From: Yu Tu <yu.tu@amlogic.com>
To: <linux-serial@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-amlogic@lists.infradead.org>,
<linux-kernel@vger.kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jirislaby@kernel.org>,
Neil Armstrong <narmstrong@baylibre.com>,
Kevin Hilman <khilman@baylibre.com>,
Jerome Brunet <jbrunet@baylibre.com>,
Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
Yu Tu <yu.tu@amlogic.com>
Subject: [PATCH V7 4/6] tty: serial: meson: Make some bit of the REG5 register writable
Date: Fri, 25 Feb 2022 15:39:20 +0800 [thread overview]
Message-ID: <20220225073922.3947-5-yu.tu@amlogic.com> (raw)
In-Reply-To: <20220225073922.3947-1-yu.tu@amlogic.com>
Make the internal clock source mux and divider writeable, allowing the
uart to deviate from the settings intially applied by the ROMCode and
using the most appropriate clocks.
Signed-off-by: Yu Tu <yu.tu@amlogic.com>
---
drivers/tty/serial/meson_uart.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/serial/meson_uart.c b/drivers/tty/serial/meson_uart.c
index 4768d51fac70..ba8dc203b9cb 100644
--- a/drivers/tty/serial/meson_uart.c
+++ b/drivers/tty/serial/meson_uart.c
@@ -686,7 +686,7 @@ static int meson_uart_probe_clocks(struct uart_port *port)
CLK_SET_RATE_NO_REPARENT,
port->membase + AML_UART_REG5,
26, 2,
- CLK_DIVIDER_READ_ONLY,
+ CLK_DIVIDER_ROUND_CLOSEST,
xtal_div_table, NULL);
if (IS_ERR(hw))
return PTR_ERR(hw);
@@ -708,7 +708,7 @@ static int meson_uart_probe_clocks(struct uart_port *port)
CLK_SET_RATE_PARENT,
port->membase + AML_UART_REG5,
24, 0x1,
- CLK_MUX_READ_ONLY,
+ CLK_MUX_ROUND_CLOSEST,
&use_xtal_mux_table, NULL);
if (IS_ERR(hw))
--
2.33.1
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next prev parent reply other threads:[~2022-02-25 7:42 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-25 7:39 [PATCH V7 0/6] Use CCF to describe the UART baud rate clock Yu Tu
2022-02-25 7:39 ` [PATCH V7 1/6] tty: serial: meson: Move request the register region to probe Yu Tu
2022-02-25 7:39 ` [PATCH V7 2/6] tty: serial: meson: Use devm_ioremap_resource to get register mapped memory Yu Tu
2022-02-25 7:39 ` [PATCH V7 3/6] tty: serial: meson: Describes the calculation of the UART baud rate clock using a clock frame Yu Tu
2022-02-28 11:10 ` Jerome Brunet
2022-03-01 6:49 ` Yu Tu
2022-03-01 8:26 ` Jerome Brunet
2022-03-01 9:13 ` Yu Tu
2022-03-01 13:17 ` Marek Szyprowski
2022-03-01 21:04 ` Greg Kroah-Hartman
2022-02-25 7:39 ` Yu Tu [this message]
2022-02-25 7:39 ` [PATCH V7 5/6] tty: serial: meson: The system stuck when you run the stty command on the console to change the baud rate Yu Tu
2022-02-28 10:58 ` Jerome Brunet
2022-03-01 5:44 ` Yu Tu
2022-02-25 7:39 ` [PATCH V7 6/6] tty: serial: meson: Added S4 SOC compatibility Yu Tu
2022-02-28 10:59 ` [PATCH V7 0/6] Use CCF to describe the UART baud rate clock Jerome Brunet
2022-03-01 5:54 ` Yu Tu
2022-03-01 8:36 ` Jerome Brunet
2022-03-01 9:01 ` Yu Tu
2022-03-01 9:27 ` Neil Armstrong
2022-03-01 10:12 ` Yu Tu
2022-03-02 2:15 ` Yu Tu
2022-03-01 7:25 ` Neil Armstrong
2022-03-01 7:57 ` Yu Tu
2022-03-01 8:37 ` Neil Armstrong
2022-03-01 8:47 ` Yu Tu
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