From b792985226cc581ea6eb2e3d997f543d703c90c9 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Fri, 10 Jan 2014 15:56:05 +0100 Subject: [PATCH] ARM: integrator: define clocks in the device trees This adds the clock definitions to the Integrator/CP and Integrator/AP device trees. Signed-off-by: Linus Walleij --- arch/arm/boot/dts/integratorap.dts | 35 ++++++++++ arch/arm/boot/dts/integratorcp.dts | 102 ++++++++++++++++++++++++++++- 2 files changed, 135 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/integratorap.dts b/arch/arm/boot/dts/integratorap.dts index e6be9315ff0a..b10e6351da53 100644 --- a/arch/arm/boot/dts/integratorap.dts +++ b/arch/arm/boot/dts/integratorap.dts @@ -18,6 +18,28 @@ chosen { bootargs = "root=/dev/ram0 console=ttyAM0,38400n8 earlyprintk"; }; + /* 24 MHz chrystal on the core module */ + xtal24mhz: xtal24mhz@24M { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <24000000>; + }; + + pclk: pclk@0 { + #clock-cells = <0>; + compatible = "fixed-factor-clock"; + clock-div = <1>; + clock-mult = <1>; + clocks = <&xtal24mhz>; + }; + + /* The UART clock is 14.74 MHz divided by an ICS525 */ + uartclk: uartclk@14.74M { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <14745600>; + }; + syscon { compatible = "arm,integrator-ap-syscon"; reg = <0x11000000 0x100>; @@ -28,14 +50,17 @@ syscon { timer0: timer@13000000 { compatible = "arm,integrator-timer"; + clocks = <&xtal24mhz>; }; timer1: timer@13000100 { compatible = "arm,integrator-timer"; + clocks = <&xtal24mhz>; }; timer2: timer@13000200 { compatible = "arm,integrator-timer"; + clocks = <&xtal24mhz>; }; pic: pic@14000000 { @@ -92,26 +117,36 @@ fpga { rtc: rtc@15000000 { compatible = "arm,pl030", "arm,primecell"; arm,primecell-periphid = <0x00041030>; + clocks = <&pclk>; + clock-names = "apb_pclk"; }; uart0: uart@16000000 { compatible = "arm,pl010", "arm,primecell"; arm,primecell-periphid = <0x00041010>; + clocks = <&uartclk>, <&pclk>; + clock-names = "uartclk", "apb_pclk"; }; uart1: uart@17000000 { compatible = "arm,pl010", "arm,primecell"; arm,primecell-periphid = <0x00041010>; + clocks = <&uartclk>, <&pclk>; + clock-names = "uartclk", "apb_pclk"; }; kmi0: kmi@18000000 { compatible = "arm,pl050", "arm,primecell"; arm,primecell-periphid = <0x00041050>; + clocks = <&xtal24mhz>, <&pclk>; + clock-names = "KMIREFCLK", "apb_pclk"; }; kmi1: kmi@19000000 { compatible = "arm,pl050", "arm,primecell"; arm,primecell-periphid = <0x00041050>; + clocks = <&xtal24mhz>, <&pclk>; + clock-names = "KMIREFCLK", "apb_pclk"; }; }; }; diff --git a/arch/arm/boot/dts/integratorcp.dts b/arch/arm/boot/dts/integratorcp.dts index a21c17de9a5e..d43f15b4f79a 100644 --- a/arch/arm/boot/dts/integratorcp.dts +++ b/arch/arm/boot/dts/integratorcp.dts @@ -13,25 +13,107 @@ chosen { bootargs = "root=/dev/ram0 console=ttyAMA0,38400n8 earlyprintk"; }; + /* + * The Integrator/CP overall clocking architecture can be found in + * ARM DUI 0184B page 7-28 "Integrator/CP922T system clocks" which + * appear to illustrate the layout used in most configurations. + */ + + /* The codec chrystal operates at 24.576 MHz */ + xtal_codec: xtal24.576@24.576M { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <24576000>; + }; + + /* The chrystal is