7d4008ebb1
The Synopsys DesignWare 8250 is an 8250 that has an extra interrupt that gets raised when writing to the LCR when busy. To handle this we need special serial_out, serial_in and handle_irq methods. Add a new platform driver that uses these accessors. Cc: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
25 lines
769 B
Text
25 lines
769 B
Text
* Synopsys DesignWare ABP UART
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Required properties:
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- compatible : "snps,dw-apb-uart"
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- reg : offset and length of the register set for the device.
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- interrupts : should contain uart interrupt.
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- clock-frequency : the input clock frequency for the UART.
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Optional properties:
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- reg-shift : quantity to shift the register offsets by. If this property is
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not present then the register offsets are not shifted.
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- reg-io-width : the size (in bytes) of the IO accesses that should be
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performed on the device. If this property is not present then single byte
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accesses are used.
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Example:
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uart@80230000 {
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compatible = "snps,dw-apb-uart";
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reg = <0x80230000 0x100>;
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clock-frequency = <3686400>;
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interrupts = <10>;
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reg-shift = <2>;
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reg-io-width = <4>;
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};
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