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Searched refs:PIO (Results 1 – 25 of 72) sorted by relevance

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/Linux-v4.19/drivers/net/wireless/broadcom/b43legacy/
DKconfig74 bool "DMA + PIO"
78 Include both, Direct Memory Access (DMA) and Programmed I/O (PIO)
81 default DMA is used, otherwise PIO is used.
90 This reduces the size of the driver module, by omitting the PIO code.
93 bool "PIO (Programmed I/O) only"
96 Only include Programmed I/O (PIO).
98 Please note that PIO transfers are slow (compared to DMA).
100 Also note that not all devices of the b43legacy series support PIO.
102 You should use PIO only if DMA does not work for you.
/Linux-v4.19/Documentation/w1/slaves/
Dw1_ds28e045 * Maxim DS28E04-100 4096-Bit Addressable 1-Wire EEPROM with PIO
30 PIO Access
34 The current status of the PIO's is returned as an 8 bit value. Bit 0/1
35 represent the state of PIO_0/PIO_1. Bits 2..7 do not care. The PIO's are
Dw1_ds241315 The DS2413 chip has two open-drain outputs (PIO A and PIO B).
33 You can set the PIO pins using the "output" file.
47 When writing output, the master must repeat the PIO Output Data byte in
Dw1_ds240619 current state of each switch, with PIO A in bit 0 and PIO B in bit 1. The
21 work with. output is writable; bits 0 and 1 control PIO A and B,
/Linux-v4.19/Documentation/mips/
DAU1xxx_IDE.README49 timing parameters for PIO mode 0/1/2/3/4
57 CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA - enable the PIO+DBDMA mode
64 The AU1XXX IDE driver supported all PIO modes - PIO mode 0/1/2/3/4 - and all
67 To change the PIO mode use the program hdparm with option -p, e.g.
68 'hdparm -p0 [device]' for PIO mode 0. To enable the MWDMA mode use the option
/Linux-v4.19/Documentation/devicetree/bindings/pinctrl/
Dpinctrl-st.txt4 PIO multiplexing block. Each pin supports GPIO functionality (ALT0)
9 Pull Up (PU) are driven by the related PIO block.
11 ST pinctrl driver controls PIO multiplexing block and also interacts with
114 Every PIO is represented with 4-7 parameters depending on retime configuration.
117 -bank : Should be bank phandle to which this PIO belongs.
118 -offset : Offset in the PIO bank.
/Linux-v4.19/sound/soc/dwc/
DKconfig11 bool "PCM PIO extension for I2S driver"
15 a PCM and uses PIO to transfer data.
/Linux-v4.19/Documentation/spi/
Dpxa2xx8 - SSP PIO and SSP DMA data transfers.
102 fifo overruns (especially in PIO mode transfers). Good default values are
205 DMA and PIO I/O Support
207 The pxa2xx_spi driver supports both DMA and interrupt driven PIO message
208 transfers. The driver defaults to PIO mode and DMA transfers must be enabled
216 always use PIO transfers
220 use PIO transfers
229 use PIO transfer
/Linux-v4.19/drivers/net/ethernet/dlink/
DKconfig45 bool "Use MMIO instead of PIO"
49 Do NOT enable this by default, PIO (enabled when MMIO is disabled)
/Linux-v4.19/Documentation/devicetree/bindings/spi/
Dspi-orion.txt14 additionally to the normal indirect access (PIO) mode. The values
63 and its chip-selects that are used in the direct mode instead of PIO
66 are used in the default indirect (PIO) mode):
/Linux-v4.19/drivers/net/ethernet/via/
DKconfig34 bool "Use MMIO instead of PIO"
38 programmed I/O ports (PIO). Enabling this gives an improvement in
/Linux-v4.19/arch/mips/txx9/
DKconfig111 prompt "PIO[58:61]"
115 bool "PIO"
/Linux-v4.19/Documentation/networking/
Dz8530book.rst27 The PIO synchronous mode supports the most common Z8530 wiring. Here the
29 machine but not to the DMA subsystem. When running PIO the Z8530 has
43 gives better performance than pure PIO mode but is nowhere near as ideal
157 PIO mode the interface is programmed up to use interrupt driven PIO.
160 latencies caused by other drivers, notably IDE in PIO mode. Because the
173 To active PIO mode sending and receiving the ``z8530_sync_open`` is called.
177 The :c:func:`z8530_sync_close()` function shuts down a PIO
224 machines. The PIO mode makes no real assumptions.
/Linux-v4.19/drivers/net/fddi/
DKconfig31 prompt "Use MMIO instead of PIO" if PCI || EISA
37 (MMIO) as appropriate instead of programmed I/O ports (PIO).
/Linux-v4.19/Documentation/ABI/stable/
Dsysfs-driver-w1_ds28e044 Description: read/write the contents of the two PIO's of the DS28E04-100
/Linux-v4.19/Documentation/devicetree/bindings/ata/
Dpata-arasan.txt23 - arasan,broken-pio: if present, PIO mode is unusable
Dfaraday,ftide010.txt5 platform. The controller can do PIO modes 0 through 4, Multi-word DMA
/Linux-v4.19/drivers/infiniband/hw/hfi1/
Dtrace_dbg.h124 __hfi1_trace_def(PIO);
/Linux-v4.19/Documentation/devicetree/bindings/sound/
Drenesas,rsnd.txt263 But you can't use it if SSI was PIO mode.
274 ** PIO mode
276 You can use PIO mode which is for connection check by using.
277 Note: The system will drop non-SSI modules in PIO mode
396 - interrupts : Should contain SSI interrupt for PIO transfer
398 - pio-transfer : use PIO transfer mode
/Linux-v4.19/drivers/ide/
DKconfig259 This option includes support for setting/autotuning PIO modes and
357 IDE controllers. This allows the kernel to change PIO, DMA and UDMA
382 change PIO, DMA and UDMA speeds and to configure the chip to
391 This allows the kernel to change PIO, DMA and UDMA speeds
425 Include support for PIO tuning and virtual DMA on the Cyrix MediaGX
505 This allows the kernel to change PIO, DMA and UDMA speeds and to
566 This driver adds PIO/(U)DMA support for the ServerWorks OSB4/CSB5
574 This driver adds PIO & MultiMode DMA-2 support for the SGI IOC4
582 This driver adds PIO/(U)DMA support for the SI CMD680 and SII
618 The nice thing about it is that you can mix Ultra/DMA/PIO devices
[all …]
/Linux-v4.19/Documentation/devicetree/bindings/gpio/
Dgpio_atmel.txt1 * Atmel GPIO controller (PIO)
Dmicrochip,pic32-gpio.txt1 * Microchip PIC32 GPIO devices (PIO).
/Linux-v4.19/drivers/net/ethernet/realtek/
DKconfig58 bool "Use PIO instead of MMIO"
62 This instructs the driver to use programmed I/O ports (PIO) instead
/Linux-v4.19/Documentation/arm/Samsung-S3C24XX/
DEB2410ITX.txt49 changing speed of devices, PIO Mode 4 capable drives should be used.
/Linux-v4.19/Documentation/i2c/
DDMA-considerations9 DMA for it will likely add more overhead than a plain PIO transfer.
51 buffer could not be allocated. Fall back to PIO in that case.

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