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ARM: orion5x: switch to use the clock driver for DT platforms

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This commit moves the Orion5x platforms using the Device Tree to use
the recently introduced clock driver for Orion5x. To achieve that, it:

 * Adds the necessary DT description of the clock.

 * Selects ORION_CLK to enable the compilation of the clock driver.

 * Call of_clk_init() instead of the Orion5x-specific clock
   initialization function.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1398202002-28530-21-git-send-email-thomas.petazzoni@free-electrons.com
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
This commit is contained in:
Thomas Petazzoni 2014-04-22 23:26:24 +02:00 committed by Jason Cooper
parent 2864ed64ec
commit 98d4db263e
3 changed files with 9 additions and 3 deletions
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6
arch/arm/boot/dts/orion5x-mv88f5182.dtsi
View file

@ -15,6 +15,12 @@ soc {
compatible = "marvell,orion5x-88f5182-mbus", "simple-bus";
internal-regs {
core_clk: core-clocks@10030 {
compatible = "marvell,mv88f5182-core-clock";
reg = <0x10010 0x4>;
#clock-cells = <1>;
};
mbusc: mbus-controller@20000 {
compatible = "marvell,mbus-controller";
reg = <0x20000 0x100>, <0x1500 0x20>;

1
arch/arm/mach-orion5x/Kconfig
View file

@ -5,6 +5,7 @@ menu "Orion Implementations"
config ARCH_ORION5X_DT
bool "Marvell Orion5x Flattened Device Tree"
select USE_OF
select ORION_CLK
help
Say 'Y' here if you want your kernel to support the
Marvell Orion5x using flattened device tree.

5
arch/arm/mach-orion5x/board-dt.c
View file

@ -16,6 +16,7 @@
#include <linux/of_platform.h>
#include <linux/cpu.h>
#include <linux/mbus.h>
#include <linux/clk-provider.h>
#include <asm/system_misc.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
@ -43,6 +44,7 @@ static void orion5x_dt_init_early(void)
static void orion5x_dt_init_time(void)
{
orion5x_timer_init();
of_clk_init(NULL);
}
static void __init orion5x_dt_init(void)
@ -60,9 +62,6 @@ static void __init orion5x_dt_init(void)
*/
orion5x_setup_wins();
/* Setup root of clk tree */
clk_init();
/*
* Don't issue "Wait for Interrupt" instruction if we are
* running on D0 5281 silicon.