@ -722,7 +725,7 @@ 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);