From f87ccd2edcdbe86ffb7cf7286e1c7aa84d5e5af9 Mon Sep 17 00:00:00 2001 From: Gerhard Sittig Date: Sat, 30 Nov 2013 23:51:23 +0100 Subject: [PATCH] dts: mpc512x: add clock related device tree specs this addresses the clock driver aka provider's side of clocks - introduce a 'clocks' subtree with an 'osc' node for the crystal or oscillator SoC input (fixed frequency) - the 'clock@f00' clock-control-module node references the 'osc' for its input, and is another provider for all the clocks which the CCM component manages - prepare for future references to clocks from peripheral nodes by means of the <&clks ID> syntax and symbolic ID names which a header file provides - provide default values with 33MHz oscillator frequency in the common include (the 66MHz IPS bus already was there), and add override values for the ifm AC14xx board which deviates from the reference design (25MHz xtal, 80MHz IPS bus) Cc: Rob Herring Cc: Pawel Moll Cc: Mark Rutland Cc: Stephen Warren Cc: Ian Campbell Cc: linux-arm-kernel@lists.infradead.org Cc: devicetree@vger.kernel.org Reviewed-by: Mike Turquette Signed-off-by: Gerhard Sittig Signed-off-by: Anatolij Gustschin --- arch/powerpc/boot/dts/ac14xx.dts | 7 +++++++ arch/powerpc/boot/dts/mpc5121.dtsi | 18 +++++++++++++++++- 2 files changed, 24 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/boot/dts/ac14xx.dts b/arch/powerpc/boot/dts/ac14xx.dts index a543c4088cba..a1b883730b31 100644 --- a/arch/powerpc/boot/dts/ac14xx.dts +++ b/arch/powerpc/boot/dts/ac14xx.dts @@ -139,7 +139,14 @@ }; }; + clocks { + osc { + clock-frequency = <25000000>; + }; + }; + soc@80000000 { + bus-frequency = <80000000>; /* 80 MHz ips bus */ clock@f00 { compatible = "fsl,mpc5121rev2-clock", "fsl,mpc5121-clock"; diff --git a/arch/powerpc/boot/dts/mpc5121.dtsi b/arch/powerpc/boot/dts/mpc5121.dtsi index 2d7cb04ac962..1d533e083e3c 100644 --- a/arch/powerpc/boot/dts/mpc5121.dtsi +++ b/arch/powerpc/boot/dts/mpc5121.dtsi @@ -9,6 +9,8 @@ * option) any later version. */ +#include + /dts-v1/; / { @@ -73,6 +75,17 @@ ranges = <0x0 0x0 0xfc000000 0x04000000>; }; + clocks { + #address-cells = <1>; + #size-cells = <0>; + + osc: osc { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <33000000>; + }; + }; + soc@80000000 { compatible = "fsl,mpc5121-immr"; #address-cells = <1>; @@ -117,9 +130,12 @@ }; /* Clock control */ - clock@f00 { + clks: clock@f00 { compatible = "fsl,mpc5121-clock"; reg = <0xf00 0x100>; + #clock-cells = <1>; + clocks = <&osc>; + clock-names = "osc"; }; /* Power Management Controller */ -- 2.34.1