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/kernel/linux/linux-5.10/drivers/i2c/muxes/
Di2c-arb-gpio-challenge.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * GPIO-based I2C Arbitration Using a Challenge & Response Mechanism
11 #include <linux/i2c.h>
12 #include <linux/i2c-mux.h>
19 * struct i2c_arbitrator_data - Driver data for I2C arbitrator
38 * i2c_arbitrator_select - claim the I2C bus
40 * Use the GPIO-based signalling protocol; return -EBUSY if we fail.
44 const struct i2c_arbitrator_data *arb = i2c_mux_priv(muxc); in i2c_arbitrator_select() local
48 stop_time = jiffies + usecs_to_jiffies(arb->wait_free_us) + 1; in i2c_arbitrator_select()
51 gpiod_set_value(arb->our_gpio, 1); in i2c_arbitrator_select()
[all …]
/kernel/linux/linux-6.6/drivers/i2c/muxes/
Di2c-arb-gpio-challenge.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * GPIO-based I2C Arbitration Using a Challenge & Response Mechanism
11 #include <linux/i2c.h>
12 #include <linux/i2c-mux.h>
19 * struct i2c_arbitrator_data - Driver data for I2C arbitrator
38 * i2c_arbitrator_select - claim the I2C bus
40 * Use the GPIO-based signalling protocol; return -EBUSY if we fail.
44 const struct i2c_arbitrator_data *arb = i2c_mux_priv(muxc); in i2c_arbitrator_select() local
48 stop_time = jiffies + usecs_to_jiffies(arb->wait_free_us) + 1; in i2c_arbitrator_select()
51 gpiod_set_value(arb->our_gpio, 1); in i2c_arbitrator_select()
[all …]
/kernel/linux/linux-5.10/Documentation/devicetree/bindings/i2c/
Di2c-arb.txt1 Common i2c arbitration bus properties.
3 - i2c-arb child node
5 Required properties for the i2c-arb child node:
6 - #address-cells = <1>;
7 - #size-cells = <0>;
9 Optional properties for i2c-arb child node:
10 - Child nodes conforming to i2c bus binding
16 An NXP pca9541 I2C bus master selector at address 0x74
20 arb@74 {
24 i2c-arb {
[all …]
Di2c-arb-gpio-challenge.txt1 GPIO-based I2C Arbitration Using a Challenge & Response Mechanism
4 the master of an I2C bus in a multimaster situation.
7 the standard I2C multi-master rules. Using GPIOs is generally useful in
12 * It is nonstandard (not using standard I2C multimaster)
14 problems (hard to tell if i2c issues were caused by one master, another, or
21 others can see. These are all active low with pull-ups enabled. We'll
24 - OUR_CLAIM: output from us signaling to other hosts that we want the bus
25 - THEIR_CLAIMS: output from others signaling that they want the bus
43 - compatible: i2c-arb-gpio-challenge
44 - our-claim-gpio: The GPIO that we use to claim the bus.
[all …]
Dnxp,pca9541.txt1 * NXP PCA9541 I2C bus master selector
5 - compatible: Must be "nxp,pca9541"
7 - reg: The I2C address of the device.
11 - I2C arbitration bus node. See i2c-arb.txt in this directory.
16 i2c-arbitrator@74 {
20 i2c-arb {
21 #address-cells = <1>;
22 #size-cells = <0>;
/kernel/linux/linux-6.6/Documentation/devicetree/bindings/i2c/
Di2c-arb-gpio-challenge.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/i2c/i2c-arb-gpio-challenge.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: GPIO-based I2C Arbitration Using a Challenge & Response Mechanism
10 - Doug Anderson <dianders@chromium.org>
11 - Peter Rosin <peda@axentia.se>
15 the master of an I2C bus in a multimaster situation.
