[PATCH] tty: amba-pl011: add support for 32-bit register access for earlycon
Greg Kroah-Hartman
greg at kroah.com
Sat Dec 12 22:06:43 PST 2015
On Fri, Nov 06, 2015 at 06:18:23PM -0600, Timur Tabi wrote:
> Add support the "mmio32" earlycon option for the pl011 device. If
> specified in the earlycon parameter, all reads/writes to pl011 registers
> during early console will use 32-bit accessors. Normally the function
> uses 8-bit writes.
>
> Normal console uses the "access_32b" field of the vendor data structure
> to determine whether the registers needs 32-bit accessors. Early console
> is used before the vendor data is available, so we need a different
> mechanism to choose the accessor.
>
> Example:
>
> earlycon=pl011,mmio32,0x3ced1000
>
> Signed-off-by: Timur Tabi <timur at codeaurora.org>
> ---
>
> This patch applies on top of Russell's 12-part amba-pl011.c patchset.
Which I didn't apply, so can you resend this after he resends his?
thanks,
greg k-h
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