From dcfec3c09890120d86d4e86887074c76763075ca Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Tue, 20 Aug 2013 10:04:32 +0200 Subject: dma: imx-sdma: Add ROM script addresses to driver This adds the ROM script addresses for i.MX25, i.MX5x and i.MX6 to the SDMA driver needed for the driver to work without additional firmware. The ROM script addresses are SoC specific and in some cases even tapeout specific. This patch adds the ROM script addresses only for SoCs which do not have a tapeout specific SDMA ROM, because currently it's unclear how this case should be handled. Signed-off-by: Sascha Hauer Acked-by: Shawn Guo Signed-off-by: Vinod Koul --- Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'Documentation/devicetree') diff --git a/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt b/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt index 68cee4f5539f..4fa814d38321 100644 --- a/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt +++ b/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt @@ -1,7 +1,12 @@ * Freescale Smart Direct Memory Access (SDMA) Controller for i.MX Required properties: -- compatible : Should be "fsl,-sdma" +- compatible : Should be "fsl,imx31-sdma", "fsl,imx31-to1-sdma", + "fsl,imx31-to2-sdma", "fsl,imx35-sdma", "fsl,imx35-to1-sdma", + "fsl,imx35-to2-sdma", "fsl,imx51-sdma", "fsl,imx53-sdma" or + "fsl,imx6q-sdma". The -to variants should be preferred since they + allow to determnine the correct ROM script addresses needed for + the driver to work without additional firmware. - reg : Should contain SDMA registers location and length - interrupts : Should contain SDMA interrupt - #dma-cells : Must be <3>. -- cgit v1.2.3 From 4981c4dc194efb18f0e9a02f1b43e926f2f0d2bb Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Fri, 2 Aug 2013 16:50:36 +0200 Subject: DMA: shdma: switch DT mode to use configuration data from a match table This facilitates DMAC DT support by eliminating the need in AUXDATA and avoiding creating complex DT data. This also fits well with DMAC devices, of which SoCs often have multiple identical copies and it is perfectly valid to use a single configuration data set for all of them. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Vinod Koul --- Documentation/devicetree/bindings/dma/shdma.txt | 61 ++++++++++++++----------- 1 file changed, 35 insertions(+), 26 deletions(-) (limited to 'Documentation/devicetree') diff --git a/Documentation/devicetree/bindings/dma/shdma.txt b/Documentation/devicetree/bindings/dma/shdma.txt index c15994aa1939..2a3f3b8946b9 100644 --- a/Documentation/devicetree/bindings/dma/shdma.txt +++ b/Documentation/devicetree/bindings/dma/shdma.txt @@ -22,42 +22,51 @@ Optional properties (currently unused): * DMA controller Required properties: -- compatible: should be "renesas,shdma" +- compatible: should be of the form "renesas,shdma-", where should + be replaced with the desired SoC model, e.g. + "renesas,shdma-r8a73a4" for the system DMAC on r8a73a4 SoC Example: - dmac: dma-mux0 { + dmac: dma-multiplexer@0 { compatible = "renesas,shdma-mux"; #dma-cells = <1>; - dma-channels = <6>; + dma-channels = <20>; dma-requests = <256>; - reg = <0 0>; /* Needed for AUXDATA */ - #address-cells = <1>; - #size-cells = <1>; + #address-cells = <2>; + #size-cells = <2>; ranges; - dma0: shdma@fe008020 { - compatible = "renesas,shdma"; - reg = <0xfe008020 0x270>, - <0xfe009000 0xc>; + dma0: dma-controller@e6700020 { + compatible = "renesas,shdma-r8a73a4"; + reg = <0 0xe6700020 0 0x89e0>; interrupt-parent = <&gic>; - interrupts = <0 34 4 - 0 28 4 - 0 29 4 - 0 30 4 - 0 31 4 - 0 32 4 - 0 33 4>; + interrupts = <0 220 4 + 0 200 4 + 0 201 4 + 0 202 4 + 0 203 4 + 0 204 4 + 0 205 4 + 0 206 4 + 0 207 4 + 0 208 4 + 0 209 4 + 0 210 4 + 0 211 4 + 0 212 4 + 0 213 4 + 0 214 4 + 0 215 4 + 0 216 4 + 0 217 4 + 0 218 4 + 0 219 4>; interrupt-names = "error", "ch0", "ch1", "ch2", "ch3", - "ch4", "ch5"; - }; - - dma1: shdma@fe018020 { - ... - }; - - dma2: shdma@fe028020 { - ... + "ch4", "ch5", "ch6", "ch7", + "ch8", "ch9", "ch10", "ch11", + "ch12", "ch13", "ch14", "ch15", + "ch16", "ch17", "ch18", "ch19"; }; }; -- cgit v1.2.3 From 8e6152bc660e69f526c6bf163ff0ebfdab90f6cf Mon Sep 17 00:00:00 2001 From: Zhangfei Gao Date: Tue, 27 Aug 2013 10:20:10 +0800 Subject: dmaengine: Add hisilicon k3 DMA engine driver Add dmaengine driver for hisilicon k3 platform based on virt_dma Signed-off-by: Zhangfei Gao Tested-by: Kai Yang Acked-by: Arnd Bergmann Signed-off-by: Vinod Koul --- Documentation/devicetree/bindings/dma/k3dma.txt | 46 +++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 Documentation/devicetree/bindings/dma/k3dma.txt (limited to 'Documentation/devicetree') diff --git a/Documentation/devicetree/bindings/dma/k3dma.txt b/Documentation/devicetree/bindings/dma/k3dma.txt new file mode 100644 index 000000000000..23f8d712c3ce --- /dev/null +++ b/Documentation/devicetree/bindings/dma/k3dma.txt @@ -0,0 +1,46 @@ +* Hisilicon K3 DMA controller + +See dma.txt first + +Required properties: +- compatible: Should be "hisilicon,k3-dma-1.0" +- reg: Should contain DMA registers location and length. +- interrupts: Should contain one interrupt shared by all channel +- #dma-cells: see dma.txt, should be 1, para number +- dma-channels: physical channels supported +- dma-requests: virtual channels supported, each virtual channel + have specific request line +- clocks: clock required + +Example: + +Controller: + dma0: dma@fcd02000 { + compatible = "hisilicon,k3-dma-1.0"; + reg = <0xfcd02000 0x1000>; + #dma-cells = <1>; + dma-channels = <16>; + dma-requests = <27>; + interrupts = <0 12 4>; + clocks = <&pclk>; + status = "disable"; + }; + +Client: +Use specific request line passing from dmax +For example, i2c0 read channel request line is 18, while write channel use 19 + + i2c0: i2c@fcb08000 { + compatible = "snps,designware-i2c"; + dmas = <&dma0 18 /* read channel */ + &dma0 19>; /* write channel */ + dma-names = "rx", "tx"; + }; + + i2c1: i2c@fcb09000 { + compatible = "snps,designware-i2c"; + dmas = <&dma0 20 /* read channel */ + &dma0 21>; /* write channel */ + dma-names = "rx", "tx"; + }; + -- cgit v1.2.3