Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-11-28 23:51:33 +00:00
Code Issues Projects Releases Packages Wiki Activity

rpi: Remove runtime disabling support for serial

Browse source 
We are switching to a model where our board file can directly fail probing
of serial devices when they're not usable, so remove the current runtime
hack we have.

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf 2018-01-25 12:05:43 +01:00 committed by Tom Rini
parent 608b0c4ad4
commit 55b8a2ddaa
1 changed files with 0 additions and 43 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

43
board/raspberrypi/rpi/rpi.c
View file

@ -420,54 +420,11 @@ static void get_board_rev(void)
printf("RPI %s (0x%x)\n", model->name, revision);
}
#ifndef CONFIG_PL01X_SERIAL
static bool rpi_is_serial_active(void)
{
int serial_gpio = 15;
struct udevice *dev;
/*
* The RPi3 disables the mini uart by default. The easiest way to find
* out whether it is available is to check if the RX pin is muxed.
*/
if (uclass_first_device(UCLASS_PINCTRL, &dev) || !dev)
return true;
if (pinctrl_get_gpio_mux(dev, 0, serial_gpio) != BCM2835_GPIO_ALT5)
return false;
return true;
}
/* Disable mini-UART I/O if it's not pinmuxed to our pins.
* The firmware only enables it if explicitly done in config.txt: enable_uart=1
*/
static void rpi_disable_inactive_uart(void)
{
struct udevice *dev;
struct bcm283x_mu_serial_platdata *plat;
if (uclass_get_device_by_driver(UCLASS_SERIAL,
DM_GET_DRIVER(serial_bcm283x_mu),
&dev) || !dev)
return;
if (!rpi_is_serial_active()) {
plat = dev_get_platdata(dev);
plat->disabled = true;
}
}
#endif
int board_init(void)
{
#ifdef CONFIG_HW_WATCHDOG
hw_watchdog_init();
#endif
#ifndef CONFIG_PL01X_SERIAL
rpi_disable_inactive_uart();
#endif
get_board_rev();