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 */