From: Neil Armstrong <narmstrong@baylibre.com>
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 <narmstrong@baylibre.com>,
Kevin Hilman <khilman@baylibre.com>
Subject: [PATCH v2 2/3] tty: serial: meson: retrieve port FIFO size from DT
Date: Thu, 25 Mar 2021 16:24:09 +0100 [thread overview]
Message-ID: <20210325152410.1795557-3-narmstrong@baylibre.com> (raw)
In-Reply-To: <20210325152410.1795557-1-narmstrong@baylibre.com>
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(-)
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
_______________________________________________
linux-amlogic mailing list
linux-amlogic@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-amlogic
next prev parent reply other threads:[~2021-03-25 15:24 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-25 15:24 [PATCH v2 0/3] tty: serial: meson: add amlogic, uart-fifosize property Neil Armstrong
2021-03-25 15:24 ` [PATCH v2 1/3] dt-bindings: serial: amlogic, meson-uart: add fifo-size property Neil Armstrong
2021-04-26 18:06 ` [PATCH v2 1/3] dt-bindings: serial: amlogic,meson-uart: " Neil Armstrong
2021-03-25 15:24 ` Neil Armstrong [this message]
2021-03-28 21:24 ` [PATCH v2 2/3] tty: serial: meson: retrieve port FIFO size from DT Martin Blumenstingl
2021-03-25 15:24 ` [PATCH v2 3/3] arm64: dts: meson: set 128bytes FIFO size on uart A Neil Armstrong
2021-03-28 21:24 ` Martin Blumenstingl
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210325152410.1795557-3-narmstrong@baylibre.com \
--to=narmstrong@baylibre.com \
--cc=devicetree@vger.kernel.org \
--cc=gregkh@linuxfoundation.org \
--cc=khilman@baylibre.com \
--cc=linux-amlogic@lists.infradead.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-serial@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).