linux-kernel - [PATCH 1/4] dt-bindings: dma: uart: add uart dma bindings

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Message-ID: <1537425673-18807-2-git-send-email-long.cheng@mediatek.com>
Date:   Thu, 20 Sep 2018 14:41:10 +0800
From:   Long Cheng <long.cheng@...iatek.com>
To:     Vinod Koul <vkoul@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
CC:     Matthias Brugger <matthias.bgg@...il.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jslaby@...e.com>, Ed Blake <ed.blake@...drel.com>,
        Long Cheng <long.cheng@...iatek.com>,
        <dmaengine@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linux-serial@...r.kernel.org>,
        <srv_heupstream@...iatek.com>,
        Yingjoe Chen <yingjoe.chen@...iatek.com>,
        YT Shen <yt.shen@...iatek.com>
Subject: [PATCH 1/4] dt-bindings: dma: uart: add uart dma bindings

add uart dma bindings

Signed-off-by: Long Cheng <long.cheng@...iatek.com>
---
 .../devicetree/bindings/dma/8250_mtk_dma.txt       |   32 ++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/dma/8250_mtk_dma.txt

diff --git a/Documentation/devicetree/bindings/dma/8250_mtk_dma.txt b/Documentation/devicetree/bindings/dma/8250_mtk_dma.txt
new file mode 100644
index 0000000..b140cf4
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/8250_mtk_dma.txt
@@ -0,0 +1,32 @@
+* Mediatek UART APDMA Controller
+
+Required properties:
+- compatible should contain:
+  * "mediatek,mt2712-uart-dma" for MT2712 compatible APDMA
+  * "mediatek,mt6577-uart-dma" for MT6577 and all of the above
+
+- reg: The base address of the APDMA register bank.
+
+- interrupts: A single interrupt specifier.
+
+- clocks : Must contain an entry for each entry in clock-names.
+  See ../clocks/clock-bindings.txt for details.
+- clock-names: The APDMA clock for register accesses
+
+Examples:
+
+	apdma: dma-controller@...00380 {
+		compatible = "mediatek,mt2712-uart-dma";
+		reg = <0 0x11000380 0 0x400>;
+		interrupts = <GIC_SPI 63 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_SPI 64 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_SPI 65 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_SPI 66 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_SPI 67 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_SPI 68 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_SPI 69 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_SPI 70 IRQ_TYPE_LEVEL_LOW>;
+		clocks = <&pericfg CLK_PERI_AP_DMA>;
+		clock-names = "apdma";
+		#dma-cells = <1>;
+	};
\ No newline at end of file
-- 
1.7.9.5