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/linux/Documentation/devicetree/bindings/serial/
H A Datmel,at91-usart.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/serial/atmel,at91-usart.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Richard Genoud <richard.genoud@bootlin.com>
16 - enum:
17 - atmel,at91rm9200-usart
18 - atmel,at91sam9260-usart
19 - items:
20 - const: atmel,at91rm9200-dbgu
[all …]
H A Dfsl-imx-uart.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/serial/fsl-imx-uart.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Fabio Estevam <festevam@gmail.com>
15 - const: fsl,imx1-uart
16 - const: fsl,imx21-uart
17 - items:
18 - enum:
19 - fsl,imx25-uart
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/linux/arch/arm/boot/dts/microchip/
H A Dat91-kizbox3_common.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 * at91-kizbox3.dts - Device Tree Include file for Overkiz Kizbox 3
12 /dts-v1/;
14 #include "sama5d2-pinfunc.h"
15 #include <dt-bindings/gpio/gpio.h>
16 #include <dt-bindings/mfd/atmel-flexcom.h>
17 #include <dt-bindings/pinctrl/at91.h>
18 #include <dt-bindings/pwm/pwm.h>
36 stdout-path = "serial1:115200n8";
41 clock-frequency = <32768>;
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H A Dsama7g5.dtsi1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
3 * sama7g5.dtsi - Device Tree Include file for SAMA7G5 family SoC
12 #include <dt-bindings/iio/adc/at91-sama5d2_adc.h>
13 #include <dt-bindings/interrupt-controller/irq.h>
14 #include <dt-bindings/interrupt-controller/arm-gic.h>
15 #include <dt-bindings/clock/at91.h>
16 #include <dt-bindings/dma/at91.h>
17 #include <dt-bindings/gpio/gpio.h>
18 #include <dt-bindings/mfd/at91-usart.h>
19 #include <dt-bindings/nvmem/microchip,sama7g5-otpc.h>
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H A Dat91-wb50n.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 * at91-wb50n.dtsi - Device Tree include file for wb50n cpu module
12 model = "Laird Workgroup Bridge 50N - Atmel SAMA5D";
17 stdout-path = "serial0:115200n8";
38 clock-frequency = <32768>;
42 clock-frequency = <12000000>;
46 atmel,osc-bypass;
50 pinctrl-names = "default";
51 pinctrl-0 = <&pinctrl_mmc0_clk_cmd_dat0 &pinctrl_mmc0_dat1_3 &pinctrl_mmc0_cd>;
52 cd-gpios = <&pioC 26 GPIO_ACTIVE_LOW>;
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/linux/Documentation/devicetree/bindings/sound/
H A Ddavinci-mcasp-audio.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/sound/davinci-mcasp-audio.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jayesh Choudhary <j-choudhary@ti.com>
15 - ti,dm646x-mcasp-audio
16 - ti,da830-mcasp-audio
17 - ti,am33xx-mcasp-audio
18 - ti,dra7-mcasp-audio
19 - ti,omap4-mcasp-audio
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H A Dfsl,ssi.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Shengjiu Wang <shengjiu.wang@nxp.com>
13 Notes on fsl,playback-dma and fsl,capture-dma
14 On SOCs that have an SSI, specific DMA channels are hard-wired for playback
15 and capture. On the MPC8610, for example, SSI1 must use DMA channel 0 for
16 playback and DMA channel 1 for capture. SSI2 must use DMA channel 2 for
17 playback and DMA channel 3 for capture. The developer can choose which
18 DMA controller to use, but the channels themselves are hard-wired. The
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H A Drockchip,i2s-tdm.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/sound/rockchip,i2s-tdm.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
15 - Nicolas Frattaroli <frattaroli.nicolas@gmail.com>
18 - $ref: dai-common.yaml#
23 - rockchip,px30-i2s-tdm
24 - rockchip,rk1808-i2s-tdm
25 - rockchip,rk3308-i2s-tdm
26 - rockchip,rk3568-i2s-tdm
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H A Dbrcm,bcm2835-i2s.txt4 - compatible: "brcm,bcm2835-i2s"
5 - reg: Should contain PCM registers location and length.
6 - clocks: the (PCM) clock to use
7 - dmas: List of DMA controller phandle and DMA request line ordered pairs.
8 - dma-names: Identifier string for each DMA request line in the dmas property.
11 One of the DMA channels will be responsible for transmission (should be
12 named "tx") and one for reception (should be named "rx").
