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