mirror of
https://github.com/torvalds/linux.git
synced 2024-12-26 21:02:19 +00:00
04767b9fc2
Add the binding documentation for rtc-sh which is an RTC for SuperH and RZ/A SoCs. Signed-off-by: Chris Brandt <chris.brandt@renesas.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
29 lines
1.1 KiB
Plaintext
29 lines
1.1 KiB
Plaintext
* Real Time Clock for Renesas SH and ARM SoCs
|
|
|
|
Required properties:
|
|
- compatible: Should be "renesas,r7s72100-rtc" and "renesas,sh-rtc" as a
|
|
fallback.
|
|
- reg: physical base address and length of memory mapped region.
|
|
- interrupts: 3 interrupts for alarm, period, and carry.
|
|
- interrupt-names: The interrupts should be labeled as "alarm", "period", and
|
|
"carry".
|
|
- clocks: The functional clock source for the RTC controller must be listed
|
|
first (if exists). Additionally, potential clock counting sources are to be
|
|
listed.
|
|
- clock-names: The functional clock must be labeled as "fck". Other clocks
|
|
may be named in accordance to the SoC hardware manuals.
|
|
|
|
|
|
Example:
|
|
rtc: rtc@fcff1000 {
|
|
compatible = "renesas,r7s72100-rtc", "renesas,sh-rtc";
|
|
reg = <0xfcff1000 0x2e>;
|
|
interrupts = <GIC_SPI 276 IRQ_TYPE_EDGE_RISING
|
|
GIC_SPI 277 IRQ_TYPE_EDGE_RISING
|
|
GIC_SPI 278 IRQ_TYPE_EDGE_RISING>;
|
|
interrupt-names = "alarm", "period", "carry";
|
|
clocks = <&mstp6_clks R7S72100_CLK_RTC>, <&rtc_x1_clk>,
|
|
<&rtc_x3_clk>, <&extal_clk>;
|
|
clock-names = "fck", "rtc_x1", "rtc_x3", "extal";
|
|
};
|