17 compatible = "brcm,bcm2835-i2s";
21 dmas = <&dma 2>,
22 <&dma 3>;
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/linux/Documentation/networking/device_drivers/ethernet/stmicro/
H A Dstmmac.rst1 .. SPDX-License-Identifier: GPL-2.0+
13 - In This Release
14 - Feature List
15 - Kernel Configuration
16 - Command Line Parameters
17 - Driver Information and Notes
18 - Debug Information
19 - Support
33 (and older) and DesignWare(R) Cores Ethernet Quality-of-Service version 4.0
35 DesignWare(R) Cores XGMAC - 10G Ethernet MAC and DesignWare(R) Cores
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/linux/drivers/mailbox/
H A Dbcm-pdc-mailbox.c1 // SPDX-License-Identifier: GPL-2.0-only
9 * offload engines. For example, the PDC driver works with both SPU-M and SPU2
24 * an rx interrupt indicates a response is ready, the PDC driver processes numd
25 * descriptors from the tx and rx ring, thus processing one response at a time.
41 #include <linux/mailbox/brcm-message.h>
43 #include <linux/dma-direction.h>
44 #include <linux/dma-mapping.h>
52 /* # entries in PDC dma ring */
73 #define PREVTXD(i, max_mask) TXD((i) - 1, (max_mask))
75 #define PREVRXD(i, max_mask) RXD((i) - 1, (max_mask))
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/linux/drivers/spi/
H A Dspi-s3c64xx.c1 // SPDX-License-Identifier: GPL-2.0+
10 #include <linux/dma-mapping.h>
17 #include <linux/platform_data/spi-s3c64xx.h>
27 /* Registers and bit-fields */
112 #define FIFO_LVL_MASK(i) ((i)->port_conf->fifo_lvl_mask[i->port_id])
114 (1 << (i)->port_conf->tx_st_done)) ? 1 : 0)
115 #define TX_FIFO_LVL(v, sdd) (((v) & (sdd)->tx_fifomask) >> \
116 __ffs((sdd)->tx_fifomask))
117 #define RX_FIFO_LVL(v, sdd) (((v) & (sdd)->rx_fifomask) >> \
118 __ffs((sdd)->rx_fifomask))
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/linux/Documentation/devicetree/bindings/dma/
H A Dk3dma.txt1 * Hisilicon K3 DMA controller
3 See dma.txt first
6 - compatible: Must be one of
7 - "hisilicon,k3-dma-1.0"
8 - "hisilicon,hisi-pcm-asp-dma-1.0"
9 - reg: Should contain DMA registers location and length.
10 - interrupts: Should contain one interrupt shared by all channel
11 - #dma-cells: see dma.txt, should be 1, para number
12 - dma-channels: physical channels supported
13 - dma-requests: virtual channels supported, each virtual channel
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H A Dingenic,dma.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/dma/ingenic,dma.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Ingenic SoCs DMA Controller
10 - Paul Cercueil <paul@crapouillou.net>
13 - $ref: dma-controller.yaml#
18 - enum:
19 - ingenic,jz4740-dma
20 - ingenic,jz4725b-dma
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/linux/drivers/net/wireless/ath/ath5k/
H A Ddma.c2 * Copyright (c) 2004-2008 Reyk Floeter <reyk@openbsd.org>
3 * Copyright (c) 2006-2008 Nick Kossifidis <mickflemm@gmail.com>
5 * Permission to use, copy, modify, and distribute this software for any
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 * DMA and interrupt masking functions *
24 * DOC: DMA and interrupt masking functions
26 * Here we setup descriptor pointers (rxdp/txdp) start/stop dma engine and
44 * ath5k_hw_start_rx_dma() - Start DMA receive
55 * ath5k_hw_stop_rx_dma() - Stop DMA receive
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/linux/Documentation/devicetree/bindings/net/
H A Dxlnx,axi-ethernet.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/net/xlnx,axi-ethernet.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
13 segments of memory for buffering TX and RX, as well as the capability of
14 offloading TX/RX checksum calculation off the processor.
17 sent and received through means of an AXI DMA controller. This driver
18 includes the DMA driver code, so this driver is incompatible with AXI DMA
22 - Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
27 - xlnx,axi-ethernet-1.00.a
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H A Dsnps,dwc-qos-ethernet.txt13 - compatible: One of:
14 - "axis,artpec6-eqos", "snps,dwc-qos-ethernet-4.10"
15 Represents the IP core when integrated into the Axis ARTPEC-6 SoC.
16 - "nvidia,tegra186-eqos", "snps,dwc-qos-ethernet-4.10"
18 - "snps,dwc-qos-ethernet-4.10"
20 "axis,artpec6-eqos", "snps,dwc-qos-ethernet-4.10". It is supported to be
22 - reg: Address and length of the register set for the device
23 - clocks: Phandle and clock specifiers for each entry in clock-names, in the
24 same order. See ../clock/clock-bindings.txt.
25 - clock-names: May contain any/all of the following depending on the IP
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/linux/arch/arm/boot/dts/axis/
H A Dartpec6.dtsi2 * Device Tree Source for the Axis ARTPEC-6 SoC
4 * This file is dual-licensed: you can use it either under the terms
24 * restriction, including without limitation the rights to use,
39 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
43 #include <dt-bindings/interrupt-controller/arm-gic.h>
44 #include <dt-bindings/dma/nbpfaxi.h>
45 #include <dt-bindings/clock/axis,artpec6-clkctrl.h>
48 #address-cells = <1>;
49 #size-cells = <1>;
51 interrupt-parent = <&intc>;
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/linux/sound/soc/fsl/
H A Dfsl_ssi.c1 // SPDX-License-Identifier: GPL-2.0
7 // Copyright 2007-2010 Freescale Semiconductor, Inc.
