From: "Marek Behún" <kabel@kernel.org>
To: Chris Packham <judge.packham@gmail.com>, Stefan Roese <sr@denx.de>
Cc: "u-boot@lists.denx.de" <u-boot@lists.denx.de>,
"Marek Behún" <marek.behun@nic.cz>
Subject: [PATCH u-boot-marvell 2/2] arm: mvebu: turris_omnia: Reset the board immediately on DDR training failure
Date: Thu, 17 Feb 2022 01:08:49 +0100 [thread overview]
Message-ID: <20220217000849.13028-2-kabel@kernel.org> (raw)
In-Reply-To: <20220217000849.13028-1-kabel@kernel.org>
From: Marek Behún <marek.behun@nic.cz>
The state of the current DDR training code for Armada 38x is such that
we cannot be sure it will always train successfully - although after the
last change we were yet unable to find a board that failed DDR training,
from experience in the last 2 years we know that it is possible.
The experience also tells us that in many cases the board fails training
only sometimes, and after a reset the training is successful.
Enable the new option that makes the board reset itself on DDR training
failure immediately. Until now we called hang() in such a case, which
meant that the board was reset by the MCU after 120 seconds.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
---
configs/turris_omnia_defconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/configs/turris_omnia_defconfig b/configs/turris_omnia_defconfig
index d6f70caeaf..010d69adcc 100644
--- a/configs/turris_omnia_defconfig
+++ b/configs/turris_omnia_defconfig
@@ -11,6 +11,7 @@ CONFIG_NR_DRAM_BANKS=2
CONFIG_SYS_MEMTEST_START=0x00800000
CONFIG_SYS_MEMTEST_END=0x00ffffff
CONFIG_TARGET_TURRIS_OMNIA=y
+CONFIG_DDR_RESET_ON_TRAINING_FAILURE=y
CONFIG_ENV_SIZE=0x10000
CONFIG_ENV_OFFSET=0xF0000
CONFIG_ENV_SECT_SIZE=0x10000
--
2.34.1
next prev parent reply other threads:[~2022-02-17 0:09 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-17 0:08 [PATCH u-boot-marvell 1/2] arm: mvebu: spl: Add option to reset the board on DDR training failure Marek Behún
2022-02-17 0:08 ` Marek Behún [this message]
2022-02-17 5:48 ` [PATCH u-boot-marvell 2/2] arm: mvebu: turris_omnia: Reset the board immediately " Stefan Roese
2022-02-17 5:48 ` [PATCH u-boot-marvell 1/2] arm: mvebu: spl: Add option to reset the board " Stefan Roese
2022-02-17 11:37 ` Pali Rohár
2022-02-17 11:42 ` Stefan Roese
2022-02-17 11:46 ` Pali Rohár
2022-02-17 11:48 ` Marek Behún
2022-02-17 12:09 ` Pali Rohár
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