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/Linux-v6.1/Documentation/devicetree/bindings/mfd/
Datmel-gpbr.txt1 * Device tree bindings for Atmel GPBR (General Purpose Backup Registers)
3 The GPBR are a set of battery-backed registers.
7 "atmel,at91sam9260-gpbr", "syscon"
8 "microchip,sam9x60-gpbr", "syscon"
9 - reg: contains offset/length value of the GPBR memory
14 gpbr: gpbr@fffffd50 {
15 compatible = "atmel,at91sam9260-gpbr", "syscon";
/Linux-v6.1/Documentation/devicetree/bindings/rtc/
Datmel,at91sam9260-rtt.yaml42 - description: Phandle to the GPBR node.
43 - description: Offset within the GPBR block.
45 Should encode the GPBR register used to store the time base when the
46 RTT is used as an RTC. The first cell should point to the GPBR node
47 and the second one encodes the offset within the GPBR block (or in
48 other words, the GPBR register used to store the time base).
68 atmel,rtt-rtc-time-reg = <&gpbr 0x0>;
/Linux-v6.1/drivers/rtc/
Drtc-at91sam9.c42 * choose from, or a "real" RTC module. All systems have multiple GPBR
72 struct regmap *gpbr; member
90 regmap_read(rtc->gpbr, rtc->gpbr_offset, &val); in gpbr_readl()
97 regmap_write(rtc->gpbr, rtc->gpbr_offset, val); in gpbr_writel()
370 rtc->gpbr = syscon_node_to_regmap(args.np); in at91_rtc_probe()
372 if (IS_ERR(rtc->gpbr)) { in at91_rtc_probe()
373 dev_err(&pdev->dev, "failed to retrieve gpbr regmap, aborting.\n"); in at91_rtc_probe()
DKconfig1529 small coin cell battery) which keeps this block and the GPBR
/Linux-v6.1/arch/arm/boot/dts/
Dat91sam9260ek.dts121 atmel,rtt-rtc-time-reg = <&gpbr 0x0>;
129 gpbr: syscon@fffffd50 { label
Dat91sam9g20ek_common.dtsi135 atmel,rtt-rtc-time-reg = <&gpbr 0x0>;
143 gpbr: syscon@fffffd50 { label
Dat91sam9m10g45ek.dts223 atmel,rtt-rtc-time-reg = <&gpbr 0x0>;
227 gpbr: syscon@fffffd60 { label
Dsam9x60.dtsi710 gpbr: syscon@fffffe60 { label
711 compatible = "microchip,sam9x60-gpbr", "atmel,at91sam9260-gpbr", "syscon";
Dat91sam9261ek.dts182 atmel,rtt-rtc-time-reg = <&gpbr 0x0>;
Dat91sam9263ek.dts106 atmel,rtt-rtc-time-reg = <&gpbr 0x0>;
Dat91sam9rlek.dts216 atmel,rtt-rtc-time-reg = <&gpbr 0x0>;
Dat91-sam9x60ek.dts308 &gpbr {
653 atmel,rtt-rtc-time-reg = <&gpbr 0x0>;
Dat91sam9261.dtsi646 gpbr: syscon@fffffd50 { label
647 compatible = "atmel,at91sam9260-gpbr", "syscon";
Dsama7g5.dtsi234 gpbr: gpbr@e001d060 { label
235 compatible = "microchip,sama7g5-gpbr", "syscon";
Dat91sam9260.dtsi738 gpbr: syscon@fffffd50 { label
739 compatible = "atmel,at91sam9260-gpbr", "syscon";
Dat91sam9rl.dtsi817 gpbr: syscon@fffffd60 { label
818 compatible = "atmel,at91sam9260-gpbr", "syscon";
Dat91sam9263.dtsi753 gpbr: syscon@fffffd60 { label
754 compatible = "atmel,at91sam9260-gpbr", "syscon";
Dat91sam9g45.dtsi949 gpbr: syscon@fffffd60 { label
950 compatible = "atmel,at91sam9260-gpbr", "syscon";
Dat91-sama7g5ek.dts761 atmel,rtt-rtc-time-reg = <&gpbr 0x0>;
/Linux-v6.1/drivers/platform/x86/
Dsony-laptop.c663 SNC_HANDLE_NAMES(brightness_def_get, "GPBR");