Searched +full:quartz +full:- +full:load +full:- +full:femtofarads (Results 1 – 5 of 5) sorted by relevance
| /Linux-v5.10/Documentation/devicetree/bindings/rtc/ |
| D | nxp,pcf8523.txt | 4 - compatible: Should contain "nxp,pcf8523".
5 - reg: I2C address for chip.
8 - quartz-load-femtofarads: The capacitive load of the quartz(x-tal),
17 quartz-load-femtofarads = <7000>;
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| D | nxp,pcf85063.txt | 4 - compatible: Should one of contain:
9 - reg: I2C address for chip.
12 - quartz-load-femtofarads: The capacitive load of the quartz(x-tal),
21 quartz-load-femtofarads = <12500>;
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| D | rtc.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Alexandre Belloni <alexandre.belloni@bootlin.com>
18 pattern: "^rtc(@.*|-[0-9a-f])*$"
20 aux-voltage-chargeable:
29 quartz-load-femtofarads:
32 The capacitive load of the quartz(x-tal), expressed in femto
36 start-year:
42 trickle-diode-disable:
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| /Linux-v5.10/drivers/rtc/ |
| D | rtc-pcf8523.c | 1 // SPDX-License-Identifier: GPL-2.0-only
12 #define DRIVER_NAME "rtc-pcf8523"
20 #define REG_CONTROL3_PM_VDD (1 << 6) /* switch-over disabled */
23 #define REG_CONTROL3_BLF (1 << 2) /* battery low bit, read-only */
44 msgs[0].addr = client->addr; in pcf8523_read()
49 msgs[1].addr = client->addr; in pcf8523_read()
54 err = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); in pcf8523_read()
69 msg.addr = client->addr; in pcf8523_write()
74 err = i2c_transfer(client->adapter, &msg, 1); in pcf8523_write()
95 u32 load; in pcf8523_load_capacitance() local
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| D | rtc-pcf85063.c | 1 // SPDX-License-Identifier: GPL-2.0
7 * Maintainers: http://www.nslu2-linux.org/
12 #include <linux/clk-provider.h>
27 * PCF85063A -- Rev. 6 — 18 November 2015
28 * PCF85063TP -- Rev. 4 — 6 May 2015
30 * https://www.microcrystal.com/fileadmin/Media/Products/RTC/App.Manual/RV-8263-C7_App-Manual.pdf
31 * RV8263 -- Rev. 1.0 — January 2019
86 rc = regmap_bulk_read(pcf85063->regmap, PCF85063_REG_SC, regs, in pcf85063_rtc_read_time()
93 dev_warn(&pcf85063->rtc->dev, "Power loss detected, invalid time\n"); in pcf85063_rtc_read_time()
94 return -EINVAL; in pcf85063_rtc_read_time()
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