* [PATCH] dt-bindings: dmaengine: Add MediaTek Command-Queue DMA controller bindings
@ 2019-02-14 7:40 shun-chih.yu
2019-02-14 7:40 ` [PATCH 1/1] " shun-chih.yu
0 siblings, 1 reply; 3+ messages in thread
From: shun-chih.yu @ 2019-02-14 7:40 UTC (permalink / raw)
To: Sean Wang, Vinod Koul, Rob Herring, Matthias Brugger, Dan Williams
Cc: devicetree, linux-kernel, srv_wsdupstream, linux-mediatek,
dmaengine, linux-arm-kernel
Add document the devicetree bindings for MediaTek Command-Queue DMA controller.
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH 1/1] dt-bindings: dmaengine: Add MediaTek Command-Queue DMA controller bindings
2019-02-14 7:40 [PATCH] dt-bindings: dmaengine: Add MediaTek Command-Queue DMA controller bindings shun-chih.yu
@ 2019-02-14 7:40 ` shun-chih.yu
2019-02-18 14:47 ` Rob Herring
0 siblings, 1 reply; 3+ messages in thread
From: shun-chih.yu @ 2019-02-14 7:40 UTC (permalink / raw)
To: Sean Wang, Vinod Koul, Rob Herring, Matthias Brugger, Dan Williams
Cc: devicetree, linux-kernel, srv_wsdupstream, linux-mediatek,
Shun-Chih Yu, dmaengine, linux-arm-kernel
From: Shun-Chih Yu <shun-chih.yu@mediatek.com>
Document the devicetree bindings for MediaTek Command-Queue DMA controller
which could be found on MT6765 SoC or other similar Mediatek SoCs.
Change-Id: I9736c8cac9be160358feeab935fabaffc5730519
Signed-off-by: Shun-Chih Yu <shun-chih.yu@mediatek.com>
---
.../devicetree/bindings/dma/mtk-cqdma.txt | 31 ++++++++++++++++++++
1 file changed, 31 insertions(+)
create mode 100644 Documentation/devicetree/bindings/dma/mtk-cqdma.txt
diff --git a/Documentation/devicetree/bindings/dma/mtk-cqdma.txt b/Documentation/devicetree/bindings/dma/mtk-cqdma.txt
new file mode 100644
index 0000000..fb12927
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/mtk-cqdma.txt
@@ -0,0 +1,31 @@
+MediaTek Command-Queue DMA Controller
+==================================
+
+Required properties:
+
+- compatible: Must be "mediatek,mt6765-cqdma" for MT6765.
+- reg: Should contain the base address and length for each channel.
+- interrupts: Should contain references to the interrupts for each channel.
+- clocks: Should be the clock specifiers corresponding to the entry in
+ clock-names property.
+- clock-names: Should contain "cqdma" entries.
+- dma-channels: The number of DMA channels supported by the controller.
+- dma-requests: The number of DMA request supported by the controller.
+- #dma-cells: The length of the DMA specifier, must be <1>. This one cell
+ in dmas property of a client device represents the channel
+ number.
+Example:
+
+ cqdma: dma-controller@10212000 {
+ compatible = "mediatek,mt6765-cqdma";
+ reg = <0 0x10212000 0 0x1000>;
+ interrupts = <GIC_SPI 113 IRQ_TYPE_LEVEL_LOW>,
+ <GIC_SPI 114 IRQ_TYPE_LEVEL_LOW>;
+ clocks = <&infracfg CLK_IFR_CQ_DMA>;
+ clock-names = "cqdma";
+ dma-channels = <2>;
+ dma-requests = <32>;
+ #dma-cells = <1>;
+ };
+
+DMA clients must use the format described in dma/dma.txt file.
--
1.7.9.5
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH 1/1] dt-bindings: dmaengine: Add MediaTek Command-Queue DMA controller bindings
2019-02-14 7:40 ` [PATCH 1/1] " shun-chih.yu
@ 2019-02-18 14:47 ` Rob Herring
0 siblings, 0 replies; 3+ messages in thread
From: Rob Herring @ 2019-02-18 14:47 UTC (permalink / raw)
To: shun-chih.yu
Cc: devicetree, Sean Wang, linux-kernel, srv_wsdupstream, dmaengine,
Vinod Koul, linux-mediatek, Matthias Brugger, Dan Williams,
linux-arm-kernel
On Thu, Feb 14, 2019 at 03:40:58PM +0800, shun-chih.yu@mediatek.com wrote:
> From: Shun-Chih Yu <shun-chih.yu@mediatek.com>
>
> Document the devicetree bindings for MediaTek Command-Queue DMA controller
> which could be found on MT6765 SoC or other similar Mediatek SoCs.
>
> Change-Id: I9736c8cac9be160358feeab935fabaffc5730519
Drop this.
> Signed-off-by: Shun-Chih Yu <shun-chih.yu@mediatek.com>
> ---
> .../devicetree/bindings/dma/mtk-cqdma.txt | 31 ++++++++++++++++++++
> 1 file changed, 31 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/dma/mtk-cqdma.txt
>
> diff --git a/Documentation/devicetree/bindings/dma/mtk-cqdma.txt b/Documentation/devicetree/bindings/dma/mtk-cqdma.txt
> new file mode 100644
> index 0000000..fb12927
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/dma/mtk-cqdma.txt
> @@ -0,0 +1,31 @@
> +MediaTek Command-Queue DMA Controller
> +==================================
> +
> +Required properties:
> +
> +- compatible: Must be "mediatek,mt6765-cqdma" for MT6765.
> +- reg: Should contain the base address and length for each channel.
> +- interrupts: Should contain references to the interrupts for each channel.
> +- clocks: Should be the clock specifiers corresponding to the entry in
> + clock-names property.
> +- clock-names: Should contain "cqdma" entries.
> +- dma-channels: The number of DMA channels supported by the controller.
What's the range of valid values?
> +- dma-requests: The number of DMA request supported by the controller.
What's the range of valid values?
> +- #dma-cells: The length of the DMA specifier, must be <1>. This one cell
> + in dmas property of a client device represents the channel
> + number.
> +Example:
> +
> + cqdma: dma-controller@10212000 {
> + compatible = "mediatek,mt6765-cqdma";
> + reg = <0 0x10212000 0 0x1000>;
Should be 2 entries here since there are 2 channels? Or the description
above is wrong.
> + interrupts = <GIC_SPI 113 IRQ_TYPE_LEVEL_LOW>,
> + <GIC_SPI 114 IRQ_TYPE_LEVEL_LOW>;
> + clocks = <&infracfg CLK_IFR_CQ_DMA>;
> + clock-names = "cqdma";
> + dma-channels = <2>;
> + dma-requests = <32>;
> + #dma-cells = <1>;
> + };
> +
> +DMA clients must use the format described in dma/dma.txt file.
> --
> 1.7.9.5
>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2019-02-18 14:47 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-02-14 7:40 [PATCH] dt-bindings: dmaengine: Add MediaTek Command-Queue DMA controller bindings shun-chih.yu
2019-02-14 7:40 ` [PATCH 1/1] " shun-chih.yu
2019-02-18 14:47 ` Rob Herring
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).