serial: sirf: add a new uart type support
in CSR A7DA SoC, uart6 located at BT module and it need multiple clock
sources, so for "sirf,marco-bt-uart" compatible uarts, drivers take 3
clock sources and enable them.
this patch also replaces clk_get by devm_clk_get function and fix DT
binding document in which we missed to fix when we added marco platform
in commit 909102db44f "serial: sirf: add support for Marco chip".
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/Documentation/devicetree/bindings/serial/sirf-uart.txt b/Documentation/devicetree/bindings/serial/sirf-uart.txt
index a2dfc65..3acdd96 100644
--- a/Documentation/devicetree/bindings/serial/sirf-uart.txt
+++ b/Documentation/devicetree/bindings/serial/sirf-uart.txt
@@ -1,7 +1,9 @@
* CSR SiRFprimaII/atlasVI Universal Synchronous Asynchronous Receiver/Transmitter *
Required properties:
-- compatible : Should be "sirf,prima2-uart" or "sirf, prima2-usp-uart"
+- compatible : Should be "sirf,prima2-uart", "sirf, prima2-usp-uart",
+ "sirf,marco-uart" or "sirf,marco-bt-uart" which means
+ uart located in BT module and used for BT.
- reg : Offset and length of the register set for the device
- interrupts : Should contain uart interrupt
- fifosize : Should define hardware rx/tx fifo size
@@ -31,3 +33,15 @@
rts-gpios = <&gpio 15 0>;
cts-gpios = <&gpio 46 0>;
};
+
+for uart use in BT module,
+uart6: uart@11000000 {
+ cell-index = <6>;
+ compatible = "sirf,marco-bt-uart", "sirf,marco-uart";
+ reg = <0x11000000 0x1000>;
+ interrupts = <0 100 0>;
+ clocks = <&clks 138>, <&clks 140>, <&clks 141>;
+ clock-names = "uart", "general", "noc";
+ fifosize = <128>;
+ status = "disabled";
+}