9 // Some notes why imx-pcm-fiq is used instead of DMA on some boards:
16 // we receive in our (PCM-) data stream. The only chance we have is to
43 #include <linux/dma/imx-dma.h>
53 #include "imx-pcm.h"
55 /* Define RX and TX to index ssi->regvals array; Can be 0 or 1 only */
56 #define RX 0 macro
66 * (bit-endianness must match byte-endianness). Processors typically write
68 * written in. So if the host CPU is big-endian, then only big-endian
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/linux/Documentation/devicetree/bindings/soc/ti/
H A Dkeystone-navigator-dma.txt1 Keystone Navigator DMA Controller
3 This document explains the device tree bindings for the packet dma
4 on keystone devices. The Keystone Navigator DMA driver sets up the dma
8 CRYPTO Engines etc has its own instance of dma hardware. QMSS has also
9 an internal packet DMA module which is used as an infrastructure DMA
12 Navigator DMA cloud layout:
13 ------------------
15 ------------------
17 |-> DMA instance #0
19 |-> DMA instance #1
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/linux/drivers/net/wireless/intel/iwlwifi/
H A Diwl-fh.h1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
3 * Copyright (C) 2005-2014, 2018-2021, 2023-2024 Intel Corporation
4 * Copyright (C) 2015-2017 Intel Deutschland GmbH
12 #include "iwl-trans.h"
28 * Keep-Warm (KW) buffer base address.
31 * host DRAM powered on (via dummy accesses to DRAM) to maintain low-latency
33 * from going into a power-savings mode that would cause higher DRAM latency,
34 * and possible data over/under-runs, before all Tx/Rx is complete.
38 * automatically invokes keep-warm accesses when normal accesses might not
42 * 31-0: Keep-warm buffer physical base address [35:4], must be 4K aligned
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/linux/drivers/tty/serial/
H A Dmsm_serial.c1 // SPDX-License-Identifier: GPL-2.0
12 #include <linux/dma/qcom_adm.h>
13 #include <linux/dma-mapping.h>
169 } rx; member
198 writel_relaxed(val, port->membase + off); in msm_write()
204 return readl_relaxed(port->membase + off); in msm_read()
208 * Setup the MND registers to use the TCXO clock.
216 port->uartclk = 1843200; in msm_serial_set_mnd_regs_tcxo()
220 * Setup the MND registers to use the TCXO clock divided by 4.
228 port->uartclk = 1843200; in msm_serial_set_mnd_regs_tcxoby4()
[all …]
/linux/include/net/page_pool/
H A Dtypes.h1 /* SPDX-License-Identifier: GPL-2.0 */
6 #include <linux/dma-direction.h>
11 #define PP_FLAG_DMA_MAP BIT(0) /* Should page_pool do the DMA
16 * DMA-synced-for-device according to
19 * Please note DMA-sync-for-CPU is still
40 * use-case. The NAPI budget is 64 packets. After a NAPI poll the RX
44 * Keeping room for more objects, is due to XDP_DROP use-case. As
58 * struct page_pool_params - page pool parameters
63 * @dev: device, for DMA pre-mapping purposes
65 * @dma_dir: DMA mapping direction
[all …]
/linux/drivers/net/ethernet/amd/xgbe/
H A Dxgbe.h9 * Copyright (c) 2014-2016 Advanced Micro Devices, Inc.
36 * without restriction, including without limitation the rights to use,
50 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
53 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
59 * Copyright (c) 2014-2016 Advanced Micro Devices, Inc.
62 * Redistribution and use in source and binary forms, with or without
79 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
81 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
96 * without restriction, including without limitation the rights to use,
110 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
[all …]
/linux/drivers/net/ethernet/intel/ice/
H A Dice_txrx.c1 // SPDX-License-Identifier: GPL-2.0
27 * ice_prgm_fdir_fltr - Program a Flow Director filter
41 dma_addr_t dma; in ice_prgm_fdir_fltr() local
47 return -ENOENT; in ice_prgm_fdir_fltr()
48 tx_ring = vsi->tx_rings[0]; in ice_prgm_fdir_fltr()
49 if (!tx_ring || !tx_ring->desc) in ice_prgm_fdir_fltr()
50 return -ENOENT; in ice_prgm_fdir_fltr()
51 dev = tx_ring->dev; in ice_prgm_fdir_fltr()
54 for (i = ICE_FDIR_CLEAN_DELAY; ICE_DESC_UNUSED(tx_ring) < 2; i--) { in ice_prgm_fdir_fltr()
56 return -EAGAIN; in ice_prgm_fdir_fltr()
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