Messages in this thread | | | From | Chen-Yu Tsai <> | Date | Mon, 26 May 2014 17:25:43 +0800 | Subject | Re: [PATCH 19/22] ARM: sunxi: Add earlyprintk support using R_UART (sun6i/sun8i) |
| |
On Mon, May 26, 2014 at 2:46 AM, Maxime Ripard <maxime.ripard@free-electrons.com> wrote: > 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.
I assume no sun6i devices would use it, or have pads available for it? If so, then MACH_SUN8I makes sense.
ChenYu
| |