From: Cristian Marussi <cristian.marussi@arm.com>
To: linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
virtualization@lists.linux-foundation.org,
virtio-dev@lists.oasis-open.org
Cc: sudeep.holla@arm.com, james.quinlan@broadcom.com,
Jonathan.Cameron@Huawei.com, f.fainelli@gmail.com,
etienne.carriere@linaro.org, vincent.guittot@linaro.org,
souvik.chakravarty@arm.com, cristian.marussi@arm.com,
igor.skalkin@opensynergy.com, peter.hilber@opensynergy.com,
alex.bennee@linaro.org, jean-philippe@linaro.org,
mikhail.golubev@opensynergy.com, anton.yakovlev@opensynergy.com,
Vasyl.Vavrychuk@opensynergy.com,
Andriy.Tryshnivskyy@opensynergy.com,
Rob Herring <robh+dt@kernel.org>,
devicetree@vger.kernel.org
Subject: [PATCH v4 13/16] dt-bindings: arm: Add virtio transport for SCMI
Date: Fri, 11 Jun 2021 17:59:34 +0100 [thread overview]
Message-ID: <20210611165937.701-14-cristian.marussi@arm.com> (raw)
In-Reply-To: <20210611165937.701-1-cristian.marussi@arm.com>
From: Igor Skalkin <igor.skalkin@opensynergy.com>
Document the properties for arm,scmi-virtio compatible nodes.
The backing virtio SCMI device is described in patch [1].
While doing that, make shmem property required only for pre-existing
mailbox and smc transports, since virtio-scmi does not need it.
[1] https://lists.oasis-open.org/archives/virtio-comment/202102/msg00018.html
CC: Rob Herring <robh+dt@kernel.org>
CC: devicetree@vger.kernel.org
Signed-off-by: Igor Skalkin <igor.skalkin@opensynergy.com>
[ Peter: Adapted patch for submission to upstream. ]
Co-developed-by: Peter Hilber <peter.hilber@opensynergy.com>
Signed-off-by: Peter Hilber <peter.hilber@opensynergy.com>
[ Cristian: converted to yaml format, moved shmen required property. ]
Co-developed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
---
v3 --> V4
- convertd to YAML
- make shmem required only for pre-existing mailbox and smc transport
- updated VirtIO specification patch message reference
- dropped virtio-mmio SCMI device example since really not pertinent to
virtio-scmi dt bindings transport: it is not even referenced in SCMI
virtio DT node since they are enumerated by VirtIO subsystem and there
could be PCI based SCMI devices anyway.
---
Documentation/devicetree/bindings/firmware/arm,scmi.yaml | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
index cebf6ffe70d5..5c4c6782e052 100644
--- a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
+++ b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
@@ -34,6 +34,10 @@ properties:
- description: SCMI compliant firmware with ARM SMC/HVC transport
items:
- const: arm,scmi-smc
+ - description: SCMI compliant firmware with SCMI Virtio transport.
+ The virtio transport only supports a single device.
+ items:
+ - const: arm,scmi-virtio
interrupts:
description:
@@ -172,6 +176,7 @@ patternProperties:
Each sub-node represents a protocol supported. If the platform
supports a dedicated communication channel for a particular protocol,
then the corresponding transport properties must be present.
+ The virtio transport does not support a dedicated communication channel.
properties:
reg:
@@ -195,7 +200,6 @@ patternProperties:
required:
- compatible
- - shmem
if:
properties:
@@ -209,6 +213,7 @@ then:
required:
- mboxes
+ - shmem
else:
if:
@@ -219,6 +224,7 @@ else:
then:
required:
- arm,smc-id
+ - shmem
examples:
- |
--
2.17.1
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next prev parent reply other threads:[~2021-06-11 17:09 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-11 16:59 [PATCH v4 00/16] Introduce SCMI VirtIO transport Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 01/16] firmware: arm_scmi: Fix max pending messages boundary check Cristian Marussi
2021-07-01 8:42 ` Peter Hilber
2021-07-01 10:04 ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 02/16] firmware: arm_scmi: Add support for type handling in common functions Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 03/16] firmware: arm_scmi: Add transport optional init/exit support Cristian Marussi
2021-06-14 13:29 ` Jonathan Cameron
2021-06-16 9:04 ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 04/16] firmware: arm_scmi: Introduce monotonically increasing tokens Cristian Marussi
2021-06-14 13:53 ` Jonathan Cameron
2021-06-16 9:11 ` Cristian Marussi
2021-07-01 8:42 ` Peter Hilber
2021-07-01 10:16 ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 05/16] firmware: arm_scmi: Introduce delegated xfers support Cristian Marussi
2021-07-01 8:42 ` Peter Hilber
2021-07-01 10:24 ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 06/16] firmware: arm_scmi, smccc, mailbox: Make shmem based transports optional Cristian Marussi
2021-07-01 8:42 ` Peter Hilber
2021-07-01 10:27 ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 07/16] firmware: arm_scmi: Add op to override max message # Cristian Marussi
2021-06-14 14:04 ` Jonathan Cameron
2021-06-16 9:13 ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 08/16] [RFC][REWORK] " Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 09/16] firmware: arm_scmi: Add optional link_supplier() transport op Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 10/16] firmware: arm_scmi: Add per-device transport private info Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 11/16] firmware: arm_scmi: Add is_scmi_protocol_device() Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 12/16] firmware: arm_scmi: Add message passing abstractions for transports Cristian Marussi
2021-06-14 14:10 ` Jonathan Cameron
2021-06-16 9:14 ` Cristian Marussi
2021-06-11 16:59 ` Cristian Marussi [this message]
2021-06-24 19:22 ` [PATCH v4 13/16] dt-bindings: arm: Add virtio transport for SCMI Rob Herring
2021-07-01 8:43 ` Peter Hilber
2021-07-01 10:31 ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 14/16] firmware: arm_scmi: Add virtio transport Cristian Marussi
2021-06-14 14:23 ` Jonathan Cameron
2021-06-16 10:18 ` Cristian Marussi
2021-07-01 8:43 ` Peter Hilber
2021-07-01 10:34 ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 15/16] [RFC][REWORK] firmware: arm_scmi: make virtio-scmi use delegated xfers Cristian Marussi
2021-07-01 8:43 ` Peter Hilber
2021-07-01 11:26 ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 16/16] firmware: arm_scmi: Add polling mode to virtio transport Cristian Marussi
2021-06-14 11:43 ` [PATCH v4 00/16] Introduce SCMI VirtIO transport Christoph Hellwig
2021-06-14 14:03 ` Cristian Marussi
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