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-rw-r--r--target/linux/ramips/patches-5.15/120-highmem-start-offset.patch19
1 files changed, 19 insertions, 0 deletions
diff --git a/target/linux/ramips/patches-5.15/120-highmem-start-offset.patch b/target/linux/ramips/patches-5.15/120-highmem-start-offset.patch
new file mode 100644
index 0000000000..629c7bfa5c
--- /dev/null
+++ b/target/linux/ramips/patches-5.15/120-highmem-start-offset.patch
@@ -0,0 +1,19 @@
+From: Felix Fietkau <nbd@nbd.name>
+Date: Mon Jul 24 13:29:13 CEST 2023
+Subject: [PATCH] mips: ralink: increase highmem start
+
+Increase highmem start address in order to support devices with 512 MB memory
+and MT7621 SoC
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+--- a/arch/mips/include/asm/mach-ralink/spaces.h
++++ b/arch/mips/include/asm/mach-ralink/spaces.h
+@@ -5,6 +5,7 @@
+ #define PCI_IOBASE _AC(0xa0000000, UL)
+ #define PCI_IOSIZE SZ_16M
+ #define IO_SPACE_LIMIT (PCI_IOSIZE - 1)
++#define HIGHMEM_START _AC(0x24000000, UL)
+
+ #include <asm/mach-generic/spaces.h>
+ #endif