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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 <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2014-01-10 15:56:05 +01:00
parent b28a960c42
commit b792985226
2 changed files with 135 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
arch/arm/boot/dts/integratorap.dts
View File

@ -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";
};
};
};

102
arch/arm/boot/dts/integratorcp.dts
View File

@ -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";
};
};
};