|author||Arnd Bergmann <firstname.lastname@example.org>||2013-01-28 16:24:37 +0000|
|committer||Arnd Bergmann <email@example.com>||2013-03-12 17:56:09 +0100|
|parent||spi: pl022: use generic DMA slave configuration if possible (diff)|
serial: pl011: use generic DMA slave configuration if possible
With the new OF DMA binding, it is possible to completely avoid the need for platform_data for configuring a DMA channel. In cases where the platform has already been converted, calling dma_request_slave_channel should get all the necessary information from the device tree. This also adds a binding document specific to the pl011 controller, and extends the generic primecell binding to mention "dmas" and other common properties. Like the patch that converts the dw_dma controller, this is completely untested and is looking for someone to try it out. Signed-off-by: Arnd Bergmann <firstname.lastname@example.org> Acked-by: Grant Likely <email@example.com> Acked-by: Greg Kroah-Hartman <firstname.lastname@example.org> Cc: Russell King <email@example.com> Cc: Jiri Slaby <firstname.lastname@example.org> Cc: Viresh Kumar <email@example.com> Cc: firstname.lastname@example.org Cc: email@example.com
Diffstat (limited to 'Documentation/devicetree/bindings/arm/primecell.txt')
1 files changed, 18 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/arm/primecell.txt b/Documentation/devicetree/bindings/arm/primecell.txt
index 64fc82bc8928..0df6acacfaea 100644
@@ -16,14 +16,31 @@ Optional properties:
- clocks : From common clock binding. First clock is phandle to clock for apb
pclk. Additional clocks are optional and specific to those peripherals.
- clock-names : From common clock binding. Shall be "apb_pclk" for first clock.
+- dmas : From common DMA binding. If present, refers to one or more dma channels.
+- dma-names : From common DMA binding, needs to match the 'dmas' property.
+ Devices with exactly one receive and transmit channel shall name
+ these "rx" and "tx", respectively.
+- pinctrl-<n> : Pinctrl states as described in bindings/pinctrl/pinctrl-bindings.txt
+- pinctrl-names : Names corresponding to the numbered pinctrl states
+- interrupts : one or more interrupt specifiers
+- interrupt-names : names corresponding to the interrupts properties
compatible = "arm,pl011", "arm,primecell";
arm,primecell-periphid = <0x00341011>;
clocks = <&pclk>;
clock-names = "apb_pclk";
+ dmas = <&dma-controller 4>, <&dma-controller 5>;
+ dma-names = "rx", "tx";
+ pinctrl-0 = <&uart0_default_mux>, <&uart0_default_mode>;
+ pinctrl-1 = <&uart0_sleep_mode>;
+ pinctrl-names = "default","sleep";
+ interrupts = <0 11 0x4>;