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authorChen-Yu Tsai <wens@csie.org>2016-01-31 04:20:58 +0300
committerMaxime Ripard <maxime.ripard@free-electrons.com>2016-02-04 15:03:04 +0300
commitc5dee34e5c124381d3c2c5052c1c891e914543b3 (patch)
tree26ea88437bd91e31f6ea0ee63fe0077dbecdc2d0 /arch/arm/boot/dts/sun8i-a83t.dtsi
parent6b279560dd38ac66f3e65fd586cef37f5c2ae624 (diff)
downloadlinux-c5dee34e5c124381d3c2c5052c1c891e914543b3.tar.xz
ARM: dts: sun8i-a83t: Correct low speed oscillator clocks
The A83T does not have a 32.768 kHz low speed oscillator, either as an external crystal or input. It has a 16 MHz RC-based (inaccurate) internal oscillator, which is then divided by 512 for a clock close to 32 kHz. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Vishnu Patekar <vishnupatekar0510@gmail.com> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Diffstat (limited to 'arch/arm/boot/dts/sun8i-a83t.dtsi')
-rw-r--r--arch/arm/boot/dts/sun8i-a83t.dtsi21
1 files changed, 18 insertions, 3 deletions
diff --git a/arch/arm/boot/dts/sun8i-a83t.dtsi b/arch/arm/boot/dts/sun8i-a83t.dtsi
index 8d27b6381257..d3473f81b12f 100644
--- a/arch/arm/boot/dts/sun8i-a83t.dtsi
+++ b/arch/arm/boot/dts/sun8i-a83t.dtsi
@@ -118,6 +118,7 @@
#size-cells = <1>;
ranges;
+ /* TODO: PRCM block has a mux for this. */
osc24M: osc24M_clk {
#clock-cells = <0>;
compatible = "fixed-clock";
@@ -125,11 +126,25 @@
clock-output-names = "osc24M";
};
- osc32k: osc32k_clk {
+ /*
+ * This is called "internal OSC" in some places.
+ * It is an internal RC-based oscillator.
+ * TODO: Its controls are in the PRCM block.
+ */
+ osc16M: osc16M_clk {
#clock-cells = <0>;
compatible = "fixed-clock";
- clock-frequency = <32768>;
- clock-output-names = "osc32k";
+ clock-frequency = <16000000>;
+ clock-output-names = "osc16M";
+ };
+
+ osc16Md512: osc16Md512_clk {
+ #clock-cells = <0>;
+ compatible = "fixed-factor-clock";
+ clock-div = <512>;
+ clock-mult = <1>;
+ clocks = <&osc16M>;
+ clock-output-names = "osc16M-d512";
};
};