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 <s...@denx.de>
Cc: Daniel Schwierzeck <daniel.schwierz...@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
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