[PATCH V5 4/5] tty: serial: meson: Make some bit of the REG5 register writable.
From: Yu Tu
Date: Mon Jan 10 2022 - 05:43:34 EST
The UART_REG5 register defaults to 0. The console port is set in
ROMCODE. But other UART ports default to 0, so make bit24 and
bit[26,27] writable so that the UART can choose a more
appropriate clock.
Signed-off-by: Yu Tu <yu.tu@xxxxxxxxxxx>
---
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 1004fd0b0c9e..fd128878e91a 100644
--- a/drivers/tty/serial/meson_uart.c
+++ b/drivers/tty/serial/meson_uart.c
@@ -693,7 +693,7 @@ 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);
@@ -719,7 +719,7 @@ 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,
NULL, NULL);
if (IS_ERR(hw))
return PTR_ERR(hw);
--
2.33.1