Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1439524

[PATCH v5 7/7] ARM: dts: sun9i: Switch to the AC100 RTC clock outputs for osc32k

Show all headers | View raw

The 32.768 kHz clock inside the A80 SoC is fed from an external source,
typically the AC100 RTC module.

Make the osc32k placeholder a fixed-factor clock so board dts files can
specify its source.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
Changes since v4: none
Changes since v3: none
Changes since v2: none
Changes since v1: none
---
 arch/arm/boot/dts/sun9i-a80-cubieboard4.dts | 5 +++++
 arch/arm/boot/dts/sun9i-a80-optimus.dts     | 5 +++++
 arch/arm/boot/dts/sun9i-a80.dtsi            | 9 +++------
 3 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/arch/arm/boot/dts/sun9i-a80-cubieboard4.dts b/arch/arm/boot/dts/sun9i-a80-cubieboard4.dts
index cf2f4b72a841..04b014603659 100644
--- a/arch/arm/boot/dts/sun9i-a80-cubieboard4.dts
+++ b/arch/arm/boot/dts/sun9i-a80-cubieboard4.dts
@@ -103,6 +103,11 @@
 	allwinner,drive = <SUN4I_PINCTRL_40_MA>;
 };
 
+&osc32k {
+	/* osc32k input is from AC100 */
+	clocks = <&ac100_rtc 0>;
+};
+
 &pio {
 	led_pins_cubieboard4: led-pins@0 {
 		allwinner,pins = "PH6", "PH17";
diff --git a/arch/arm/boot/dts/sun9i-a80-optimus.dts b/arch/arm/boot/dts/sun9i-a80-optimus.dts
index e35c06c162a7..fd874ded890e 100644
--- a/arch/arm/boot/dts/sun9i-a80-optimus.dts
+++ b/arch/arm/boot/dts/sun9i-a80-optimus.dts
@@ -152,6 +152,11 @@
 	status = "okay";
 };
 
+&osc32k {
+	/* osc32k input is from AC100 */
+	clocks = <&ac100_rtc 0>;
+};
+
 &pio {
 	led_pins_optimus: led-pins@0 {
 		allwinner,pins = "PH0", "PH1";
diff --git a/arch/arm/boot/dts/sun9i-a80.dtsi b/arch/arm/boot/dts/sun9i-a80.dtsi
index f68b3242b33a..dd11115ec087 100644
--- a/arch/arm/boot/dts/sun9i-a80.dtsi
+++ b/arch/arm/boot/dts/sun9i-a80.dtsi
@@ -148,15 +148,12 @@
 
 		/*
 		 * The 32k clock is from an external source, normally the
-		 * AC100 codec/RTC chip. This clock is by default enabled
-		 * and clocked at 32768 Hz, from the oscillator connected
-		 * to the AC100. It is configurable, but no such driver or
-		 * bindings exist yet.
+		 * AC100 codec/RTC chip. This serves as a placeholder for
+		 * board dts files to specify the source.
 		 */
 		osc32k: osc32k_clk {
 			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <32768>;
+			compatible = "fixed-factor-clock";
 			clock-output-names = "osc32k";
 		};
 
-- 
2.8.1

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[PATCH v5 0/7] mfd: ac100: Add support for X-Powers AC100 audio codec / RTC combo IC Chen-Yu Tsai <wens@csie.org> - 2016-07-08 16:40 +0200
  [PATCH v5 4/7] rtc: ac100: Add clk output support Chen-Yu Tsai <wens@csie.org> - 2016-07-08 16:40 +0200
    Re: [PATCH v5 4/7] rtc: ac100: Add clk output support Alexandre Belloni <alexandre.belloni@free-electrons.com> - 2016-07-08 18:40 +0200
  [PATCH v5 6/7] ARM: dts: sun9i: cubieboard4: Add device node for AC100 Chen-Yu Tsai <wens@csie.org> - 2016-07-08 16:40 +0200
  [PATCH v5 5/7] ARM: dts: sun9i: a80-optimus: Add device node for AC100 Chen-Yu Tsai <wens@csie.org> - 2016-07-08 16:40 +0200
  [PATCH v5 1/7] mfd: ac100: Add device tree bindings for X-Powers AC100 codec/RTC combo IC Chen-Yu Tsai <wens@csie.org> - 2016-07-08 16:40 +0200
  [PATCH v5 3/7] rtc: ac100: Add RTC driver for X-Powers AC100 Chen-Yu Tsai <wens@csie.org> - 2016-07-08 16:40 +0200
    Re: [PATCH v5 3/7] rtc: ac100: Add RTC driver for X-Powers AC100 Alexandre Belloni <alexandre.belloni@free-electrons.com> - 2016-07-08 18:30 +0200
  [PATCH v5 7/7] ARM: dts: sun9i: Switch to the AC100 RTC clock outputs for osc32k Chen-Yu Tsai <wens@csie.org> - 2016-07-08 16:40 +0200
    Re: [PATCH v5 7/7] ARM: dts: sun9i: Switch to the AC100 RTC clock  outputs for osc32k Maxime Ripard <maxime.ripard@free-electrons.com> - 2016-07-11 09:00 +0200
      Re: [PATCH v5 7/7] ARM: dts: sun9i: Switch to the AC100 RTC clock  outputs for osc32k Chen-Yu Tsai <wens@csie.org> - 2016-07-12 04:10 +0200
  [PATCH v5 2/7] mfd: ac100: Add driver for X-Powers AC100 audio codec / RTC combo IC Chen-Yu Tsai <wens@csie.org> - 2016-07-08 16:40 +0200

csiph-web