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/Linux-v6.1/Documentation/devicetree/bindings/timer/
Dingenic,tcu.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 Documentation/mips/ingenic-tcu.rst.
14 - Paul Cercueil <paul@crapouillou.net>
21 - ingenic,jz4740-tcu
22 - ingenic,jz4725b-tcu
23 - ingenic,jz4760-tcu
24 - ingenic,jz4760b-tcu
25 - ingenic,jz4770-tcu
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/Linux-v6.1/drivers/watchdog/
Djz4740_wdt.c1 // SPDX-License-Identifier: GPL-2.0-or-later
4 * JZ4740 Watchdog driver
7 #include <linux/mfd/ingenic-tcu.h>
13 #include <linux/watchdog.h>
29 "Watchdog cannot be stopped once started (default="
35 "Watchdog heartbeat period in seconds from 1 to "
50 regmap_write(drvdata->map, TCU_REG_WDT_TCNT, 0); in jz4740_wdt_ping()
59 u16 timeout_value = (u16)(drvdata->clk_rate * new_timeout); in jz4740_wdt_set_timeout()
62 regmap_read(drvdata->map, TCU_REG_WDT_TCER, &tcer); in jz4740_wdt_set_timeout()
63 regmap_write(drvdata->map, TCU_REG_WDT_TCER, 0); in jz4740_wdt_set_timeout()
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DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
4 # Watchdog device configuration
7 menuconfig WATCHDOG config
8 bool "Watchdog Timer Support"
11 character special file /dev/watchdog with major number 10 and minor
12 number 130 using mknod ("man mknod"), you will get a watchdog, i.e.:
16 on-line as fast as possible after a lock-up. There's both a watchdog
18 reboot the machine) and a driver for hardware watchdog boards, which
21 <file:Documentation/watchdog/watchdog-api.rst> in the kernel source.
23 The watchdog is usually used together with the watchdog daemon
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/Linux-v6.1/arch/mips/boot/dts/ingenic/
Djz4740.dtsi1 // SPDX-License-Identifier: GPL-2.0
2 #include <dt-bindings/clock/ingenic,jz4740-cgu.h>
3 #include <dt-bindings/clock/ingenic,tcu.h>
6 #address-cells = <1>;
7 #size-cells = <1>;
8 compatible = "ingenic,jz4740";
11 #address-cells = <1>;
12 #size-cells = <0>;
16 compatible = "ingenic,xburst-mxu1.0";
20 clock-names = "cpu";
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Djz4725b.dtsi1 // SPDX-License-Identifier: GPL-2.0
2 #include <dt-bindings/clock/ingenic,jz4725b-cgu.h>
3 #include <dt-bindings/clock/ingenic,tcu.h>
6 #address-cells = <1>;
7 #size-cells = <1>;
11 #address-cells = <1>;
12 #size-cells = <0>;
16 compatible = "ingenic,xburst-mxu1.0";
20 clock-names = "cpu";
24 cpuintc: interrupt-controller {
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Djz4770.dtsi1 // SPDX-License-Identifier: GPL-2.0
2 #include <dt-bindings/clock/ingenic,jz4770-cgu.h>
3 #include <dt-bindings/clock/ingenic,tcu.h>
6 #address-cells = <1>;
7 #size-cells = <1>;
11 #address-cells = <1>;
12 #size-cells = <0>;
16 compatible = "ingenic,xburst-fpu1.0-mxu1.1";
20 clock-names = "cpu";
24 cpuintc: interrupt-controller {
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Dx1830.dtsi1 // SPDX-License-Identifier: GPL-2.0
2 #include <dt-bindings/clock/ingenic,tcu.h>
3 #include <dt-bindings/clock/ingenic,x1830-cgu.h>
4 #include <dt-bindings/dma/x1830-dma.h>
7 #address-cells = <1>;
8 #size-cells = <1>;
12 #address-cells = <1>;
13 #size-cells = <0>;
17 compatible = "ingenic,xburst-fpu2.0-mxu2.0";
21 clock-names = "cpu";
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Djz4780.dtsi1 // SPDX-License-Identifier: GPL-2.0
2 #include <dt-bindings/clock/ingenic,jz4780-cgu.h>
3 #include <dt-bindings/clock/ingenic,tcu.h>
4 #include <dt-bindings/dma/jz4780-dma.h>
7 #address-cells = <1>;
8 #size-cells = <1>;
12 #address-cells = <1>;
13 #size-cells = <0>;
17 compatible = "ingenic,xburst-fpu1.0-mxu1.1";
21 clock-names = "cpu";
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/Linux-v6.1/Documentation/mips/
Dingenic-tcu.rst1 .. SPDX-License-Identifier: GPL-2.0
7 The Timer/Counter Unit (TCU) in Ingenic JZ47xx SoCs is a multi-function
11 - JZ4725B, JZ4750, JZ4755 only have six TCU channels. The other SoCs all
14 - JZ4725B introduced a separate channel, called Operating System Timer
15 (OST). It is a 32-bit programmable timer. On JZ4760B and above, it is
16 64-bit.
