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Date: Thu, 21 Dec 2023 15:11:56 -0600
From: Rob Herring <robh@kernel.org>
To: Michal Simek <michal.simek@amd.com>
Cc: linux-kernel@vger.kernel.org, michal.simek@xilinx.com, Conor Dooley <conor+dt@kernel.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Jiri Slaby <jirislaby@kernel.org>, linux-serial@vger.kernel.org, monstr@monstr.eu, Rob Herring <robh+dt@kernel.org>, git@xilinx.com, devicetree@vger.kernel.org, Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Subject: Re: [PATCH] dt-bindings: serial: Describe ARM dcc interface
Message-ID: <170319311633.101509.1532196763061569676.robh@kernel.org>
References: <9d7e85914eb1cdb313b28cb019093a84dd9b4773.1703167505.git.michal.simek@amd.com>
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On Thu, 21 Dec 2023 15:05:09 +0100, Michal Simek wrote:
> Debug Communication Channel (DCC) provides the way how to pass data between
> target CPU and host via JTAG interface. Every CPU has own interface for
> communication via dbgdtrtx_el0 and dbgdtrrx_el0 registers.
> 
> Signed-off-by: Michal Simek <michal.simek@amd.com>
> ---
> 
> This communication interface is used for flash programming on Xilinx
> SOCs from U-Boot.
> https://source.denx.de/u-boot/u-boot/-/blob/master/drivers/serial/arm_dcc.c
> 
> ---
>  .../devicetree/bindings/serial/arm,dcc.yaml   | 30 +++++++++++++++++++
>  1 file changed, 30 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/serial/arm,dcc.yaml
> 

Reviewed-by: Rob Herring <robh@kernel.org>