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(-)
diff --git a/arch/arm/dts/mt7622-bananapi-bpi-r64.dts b/arch/arm/dts/mt7622-bananapi-bpi-r64.dts index 4f2f04851d..2ac933a6ac 100644 --- 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"; };
diff --git a/arch/arm/dts/mt7622-rfb.dts b/arch/arm/dts/mt7622-rfb.dts index c2f1ad2011..30a9137407 100644 --- a/arch/arm/dts/mt7622-rfb.dts +++ b/arch/arm/dts/mt7622-rfb.dts @@ -189,8 +189,6 @@ };
&uart0 { - pinctrl-names = "default"; - pinctrl-0 = <&uart0_pins>; status = "okay"; };