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| -rw-r--r-- | Documentation/devicetree/bindings/serial/mtk-uart.txt | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/serial/mtk-uart.txt b/Documentation/devicetree/bindings/serial/mtk-uart.txt new file mode 100644 index 000000000..647b5aee8 --- /dev/null +++ b/Documentation/devicetree/bindings/serial/mtk-uart.txt @@ -0,0 +1,56 @@ +* MediaTek Universal Asynchronous Receiver/Transmitter (UART) + +Required properties: +- compatible should contain: + * "mediatek,mt2701-uart" for MT2701 compatible UARTS + * "mediatek,mt2712-uart" for MT2712 compatible UARTS + * "mediatek,mt6580-uart" for MT6580 compatible UARTS + * "mediatek,mt6582-uart" for MT6582 compatible UARTS + * "mediatek,mt6589-uart" for MT6589 compatible UARTS + * "mediatek,mt6755-uart" for MT6755 compatible UARTS + * "mediatek,mt6765-uart" for MT6765 compatible UARTS + * "mediatek,mt6779-uart" for MT6779 compatible UARTS + * "mediatek,mt6795-uart" for MT6795 compatible UARTS + * "mediatek,mt6797-uart" for MT6797 compatible UARTS + * "mediatek,mt7622-uart" for MT7622 compatible UARTS + * "mediatek,mt7623-uart" for MT7623 compatible UARTS + * "mediatek,mt7629-uart" for MT7629 compatible UARTS + * "mediatek,mt8127-uart" for MT8127 compatible UARTS + * "mediatek,mt8135-uart" for MT8135 compatible UARTS + * "mediatek,mt8173-uart" for MT8173 compatible UARTS + * "mediatek,mt8183-uart", "mediatek,mt6577-uart" for MT8183 compatible UARTS + * "mediatek,mt8192-uart", "mediatek,mt6577-uart" for MT8192 compatible UARTS + * "mediatek,mt8516-uart" for MT8516 compatible UARTS + * "mediatek,mt6577-uart" for MT6577 and all of the above + +- reg: The base address of the UART register bank. + +- interrupts: + index 0: an interrupt specifier for the UART controller itself + index 1: optional, an interrupt specifier with edge sensitivity on Rx pin to + support Rx in-band wake up. If one would like to use this feature, + one must create an addtional pinctrl to reconfigure Rx pin to normal + GPIO before suspend. + +- clocks : Must contain an entry for each entry in clock-names. + See ../clocks/clock-bindings.txt for details. +- clock-names: + - "baud": The clock the baudrate is derived from + - "bus": The bus clock for register accesses (optional) + +For compatibility with older device trees an unnamed clock is used for the +baud clock if the baudclk does not exist. Do not use this for new designs. + +Example: + + uart0: serial@11006000 { + compatible = "mediatek,mt6589-uart", "mediatek,mt6577-uart"; + reg = <0x11006000 0x400>; + interrupts = <GIC_SPI 51 IRQ_TYPE_LEVEL_LOW>, + <GIC_SPI 52 IRQ_TYPE_EDGE_FALLING>; + clocks = <&uart_clk>, <&bus_clk>; + clock-names = "baud", "bus"; + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&uart_pin>; + pinctrl-1 = <&uart_pin_sleep>; + }; |