[U-Boot] [PATCH 2/4] x86: dfi-bt700.dtsi: Add PCI HS-UART interrupt property

Bin Meng bmeng.cn at gmail.com
Wed Aug 16 09:25:39 UTC 2017


On Tue, Aug 15, 2017 at 5:33 PM, Stefan Roese <sr at denx.de> wrote:
> This patch adds the interrupt property for the PCI HS-UART NS16550
> UART on Bay Trail x86 platforms. This can be used to enable the RX
> interrupt buffer support of the ns16550 driver, so that even very
> long lines can be pasted in the U-Boot console shell.
>
> Please note that in general the interrupt number should be read
> from the PCI config registers by the UART driver. But since the UART
> driver is called very early in the init process, these PCI config
> registers are not initialized yet at this time. And since the PCI
> interrupt configuration is also fixed in the dfi-bt700.dtsi file,
> adding this one interrupt property to the UART DT node will not cause
> any problems with dynamic interrupt assignments resulting in a
> different interrupt number for this PCI device.
>
> Signed-off-by: Stefan Roese <sr at denx.de>
> Cc: Simon Glass <sjg at chromium.org>
> Cc: Bin Meng <bmeng.cn at gmail.com>
> ---
>  arch/x86/dts/dfi-bt700.dtsi | 1 +
>  1 file changed, 1 insertion(+)
>

Reviewed-by: Bin Meng <bmeng.cn at gmail.com>


More information about the U-Boot mailing list