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From: Rob Herring <robh@kernel.org>
To: Mikko Perttunen <mperttunen@nvidia.com>
Cc: mark.rutland@arm.com, jassisinghbrar@gmail.com,
	gregkh@linuxfoundation.org, thierry.reding@gmail.com,
	jonathanh@nvidia.com, araza@nvidia.com,
	devicetree@vger.kernel.org, linux-serial@vger.kernel.org,
	linux-tegra@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/8] dt-bindings: serial: Add bindings for nvidia,tegra194-tcu
Date: Tue, 22 May 2018 15:20:36 -0500	[thread overview]
Message-ID: <20180522202036.GB24611@rob-hp-laptop> (raw)
In-Reply-To: <20180508114403.14499-3-mperttunen@nvidia.com>

On Tue, May 08, 2018 at 02:43:57PM +0300, Mikko Perttunen wrote:
> Add bindings for the Tegra Combined UART device used to talk to the
> UART console on Tegra194 systems.
> 
> Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
> ---
>  .../bindings/serial/nvidia,tegra194-tcu.txt        | 35 ++++++++++++++++++++++
>  1 file changed, 35 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/serial/nvidia,tegra194-tcu.txt
> 
> diff --git a/Documentation/devicetree/bindings/serial/nvidia,tegra194-tcu.txt b/Documentation/devicetree/bindings/serial/nvidia,tegra194-tcu.txt
> new file mode 100644
> index 000000000000..86763bc5d74f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/serial/nvidia,tegra194-tcu.txt
> @@ -0,0 +1,35 @@
> +NVIDIA Tegra Combined UART (TCU)
> +
> +The TCU is a system for sharing a hardware UART instance among multiple
> +systems withing the Tegra SoC. It is implemented through a mailbox-

s/withing/within/

Otherwise,

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

> +based protocol where each "virtual UART" has a pair of mailboxes, one
> +for transmitting and one for receiving, that is used to communicate
> +with the hardware implementing the TCU.
> +
> +Required properties:
> +- name : Should be tcu
> +- compatible
> +    Array of strings
> +    One of:
> +    - "nvidia,tegra194-tcu"
> +- mbox-names:
> +    "rx" - Mailbox for receiving data from hardware UART
> +    "tx" - Mailbox for transmitting data to hardware UART
> +- mboxes: Mailboxes corresponding to the mbox-names. 
> +
> +This node is a mailbox consumer. See the following files for details of
> +the mailbox subsystem, and the specifiers implemented by the relevant
> +provider(s):
> +
> +- .../mailbox/mailbox.txt
> +- .../mailbox/nvidia,tegra186-hsp.txt
> +
> +Example bindings:
> +-----------------
> +
> +tcu: tcu {
> +	compatible = "nvidia,tegra194-tcu";
> +	mboxes = <&hsp_top0 TEGRA_HSP_MBOX_TYPE_SM 0>,
> +	         <&hsp_aon TEGRA_HSP_MBOX_TYPE_SM 1>;
> +	mbox-names = "rx", "tx";
> +};
> -- 
> 2.16.1
> 

  parent reply	other threads:[~2018-05-22 20:20 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-08 11:43 [PATCH 0/8] Tegra Combined UART driver Mikko Perttunen
2018-05-08 11:43 ` [PATCH 1/8] dt-bindings: tegra186-hsp: Add shared interrupts Mikko Perttunen
2018-05-22 15:15   ` Jon Hunter
2018-06-19 12:41     ` Mikko Perttunen
2018-05-08 11:43 ` [PATCH 2/8] dt-bindings: serial: Add bindings for nvidia,tegra194-tcu Mikko Perttunen
2018-05-22 15:15   ` Jon Hunter
2018-05-22 20:18     ` Rob Herring
2018-05-22 20:20   ` Rob Herring [this message]
2018-05-08 11:43 ` [PATCH 3/8] mailbox: Add transmit done by blocking option Mikko Perttunen
2018-05-08 11:43 ` [PATCH 4/8] mailbox: tegra-hsp: Refactor in preparation of mailboxes Mikko Perttunen
2018-05-22 15:36   ` Jon Hunter
2018-06-19 12:52     ` Mikko Perttunen
2018-05-08 11:44 ` [PATCH 5/8] mailbox: tegra-hsp: Add support for shared mailboxes Mikko Perttunen
2018-05-22 16:20   ` Jon Hunter
2018-05-08 11:44 ` [PATCH 6/8] serial: Add Tegra Combined UART driver Mikko Perttunen
2018-05-13 14:16   ` Andy Shevchenko
2018-05-13 18:04     ` Mikko Perttunen
2018-05-13 22:20       ` Andy Shevchenko
2018-05-14  7:36         ` Mikko Perttunen
2018-05-13 15:36   ` Jassi Brar
2018-05-13 18:06     ` Mikko Perttunen
2018-05-08 11:44 ` [PATCH 7/8] arm64: tegra: Add nodes for tcu on Tegra194 Mikko Perttunen
2018-05-22 16:28   ` Jon Hunter
2018-05-08 11:44 ` [PATCH 8/8] arm64: tegra: Mark tcu as primary serial port on Tegra194 P2888 Mikko Perttunen
2018-05-22 16:29   ` Jon Hunter

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