From: Neil Armstrong Date: Tue, 18 May 2021 07:58:32 +0000 (+0200) Subject: tty: serial: meson: retrieve port FIFO size from DT X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=27d44e05d7b85d9d4cfe0a3c0663ea49752ece93;p=linux.git 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. Reviewed-by: Kevin Hilman Signed-off-by: Neil Armstrong Link: https://lore.kernel.org/r/20210518075833.3736038-3-narmstrong@baylibre.com Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/tty/serial/meson_uart.c b/drivers/tty/serial/meson_uart.c index d7f55031b2cf4..efee3935917fc 100644 --- a/drivers/tty/serial/meson_uart.c +++ b/drivers/tty/serial/meson_uart.c @@ -715,6 +715,7 @@ 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) @@ -742,6 +743,8 @@ 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; @@ -771,7 +774,7 @@ 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);