[openwrt/openwrt] mediatek: fix ubi size for zbtlink zbt z8102ax v2

[LEDE Commits]

robimarko pushed a commit to openwrt/openwrt.git, branch openwrt-24.10:
https://git.openwrt.org/9fa8e7e9a3a98282fac09880b014e980e476796d

commit 9fa8e7e9a3a98282fac09880b014e980e476796d
Author: Tianling Shen <cnsztl at immortalwrt.org>
AuthorDate: Thu Nov 13 21:41:30 2025 +0800

    mediatek: fix ubi size for zbtlink zbt z8102ax v2
    
    According to the factory uboot and firmware[1], the ubi size is set
    to 512 MiB (0x20000000) and it exceeds the size of the flash, after
    that the uboot and kernel resizes it to 114.5 MiB (0x7280000) instead
    of 114.125 MiB (0x7220000). The mismatch of the ubi size causes
    kernel fails to read ubi volumes and throws panic.
    
    Trim whitespaces while at it.
    
    1. https://github.com/immortalwrt/immortalwrt/issues/2123#issuecomment-3523744128
    
    Fixes: c908fc7d9591 ("mediatek: add support for Zbtlink ZBT-Z8102AX v2")
    Signed-off-by: Tianling Shen <cnsztl at immortalwrt.org>
    Link: https://github.com/openwrt/openwrt/pull/20769
    Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
    (cherry picked from commit d2fa070f7014e8b1144a23e343b31390e7f565ff)
    [rebased upon 24.10 branch]
    Signed-off-by: Tianling Shen <cnsztl at immortalwrt.org>
    Link: https://github.com/openwrt/openwrt/pull/21085
    Signed-off-by: Robert Marko <robimarko at gmail.com>
---
 target/linux/mediatek/dts/mt7981b-zbtlink-zbt-z8102ax-v2.dts | 12 ++++++------
 .../filogic/base-files/etc/board.d/05_compat-version         |  3 ++-
 target/linux/mediatek/image/filogic.mk                       |  2 ++
 3 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/target/linux/mediatek/dts/mt7981b-zbtlink-zbt-z8102ax-v2.dts b/target/linux/mediatek/dts/mt7981b-zbtlink-zbt-z8102ax-v2.dts
index 08fc4b977a..f96be22355 100644
--- a/target/linux/mediatek/dts/mt7981b-zbtlink-zbt-z8102ax-v2.dts
+++ b/target/linux/mediatek/dts/mt7981b-zbtlink-zbt-z8102ax-v2.dts
@@ -38,7 +38,7 @@
 			linux,code = <KEY_WPS_BUTTON>;
 			gpios = <&pio 0 GPIO_ACTIVE_LOW>;
 		};
-		
+
 	};
 
 	leds {
@@ -55,20 +55,20 @@
 			color = <LED_COLOR_ID_GREEN>;
 			function = LED_FUNCTION_STATUS;
 		};
-		
+
 		led_status_blue: blue {
 			gpios = <&pio 11 GPIO_ACTIVE_LOW>;
 			color = <LED_COLOR_ID_BLUE>;
 			function = LED_FUNCTION_STATUS;
 		};
-		
+
 		led_status_5g1: 5g1 {
 			gpios = <&pio 8 GPIO_ACTIVE_LOW>;
 			color = <LED_COLOR_ID_BLUE>;
 			function = LED_FUNCTION_USB;
 			function-enumerator = <0>;
 		};
-		
+
 		led_status_5g2: 5g2 {
 			gpios = <&pio 13 GPIO_ACTIVE_LOW>;
 			color = <LED_COLOR_ID_BLUE>;
@@ -135,7 +135,7 @@
 			pause;
 		};
 	};
-	
+
 	gmac1: mac at 1 {
 		compatible = "mediatek,eth-mac";
 		reg = <1>;
@@ -207,7 +207,7 @@
 
 			nand_rootfs: partition at 580000 {
 				label = "ubi";
-				reg = <0x0580000 0x7220000>;
+				reg = <0x0580000 0x7280000>;
 			};
 		};
 	};
diff --git a/target/linux/mediatek/filogic/base-files/etc/board.d/05_compat-version b/target/linux/mediatek/filogic/base-files/etc/board.d/05_compat-version
index 9b704b983c..74591b7b0f 100644
--- a/target/linux/mediatek/filogic/base-files/etc/board.d/05_compat-version
+++ b/target/linux/mediatek/filogic/base-files/etc/board.d/05_compat-version
@@ -8,7 +8,8 @@ case "$(board_name)" in
 	bananapi,bpi-r3)
 		ucidef_set_compat_version "1.2"
 		;;
-	routerich,ax3000)
+	routerich,ax3000|\
+	zbtlink,zbt-z8102ax-v2)
 		ucidef_set_compat_version "1.1"
 		;;
 esac
diff --git a/target/linux/mediatek/image/filogic.mk b/target/linux/mediatek/image/filogic.mk
index 78e77ea28d..da2a01b51c 100644
--- a/target/linux/mediatek/image/filogic.mk
+++ b/target/linux/mediatek/image/filogic.mk
@@ -2096,6 +2096,8 @@ define Device/zbtlink_zbt-z8102ax-v2
   IMAGES += factory.bin
   IMAGE/factory.bin := append-ubi | check-size $$(IMAGE_SIZE)
   IMAGE/sysupgrade.bin := sysupgrade-tar | append-metadata
+  DEVICE_COMPAT_VERSION := 1.1
+  DEVICE_COMPAT_MESSAGE := Partition layout has been changed to fit the bootloader
 endef
 TARGET_DEVICES += zbtlink_zbt-z8102ax-v2