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tty: serial: meson: Drop the legacy compatible strings and clock code

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All mainline .dts files have been using the stable UART since Linux
4.16. Drop the legacy compatible strings and related clock code.

Signed-off-by: Yu Tu <yu.tu@amlogic.com>
Link: https://lore.kernel.org/r/20211230102110.3861-2-yu.tu@amlogic.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yu Tu 2021-12-30 18:21:05 +08:00 committed by Greg Kroah-Hartman
parent e3b27e2f56
commit ad234e2bac
1 changed files with 2 additions and 32 deletions
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32
drivers/tty/serial/meson_uart.c
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@ -622,10 +622,7 @@ meson_serial_early_console_setup(struct earlycon_device *device, const char *opt
device->con->write = meson_serial_early_console_write;
return 0;
}
/* Legacy bindings, should be removed when no more used */
OF_EARLYCON_DECLARE(meson, "amlogic,meson-uart",
meson_serial_early_console_setup);
/* Stable bindings */
OF_EARLYCON_DECLARE(meson, "amlogic,meson-ao-uart",
meson_serial_early_console_setup);
@ -668,25 +665,6 @@ static inline struct clk *meson_uart_probe_clock(struct device *dev,
return clk;
}
/*
* This function gets clocks in the legacy non-stable DT bindings.
* This code will be remove once all the platforms switch to the
* new DT bindings.
*/
static int meson_uart_probe_clocks_legacy(struct platform_device *pdev,
struct uart_port *port)
{
struct clk *clk = NULL;
clk = meson_uart_probe_clock(&pdev->dev, NULL);
if (IS_ERR(clk))
return PTR_ERR(clk);
port->uartclk = clk_get_rate(clk);
return 0;
}
static int meson_uart_probe_clocks(struct platform_device *pdev,
struct uart_port *port)
{
@ -755,12 +733,7 @@ static int meson_uart_probe(struct platform_device *pdev)
if (!port)
return -ENOMEM;
/* Use legacy way until all platforms switch to new bindings */
if (of_device_is_compatible(pdev->dev.of_node, "amlogic,meson-uart"))
ret = meson_uart_probe_clocks_legacy(pdev, port);
else
ret = meson_uart_probe_clocks(pdev, port);
if (ret)
return ret;
@ -805,9 +778,6 @@ static int meson_uart_remove(struct platform_device *pdev)
}
static const struct of_device_id meson_uart_dt_match[] = {
/* Legacy bindings, should be removed when no more used */
{ .compatible = "amlogic,meson-uart" },
/* Stable bindings */
{ .compatible = "amlogic,meson6-uart" },
{ .compatible = "amlogic,meson8-uart" },
{ .compatible = "amlogic,meson8b-uart" },