From: Viresh Kumar <viresh.kumar@linaro.org>
To: Jason Wang <jasowang@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
Rob Herring <robh+dt@kernel.org>, Arnd Bergmann <arnd@kernel.org>,
Jean-Philippe Brucker <jean-philippe@linaro.org>,
Bartosz Golaszewski <bgolaszewski@baylibre.com>,
Linus Walleij <linus.walleij@linaro.org>,
Viresh Kumar <viresh.kumar@linaro.org>
Cc: "Vincent Guittot" <vincent.guittot@linaro.org>,
"Bill Mills" <bill.mills@linaro.org>,
"Alex Bennée" <alex.bennee@linaro.org>,
"Enrico Weigelt, metux IT consult" <info@metux.net>,
"Jie Deng" <jie.deng@intel.com>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
virtualization@lists.linux-foundation.org,
"Arnd Bergmann" <arnd@arndb.de>,
linux-gpio@vger.kernel.org, linux-i2c@vger.kernel.org,
"Wolfram Sang" <wsa@kernel.org>
Subject: [PATCH V4 0/5] virtio: Add virtio-device bindings
Date: Tue, 27 Jul 2021 10:53:47 +0530 [thread overview]
Message-ID: <cover.1627362340.git.viresh.kumar@linaro.org> (raw)
Hi,
Currently the DT only provides support for following node types for virtio-mmio
nodes:
virtio_mmio@a000000 {
dma-coherent;
interrupts = <0x00 0x10 0x01>;
reg = <0x00 0xa000000 0x00 0x200>;
compatible = "virtio,mmio";
};
Here, each virtio-mmio corresponds to a virtio-device. But there is no way for
other users in the DT to show their dependency on virtio devices.
This patchset provides that support.
The first patch adds virtio-device bindings to allow for device sub-nodes to be
present and the second patch updates the virtio core to update the of_node.
Other patches add bindings for i2c and gpio devices.
Tested on x86 with qemu for arm64.
V3->V4:
- The binding is named "virtio,deviceXXXXXXXX" now.
- The virtio binding doesn't restrict the node names anymore.
- The i2c/gpio nodes are named i2c and gpio now.
- Dropped including gpio.yaml.
- Updated code to match the new binding name.
- Use "type: object" in additional-property.
V2/2.1->V3:
- Added review-tags from Arnd and Wolfram.
- Only the 5th patch changed otherwise:
- Use of_device_is_compatible() instead of keeping a list of devices.
- Use snprintf (with BUG_ON on return value) to create the compatible string,
whose length is fixed using "virtio,XXXXXXXX".
- Use dev_of_node().
V1->V2:
- The changes (both binding and code) are made at virtio level, instead of
virtio-mmio. This allows the same to be used by all device types, irrespective
of the transport mechanism.
- Dropped the reg property and used compatible in the form "virtio,<DID>".
- Dropped dt-bindings/virtio/virtio_ids.h.
- Add a patch to sync virtio-ids from spec, required for the last patch.
--
Viresh
Viresh Kumar (5):
dt-bindings: virtio: Add binding for virtio devices
dt-bindings: i2c: Add bindings for i2c-virtio
dt-bindings: gpio: Add bindings for gpio-virtio
uapi: virtio_ids: Sync ids with specification
virtio: Bind virtio device to device-tree node
.../devicetree/bindings/gpio/gpio-virtio.yaml | 59 +++++++++++++++++++
.../devicetree/bindings/i2c/i2c-virtio.yaml | 51 ++++++++++++++++
.../devicetree/bindings/virtio/mmio.yaml | 3 +-
.../bindings/virtio/virtio-device.yaml | 41 +++++++++++++
drivers/virtio/virtio.c | 57 +++++++++++++++++-
include/uapi/linux/virtio_ids.h | 12 ++++
6 files changed, 219 insertions(+), 4 deletions(-)
create mode 100644 Documentation/devicetree/bindings/gpio/gpio-virtio.yaml
create mode 100644 Documentation/devicetree/bindings/i2c/i2c-virtio.yaml
create mode 100644 Documentation/devicetree/bindings/virtio/virtio-device.yaml
--
2.31.1.272.g89b43f80a514
next reply other threads:[~2021-07-27 5:24 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-27 5:23 Viresh Kumar [this message]
2021-07-27 5:23 ` [PATCH V4 1/5] dt-bindings: virtio: Add binding for virtio devices Viresh Kumar
2021-07-27 7:51 ` Arnd Bergmann
2021-08-02 19:40 ` Rob Herring
2021-07-27 5:23 ` [PATCH V4 2/5] dt-bindings: i2c: Add bindings for i2c-virtio Viresh Kumar
2021-08-02 19:41 ` Rob Herring
2021-07-27 5:23 ` [PATCH V4 3/5] dt-bindings: gpio: Add bindings for gpio-virtio Viresh Kumar
2021-08-02 19:40 ` Rob Herring
2021-08-03 4:30 ` Viresh Kumar
2021-08-03 15:47 ` Rob Herring
2021-08-04 3:49 ` Viresh Kumar
2021-07-27 5:23 ` [PATCH V4 4/5] uapi: virtio_ids: Sync ids with specification Viresh Kumar
2021-07-27 5:23 ` [PATCH V4 5/5] virtio: Bind virtio device to device-tree node Viresh Kumar
2021-08-04 3:56 ` [PATCH V4 0/5] virtio: Add virtio-device bindings Viresh Kumar
2021-08-11 5:38 ` Viresh Kumar
2021-08-31 5:31 ` Viresh Kumar
2021-08-31 14:25 ` Michael S. Tsirkin
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