[U-Boot] [PATCH v7 5/9] arm: serial: Add ability to use pre-initialized UARTs

Linus Walleij linus.walleij at linaro.org
Fri Oct 16 23:23:08 CEST 2015


On Wed, Oct 14, 2015 at 6:55 PM, Sergey Temerkhanov
<s.temerkhanov at gmail.com> wrote:

> On some systems, UART initialization is performed before running U-Boot.
> This commit allows to skip UART re-initializaion on those systems
>
> Signed-off-by: Sergey Temerkhanov <s.temerkhanov at gmail.com>
> Signed-off-by: Radha Mohan Chintakuntla <rchintakuntla at cavium.com>
>
> Reviewed-by: Simon Glass <sjg at chromium.org>
(...)

> diff --git a/doc/device-tree-bindings/serial/pl01x.txt b/doc/device-tree-bindings/serial/pl01x.txt
> index 61c27d1..0591497 100644
> --- a/doc/device-tree-bindings/serial/pl01x.txt
> +++ b/doc/device-tree-bindings/serial/pl01x.txt
> @@ -5,3 +5,6 @@ Required properties:
>  - reg: exactly one register range with length 0x1000
>  - clock: input clock frequency for the UART (used to calculate the baud
>    rate divisor)
> +
> +Optional properties:
> +- u-boot,skip-init: skip UART initialization at start.

Again: get this merged in the Linux kernel FIRST. Is it?

Yours,
Linus Walleij


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