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home-assistant-yellow/repos/aimee-os/sys-boot/u-boot/files/0001-drivers-bcm283x-don-t-explicitly-disable-init.patch
Dustin C. Hatch 31d8a98f64 build: Implement CONFIGDIR setting
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
```
2023-03-15 21:12:04 -05:00

55 lines
1.6 KiB
Diff

From 85fb54b621c1ca79f1ec8634b0597a038338e51d Mon Sep 17 00:00:00 2001
Message-Id: <85fb54b621c1ca79f1ec8634b0597a038338e51d.1668448114.git.stefan@agner.ch>
From: Stefan Agner <stefan@agner.ch>
Date: Thu, 14 Apr 2022 12:15:26 +0200
Subject: [PATCH] drivers: bcm283x: don't explicitly disable init
It seems that the reason why init doesn't succeed is the lack of clock
support in U-Boot. Setting the default clock of 48MHz for the PL011
UARTs makes reinitialization work consistently.
Note that for the first UART the "skip-init" is anyways set in the
device tree. This will only affect probing of UARTs not enabled by
firmware.
Signed-off-by: Stefan Agner <stefan@agner.ch>
---
drivers/serial/serial_bcm283x_pl011.c | 6 ------
include/configs/rpi.h | 3 +++
2 files changed, 3 insertions(+), 6 deletions(-)
diff --git a/drivers/serial/serial_bcm283x_pl011.c b/drivers/serial/serial_bcm283x_pl011.c
index 7d172cdac0..fcba07f1c5 100644
--- a/drivers/serial/serial_bcm283x_pl011.c
+++ b/drivers/serial/serial_bcm283x_pl011.c
@@ -51,12 +51,6 @@ static int bcm283x_pl011_serial_probe(struct udevice *dev)
if (ret)
return ret;
- /*
- * TODO: Reinitialization doesn't always work for now, just skip
- * init always - we know we're already initialized
- */
- plat->skip_init = true;
-
return pl01x_serial_probe(dev);
}
diff --git a/include/configs/rpi.h b/include/configs/rpi.h
index 7257659932..7fdf2a891d 100644
--- a/include/configs/rpi.h
+++ b/include/configs/rpi.h
@@ -33,6 +33,9 @@
*/
#define CONFIG_SYS_SDRAM_SIZE SZ_128M
+/* Define PL011 default clock */
+#define CONFIG_PL011_CLOCK 48000000
+
/* Devices */
/* LCD */
--
2.38.1