18 standard I2C multi-master rules. Using GPIOs is generally useful in the case
23 * It is nonstandard (not using standard I2C multimaster)
[all …]
Dnxp,pca9541.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/i2c/nxp,pca9541.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: NXP PCA9541 I2C bus master selector
10 - Peter Rosin <peda@axentia.se>
19 i2c-arb:
21 $ref: /schemas/i2c/i2c-controller.yaml
24 I2C arbitration bus node.
27 - compatible
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/kernel/linux/linux-6.6/arch/arm/boot/dts/aspeed/
Daspeed-bmc-delta-ahe50dc.dts1 // SPDX-License-Identifier: GPL-2.0+
2 /dts-v1/;
4 #include "aspeed-g4.dtsi"
5 #include <dt-bindings/gpio/aspeed-gpio.h>
9 compatible = "regulator-output"; \
10 vout-supply = <&efuse##n>; \
19 shunt-resistor-micro-ohms = <675>; \
22 regulator-name = __stringify(efuse##num##-reg); \
28 model = "Delta Power AHE-50DC";
29 compatible = "delta,ahe50dc-bmc", "aspeed,ast2400";
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/kernel/linux/linux-5.10/arch/mips/boot/dts/brcm/
Dbcm7425.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 #address-cells = <1>;
4 #size-cells = <1>;
8 #address-cells = <1>;
9 #size-cells = <0>;
11 mips-hpt-frequency = <163125000>;
30 cpu_intc: interrupt-controller {
31 #address-cells = <0>;
32 compatible = "mti,cpu-interrupt-controller";
34 interrupt-controller;
[all …]
Dbcm7435.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 #address-cells = <1>;
4 #size-cells = <1>;
8 #address-cells = <1>;
9 #size-cells = <0>;
11 mips-hpt-frequency = <175625000>;
42 cpu_intc: interrupt-controller {
43 #address-cells = <0>;
44 compatible = "mti,cpu-interrupt-controller";
46 interrupt-controller;
[all …]
Dbcm7125.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 #address-cells = <1>;
4 #size-cells = <1>;
8 #address-cells = <1>;
9 #size-cells = <0>;
11 mips-hpt-frequency = <202500000>;
30 cpu_intc: interrupt-controller {
31 #address-cells = <0>;
32 compatible = "mti,cpu-interrupt-controller";
34 interrupt-controller;
[all …]
Dbcm7360.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 #address-cells = <1>;
4 #size-cells = <1>;
8 #address-cells = <1>;
9 #size-cells = <0>;
11 mips-hpt-frequency = <375000000>;
24 cpu_intc: interrupt-controller {
25 #address-cells = <0>;
26 compatible = "mti,cpu-interrupt-controller";
28 interrupt-controller;
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Dbcm7420.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 #address-cells = <1>;
4 #size-cells = <1>;
8 #address-cells = <1>;
9 #size-cells = <0>;
11 mips-hpt-frequency = <93750000>;
30 cpu_intc: interrupt-controller {
31 #address-cells = <0>;
32 compatible = "mti,cpu-interrupt-controller";
34 interrupt-controller;
[all …]
Dbcm7362.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 #address-cells = <1>;
4 #size-cells = <1>;
8 #address-cells = <1>;
9 #size-cells = <0>;
11 mips-hpt-frequency = <375000000>;
30 cpu_intc: interrupt-controller {
31 #address-cells = <0>;
32 compatible = "mti,cpu-interrupt-controller";
34 interrupt-controller;
[all …]
Dbcm7346.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 #address-cells = <1>;
4 #size-cells = <1>;
8 #address-cells = <1>;
9 #size-cells = <0>;
11 mips-hpt-frequency = <163125000>;
30 cpu_intc: interrupt-controller {
31 #address-cells = <0>;
32 compatible = "mti,cpu-interrupt-controller";
34 interrupt-controller;
[all …]
Dbcm7358.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 #address-cells = <1>;
4 #size-cells = <1>;
