[openwrt/openwrt] mediatek: Xiaomi AX3000t: enable SPI calibration

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/043df82cea89786f1dcdfe47af1736bf8833fde9

commit 043df82cea89786f1dcdfe47af1736bf8833fde9
Author: Mikhail Zhilkin <csharper2005 at gmail.com>
AuthorDate: Sat Feb 15 12:24:20 2025 +0000

    mediatek: Xiaomi AX3000t: enable SPI calibration
    
    Xiaomi enabled SPI calibration in new firmware:
    - 1.0.84 and newer (rd03 model)
    - 1.0.76 and newer (rd23 model)
    
    This enables SPI calibration routines in OpenWrt too.
    
    Tested-by: Aleksandr Danilov <sc16me at gmail.com>
    Signed-off-by: Mikhail Zhilkin <csharper2005 at gmail.com>
    Link: https://github.com/openwrt/openwrt/pull/17976
    Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
---
 target/linux/mediatek/dts/mt7981b-xiaomi-mi-router-common.dtsi | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/target/linux/mediatek/dts/mt7981b-xiaomi-mi-router-common.dtsi b/target/linux/mediatek/dts/mt7981b-xiaomi-mi-router-common.dtsi
index c64b55cf6f..511184d771 100644
--- a/target/linux/mediatek/dts/mt7981b-xiaomi-mi-router-common.dtsi
+++ b/target/linux/mediatek/dts/mt7981b-xiaomi-mi-router-common.dtsi
@@ -315,6 +315,13 @@
 		compatible = "spi-nand";
 		reg = <0>;
 
+		spi-cal-enable;
+		spi-cal-mode = "read-data";
+		spi-cal-datalen = <7>;
+		spi-cal-data = /bits/ 8 <0x53 0x50 0x49 0x4e 0x41 0x4e 0x44>;
+		spi-cal-addrlen = <5>;
+		spi-cal-addr = /bits/ 32 <0x0 0x0 0x0 0x0 0x0>;
+
 		spi-max-frequency = <52000000>;
 		spi-tx-bus-width = <4>;
 		spi-rx-bus-width = <4>;