openwrtv3/target/linux/ramips/patches-4.9/0098-disable_cm.patch
John Crispin dce3b0057b ramips: fix mt7621 boot on v4.9
v4.9 CM code has a few bugs on this HW. Disable the GCR register access
during boot. This caused a cpu stall.

Signed-off-by: John Crispin <john@phrozen.org>
2017-03-23 09:18:42 +01:00

21 lines
783 B
Diff

Index: linux-4.9.14/arch/mips/kernel/mips-cm.c
===================================================================
--- linux-4.9.14.orig/arch/mips/kernel/mips-cm.c
+++ linux-4.9.14/arch/mips/kernel/mips-cm.c
@@ -239,6 +239,7 @@ int mips_cm_probe(void)
/* disable CM regions */
write_gcr_reg0_base(CM_GCR_REGn_BASE_BASEADDR_MSK);
+ /*
write_gcr_reg0_mask(CM_GCR_REGn_MASK_ADDRMASK_MSK);
write_gcr_reg1_base(CM_GCR_REGn_BASE_BASEADDR_MSK);
write_gcr_reg1_mask(CM_GCR_REGn_MASK_ADDRMASK_MSK);
@@ -246,7 +247,7 @@ int mips_cm_probe(void)
write_gcr_reg2_mask(CM_GCR_REGn_MASK_ADDRMASK_MSK);
write_gcr_reg3_base(CM_GCR_REGn_BASE_BASEADDR_MSK);
write_gcr_reg3_mask(CM_GCR_REGn_MASK_ADDRMASK_MSK);
-
+*/
/* probe for an L2-only sync region */
mips_cm_probe_l2sync();