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dt-bindings: clk: vc5: Add properties for configuring the SD/OE pin

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These properties allow configuring the SD/OE pin as described in the
datasheet.

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Luca Ceresoli <luca@lucaceresoli.net>
Link: https://lore.kernel.org/r/20210809223813.3766204-1-sean.anderson@seco.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Sean Anderson 2021-08-09 18:38:11 -04:00 committed by Stephen Boyd
parent e73f0f0ee7
commit 275e4e2dc0
1 changed files with 40 additions and 0 deletions
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40
Documentation/devicetree/bindings/clock/idt,versaclock5.yaml
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@ -30,6 +30,20 @@ description: |
3 -- OUT3
4 -- OUT4
The idt,shutdown and idt,output-enable-active properties control the
SH (en_global_shutdown) and SP bits of the Primary Source and Shutdown
Register, respectively. Their behavior is summarized by the following
table:
SH SP Output when the SD/OE pin is Low/High
== == =====================================
0 0 Active/Inactive
0 1 Inactive/Active
1 0 Active/Shutdown
1 1 Inactive/Shutdown
The case where SH and SP are both 1 is likely not very interesting.
maintainers:
- Luca Ceresoli <luca@lucaceresoli.net>
@ -64,6 +78,26 @@ properties:
maximum: 22760
description: Optional load capacitor for XTAL1 and XTAL2
idt,shutdown:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 1]
description: |
If 1, this enables the shutdown functionality: the chip will be
shut down if the SD/OE pin is driven high. If 0, this disables the
shutdown functionality: the chip will never be shut down based on
the value of the SD/OE pin. This property corresponds to the SH
bit of the Primary Source and Shutdown Register.
idt,output-enable-active:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 1]
description: |
If 1, this enables output when the SD/OE pin is high, and disables
output when the SD/OE pin is low. If 0, this disables output when
the SD/OE pin is high, and enables output when the SD/OE pin is
low. This corresponds to the SP bit of the Primary Source and
Shutdown Register.
patternProperties:
"^OUT[1-4]$":
type: object
@ -90,6 +124,8 @@ required:
- compatible
- reg
- '#clock-cells'
- idt,shutdown
- idt,output-enable-active
allOf:
- if:
@ -139,6 +175,10 @@ examples:
clocks = <&ref25m>;
clock-names = "xin";
/* Set the SD/OE pin's settings */
idt,shutdown = <0>;
idt,output-enable-active = <0>;
OUT1 {
idt,mode = <VC5_CMOSD>;
idt,voltage-microvolt = <1800000>;