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dt-bindings: fsl: scu: update power domain binding 

Update the power domain binding with #power-domain-cells 1 format.
The first cell can be a global SCU power domain and the 2nd cell
the device ID. With this approach, we may remove all the sub power
domain nodes from device tree which can relief the device tree a lot.

Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <kernel@pengutronix.de>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
A.s. Dong 2018-11-01 15:20:02 +00:00 committed by Shawn Guo
parent 3501ce96bf
commit d357b3134c
1 changed files with 8 additions and 29 deletions
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37
Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
View File

@ -58,19 +58,11 @@ This binding for the SCU power domain providers uses the generic power
domain binding[2].
Required properties:
- compatible: Should be "fsl,scu-pd".
- #address-cells: Should be 1.
- #size-cells: Should be 0.
Required properties for power domain sub nodes:
- #power-domain-cells: Must be 0.
Optional Properties:
- reg: Resource ID of this power domain.
No exist means uncontrollable by user.
- compatible: Should be "fsl,imx8qxp-scu-pd".
- #power-domain-cells: Must be 1. Contains the Resource ID used by
SCU commands.
See detailed Resource ID list from:
include/dt-bindings/power/imx-rsrc.h
- power-domains: phandle pointing to the parent power domain.
include/dt-bindings/firmware/imx/rsrc.h
Clock bindings based on SCU Message Protocol
------------------------------------------------------------
@ -152,22 +144,9 @@ firmware {
...
};
imx8qx-pm {
compatible = "fsl,scu-pd";
#address-cells = <1>;
#size-cells = <0>;
pd_dma: dma-power-domain {
#power-domain-cells = <0>;
pd_dma_lpuart0: dma-lpuart0@57 {
reg = <SC_R_UART_0>;
#power-domain-cells = <0>;
power-domains = <&pd_dma>;
};
...
};
...
pd: imx8qx-pd {
compatible = "fsl,imx8qxp-scu-pd";
#power-domain-cells = <1>;
};
};
};
@ -179,5 +158,5 @@ serial@5a060000 {
clocks = <&clk IMX8QXP_UART0_CLK>,
<&clk IMX8QXP_UART0_IPG_CLK>;
clock-names = "per", "ipg";
power-domains = <&pd_dma_lpuart0>;
power-domains = <&pd IMX_SC_R_UART_0>;
};