--- /dev/null
+From a3ba6adb70c91ec3b9312c3a025faa44acd39cfa Mon Sep 17 00:00:00 2001
+From: Weijie Gao <weijie.gao@mediatek.com>
+Date: Wed, 13 Jul 2022 11:16:39 +0800
+Subject: [PATCH] arm: dts: mt7622: remove default pinctrl of uart0
+
+Currently u-boot running on mt7622 will print an warning log at beginning:
+> serial_mtk serial@11002000: pinctrl_select_state_full: uclass_get_device_by_phandle_id: err=-19
+
+It turns out that the pinctrl uclass can't work properly in board_f stage.
+
+Since the uart0 is the default UART device used by bootrom, and will be
+initialized in both bootrom and tf-a bl2. It's ok not to setup pinctrl for
+uart0 in u-boot.
+
+This patch removes the default pinctrl of uart0 to suppress the unwanted
+warning.
+
+Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
+---
+ arch/arm/dts/mt7622-bananapi-bpi-r64.dts | 2 --
+ arch/arm/dts/mt7622-rfb.dts | 2 --
+ 2 files changed, 4 deletions(-)
+
+--- a/arch/arm/dts/mt7622-bananapi-bpi-r64.dts
++++ b/arch/arm/dts/mt7622-bananapi-bpi-r64.dts
+@@ -182,8 +182,6 @@
+ };
+
+ &uart0 {
+- pinctrl-names = "default";
+- pinctrl-0 = <&uart0_pins>;
+ status = "okay";
+ };
+
+--- a/arch/arm/dts/mt7622-rfb.dts
++++ b/arch/arm/dts/mt7622-rfb.dts
+@@ -196,8 +196,6 @@
+ };
+
+ &uart0 {
+- pinctrl-names = "default";
+- pinctrl-0 = <&uart0_pins>;
+ status = "okay";
+ };
+
reg_1p8v: regulator-1p8v {
compatible = "regulator-fixed";
regulator-name = "fixed-1.8V";
-@@ -199,7 +236,7 @@
+@@ -197,7 +234,7 @@
status = "okay";
bus-width = <8>;
max-frequency = <50000000>;
vmmc-supply = <®_3p3v>;
vqmmc-supply = <®_3p3v>;
non-removable;
-@@ -210,7 +247,7 @@
+@@ -208,7 +245,7 @@
pinctrl-0 = <&mmc1_pins_default>;
status = "okay";
bus-width = <4>;
+CONFIG_USB_STORAGE=y
--- /dev/null
+++ b/arch/arm/dts/mt7622-linksys-e8450-ubi.dts
-@@ -0,0 +1,195 @@
+@@ -0,0 +1,193 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2019 MediaTek Inc.
+};
+
+&uart0 {
-+ pinctrl-names = "default";
-+ pinctrl-0 = <&uart0_pins>;
+ status = "okay";
+};
+
+CONFIG_SPI_FLASH_XMC=y
--- /dev/null
+++ b/arch/arm/dts/mt7622-ubnt-unifi-6-lr.dts
-@@ -0,0 +1,202 @@
+@@ -0,0 +1,200 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2019 MediaTek Inc.
+};
+
+&uart0 {
-+ pinctrl-names = "default";
-+ pinctrl-0 = <&uart0_pins>;
+ status = "okay";
+};
+