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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-01-02 18:41:38 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-01-02 18:41:38 -0800 |
commit | 35ddb06a467538434b4139fbf5c02a2ef073162a (patch) | |
tree | 20bf25b62f6d360adffd4233a971ef53b02019be /Documentation/devicetree/bindings | |
parent | 6aa293d8ff0939802a6c86cee6cd152c1b0a7a0d (diff) | |
parent | d69e11648e486ee0f21cb246f687b083f0d4e124 (diff) | |
download | linux-stable-35ddb06a467538434b4139fbf5c02a2ef073162a.tar.gz linux-stable-35ddb06a467538434b4139fbf5c02a2ef073162a.tar.bz2 linux-stable-35ddb06a467538434b4139fbf5c02a2ef073162a.zip |
Merge tag 'mailbox-v4.21' of git://git.linaro.org/landing-teams/working/fujitsu/integration
Pull mailbox updates from Jassi Brar:
- Introduce device-managed registration
devm_mbox_controller_un/register and convert drivers to use it
- Introduce flush api to support clients that must busy-wait in atomic
context
- Support multiple controllers per device
- Hi3660: a bugfix and constify ops structure
- TI-MsgMgr: off by one bugfix.
- BCM: switch to spdx license
- Tegra-HSP: support for shared mailboxes and suspend/resume.
* tag 'mailbox-v4.21' of git://git.linaro.org/landing-teams/working/fujitsu/integration: (30 commits)
mailbox: tegra-hsp: Use device-managed registration API
mailbox: tegra-hsp: use devm_kstrdup_const()
mailbox: tegra-hsp: Add suspend/resume support
mailbox: tegra-hsp: Add support for shared mailboxes
dt-bindings: tegra186-hsp: Add shared mailboxes
mailbox: Allow multiple controllers per device
mailbox: Support blocking transfers in atomic context
mailbox: ti-msgmgr: Use device-managed registration API
mailbox: stm32-ipcc: Use device-managed registration API
mailbox: rockchip: Use device-managed registration API
mailbox: qcom-apcs: Use device-managed registration API
mailbox: platform-mhu: Use device-managed registration API
mailbox: omap: Use device-managed registration API
mailbox: mtk-cmdq: Remove needless devm_kfree() calls
mailbox: mtk-cmdq: Use device-managed registration API
mailbox: xgene-slimpro: Use device-managed registration API
mailbox: sti: Use device-managed registration API
mailbox: altera: Use device-managed registration API
mailbox: imx: Use device-managed registration API
mailbox: hi6220: Use device-managed registration API
...
Diffstat (limited to 'Documentation/devicetree/bindings')
-rw-r--r-- | Documentation/devicetree/bindings/mailbox/nvidia,tegra186-hsp.txt | 30 |
1 files changed, 25 insertions, 5 deletions
diff --git a/Documentation/devicetree/bindings/mailbox/nvidia,tegra186-hsp.txt b/Documentation/devicetree/bindings/mailbox/nvidia,tegra186-hsp.txt index b99d25fc2f26..ff3eafc5a882 100644 --- a/Documentation/devicetree/bindings/mailbox/nvidia,tegra186-hsp.txt +++ b/Documentation/devicetree/bindings/mailbox/nvidia,tegra186-hsp.txt @@ -15,12 +15,15 @@ Required properties: Array of strings. one of: - "nvidia,tegra186-hsp" + - "nvidia,tegra194-hsp", "nvidia,tegra186-hsp" - reg : Offset and length of the register set for the device. - interrupt-names Array of strings. Contains a list of names for the interrupts described by the interrupt property. May contain the following entries, in any order: - "doorbell" + - "sharedN", where 'N' is a number from zero up to the number of + external interrupts supported by the HSP instance minus one. Users of this binding MUST look up entries in the interrupt property by name, using this interrupt-names property to do so. - interrupts @@ -29,12 +32,29 @@ Required properties: in a matching order. - #mbox-cells : Should be 2. -The mbox specifier of the "mboxes" property in the client node should -contain two data. The first one should be the HSP type and the second -one should be the ID that the client is going to use. Those information -can be found in the following file. +The mbox specifier of the "mboxes" property in the client node should contain +two cells. The first cell determines the HSP type and the second cell is used +to identify the mailbox that the client is going to use. -- <dt-bindings/mailbox/tegra186-hsp.h>. +For doorbells, the second cell specifies the index of the doorbell to use. + +For shared mailboxes, the second cell is composed of two fields: +- bits 31..24: + A bit mask of flags that further specify how the shared mailbox will be + used. Valid flags are: + - bit 31: + Defines the direction of the mailbox. If set, the mailbox will be used + as a producer (i.e. used to send data). If cleared, the mailbox is the + consumer of data sent by a producer. + +- bits 23.. 0: + The index of the shared mailbox to use. The number of available mailboxes + may vary by instance of the HSP block and SoC generation. + +The following file contains definitions that can be used to construct mailbox +specifiers: + + <dt-bindings/mailbox/tegra186-hsp.h> Example: |