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/linux-6.12.1/Documentation/devicetree/bindings/i2c/
Dbrcm,bcm2835-i2c.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/i2c/brcm,bcm2835-i2c.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Broadcom BCM2835 I2C controller
10 - Stephen Warren <swarren@wwwdotorg.org>
13 - $ref: /schemas/i2c/i2c-controller.yaml#
18 - enum:
19 - brcm,bcm2835-i2c
20 - items:
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/linux-6.12.1/arch/arm/boot/dts/broadcom/
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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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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Dbcm2711-rpi.dtsi1 // SPDX-License-Identifier: GPL-2.0
2 #include "bcm2835-rpi.dtsi"
4 #include <dt-bindings/power/raspberrypi-power.h>
5 #include <dt-bindings/reset/raspberrypi,firmware-reset.h>
21 i2c0mux: i2c-mux0 {
22 compatible = "i2c-mux-pinctrl";
23 #address-cells = <1>;
24 #size-cells = <0>;
26 i2c-parent = <&i2c0>;
28 pinctrl-names = "i2c0", "i2c0-vc";
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/linux-6.12.1/Documentation/devicetree/bindings/clock/
Dbrcm,bcm2835-cprman.txt1 Broadcom BCM2835 CPRMAN clocks
4 Documentation/devicetree/bindings/clock/clock-bindings.txt
7 of the BCM2835. There is a level of PLLs deriving from an external
9 few PLLs, and a level of mostly-generic clock generators sourcing from
15 - compatible: should be one of the following,
16 "brcm,bcm2711-cprman"
17 "brcm,bcm2835-cprman"
18 - #clock-cells: Should be <1>. The permitted clock-specifier values can be
19 found in include/dt-bindings/clock/bcm2835.h
20 - reg: Specifies base physical address and size of the registers
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/linux-6.12.1/drivers/i2c/busses/
Di2c-bcm2835.c1 // SPDX-License-Identifier: GPL-2.0
3 * BCM2835 I2C controller driver
8 #include <linux/clk-provider.h>
11 #include <linux/i2c.h>
27 * 16-bit field for the number of SCL cycles to wait after rising SCL
76 writel(val, i2c_dev->regs + reg); in bcm2835_i2c_writel()
81 return readl(i2c_dev->regs + reg); in bcm2835_i2c_readl()
104 return -EINVAL; in clk_bcm2835_i2c_calc_divider()
116 if (divider == -EINVAL) in clk_bcm2835_i2c_set_rate()
117 return -EINVAL; in clk_bcm2835_i2c_set_rate()
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DMakefile1 # SPDX-License-Identifier: GPL-2.0
3 # Makefile for the i2c bus drivers.
7 obj-$(CONFIG_I2C_SCMI) += i2c-scmi.o
9 # Auxiliary I2C/SMBus modules
10 obj-$(CONFIG_I2C_CCGX_UCSI) += i2c-ccgx-ucsi.o
13 obj-$(CONFIG_I2C_ALI1535) += i2c-ali1535.o
14 obj-$(CONFIG_I2C_ALI1563) += i2c-ali1563.o
15 obj-$(CONFIG_I2C_ALI15X3) += i2c-ali15x3.o
16 obj-$(CONFIG_I2C_AMD756) += i2c-amd756.o
17 obj-$(CONFIG_I2C_AMD756_S4882) += i2c-amd756-s4882.o
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DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
6 menu "I2C Hardware Bus support"
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.
48 Acer Labs Inc. (ALI) M1514 and M1543 motherboard I2C interfaces.
51 will be called i2c-ali15x3.
