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From: Thierry Reding <thierry.reding@gmail.com>
To: Thierry Reding <thierry.reding@gmail.com>,
	Jassi Brar <jassisinghbrar@gmail.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.com>,
	Mikko Perttunen <mperttunen@nvidia.com>,
	Jon Hunter <jonathanh@nvidia.com>, Timo Alho <talho@nvidia.com>,
	Pekka Pessi <ppessi@nvidia.com>,
	Mika Liljeberg <mliljeberg@nvidia.com>,
	linux-tegra@vger.kernel.org, linux-serial@vger.kernel.org,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH 6/9] dt-bindings: serial: Add bindings for nvidia,tegra194-tcu
Date: Fri, 26 Oct 2018 13:16:35 +0200	[thread overview]
Message-ID: <20181026111638.10759-7-thierry.reding@gmail.com> (raw)
In-Reply-To: <20181026111638.10759-1-thierry.reding@gmail.com>

From: Mikko Perttunen <mperttunen@nvidia.com>

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>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Thierry Reding <treding@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..a8becf6efd2a
--- /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 within the Tegra SoC. It is implemented through a mailbox-
+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";
+};
-- 
2.19.1


  parent reply	other threads:[~2018-10-26 11:16 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-26 11:16 [PATCH 0/9] serial: Add Tegra Combined UART driver Thierry Reding
2018-10-26 11:16 ` [PATCH 1/9] mailbox: Support blocking transfers in atomic context Thierry Reding
2018-10-26 11:16 ` [PATCH 2/9] mailbox: Allow multiple controllers per device Thierry Reding
2018-10-26 11:16 ` [PATCH 3/9] dt-bindings: tegra186-hsp: Add shared interrupts Thierry Reding
2018-10-26 11:16 ` [PATCH 4/9] mailbox: tegra-hsp: Add support for shared mailboxes Thierry Reding
2018-10-29 10:04   ` Pekka Pessi
2018-10-29 10:39     ` Thierry Reding
2018-10-29 12:25       ` Pekka Pessi
2018-10-29 13:16         ` Thierry Reding
2018-10-30 16:15           ` Pekka Pessi
2018-10-26 11:16 ` [PATCH 5/9] mailbox: tegra-hsp: Add suspend/resume support Thierry Reding
2018-10-26 11:16 ` Thierry Reding [this message]
2018-10-26 11:16 ` [PATCH 7/9] serial: Add Tegra Combined UART driver Thierry Reding
2018-11-09 17:05   ` Greg Kroah-Hartman
2018-11-12 15:30     ` Thierry Reding
2018-11-12 18:03       ` Greg Kroah-Hartman
2018-10-26 11:16 ` [PATCH 8/9] arm64: tegra: Add nodes for TCU on Tegra194 Thierry Reding
2018-10-26 11:16 ` [PATCH 9/9] arm64: tegra: Mark TCU as primary serial port on Tegra194 P2888 Thierry Reding
2018-10-29  9:04 ` [PATCH 0/9] serial: Add Tegra Combined UART driver Pekka Pessi
2018-10-29 10:11   ` Thierry Reding

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