From: Stefan Roese <sr@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 02/14] mips: mt76xx: lowlevel_init.S: Add missing memory controller reset in DDR init
Date: Tue, 9 Oct 2018 08:59:04 +0200 [thread overview]
Message-ID: <20181009065916.31977-2-sr@denx.de> (raw)
In-Reply-To: <20181009065916.31977-1-sr@denx.de>
This fixes an issue which has been noticed on the Gardena board, with
the watchdog enabled, where the watdchdog reset (after a system hang)
did result in reporting of 2.9 GiB and a hang after this. With this
patch applied the memory controller is correctly reset and initialized
again even after a watchdog reset.
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
---
arch/mips/mach-mt7620/lowlevel_init.S | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/mips/mach-mt7620/lowlevel_init.S b/arch/mips/mach-mt7620/lowlevel_init.S
index 1a50f160fe..aa707e0de6 100644
--- a/arch/mips/mach-mt7620/lowlevel_init.S
+++ b/arch/mips/mach-mt7620/lowlevel_init.S
@@ -108,6 +108,12 @@ CPLL_READY:
sw t3, 0(t0)
CPLL_DONE:
+ /* Reset MC */
+ lw t2, 0x34(s0)
+ ori t2, BIT(10)
+ sw t2, 0x34(s0)
+ nop
+
/*
* SDR and DDR initialization: delay 200us
*/
--
2.19.1
next prev parent reply other threads:[~2018-10-09 6:59 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-09 6:59 [U-Boot] [PATCH 01/14] mips: Add in_le32(), out_le32() etc IO accessor functions Stefan Roese
2018-10-09 6:59 ` Stefan Roese [this message]
2018-10-28 19:42 ` [U-Boot] [PATCH 02/14] mips: mt76xx: lowlevel_init.S: Add missing memory controller reset in DDR init Daniel Schwierzeck
2018-10-09 6:59 ` [U-Boot] [PATCH 03/14] mips: mt76xx: Enable SYS_MIPS_CACHE_INIT_RAM_LOAD for cache init Stefan Roese
2018-10-28 19:02 ` Daniel Schwierzeck
2018-10-09 6:59 ` [U-Boot] [PATCH 04/14] mips: mt76xx: Add ethernet DT node to mt7628a.dtsi Stefan Roese
2018-10-28 19:43 ` Daniel Schwierzeck
2018-10-09 6:59 ` [U-Boot] [PATCH 05/14] mips: mt76xx: Add GPIO DT nodes " Stefan Roese
2018-10-09 6:59 ` [U-Boot] [PATCH 06/14] mips: mt76xx: Add watchdog DT node " Stefan Roese
2018-10-09 6:59 ` [U-Boot] [PATCH 07/14] mips: mt76xx: Kconfig: Add ethernet and GPIO support Stefan Roese
2018-10-09 6:59 ` [U-Boot] [PATCH 08/14] mips: mt76xx: Enable watchdog support Stefan Roese
2018-10-09 6:59 ` [U-Boot] [PATCH 09/14] mips: mt76xx: gardena-smart-gateway: Configure GPIOs (digital vs analog) Stefan Roese
2018-10-09 6:59 ` [U-Boot] [PATCH 10/14] mips: mt76xx: gardena-smart-gateway: Add LEDs to dts Stefan Roese
2018-10-09 6:59 ` [U-Boot] [PATCH 11/14] mips: mt76xx: gardena-smart-gateway: Add board_late_init() to set LED def state Stefan Roese
2018-10-09 6:59 ` [U-Boot] [PATCH 12/14] mips: mt76xx: gardena-smart-gateway: Misc updates to dts/config/defconfig Stefan Roese
2018-10-09 6:59 ` [U-Boot] [PATCH 13/14] mips: mt76xx: linkit-smart-7688: Use ioremap_nocache to get address Stefan Roese
2018-10-09 6:59 ` [U-Boot] [PATCH 14/14] mips: mt76xx: linkit-smart-7688: Misc updates to dts/config/defconfig Stefan Roese
2018-10-09 17:38 ` [U-Boot] [PATCH 01/14] mips: Add in_le32(), out_le32() etc IO accessor functions Anatolij Gustschin
2018-10-10 5:57 ` Stefan Roese
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