From mboxrd@z Thu Jan 1 00:00:00 1970 From: vishnupatekar0510@gmail.com (Vishnu Patekar) Date: Sun, 31 Jan 2016 09:20:58 +0800 Subject: [PATCH 06/14] ARM: dts: sun8i-a83t: Correct low speed oscillator clocks In-Reply-To: <1454203266-4450-1-git-send-email-vishnupatekar0510@gmail.com> References: <1454203266-4450-1-git-send-email-vishnupatekar0510@gmail.com> Message-ID: <1454203266-4450-7-git-send-email-vishnupatekar0510@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Chen-Yu Tsai 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 --- arch/arm/boot/dts/sun8i-a83t.dtsi | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) diff --git a/arch/arm/boot/dts/sun8i-a83t.dtsi b/arch/arm/boot/dts/sun8i-a83t.dtsi index 8d27b63..45b725c 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 = "osc16Md512"; }; }; -- 1.9.1