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serial: sh-sci: Add DMA support to the DT binding documentation

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Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Geert Uytterhoeven 2015-05-20 19:46:24 +02:00 committed by Greg Kroah-Hartman
parent 9e91597f24
commit 3c99121ca5
1 changed files with 7 additions and 0 deletions
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7
Documentation/devicetree/bindings/serial/renesas,sci-serial.txt
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@ -44,6 +44,11 @@ Required properties:
Note: Each enabled SCIx UART should have an alias correctly numbered in the Note: Each enabled SCIx UART should have an alias correctly numbered in the
"aliases" node. "aliases" node.
Optional properties:
- dmas: Must contain a list of two references to DMA specifiers, one for
transmission, and one for reception.
- dma-names: Must contain a list of two DMA names, "tx" and "rx".
Example: Example:
aliases { aliases {
serial0 = &scifa0; serial0 = &scifa0;
@ -56,4 +61,6 @@ Example:
interrupts = <0 144 IRQ_TYPE_LEVEL_HIGH>; interrupts = <0 144 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&mstp2_clks R8A7790_CLK_SCIFA0>; clocks = <&mstp2_clks R8A7790_CLK_SCIFA0>;
clock-names = "sci_ick"; clock-names = "sci_ick";
dmas = <&dmac0 0x21>, <&dmac0 0x22>;
dma-names = "tx", "rx";
}; };