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SubjectRe: [PATCH v4 1/2] serial_core: add pci uart early console support
On Wed, May 20, 2015 at 02:17:40PM -0700, Bin Gao wrote:
> On some Intel Atom SoCs, the legacy IO port UART(0x3F8) is not available.
> Instead, a 8250 compatible PCI uart can be used as early console.
> This patch adds pci support to the 8250 early console driver uart8250.
> For example, to enable pci uart(00:21.3) as early console on these
> platforms, append the following line to the kernel command line
> (assume baud rate is 115200):
> earlyprintk=uart8250,pci32,0:24.2,115200n8
>
> Signed-off-by: Bin Gao <bin.gao@intel.com>
> ---
> arch/x86/Kconfig | 1 +
> drivers/pci/Kconfig | 11 +++
> drivers/tty/serial/earlycon.c | 9 +++
> drivers/tty/serial/serial_core.c | 145 ++++++++++++++++++++++++++++++++++++++-
> 4 files changed, 164 insertions(+), 2 deletions(-)

What changed in this version?

You can't just put "v4" without giving us some hint as to the
differences here, sorry.


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