18 - Each one of the TCU channels has its own clock, which can be reparented to three
21 - The watchdog and OST hardware blocks also feature a TCSR register with the same
23 - The TCU registers used to gate/ungate can also gate/ungate the watchdog and
26 - Each TCU channel works in one of two modes:
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/Linux-v6.1/Documentation/translations/zh_CN/mips/
Dingenic-tcu.rst1 .. SPDX-License-Identifier: GPL-2.0
3 .. include:: ../disclaimer-zh_CN.rst
5 :Original: Documentation/mips/ingenic-tcu.rst
11 .. _cn_ingenic-tcu:
20 - JZ4725B, JZ4750, JZ4755 只有６个TCU通道。其它SoC都有８个通道。
22 - JZ4725B引入了一个独立的通道，称为操作系统计时器(OST)。这是一个32位可
25 - 每个TCU通道都有自己的时钟源，可以通过 TCSR 寄存器设置通道的父级时钟
28 - 看门狗和OST硬件模块在它们的寄存器空间中也有相同形式的TCSR寄存器。
29 - 用于关闭/开启的 TCU 寄存器也可以关闭/开启看门狗和 OST 时钟。
31 - 每个TCU通道在两种模式的其中一种模式下运行：
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/Linux-v6.1/drivers/clk/ingenic/
Dtcu.c1 // SPDX-License-Identifier: GPL-2.0
8 #include <linux/clk-provider.h>
10 #include <linux/mfd/ingenic-tcu.h>
16 #include <dt-bindings/clock/ingenic,tcu.h>
18 /* 8 channels max + watchdog + OST */
22 #define pr_fmt(fmt) "ingenic-tcu-clk: " fmt
68 const struct ingenic_tcu_clk_info *info = tcu_clk->info; in ingenic_tcu_enable()
69 struct ingenic_tcu *tcu = tcu_clk->tcu; in ingenic_tcu_enable()
71 regmap_write(tcu->map, TCU_REG_TSCR, BIT(info->gate_bit)); in ingenic_tcu_enable()
79 const struct ingenic_tcu_clk_info *info = tcu_clk->info; in ingenic_tcu_disable()
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/Linux-v6.1/drivers/rtc/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
44 This clock should be battery-backed, so that it reads the correct
45 time when the system boots from a power-off state. Otherwise, your
141 once-per-second update interrupts, used for synchronization.
159 will be called rtc-test.
173 will be called rtc-88pm860x.
183 will be called rtc-88pm80x.
187 tristate "Abracon AB-RTCMC-32.768kHz-B5ZE-S3"
190 AB-RTCMC-32.768kHz-B5ZE-S3 I2C RTC chip.
193 will be called rtc-ab-b5ze-s3.
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/Linux-v6.1/
DMAINTAINERS9 -------------------------
30 ``diff -u`` to make the patch easy to merge. Be prepared to get your
40 See Documentation/process/coding-style.rst for guidance here.
46 See Documentation/process/submitting-patches.rst for details.
57 include a Signed-off-by: line. The current version of this
59 Documentation/process/submitting-patches.rst.
70 that the bug would present a short-term risk to other users if it
76 Documentation/admin-guide/security-bugs.rst for details.
81 ---------------------------------------------------
97 W: *Web-page* with status/info
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