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uboot-mediatek: bpi-r4-lite fix emmc frequency

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Use lower emmc frequency.
This fix issue when mmc write, from uboot, failed.

Failed case:
 - we boot from NAND
 - choose "Install bootloader, recovery and production to eMMC"

MMC erase: dev # 0, block # 0, count 1024 ... 1024 blocks erased: OK
MMC write: dev # 0, block # 0, count 1024 ... mmc write failed
0 blocks written: ERROR

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@holisticon.pl>
Link: https://github.com/openwrt/openwrt/pull/22615
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This commit is contained in:
Janusz Dziedzic 2026-03-31 18:20:34 +02:00 committed by Hauke Mehrtens
parent ef584a3632
commit 1c0aec0a85
1 changed files with 14 additions and 1 deletions
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15
package/boot/uboot-mediatek/patches/470-add-bpi-r4-lite.patch
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@ -1133,7 +1133,7 @@
+};
--- /dev/null
+++ b/arch/arm/dts/mt7987a-bpi-r4-lite-spim-nand-u-boot.dtsi
@@ -0,0 +1,69 @@
@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2025 MediaTek Inc.
@ -1163,6 +1163,19 @@
+ };
+};
+
+&mmc0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&mmc_pins_default>;
+ max-frequency = <48000000>;
+ bus-width = <4>;
+ cap-mmc-highspeed;
+ cap-mmc-hw-reset;
+ vmmc-supply = <&reg_3p3v>;
+ vqmmc-supply = <&reg_3p3v>;
+ non-removable;
+ status = "okay";
+};
+
+&spi2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi2_flash_pins>;