divided by 2 by the codec for the AACI bit clock */ + aaci_bitclk: aaci_bitclk@12.288M { + #clock-cells = <0>; + compatible = "fixed-factor-clock"; + clock-div = <2>; + clock-mult = <1>; + clocks = <&xtal_codec>; + }; + + /* This is a 25MHz chrystal on the base board */ + xtal25mhz: xtal25mhz@25M { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <25000000>; + }; + + /* The UART clock is 14.74 MHz divided from 25MHz by an ICS525 */ + uartclk: uartclk@14.74M { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <14745600>; + }; + + /* Actually sysclk I think */ + pclk: pclk@0 { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <0>; + }; + + core-module@10000000 { + /* 24 MHz chrystal on the core module */ + xtal24mhz: xtal24mhz@24M { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <24000000>; + }; + + /* + * External oscillator on the core module, usually used + * to drive video circuitry. Driven from the 24MHz clock. + */ + auxosc: cm_aux_osc@25M { + #clock-cells = <0>; + compatible = "arm,integrator-cm-auxosc"; + clocks = <&xtal24mhz>; + }; + + /* The KMI clock is the 24 MHz oscillator divided to 8MHz */ + kmiclk: kmiclk@1M { + #clock-cells = <0>; + compatible = "fixed-factor-clock"; + clock-div = <3>; + clock-mult = <1>; + clocks = <&xtal24mhz>; + }; + + /* The timer clock is the 24 MHz oscillator divided to 1MHz */ + timclk: timclk@1M { + #clock-cells = <0>; + compatible = "fixed-factor-clock"; + clock-div = <24>; + clock-mult = <1>; + clocks = <&xtal24mhz>; + }; + }; + syscon { compatible = "arm,integrator-cp-syscon"; reg = <0xcb000000 0x100>; }; timer0: timer@13000000 { - /* TIMER0 runs @ 25MHz */ + /* TIMER0 runs directly on the 25MHz chrystal */ compatible = "arm,integrator-cp-timer"; - status = "disabled"; + clocks = <&xtal25mhz>; }; timer1: timer@13000100 { /* TIMER1 runs @ 1MHz */ compatible = "arm,integrator-cp-timer"; + clocks = <&timclk>; }; timer2: timer@13000200 { /* TIMER2 runs @ 1MHz */ compatible = "arm,integrator-cp-timer"; + clocks = <&timclk>; }; pic: pic@14000000 { @@ -74,22 +156,32 @@ fpga { */ rtc@15000000 { compatible = "arm,pl031", "arm,primecell"; + clocks = <&pclk>; + clock-names = "apb_pclk"; }; uart@16000000 { compatible = "arm,pl011", "arm,primecell"; + clocks = <&uartclk>, <&pclk>; + clock-names = "uartclk", "apb_pclk"; }; uart@17000000 { compatible = "arm,pl011", "arm,primecell"; + clocks = <&uartclk>, <&pclk>; + clock-names = "uartclk", "apb_pclk"; }; kmi@18000000 { compatible = "arm,pl050", "arm,primecell"; + clocks = <&kmiclk>, <&pclk>; + clock-names = "KMIREFCLK", "apb_pclk"; }; kmi@19000000 { compatible = "arm,pl050", "arm,primecell"; + clocks = <&kmiclk>, <&pclk>; + clock-names = "KMIREFCLK", "apb_pclk"; }; /* @@ -100,18 +192,24 @@ mmc@1c000000 { reg = <0x1c000000 0x1000>; interrupts = <23 24>; max-frequency = <515633>; + clocks = <&uartclk>, <&pclk>; + clock-names = "mclk", "apb_pclk"; }; aaci@1d000000 { compatible = "arm,pl041", "arm,primecell"; reg = <0x1d000000 0x1000>; interrupts = <25>; + clocks = <&pclk>; + clock-names = "apb_pclk"; }; clcd@c0000000 { compatible = "arm,pl110", "arm,primecell"; reg = <0xC0000000 0x1000>; interrupts = <22>; + clocks = <&auxosc>, <&pclk>; + clock-names = "clcd", "apb_pclk"; }; }; }; -- 2.45.2