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dt-bindings: arm: Extend SCMI to support new reset protocol

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SCMIv2.0 adds a new Reset Management Protocol to manage various reset
states a given device or domain can enter. Extend the existing SCMI
bindings to add reset protocol support by re-using the reset bindings
for both reset providers and consumers.

Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: devicetree@vger.kernel.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Sudeep Holla 2019-07-08 09:41:04 +01:00
parent 823839571d
commit ae39913ce4
1 changed files with 17 additions and 0 deletions
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17
Documentation/devicetree/bindings/arm/arm,scmi.txt
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@ -73,6 +73,16 @@ Required properties:
as used by the firmware. Refer to platform details
for your implementation for the IDs to use.
Reset signal bindings for the reset domains based on SCMI Message Protocol
------------------------------------------------------------
This binding for the SCMI reset domain providers uses the generic reset
signal binding[5].
Required properties:
- #reset-cells : Should be 1. Contains the reset domain ID value used
by SCMI commands.
SRAM and Shared Memory for SCMI
-------------------------------
@ -93,6 +103,7 @@ Required sub-node properties:
[2] Documentation/devicetree/bindings/power/power_domain.txt
[3] Documentation/devicetree/bindings/thermal/thermal.txt
[4] Documentation/devicetree/bindings/sram/sram.txt
[5] Documentation/devicetree/bindings/reset/reset.txt
Example:
@ -152,6 +163,11 @@ firmware {
reg = <0x15>;
#thermal-sensor-cells = <1>;
};
scmi_reset: protocol@16 {
reg = <0x16>;
#reset-cells = <1>;
};
};
};
@ -166,6 +182,7 @@ hdlcd@7ff60000 {
reg = <0 0x7ff60000 0 0x1000>;
clocks = <&scmi_clk 4>;
power-domains = <&scmi_devpd 1>;
resets = <&scmi_reset 10>;
};
thermal-zones {