[PATCH 04/15] dt-bindings: rtc: sun6i-rtc: Export internal RC oscillator
From: Maxime Ripard <hidden>
Date: 2018-11-28 10:33:19
Also in:
linux-clk, linux-devicetree, linux-rtc, lkml
On Wed, Nov 28, 2018 at 05:30:01PM +0800, Chen-Yu Tsai wrote:
quoted hunk ↗ jump to hunk
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 <redacted> --- 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
It seems to be required only for a few RTC though (H3, H5 and R40?) Maxime -- Maxime Ripard, Bootlin Embedded Linux and Kernel engineering https://bootlin.com -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 228 bytes Desc: not available URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20181128/7c1671a6/attachment-0001.sig>