From: Chen-Yu Tsai <wens@csie.org>
To: Maxime Ripard <maxime.ripard@bootlin.com>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
Alessandro Zummo <a.zummo@towertech.it>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>, Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>
Cc: Chen-Yu Tsai <wens@csie.org>,
linux-arm-kernel@lists.infradead.org, linux-rtc@vger.kernel.org,
linux-clk@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com,
Corentin Labbe <clabbe.montjoie@gmail.com>
Subject: [PATCH v2 04/14] dt-bindings: rtc: sun6i-rtc: Export internal RC oscillator
Date: Mon, 3 Dec 2018 22:58:15 +0800 [thread overview]
Message-ID: <20181203145825.20511-5-wens@csie.org> (raw)
In-Reply-To: <20181203145825.20511-1-wens@csie.org>
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.
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com>
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 c7aed31210bc..6b732c41392b 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 up to two clock outputs. See below.
+- clock-output-names : names of up to 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 (A64/H3/H5 only)
Example:
--
2.20.0.rc1
WARNING: multiple messages have this Message-ID (diff)
From: Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>
To: Maxime Ripard
<maxime.ripard-LDxbnhwyfcJBDgjK7y7TUQ@public.gmane.org>,
Alexandre Belloni
<alexandre.belloni-LDxbnhwyfcJBDgjK7y7TUQ@public.gmane.org>,
Alessandro Zummo
<a.zummo-BfzFCNDTiLLj+vYz1yj4TQ@public.gmane.org>,
Michael Turquette
<mturquette-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>,
Stephen Boyd <sboyd-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>
Cc: Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-rtc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-clk-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org,
Corentin Labbe
<clabbe.montjoie-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: [PATCH v2 04/14] dt-bindings: rtc: sun6i-rtc: Export internal RC oscillator
Date: Mon, 3 Dec 2018 22:58:15 +0800 [thread overview]
Message-ID: <20181203145825.20511-5-wens@csie.org> (raw)
In-Reply-To: <20181203145825.20511-1-wens-jdAy2FN1RRM@public.gmane.org>
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.
Tested-by: Corentin Labbe <clabbe.montjoie-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Signed-off-by: Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.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 c7aed31210bc..6b732c41392b 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 up to two clock outputs. See below.
+- clock-output-names : names of up to 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 (A64/H3/H5 only)
Example:
--
2.20.0.rc1
WARNING: multiple messages have this Message-ID (diff)
From: Chen-Yu Tsai <wens@csie.org>
To: Maxime Ripard <maxime.ripard@bootlin.com>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
Alessandro Zummo <a.zummo@towertech.it>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>, Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>
Cc: linux-rtc@vger.kernel.org, devicetree@vger.kernel.org,
linux-sunxi@googlegroups.com, linux-kernel@vger.kernel.org,
Chen-Yu Tsai <wens@csie.org>,
Corentin Labbe <clabbe.montjoie@gmail.com>,
linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 04/14] dt-bindings: rtc: sun6i-rtc: Export internal RC oscillator
Date: Mon, 3 Dec 2018 22:58:15 +0800 [thread overview]
Message-ID: <20181203145825.20511-5-wens@csie.org> (raw)
In-Reply-To: <20181203145825.20511-1-wens@csie.org>
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.
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com>
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 c7aed31210bc..6b732c41392b 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 up to two clock outputs. See below.
+- clock-output-names : names of up to 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 (A64/H3/H5 only)
Example:
--
2.20.0.rc1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2018-12-03 14:59 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-03 14:58 [PATCH v2 00/14] rtc: sun6i: clock rework and pre-H6 SoC support Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` [PATCH v2 01/14] dt-bindings: rtc: sun6i-rtc: Rewrite clock outputs as a list Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` [PATCH v2 02/14] dt-bindings: rtc: sun6i-rtc: Add compatible strings for pre-H6 variants Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` [PATCH v2 03/14] dt-bindings: rtc: sun6i-rtc: Deprecate external clock output for A31 Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai [this message]
2018-12-03 14:58 ` [PATCH v2 04/14] dt-bindings: rtc: sun6i-rtc: Export internal RC oscillator Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-04 9:17 ` Maxime Ripard
2018-12-04 9:17 ` Maxime Ripard
2018-12-04 9:17 ` Maxime Ripard
2018-12-03 14:58 ` [PATCH v2 05/14] rtc: sun6i: Add default clock name for LOSC Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` [PATCH v2 06/14] rtc: sun6i: Add support for different variants Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` [PATCH v2 07/14] rtc: sun6i: Add support for all known pre-H6 variants Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` [PATCH v2 08/14] rtc: sun6i: Expose internal oscillator through device tree Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-04 9:17 ` Maxime Ripard
2018-12-04 9:17 ` Maxime Ripard
2018-12-04 9:17 ` Maxime Ripard
2018-12-03 14:58 ` [PATCH v2 09/14] ARM: dts: sun8i: a23/a33: Fix up RTC device node Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` [PATCH v2 10/14] ARM: dts: sunxi: h3/h5: Add clock accuracy for external oscillators Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` [PATCH v2 11/14] ARM: dts: sunxi: h3/h5: Fix up RTC device node and clock references Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` [PATCH v2 12/14] ARM: dts: sun8i: r40: Add clock accuracy for external oscillators Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` [PATCH v2 13/14] ARM: dts: sun8i: r40: Add RTC device node Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` [PATCH v2 14/14] arm64: dts: allwinner: a64: Fix up RTC device node and clock references Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-03 14:58 ` Chen-Yu Tsai
2018-12-06 5:49 ` [PATCH v2 00/14] rtc: sun6i: clock rework and pre-H6 SoC support Chen-Yu Tsai
2018-12-06 5:49 ` Chen-Yu Tsai
2018-12-06 5:49 ` Chen-Yu Tsai
2018-12-06 20:34 ` Alexandre Belloni
2018-12-06 20:34 ` Alexandre Belloni
2018-12-06 20:34 ` Alexandre Belloni
2018-12-07 2:25 ` Chen-Yu Tsai
2018-12-07 2:25 ` Chen-Yu Tsai
2018-12-07 2:25 ` Chen-Yu Tsai
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