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/linux-6.14.4/Documentation/devicetree/bindings/spi/
Dbrcm,bcm2835-aux-spi.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/spi/brcm,bcm2835-aux-spi.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Broadcom BCM2835 Auxiliary SPI1/2 Controller
10 - Karan Sanghavi <[email protected]>
13 The BCM2835 contains two forms of SPI master controller. One is known simply
14 as SPI0, and the other as the "Universal SPI Master," which is part of the
19 - $ref: spi-controller.yaml#
24 - brcm,bcm2835-aux-spi
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Dbrcm,bcm2835-spi.yaml1 # SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/spi/brcm,bcm2835-spi.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Broadcom BCM2835 SPI0 controller
10 - Florian Fainelli <[email protected]>
11 - Kanak Shilledar <[email protected]>
12 - Stefan Wahren <[email protected]>
15 - $ref: spi-controller.yaml#
20 - brcm,bcm2835-spi
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Dspi-controller.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/spi/spi-controller.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: SPI Controller Common Properties
10 - Mark Brown <[email protected]>
13 SPI busses can be described with a node for the SPI controller device
14 and a set of child nodes for each SPI slave on the bus. The system SPI
15 controller may be described for use in SPI master mode or in SPI slave mode,
20 pattern: "^spi(@.*|-([0-9]|[1-9][0-9]+))?$"
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/linux-6.14.4/arch/arm/boot/dts/broadcom/
Dbcm283x.dtsi1 #include <dt-bindings/pinctrl/bcm2835.h>
2 #include <dt-bindings/clock/bcm2835.h>
3 #include <dt-bindings/clock/bcm2835-aux.h>
4 #include <dt-bindings/gpio/gpio.h>
5 #include <dt-bindings/interrupt-controller/irq.h>
6 #include <dt-bindings/soc/bcm2835-pm.h>
8 /* firmware-provided startup stubs live here, where the secondary CPUs are
14 * bcm2835 and bcm2836 implementations, leaving the CPU configuration to
15 * bcm2835.dtsi and bcm2836.dtsi.
19 compatible = "brcm,bcm2835";
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Dbcm2711.dtsi1 // SPDX-License-Identifier: GPL-2.0
4 #include <dt-bindings/interrupt-controller/arm-gic.h>
5 #include <dt-bindings/soc/bcm2835-pm.h>
10 #address-cells = <2>;
11 #size-cells = <1>;
13 interrupt-parent = <&gicv2>;
16 compatible = "brcm,bcm2711-vc5";
20 clk_27MHz: clk-27M {
21 #clock-cells = <0>;
22 compatible = "fixed-clock";
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Dbcm2835-common.dtsi1 // SPDX-License-Identifier: GPL-2.0
4 * bcm2835, bcm2836 and bcm2837 implementations.
8 interrupt-parent = <&intc>;
11 dma: dma-controller@7e007000 {
12 compatible = "brcm,bcm2835-dma";
25 /* dma channel 11-14 share one irq */
32 interrupt-names = "dma0",
47 "dma-shared-all";
48 #dma-cells = <1>;
49 brcm,dma-channel-mask = <0x7f35>;
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/linux-6.14.4/drivers/spi/
Dspi-bcm2835.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Driver for Broadcom BCM2835 SPI Controllers
10 * spi-ath79.c, Copyright (C) 2009-2011 Gabor Juhos <[email protected]>
11 * spi-atmel.c, Copyright (C) 2006 Atmel Corporation
19 #include <linux/dma-mapping.h>
34 #include <linux/spi/spi.h>
36 /* SPI register offsets */
76 #define DRV_NAME "spi-bcm2835"
85 * struct bcm2835_spi - BCM2835 SPI controller
88 * @cs_gpio: chip-select GPIO descriptor
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Dspi-bcm2835aux.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Driver for Broadcom BCM2835 auxiliary SPI Controllers
8 * Based on: spi-bcm2835.c
25 #include <linux/spi/spi.h>
32 "time in us to run a transfer in polling mode - if zero no polling is used\n");
35 * spi register defines
44 /* SPI register offsets */
112 snprintf(name, sizeof(name), "spi-bcm2835aux-%s", dname); in bcm2835aux_debugfs_create()
116 bs->debugfs_dir = dir; in bcm2835aux_debugfs_create()
120 &bs->count_transfer_polling); in bcm2835aux_debugfs_create()
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DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
3 # SPI driver configuration
5 menuconfig SPI config
6 bool "SPI support"
10 protocol. Chips that support SPI can have data transfer rates
12 controller and a chipselect. Most SPI slaves don't support
13 dynamic device discovery; some are even write-only or read-only.
15 SPI is widely used by microcontrollers to talk with sensors,
17 chips, analog to digital (and d-to-a) converters, and more.
18 MMC and SD cards can be accessed using SPI protocol; and for
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DMakefile1 # SPDX-License-Identifier: GPL-2.0
3 # Makefile for kernel SPI drivers.
