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author | Sascha Hauer <s.hauer@pengutronix.de> | 2017-01-10 08:26:15 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2017-01-10 08:48:45 +0100 |
commit | a40531fb3c11dc4ee8cca43c91b471da1fd3c1ab (patch) | |
tree | 35f886d87a77df7bac8a587a04647691db541a2e /dts/Bindings/mailbox | |
parent | 81462901ce3d677ce318150f7027e2ce1cf97c41 (diff) | |
download | barebox-a40531fb3c11dc4ee8cca43c91b471da1fd3c1ab.tar.gz barebox-a40531fb3c11dc4ee8cca43c91b471da1fd3c1ab.tar.xz |
dts: update to v4.10-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/mailbox')
-rw-r--r-- | dts/Bindings/mailbox/brcm,bcm2835-mbox.txt | 2 | ||||
-rw-r--r-- | dts/Bindings/mailbox/nvidia,tegra186-hsp.txt | 52 |
2 files changed, 53 insertions, 1 deletions
diff --git a/dts/Bindings/mailbox/brcm,bcm2835-mbox.txt b/dts/Bindings/mailbox/brcm,bcm2835-mbox.txt index e893615ef6..b48d7d3001 100644 --- a/dts/Bindings/mailbox/brcm,bcm2835-mbox.txt +++ b/dts/Bindings/mailbox/brcm,bcm2835-mbox.txt @@ -12,7 +12,7 @@ Required properties: Example: -mailbox: mailbox@7e00b800 { +mailbox: mailbox@7e00b880 { compatible = "brcm,bcm2835-mbox"; reg = <0x7e00b880 0x40>; interrupts = <0 1>; diff --git a/dts/Bindings/mailbox/nvidia,tegra186-hsp.txt b/dts/Bindings/mailbox/nvidia,tegra186-hsp.txt new file mode 100644 index 0000000000..b99d25fc2f --- /dev/null +++ b/dts/Bindings/mailbox/nvidia,tegra186-hsp.txt @@ -0,0 +1,52 @@ +NVIDIA Tegra Hardware Synchronization Primitives (HSP) + +The HSP modules are used for the processors to share resources and communicate +together. It provides a set of hardware synchronization primitives for +interprocessor communication. So the interprocessor communication (IPC) +protocols can use hardware synchronization primitives, when operating between +two processors not in an SMP relationship. + +The features that HSP supported are shared mailboxes, shared semaphores, +arbitrated semaphores and doorbells. + +Required properties: +- name : Should be hsp +- compatible + Array of strings. + one of: + - "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" + Users of this binding MUST look up entries in the interrupt property + by name, using this interrupt-names property to do so. +- interrupts + Array of interrupt specifiers. + Must contain one entry per entry in the interrupt-names property, + 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. + +- <dt-bindings/mailbox/tegra186-hsp.h>. + +Example: + +hsp_top0: hsp@3c00000 { + compatible = "nvidia,tegra186-hsp"; + reg = <0x0 0x03c00000 0x0 0xa0000>; + interrupts = <GIC_SPI 176 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names = "doorbell"; + #mbox-cells = <2>; +}; + +client { + ... + mboxes = <&hsp_top0 TEGRA_HSP_MBOX_TYPE_DB TEGRA_HSP_DB_MASTER_XXX>; +}; |