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| author | John Crispin <john@phrozen.org> | 2017-03-23 09:18:42 +0100 |
|---|---|---|
| committer | John Crispin <john@phrozen.org> | 2017-03-23 09:18:42 +0100 |
| commit | dce3b0057b986ab3278392607433b862e2865416 (patch) | |
| tree | d541992573fb3e40bac6e8a9919c7f8c5b741a74 | |
| parent | 666bfc6fb554441f1940eba84e00be10487e2463 (diff) | |
| download | upstream-dce3b0057b986ab3278392607433b862e2865416.tar.gz upstream-dce3b0057b986ab3278392607433b862e2865416.tar.bz2 upstream-dce3b0057b986ab3278392607433b862e2865416.zip | |
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>
| -rw-r--r-- | target/linux/ramips/patches-4.9/0098-disable_cm.patch | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/target/linux/ramips/patches-4.9/0098-disable_cm.patch b/target/linux/ramips/patches-4.9/0098-disable_cm.patch new file mode 100644 index 0000000000..6ea4909851 --- /dev/null +++ b/target/linux/ramips/patches-4.9/0098-disable_cm.patch @@ -0,0 +1,21 @@ +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(); + |