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Mon, 15 Mar 2021 01:35:01 -0700 (PDT) From: Neil Armstrong To: gregkh@linuxfoundation.org Cc: devicetree@vger.kernel.org, linux-serial@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org, Neil Armstrong Subject: [PATCH 2/3] tty: serial: meson: retrieve port FIFO size from DT Date: Mon, 15 Mar 2021 09:34:58 +0100 Message-Id: <20210315083459.359773-3-narmstrong@baylibre.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210315083459.359773-1-narmstrong@baylibre.com> References: <20210315083459.359773-1-narmstrong@baylibre.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210315_083507_897569_CE104584 X-CRM114-Status: GOOD ( 14.52 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org 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 --- 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..7244b12aefab 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, "amlogic,uart-fifosize", &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 _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic