7485d26b7e
This patch replaces the get_mctrl/set_mctrl stubs with modem control line read/write access through the GPIO lib. Available modem control lines are described in the device tree using GPIO bindings. The driver expect a GPIO pin for each of the CTS, RTS, DCD, DSR, DTR and RI signals. Unused control lines can be left out. Signed-off-by: Laurent Pinchart <laurentp@cse-semaphore.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
33 lines
717 B
Plaintext
33 lines
717 B
Plaintext
* Serial
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Currently defined compatibles:
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- fsl,cpm1-smc-uart
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- fsl,cpm2-smc-uart
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- fsl,cpm1-scc-uart
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- fsl,cpm2-scc-uart
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- fsl,qe-uart
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Modem control lines connected to GPIO controllers are listed in the gpios
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property as described in booting-without-of.txt, section IX.1 in the following
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order:
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CTS, RTS, DCD, DSR, DTR, and RI.
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The gpios property is optional and can be left out when control lines are
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not used.
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Example:
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serial@11a00 {
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device_type = "serial";
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compatible = "fsl,mpc8272-scc-uart",
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"fsl,cpm2-scc-uart";
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reg = <11a00 20 8000 100>;
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interrupts = <28 8>;
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interrupt-parent = <&PIC>;
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fsl,cpm-brg = <1>;
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fsl,cpm-command = <00800000>;
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gpios = <&gpio_c 15 0
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&gpio_d 29 0>;
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};
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