Re: [Xen-devel] [PATCH 16/17 v5] xen/arm: vpl011: Add a pl011 uart DT node in the guest device tree

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Thu, Jun 22, 2017 at 01:08:51PM +0530, Bhupinder Thakur wrote:
> The SBSA UART node format is as specified in
> Documentation/devicetree/bindings/serial/arm_sbsa_uart.txt and given below:
> 
> ARM SBSA defined generic UART
> ------------------------------
> This UART uses a subset of the PL011 registers and consequently lives
> in the PL011 driver. It's baudrate and other communication parameters
> cannot be adjusted at runtime, so it lacks a clock specifier here.
> 
> Required properties:
> - compatible: must be "arm,sbsa-uart"
> - reg: exactly one register range
> - interrupts: exactly one interrupt specifier
> - current-speed: the (fixed) baud rate set by the firmware
> 
> Currently the baud rate of 115200 has been selected as a default value,
> which is one of the valid baud rate setttings. Higher baud rate was
> selected since an emulated pl011 can support any valid baud rate without
> any limitation of the hardware.
> 
> Signed-off-by: Bhupinder Thakur <bhupinder.thakur@xxxxxxxxxx>
> Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>

Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>

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