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dt-bindings: clock: clk-si5341: Add new attributes

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Add new silabs,xaxb-ext-clk and silabs,iovdd-33 properties.

Changed vdd-supply on top-level node to optional since it is not actually
used by the driver.

Removed vdd-supply from output sub-nodes, as it was not supported by the
driver and it is not easily possible to support this in that location with
the kernel regulator infrastructure. Changed to have vddoX-supply
attributes for each output on the top-level device node.

Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Link: https://lore.kernel.org/r/20210325192643.2190069-2-robert.hancock@calian.com
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Robert Hancock 2021-03-25 13:26:35 -06:00 committed by Stephen Boyd
parent 6efb943b86
commit c832bb98d3
1 changed files with 10 additions and 6 deletions
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16
Documentation/devicetree/bindings/clock/silabs,si5341.txt
View file

@ -24,9 +24,8 @@ it.
The device type, speed grade and revision are determined runtime by probing.
The driver currently only supports XTAL input mode, and does not support any
fancy input configurations. They can still be programmed into the chip and
the driver will leave them "as is".
The driver currently does not support any fancy input configurations. They can
still be programmed into the chip and the driver will leave them "as is".
==I2C device node==
@ -45,9 +44,9 @@ Required properties:
corresponding to inputs. Use a fixed clock for the "xtal" input.
At least one must be present.
- clock-names: One of: "xtal", "in0", "in1", "in2"
- vdd-supply: Regulator node for VDD
Optional properties:
- vdd-supply: Regulator node for VDD
- vdda-supply: Regulator node for VDDA
- vdds-supply: Regulator node for VDDS
- silabs,pll-m-num, silabs,pll-m-den: Numerator and denominator for PLL
@ -60,7 +59,14 @@ Optional properties:
be initialized, and always performs the soft-reset routine. Since this will
temporarily stop all output clocks, don't do this if the chip is generating
the CPU clock for example.
- silabs,xaxb-ext-clk: When present, indicates that the XA/XB pins are used
in EXTCLK (external reference clock) rather than XTAL (crystal) mode.
- interrupts: Interrupt for INTRb pin.
- silabs,iovdd-33: When present, indicates that the I2C lines are using 3.3V
rather than 1.8V thresholds.
- vddoX-supply (where X is an output index): Regulator node for VDDO for the
specified output. The driver selects the output VDD_SEL setting based on this
voltage.
- #address-cells: shall be set to 1.
- #size-cells: shall be set to 0.
@ -77,8 +83,6 @@ Required child node properties:
- reg: number of clock output.
Optional child node properties:
- vdd-supply: Regulator node for VDD for this output. The driver selects default
values for common-mode and amplitude based on the voltage.
- silabs,format: Output format, one of:
1 = differential (defaults to LVDS levels)
2 = low-power (defaults to HCSL levels)