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Message-Id: <20210325152410.1795557-3-narmstrong@baylibre.com>
Date: Thu, 25 Mar 2021 16:24:09 +0100
From: Neil Armstrong <narmstrong@...libre.com>
To: gregkh@...uxfoundation.org
Cc: devicetree@...r.kernel.org, linux-serial@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
Neil Armstrong <narmstrong@...libre.com>,
Kevin Hilman <khilman@...libre.com>
Subject: [PATCH v2 2/3] tty: serial: meson: retrieve port FIFO size from DT
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@...libre.com>
Reviewed-by: Kevin Hilman <khilman@...libre.com>
---
drivers/tty/serial/meson_uart.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
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);
--
2.25.1
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