linux_dsm_epyc7002/Documentation/devicetree/bindings/rtc/s3c-rtc.txt
Javier Martinez Canillas 00c9329ebe rtc: s3c: Document in binding that only s3c6410 needs a src clk
The S3C binding doc says that the RTC and RTC source clocks are required
but the S3C driver supports different HW IP and only the s3c6410 needs a
source clock.

Fix the binding explaining that the source clock is only needed for the
s3c6410-rtc compatible controller.

Reported-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2016-03-29 00:17:31 +02:00

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* Samsung's S3C Real Time Clock controller
Required properties:
- compatible: should be one of the following.
* "samsung,s3c2410-rtc" - for controllers compatible with s3c2410 rtc.
* "samsung,s3c2416-rtc" - for controllers compatible with s3c2416 rtc.
* "samsung,s3c2443-rtc" - for controllers compatible with s3c2443 rtc.
* "samsung,s3c6410-rtc" - for controllers compatible with s3c6410 rtc.
* "samsung,exynos3250-rtc" - (deprecated) for controllers compatible with
exynos3250 rtc (use "samsung,s3c6410-rtc").
- reg: physical base address of the controller and length of memory mapped
region.
- interrupts: Two interrupt numbers to the cpu should be specified. First
interrupt number is the rtc alarm interrupt and second interrupt number
is the rtc tick interrupt. The number of cells representing a interrupt
depends on the parent interrupt controller.
- clocks: Must contain a list of phandle and clock specifier for the rtc
clock and in the case of a s3c6410 compatible controller, also
a source clock.
- clock-names: Must contain "rtc" and for a s3c6410 compatible controller,
a "rtc_src" sorted in the same order as the clocks property.
Example:
rtc@10070000 {
compatible = "samsung,s3c6410-rtc";
reg = <0x10070000 0x100>;
interrupts = <44 0 45 0>;
clocks = <&clock CLK_RTC>, <&s2mps11_osc S2MPS11_CLK_AP>;
clock-names = "rtc", "rtc_src";
};