6 ccflags-$(CONFIG_SPI_DEBUG) := -DDEBUG
8 # small core, mostly translating board-specific
10 obj-$(CONFIG_SPI_MASTER) += spi.o
11 obj-$(CONFIG_SPI_MEM) += spi-mem.o
12 obj-$(CONFIG_SPI_MUX) += spi-mux.o
13 obj-$(CONFIG_SPI_SPIDEV) += spidev.o
14 obj-$(CONFIG_SPI_LOOPBACK_TEST) += spi-loopback-test.o
16 # SPI master controller drivers (bus)
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/linux-6.14.4/drivers/tty/serial/8250/
D8250_bcm2835aux.c1 // SPDX-License-Identifier: GPL-2.0
10 * The bcm2835aux is capable of RTS auto flow-control, but this driver doesn't
38 * struct bcm2835aux_data - driver private data of BCM2835 auxiliary UART
51 if (!(up->port.rs485.flags & SER_RS485_RX_DURING_TX)) { in bcm2835aux_rs485_start_tx()
52 struct bcm2835aux_data *data = dev_get_drvdata(up->port.dev); in bcm2835aux_rs485_start_tx()
54 data->cntl &= ~BCM2835_AUX_UART_CNTL_RXEN; in bcm2835aux_rs485_start_tx()
55 serial_out(up, BCM2835_AUX_UART_CNTL, data->cntl); in bcm2835aux_rs485_start_tx()
60 * flags besides RTS. So no need for a read-modify-write. in bcm2835aux_rs485_start_tx()
62 if (up->port.rs485.flags & SER_RS485_RTS_ON_SEND) in bcm2835aux_rs485_start_tx()
70 if (up->port.rs485.flags & SER_RS485_RTS_AFTER_SEND) in bcm2835aux_rs485_stop_tx()
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/linux-6.14.4/drivers/pinctrl/bcm/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
21 tristate "Broadcom BCM2835 GPIO (with PINCONF) driver"
30 Say Y here to enable the Broadcom BCM2835 GPIO driver.
44 If compiled as module it will be called pinctrl-bcm4908.
119 The Broadcom iProc based SoCs- Cygnus, NS2, NSP and Stingray, use
124 the always-ON GPIO controller (CRMU/AON). All 3 GPIO controllers are
170 The Broadcom Northstar pins driver supports muxing multi-purpose pins
171 that can be used for various functions (e.g. SPI, I2C, UART) as well
/linux-6.14.4/drivers/mmc/host/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
94 implements a hardware byte swapper using a 32-bit datum.
106 support UHS2-capable devices.
133 disabled, it will steal the MMC cards away - rendering them
441 tristate "SDHCI support for the BCM2835 & iProc SD/MMC Controller"
450 If you have a BCM2835 or IPROC platform with SD or MMC devices,
505 MOXA provides one multi-functional card reader which can
506 be found on some embedded hardware such as UC-7112-LX.
557 of Alcor Micro PCI-E card reader
651 tristate "MMC/SD/SDIO over SPI"
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/linux-6.14.4/drivers/mfd/
DMakefile1 # SPDX-License-Identifier: GPL-2.0
6 88pm860x-objs := 88pm860x-core.o 88pm860x-i2c.o
7 obj-$(CONFIG_MFD_88PM860X) += 88pm860x.o
8 obj-$(CONFIG_MFD_88PM800) += 88pm800.o 88pm80x.o
9 obj-$(CONFIG_MFD_88PM805) += 88pm805.o 88pm80x.o
10 obj-$(CONFIG_MFD_88PM886_PMIC) += 88pm886.o
11 obj-$(CONFIG_MFD_ACT8945A) += act8945a.o
12 obj-$(CONFIG_MFD_SM501) += sm501.o
13 obj-$(CONFIG_ARCH_BCM2835) += bcm2835-pm.o
14 obj-$(CONFIG_MFD_BCM590XX) += bcm590xx.o
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/linux-6.14.4/drivers/dma/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
112 tristate "Analog Devices AXI-DMAC DMA support"
118 Enable support for the Analog Devices AXI-DMAC peripheral. This DMA
138 tristate "BCM2835 DMA engine support"
154 tristate "SA-11x0 DMA support"
159 Support the DMA engine found on Intel StrongARM SA-1100 and
160 SA-1110 SoCs. This DMA engine can only be used with on-chip
220 This module can be found on Freescale Vybrid and LS-1 SoCs.
263 Enable support for the IMG multi-threaded DMA controller (MDC).
283 tristate "Intel integrated DMA 64-bit support"
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/linux-6.14.4/drivers/i2c/busses/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
16 for Cypress CCGx Type-C controller. Individual bus drivers
25 controller is part of the 7101 device, which is an ACPI-compliant
29 will be called i2c-ali1535.
37 controller is part of the 7101 device, which is an ACPI-compliant
41 will be called i2c-ali1563.
51 will be called i2c-ali15x3.
63 will be called i2c-amd756.
73 will be called i2c-amd8111.
83 be called i2c-amd-mp2-pci and i2c-amd-mp2-plat.
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/linux-6.14.4/
DMAINTAINERS5 ---------------------------------------------------
21 W: *Web-page* with status/info
23 B: URI for where to file *bugs*. A web-page with detailed bug
28 patches to the given subsystem. This is either an in-tree file,
29 or a URI. See Documentation/maintainer/maintainer-entry-profile.rst
46 N: [^a-z]tegra all files whose path contains tegra
64 ----------------
83 3WARE SAS/SATA-RAID SCSI DRIVERS (3W-XXXX, 3W-9XXX, 3W-SAS)
85 L: linux-[email protected]
88 F: drivers/scsi/3w-*
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