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/kernel/linux/linux-5.10/Documentation/devicetree/bindings/gpio/
Dspear_spics.txt1 === ST Microelectronics SPEAr SPI CS Driver ===
17 * compatible: should be defined as "st,spear-spics-gpio"
18 * reg: mentioning address range of spics controller
19 * st-spics,peripcfg-reg: peripheral configuration register offset
20 * st-spics,sw-enable-bit: bit offset to enable sw control
21 * st-spics,cs-value-bit: bit offset to drive chipselect low or high
22 * st-spics,cs-enable-mask: chip select number bit mask
23 * st-spics,cs-enable-shift: chip select number program offset
24 * gpio-controller: Marks the device node as gpio controller
25 * #gpio-cells: should be 1 and will mention chip select number
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/kernel/linux/linux-5.10/drivers/gpio/
Dgpio-spear-spics.c4 * Copyright (C) 2012 ST Microelectronics
34 * struct spear_spics - represents spi chip select control
60 return -ENXIO; in spics_get_value()
65 struct spear_spics *spics = gpiochip_get_data(chip); in spics_set_value() local
69 tmp = readl_relaxed(spics->base + spics->perip_cfg); in spics_set_value()
70 if (spics->last_off != offset) { in spics_set_value()
71 spics->last_off = offset; in spics_set_value()
72 tmp &= ~(spics->cs_enable_mask << spics->cs_enable_shift); in spics_set_value()
73 tmp |= offset << spics->cs_enable_shift; in spics_set_value()
77 tmp &= ~(0x1 << spics->cs_value_bit); in spics_set_value()
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/kernel/linux/linux-5.10/arch/arm/boot/dts/
Dspear1340.dtsi1 // SPDX-License-Identifier: GPL-2.0-or-later
11 compatible = "st,spear1340";
15 spics: spics@e0700000{ label
16 compatible = "st,spear-spics-gpio";
18 st-spics,peripcfg-reg = <0x42c>;
19 st-spics,sw-enable-bit = <21>;
20 st-spics,cs-value-bit = <20>;
21 st-spics,cs-enable-mask = <3>;
22 st-spics,cs-enable-shift = <18>;
23 gpio-controller;
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Dspear1310.dtsi1 // SPDX-License-Identifier: GPL-2.0-or-later
11 compatible = "st,spear1310";
14 spics: spics@e0700000{ label
15 compatible = "st,spear-spics-gpio";
17 st-spics,peripcfg-reg = <0x3b0>;
18 st-spics,sw-enable-bit = <12>;
19 st-spics,cs-value-bit = <11>;
20 st-spics,cs-enable-mask = <3>;
21 st-spics,cs-enable-shift = <8>;
22 gpio-controller;
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Dspear1310-evb.dts1 // SPDX-License-Identifier: GPL-2.0-or-later
8 /dts-v1/;
12 model = "ST SPEAr1310 Evaluation Board";
13 compatible = "st,spear1310-evb", "st,spear1310";
14 #address-cells = <1>;
15 #size-cells = <1>;
23 pinctrl-names = "default";
24 pinctrl-0 = <&state_default>;
28 st,pins = "i2c0_grp";
29 st,function = "i2c0";
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/kernel/linux/linux-5.10/Documentation/devicetree/bindings/
Dvendor-prefixes.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/vendor-prefixes.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Rob Herring <robh@kernel.org>
19 "^(at25|devbus|dmacap|dsa|exynos|fsi[ab]|gpio-fan|gpio|gpmc|hdmi|i2c-gpio),.*": true
21 "^(pinctrl-single|#pinctrl-single|PowerPC),.*": true
22 "^(pl022|pxa-mmc|rcar_sound|rotary-encoder|s5m8767|sdhci),.*": true
23 "^(simple-audio-card|st-plgpio|st-spics|ts),.*": true
38 "^active-semi,.*":
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