Dustin C. Hatch
31d8a98f64
In effort to support different builds of Aimee OS using the same scripts, without necessarily having to fork this repository, the build system now supports a `CONFIGDIR` setting. When this variable is set, files defining the target environment, such as the lists of packages to install, the kernel configuration, the Portage configuration, etc. are found in the path it specifes. The reference build, for the Home Assistant Yellow board, is configured in the `yellow` directory. To build it, run: ```sh CONFIGDIR=yellow ./vm-build.sh ```
69 lines
2.2 KiB
Diff
69 lines
2.2 KiB
Diff
From 921f4b6d8cb3b997dd5c54fd436bb8223046421e Mon Sep 17 00:00:00 2001
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Message-Id: <921f4b6d8cb3b997dd5c54fd436bb8223046421e.1668448114.git.stefan@agner.ch>
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In-Reply-To: <85fb54b621c1ca79f1ec8634b0597a038338e51d.1668448114.git.stefan@agner.ch>
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References: <85fb54b621c1ca79f1ec8634b0597a038338e51d.1668448114.git.stefan@agner.ch>
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From: Stefan Agner <stefan@agner.ch>
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Date: Thu, 14 Apr 2022 12:18:41 +0200
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Subject: [PATCH] drivers: bcm283x: allow to spawn any PL011 UART
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The current code checks pinmux for the first PL011 only. Raspberry Pi 4
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has multiple PL011 UARTs. This code prevents probing of other UARTs in
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case the first PL011 UART is not active.
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Furthermore, U-Boot supports pinmuxing, hence the pins should be muxed
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at this point anyway. Drop the check entirly.
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This allows to use other UARTs as stdout paths (e.g. stdout-path =
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"serial5:115200n8").
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Signed-off-by: Stefan Agner <stefan@agner.ch>
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---
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drivers/serial/serial_bcm283x_pl011.c | 27 ---------------------------
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1 file changed, 27 deletions(-)
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diff --git a/drivers/serial/serial_bcm283x_pl011.c b/drivers/serial/serial_bcm283x_pl011.c
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index fcba07f1c5..98628e1ca4 100644
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--- a/drivers/serial/serial_bcm283x_pl011.c
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+++ b/drivers/serial/serial_bcm283x_pl011.c
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@@ -11,37 +11,10 @@
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#include <serial.h>
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#include "serial_pl01x_internal.h"
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-/*
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- * Check if this serial device is muxed
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- *
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- * The serial device will only work properly if it has been muxed to the serial
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- * pins by firmware. Check whether that happened here.
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- *
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- * Return: true if serial device is muxed, false if not
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- */
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-static bool bcm283x_is_serial_muxed(void)
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-{
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- int serial_gpio = 15;
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- struct udevice *dev;
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-
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- if (uclass_first_device_err(UCLASS_PINCTRL, &dev))
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- return false;
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-
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- if (pinctrl_get_gpio_mux(dev, 0, serial_gpio) != BCM2835_GPIO_ALT0)
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- return false;
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-
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- return true;
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-}
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-
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static int bcm283x_pl011_serial_probe(struct udevice *dev)
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{
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- struct pl01x_serial_plat *plat = dev_get_plat(dev);
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int ret;
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- /* Don't spawn the device if it's not muxed */
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- if (!bcm283x_is_serial_muxed())
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- return -ENODEV;
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-
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/*
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* Read the ofdata here rather than in an of_to_plat() method
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* since we need the soc simple-bus to be probed so that the 'ranges'
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--
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2.38.1
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