| Message ID | 1430228434-31779-4-git-send-email-eddie.huang@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi Eddie, On Tue, Apr 28, 2015 at 09:40:34PM +0800, Eddie Huang wrote: > Add earlycon support to mediatek MT8173 evaluation board dts. This is not about earlycon support. It adds the stdout-path property which is generally about console. It only happens to used for earlycon, but would be used as a regular console aswell if it wasn't broken for some kernel revisisions. > > - chosen { }; > + chosen { > + linux,stdout-path = &uart0; > + }; Please use stdout-path, without the 'linux,'. Sascha
On Wednesday 29 April 2015 12:15 PM, Sascha Hauer wrote: > Hi Eddie, > > On Tue, Apr 28, 2015 at 09:40:34PM +0800, Eddie Huang wrote: >> Add earlycon support to mediatek MT8173 evaluation board dts. > This is not about earlycon support. It adds the stdout-path property > which is generally about console. Indeed, this is shorter way of specifying the default console by referring to uart device. > It only happens to used for earlycon, > but would be used as a regular console aswell if it wasn't broken for > some kernel revisisions. Really - I'm confused. When I last tried this for arc_uart (in 3.17 time frame), it would setup default console, but to use it for earlycon we needed bootargs=earlycon in chosen. However I had to revet that change since OF core still was fixing a few things in that area. See mainline 22524b02b17b901f28 ("Revert "ARC: [arcfpga] stdout-path now suffices for earlycon/console"") -Vineet > >> >> - chosen { }; >> + chosen { >> + linux,stdout-path = &uart0; >> + }; > Please use stdout-path, without the 'linux,'. > > Sascha >
diff --git a/arch/arm64/boot/dts/mediatek/mt8173-evb.dts b/arch/arm64/boot/dts/mediatek/mt8173-evb.dts index 43d5401..d4cf751 100644 --- a/arch/arm64/boot/dts/mediatek/mt8173-evb.dts +++ b/arch/arm64/boot/dts/mediatek/mt8173-evb.dts @@ -30,7 +30,9 @@ reg = <0 0x40000000 0 0x80000000>; }; - chosen { }; + chosen { + linux,stdout-path = &uart0; + }; }; &uart0 {
Add earlycon support to mediatek MT8173 evaluation board dts. Signed-off-by: Eddie Huang <eddie.huang@mediatek.com> --- arch/arm64/boot/dts/mediatek/mt8173-evb.dts | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)