Re: [PATCH v2 1/2] arm64: dts: mediatek: alias all enabled serial ports
Chen-Yu Tsai <[email protected]>
| Newsgroups | org.infradead.lists.linux-mediatek,org.infradead.lists.linux-arm-kernel,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-kernel,org.kernel.vger.linux-serial |
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| Message-ID | <CAGXv+5EM5P-cY2VW9MXc_iSjwq=QY1-OaV-s6W8wD8YTUvFN0g@mail.gmail.com> |
On Mon, Jul 27, 2026 at 3:40 PM Carlo Caione <[email protected]> wrote: > > On most MediaTek boards only serial0 is aliased, so the remaining > enabled uarts get first-free ttyS line numbers from the 8250 core in > probe order. When the console uart defers on its clocks another uart can > win line 0: console=ttyS0 then ends up on the wrong port and the boot > looks like a hang on the serial console, depending on probe order. > > Signed-off-by: Carlo Caione <[email protected]> > --- > arch/arm64/boot/dts/mediatek/mt6795-sony-xperia-m5.dts | 1 + > arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts | 1 + > arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts | 2 ++ > arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts | 2 ++ > arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi | 1 + > arch/arm64/boot/dts/mediatek/mt8192-asurada-hayato-r1.dts | 4 ++++ These are the only two MediaTek-based Chromebook designs that use Bluetooth over UART and have a second UART enabled. Reviewed-by: Chen-Yu Tsai <[email protected]> # kukui & asurada-hayato