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Diffstat (limited to 'arch/xtensa/mm/mmu.c')
-rw-r--r--arch/xtensa/mm/mmu.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/arch/xtensa/mm/mmu.c b/arch/xtensa/mm/mmu.c
index 0f77f9d3bb8b..a1077570e383 100644
--- a/arch/xtensa/mm/mmu.c
+++ b/arch/xtensa/mm/mmu.c
@@ -24,15 +24,19 @@ void __init paging_init(void)
*/
void __init init_mmu(void)
{
- /* Writing zeros to the <t>TLBCFG special registers ensure
- * that valid values exist in the register. For existing
- * PGSZID<w> fields, zero selects the first element of the
- * page-size array. For nonexistent PGSZID<w> fields, zero is
- * the best value to write. Also, when changing PGSZID<w>
+#if !(XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY)
+ /*
+ * Writing zeros to the instruction and data TLBCFG special
+ * registers ensure that valid values exist in the register.
+ *
+ * For existing PGSZID<w> fields, zero selects the first element
+ * of the page-size array. For nonexistent PGSZID<w> fields,
+ * zero is the best value to write. Also, when changing PGSZID<w>
* fields, the corresponding TLB must be flushed.
*/
set_itlbcfg_register(0);
set_dtlbcfg_register(0);
+#endif
flush_tlb_all();
/* Set rasid register to a known value. */