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    SubjectRe: [PATCH 19/22] ARM: sunxi: Add earlyprintk support using R_UART (sun6i/sun8i)
    Hi,

    On Fri, May 23, 2014 at 03:51:22PM +0800, Chen-Yu Tsai wrote:
    > sun6i/sun8i have a UART in the RTC block group, which can be used
    > as an early console. This is most useful on sun8i as UART0 is muxed
    > with MMC0, which is not available if we boot from MMC.
    >
    > Signed-off-by: Chen-Yu Tsai <wens@csie.org>
    > ---
    > arch/arm/Kconfig.debug | 10 ++++++++++
    > 1 file changed, 10 insertions(+)
    >
    > diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
    > index eab8ecb..9e22708 100644
    > --- a/arch/arm/Kconfig.debug
    > +++ b/arch/arm/Kconfig.debug
    > @@ -694,6 +694,14 @@ choice
    > Say Y here if you want kernel low-level debugging support
    > on Allwinner A1X based platforms on the UART1.
    >
    > + config DEBUG_SUNXI_R_UART
    > + bool "Kernel low-level debugging messages via sunXi R_UART"
    > + depends on ARCH_SUNXI

    It should rather depend on MACH_SUN8I.

    Maxime

    --
    Maxime Ripard, Free Electrons
    Embedded Linux, Kernel and Android engineering
    http://free-electrons.com
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