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dt-bindings: can: flexcan: add PE clock source property to device tree

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The FlexCAN controller can parse clock source property from DTS file to
select PE clock source.

Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Dong Aisheng 2018-12-13 07:07:57 +00:00 committed by Marc Kleine-Budde
parent ca10989632
commit 9d73399277
1 changed files with 8 additions and 0 deletions
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8
Documentation/devicetree/bindings/net/can/fsl-flexcan.txt
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@ -32,6 +32,13 @@ Optional properties:
ack_gpr is the gpr register offset of CAN stop acknowledge. ack_gpr is the gpr register offset of CAN stop acknowledge.
ack_bit is the bit offset of CAN stop acknowledge. ack_bit is the bit offset of CAN stop acknowledge.
- fsl,clk-source: Select the clock source to the CAN Protocol Engine (PE).
It's SoC Implementation dependent. Refer to RM for detailed
definition. If this property is not set in device tree node
then driver selects clock source 1 by default.
0: clock source 0 (oscillator clock)
1: clock source 1 (peripheral clock)
Example: Example:
can@1c000 { can@1c000 {
@ -40,4 +47,5 @@ Example:
interrupts = <48 0x2>; interrupts = <48 0x2>;
interrupt-parent = <&mpic>; interrupt-parent = <&mpic>;
clock-frequency = <200000000>; // filled in by bootloader clock-frequency = <200000000>; // filled in by bootloader
fsl,clk-source = <0>; // select clock source 0 for PE
}; };