8 #address-cells = <1>;
9 #size-cells = <0>;
11 mips-hpt-frequency = <375000000>;
24 cpu_intc: interrupt-controller {
25 #address-cells = <0>;
26 compatible = "mti,cpu-interrupt-controller";
28 interrupt-controller;
[all …]
/kernel/linux/linux-6.6/arch/mips/boot/dts/brcm/
Dbcm7125.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 #address-cells = <1>;
4 #size-cells = <1>;
8 #address-cells = <1>;
9 #size-cells = <0>;
11 mips-hpt-frequency = <202500000>;
30 cpu_intc: interrupt-controller {
31 #address-cells = <0>;
32 compatible = "mti,cpu-interrupt-controller";
34 interrupt-controller;
[all …]
Dbcm7435.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 #address-cells = <1>;
4 #size-cells = <1>;
8 #address-cells = <1>;
9 #size-cells = <0>;
11 mips-hpt-frequency = <175625000>;
42 cpu_intc: interrupt-controller {
43 #address-cells = <0>;
44 compatible = "mti,cpu-interrupt-controller";
46 interrupt-controller;
[all …]
Dbcm7425.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 #address-cells = <1>;
4 #size-cells = <1>;
8 #address-cells = <1>;
9 #size-cells = <0>;
11 mips-hpt-frequency = <163125000>;
30 cpu_intc: interrupt-controller {
31 #address-cells = <0>;
32 compatible = "mti,cpu-interrupt-controller";
34 interrupt-controller;
[all …]
Dbcm7360.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 #address-cells = <1>;
4 #size-cells = <1>;
8 #address-cells = <1>;
9 #size-cells = <0>;
11 mips-hpt-frequency = <375000000>;
24 cpu_intc: interrupt-controller {
25 #address-cells = <0>;
26 compatible = "mti,cpu-interrupt-controller";
28 interrupt-controller;
[all …]
Dbcm7420.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 #address-cells = <1>;
4 #size-cells = <1>;
8 #address-cells = <1>;
9 #size-cells = <0>;
11 mips-hpt-frequency = <93750000>;
30 cpu_intc: interrupt-controller {
31 #address-cells = <0>;
32 compatible = "mti,cpu-interrupt-controller";
34 interrupt-controller;
[all …]
Dbcm7362.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 #address-cells = <1>;
4 #size-cells = <1>;
8 #address-cells = <1>;
9 #size-cells = <0>;
11 mips-hpt-frequency = <375000000>;
30 cpu_intc: interrupt-controller {
31 #address-cells = <0>;
32 compatible = "mti,cpu-interrupt-controller";
34 interrupt-controller;
[all …]
Dbcm7346.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 #address-cells = <1>;
4 #size-cells = <1>;
8 #address-cells = <1>;
9 #size-cells = <0>;
11 mips-hpt-frequency = <163125000>;
30 cpu_intc: interrupt-controller {
31 #address-cells = <0>;
32 compatible = "mti,cpu-interrupt-controller";
34 interrupt-controller;
[all …]
/kernel/linux/linux-6.6/arch/arm64/boot/dts/mediatek/
Dmt6797.dtsi1 // SPDX-License-Identifier: GPL-2.0
7 #include <dt-bindings/clock/mt6797-clk.h>
8 #include <dt-bindings/interrupt-controller/irq.h>
9 #include <dt-bindings/interrupt-controller/arm-gic.h>
10 #include <dt-bindings/pinctrl/mt6797-pinfunc.h>
14 interrupt-parent = <&sysirq>;
15 #address-cells = <2>;
16 #size-cells = <2>;
19 compatible = "arm,psci-0.2";
24 #address-cells = <1>;
[all …]
/kernel/linux/linux-5.10/arch/arm64/boot/dts/mediatek/
Dmt6797.dtsi1 // SPDX-License-Identifier: GPL-2.0
7 #include <dt-bindings/clock/mt6797-clk.h>
8 #include <dt-bindings/interrupt-controller/irq.h>
9 #include <dt-bindings/interrupt-controller/arm-gic.h>
10 #include <dt-bindings/pinctrl/mt6797-pinfunc.h>
14 interrupt-parent = <&sysirq>;
15 #address-cells = <2>;
16 #size-cells = <2>;
19 compatible = "arm,psci-0.2";
24 #address-cells = <1>;
[all …]

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