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author | Sascha Hauer <s.hauer@pengutronix.de> | 2019-01-14 09:09:57 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-01-14 09:09:57 +0100 |
commit | 33fdc89d4cbd74aa54c28dc61d62972ab164e64d (patch) | |
tree | da5ceff551dc1fdf2f2cc40e97a08035f9ef84fb /dts/Bindings/mailbox | |
parent | 13a52906ce67ed2ce67bfc10714934ffa6c5d646 (diff) | |
download | barebox-33fdc89d4cbd74aa54c28dc61d62972ab164e64d.tar.gz barebox-33fdc89d4cbd74aa54c28dc61d62972ab164e64d.tar.xz |
dts: update to v5.0-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/mailbox')
-rw-r--r-- | dts/Bindings/mailbox/nvidia,tegra186-hsp.txt | 30 |
1 files changed, 25 insertions, 5 deletions
diff --git a/dts/Bindings/mailbox/nvidia,tegra186-hsp.txt b/dts/Bindings/mailbox/nvidia,tegra186-hsp.txt index b99d25fc2f..ff3eafc5a8 100644 --- a/dts/Bindings/mailbox/nvidia,tegra186-hsp.txt +++ b/dts/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: |