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From: Mikko Perttunen <mperttunen@nvidia.com>
To: <robh+dt@kernel.org>, <mark.rutland@arm.com>,
	<jassisinghbrar@gmail.com>, <gregkh@linuxfoundation.org>,
	<thierry.reding@gmail.com>, <jonathanh@nvidia.com>
Cc: <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>,
	Mikko Perttunen <mperttunen@nvidia.com>
Subject: [PATCH 2/8] dt-bindings: serial: Add bindings for nvidia,tegra194-tcu
Date: Tue, 8 May 2018 14:43:57 +0300	[thread overview]
Message-ID: <20180508114403.14499-3-mperttunen@nvidia.com> (raw)
In-Reply-To: <20180508114403.14499-1-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>
---
 .../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-
+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:[~2018-05-08 11:43 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 ` Mikko Perttunen [this message]
2018-05-22 15:15   ` [PATCH 2/8] dt-bindings: serial: Add bindings for nvidia,tegra194-tcu Jon Hunter
2018-05-22 20:18     ` Rob Herring
2018-05-22 20:20   ` Rob Herring
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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