These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / serial / mtk-uart.txt

diff --git a/kernel/Documentation/devicetree/bindings/serial/mtk-uart.txt b/kernel/Documentation/devicetree/bindings/serial/mtk-uart.txt
index 4415226..2d47add 100644 (file)
--- a/kernel/Documentation/devicetree/bindings/serial/mtk-uart.txt
+++ b/kernel/Documentation/devicetree/bindings/serial/mtk-uart.txt
@@ -5,16 +5,25 @@ Required properties:
   * "mediatek,mt8135-uart" for MT8135 compatible UARTS
   * "mediatek,mt8127-uart" for MT8127 compatible UARTS
   * "mediatek,mt8173-uart" for MT8173 compatible UARTS
+  * "mediatek,mt6795-uart" for MT6795 compatible UARTS
   * "mediatek,mt6589-uart" for MT6589 compatible UARTS
   * "mediatek,mt6582-uart" for MT6582 compatible UARTS
-  * "mediatek,mt6577-uart" for all compatible UARTS (MT8173, MT6589, MT6582, 
-       MT6577)
+  * "mediatek,mt6580-uart" for MT6580 compatible UARTS
+  * "mediatek,mt6577-uart" for all compatible UARTS (MT8173, MT6795,
+        MT6589, MT6582, MT6580, MT6577)
 
 - reg: The base address of the UART register bank.
 
 - interrupts: A single interrupt specifier.
 
-- clocks: Clock driving the hardware.
+- 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:
 
@@ -22,5 +31,6 @@ Example:
                compatible = "mediatek,mt6589-uart", "mediatek,mt6577-uart";
                reg = <0x11006000 0x400>;
                interrupts = <GIC_SPI 51 IRQ_TYPE_LEVEL_LOW>;
-               clocks = <&uart_clk>;
+               clocks = <&uart_clk>, <&bus_clk>;
+               clock-names = "baud", "bus";
        };