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ARM: nomadik: register clocksource from device tree

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This switches the Nomadik platform to also registering its
clocksource from the device tree, removing unused support
code as we go along.

Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2013-04-16 23:44:31 +02:00
parent 6e2b07a172
commit 7690fbb293
4 changed files with 12 additions and 21 deletions
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11
arch/arm/boot/dts/ste-nomadik-stn8815.dtsi
View file

@ -21,18 +21,23 @@
cache-level = <2>;
};
mtu0 {
mtu0: mtu@101e2000 {
/* Nomadik system timer */
compatible = "st,nomadik-mtu";
reg = <0x101e2000 0x1000>;
interrupt-parent = <&vica>;
interrupts = <4>;
clocks = <&timclk>, <&pclk>;
clock-names = "timclk", "apb_pclk";
};
mtu1 {
mtu1: mtu@101e3000 {
/* Secondary timer */
reg = <0x101e3000 0x1000>;
interrupt-parent = <&vica>;
interrupts = <5>;
clocks = <&timclk>, <&pclk>;
clock-names = "timclk", "apb_pclk";
};
gpio0: gpio@101e4000 {
@ -101,7 +106,7 @@
pclk: pclk@0 {
#clock-cells = <0>;
compatible = "fixed-clock";
clock-frequency = <2400000>;
clock-frequency = <0>;
};
/*
* The 2.4 MHz TIMCLK reference clock is active at

1
arch/arm/mach-nomadik/Kconfig
View file

@ -6,6 +6,7 @@ config ARCH_NOMADIK
select ARM_VIC
select CLKSRC_NOMADIK_MTU
select CLKSRC_NOMADIK_MTU_SCHED_CLOCK
select CLKSRC_OF
select COMMON_CLK
select CPU_ARM926T
select GENERIC_CLOCKEVENTS

6
arch/arm/mach-nomadik/cpu-8815.c
View file

@ -29,7 +29,7 @@
#include <linux/platform_data/clk-nomadik.h>
#include <linux/platform_data/pinctrl-nomadik.h>
#include <linux/pinctrl/machine.h>
#include <linux/platform_data/clocksource-nomadik-mtu.h>
#include <linux/clocksource.h>
#include <linux/of_irq.h>
#include <linux/of_gpio.h>
#include <linux/of_address.h>
@ -172,7 +172,7 @@ static void __init cpu8815_timer_init_of(void)
/* We need this to be up now */
nomadik_clk_init();
mtu = of_find_node_by_path("/mtu0");
mtu = of_find_node_by_path("/mtu@101e2000");
if (!mtu)
return;
base = of_iomap(mtu, 0);
@ -188,7 +188,7 @@ static void __init cpu8815_timer_init_of(void)
src_cr |= SRC_CR_INIT_VAL;
writel(src_cr, base);
nmdk_timer_init(base, irq);
clocksource_of_init();
}
static struct fsmc_nand_timings cpu8815_nand_timings = {

15
drivers/clk/clk-nomadik.c
View file

@ -17,20 +17,5 @@ static const __initconst struct of_device_id cpu8815_clk_match[] = {
void __init nomadik_clk_init(void)
{
struct clk *clk;
clk = clk_register_fixed_rate(NULL, "apb_pclk", NULL, CLK_IS_ROOT, 0);
clk_register_clkdev(clk, "apb_pclk", NULL);
/*
* The 2.4 MHz TIMCLK reference clock is active at boot time, this is
* actually the MXTALCLK @19.2 MHz divided by 8. This clock is used
* by the timers and watchdog. See page 105 ff.
*/
clk = clk_register_fixed_rate(NULL, "TIMCLK", NULL, CLK_IS_ROOT,
2400000);
clk_register_clkdev(clk, NULL, "mtu0");
clk_register_clkdev(clk, NULL, "mtu1");
of_clk_init(cpu8815_clk_match);
}