[PATCH 04/15] dt-bindings: rtc: sun6i-rtc: Export internal RC oscillator

Chen-Yu Tsai
2018-11-28T09:30:01Z

Experiments showed that on at least the H3/H5/A64 the RTC's internal
oscillator also feeds the CPUS mux in the PRCM.

Export this clock through the device tree, instead of having to use
a dummy fixed-clock device node, for the PRCM to consume. This will
properly describe the relationship between the clocks.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
Documentation/devicetree/bindings/rtc/sun6i-rtc.txt | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/rtc/sun6i-rtc.txt b/Documentation/devicetree/bindings/rtc/sun6i-rtc.txt
index 78c4fb472eb7..1bd37faadecb 100644
--- a/Documentation/devicetree/bindings/rtc/sun6i-rtc.txt
+++ b/Documentation/devicetree/bindings/rtc/sun6i-rtc.txt
@@ -24,7 +24,7 @@ Required properties:

Required properties for new device trees
- clocks : phandle to the 32kHz external oscillator
-- clock-output-names : names of the two clock outputs. See below.
+- clock-output-names : names of the three clock outputs. See below.
- #clock-cells : must be equal to 1.

The RTC provides the following clocks at the given indices:
@@ -32,6 +32,7 @@ The RTC provides the following clocks at the given indices:
- 1: LOSC external output, known as X32KFOUT in the datasheet.
This clock is not available on the A31 and is deprecated for old
device trees still using the "allwinner,sun6i-a31-rtc" compatible.
+- 2: InternalOSC, or internal RC oscillator

Example:

--
2.20.0.rc1