58 756/766/768 mainboard I2C interfaces. The driver also includes
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/linux-6.12.1/Documentation/devicetree/bindings/display/
Dbrcm,bcm2835-hdmi.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/display/brcm,bcm2835-hdmi.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Eric Anholt <eric@anholt.net>
14 const: brcm,bcm2835-hdmi
18 - description: HDMI register range
19 - description: HD register range
26 - description: The pixel clock
27 - description: The HDMI state machine clock
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/linux-6.12.1/Documentation/hwmon/
Dsbrmi.rst1 .. SPDX-License-Identifier: GPL-2.0-or-later
8 * Sideband Remote Management Interface (SB-RMI) compliant AMD SoC
15 To instantiate this driver on an AMD CPU with SB-RMI
16 support, the i2c bus number would be the bus connected from the board
22 As mentioned in AMD's APML specification, The SB-RMI address is
27 Datasheet: The SB-RMI interface and protocol along with the Advanced
31 https://www.amd.com/en/support/tech-docs?keyword=55898
36 -----------
39 (SB-RMI) module from the external SMBus master that can be used to report socket
40 power on AMD platforms using mailbox command and resembles a typical 8-pin remote
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/linux-6.12.1/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-6.12.1/drivers/spi/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
13 dynamic device discovery; some are even write-only or read-only.
17 chips, analog to digital (and d-to-a) converters, and more.
44 If your system has an master-capable SPI controller (which
56 by providing a high-level interface to send memory-like commands.
66 This enables support for SPI-NAND mode on the Airoha NAND
68 is implemented as a SPI-MEM controller.
155 supports spi-mem interface.
174 tristate "BCM2835 SPI controller"
178 This selects a driver for the Broadcom BCM2835 SPI master.
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/linux-6.12.1/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-$(CONFIG_MFD_BCM590XX) += bcm590xx.o
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/linux-6.12.1/drivers/pwm/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
3 bool "Pulse-Width Modulation (PWM) Support"
5 Generic Pulse-Width Modulation (PWM) support.
7 In Pulse-Width Modulation, a variation of the width of pulses
48 will be called pwm-ab8500.
67 will be called pwm-apple.
77 will be called pwm-atmel.
85 (Atmel High-end LCD Controller). This PWM output is mainly used
89 will be called pwm-atmel-hlcdc.
102 will be called pwm-atmel-tcb.
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/linux-6.12.1/drivers/irqchip/
DMakefile1 # SPDX-License-Identifier: GPL-2.0
2 obj-$(CONFIG_IRQCHIP) += irqchip.o
4 obj-$(CONFIG_AL_FIC) += irq-al-fic.o
5 obj-$(CONFIG_ALPINE_MSI) += irq-alpine-msi.o
6 obj-$(CONFIG_ATH79) += irq-ath79-cpu.o
7 obj-$(CONFIG_ATH79) += irq-ath79-misc.o
8 obj-$(CONFIG_ARCH_BCM2835) += irq-bcm2835.o
9 obj-$(CONFIG_ARCH_BCM2835) += irq-bcm2836.o
10 obj-$(CONFIG_ARCH_ACTIONS) += irq-owl-sirq.o
11 obj-$(CONFIG_DAVINCI_CP_INTC) += irq-davinci-cp-intc.o
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/linux-6.12.1/drivers/watchdog/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
16 on-line as fast as possible after a lock-up. There's both a watchdog
21 <file:Documentation/watchdog/watchdog-api.rst> in the kernel source.
51 bool "Update boot-enabled watchdog until userspace takes over"
77 bool "Enable watchdog hrtimer-based pretimeouts"
198 tristate "ChromeOS EC-based watchdog"
234 depends on I2C
244 depends on I2C
252 tristate "Watchdog device controlled through GPIO-line"
257 controlled through GPIO-line.
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/linux-6.12.1/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-6.12.1/
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-scsi@vger.kernel.org
88 F: drivers/scsi/3w-*
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/linux-6.12.1/drivers/gpu/drm/vc4/
Dvc4_hdmi.c1 // SPDX-License-Identifier: GPL-2.0-only
12 * The HDMI core has a state machine and a PHY. On BCM2835, most of
21 * and transfers them over an internal MAI (multi-channel audio
45 #include <linux/i2c.h>
52 #include <sound/hdmi-codec.h>
116 struct drm_display_info *display = &vc4_hdmi->connector.display_info; in vc4_hdmi_supports_scrambling()
118 lockdep_assert_held(&vc4_hdmi->mutex); in vc4_hdmi_supports_scrambling()
120 if (!display->is_hdmi) in vc4_hdmi_supports_scrambling()
123 if (!display->hdmi.scdc.supported || in vc4_hdmi_supports_scrambling()
124 !display->hdmi.scdc.scrambling.supported) in vc4_hdmi_supports_scrambling()
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