Commit 2af9e6db authored by Sascha Hauer's avatar Sascha Hauer

ARM i.MX: Add common clock support for pllv1

The pllv1 is found on i.MX1, i.M25, i.MX27, i.MX31 and i.MX35.
Currently only reading the rate is supported.
Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
parent 6c7b0685
......@@ -11,6 +11,8 @@ obj-$(CONFIG_SOC_IMX35) += mm-imx3.o cpu-imx35.o clock-imx35.o ehci-imx35.o pm-i
obj-$(CONFIG_SOC_IMX5) += cpu-imx5.o mm-imx5.o clock-mx51-mx53.o ehci-imx5.o pm-imx5.o cpu_op-mx51.o
obj-$(CONFIG_COMMON_CLK) += clk-pllv1.o
# Support for CMOS sensor interface
obj-$(CONFIG_MX1_VIDEO) += mx1-camera-fiq.o mx1-camera-fiq-ksym.o
......
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/kernel.h>
#include <linux/err.h>
#include <mach/common.h>
#include <mach/hardware.h>
#include <mach/clock.h>
#include "clk.h"
/**
* pll v1
*
* @clk_hw clock source
* @parent the parent clock name
* @base base address of pll registers
*
* PLL clock version 1, found on i.MX1/21/25/27/31/35
*/
struct clk_pllv1 {
struct clk_hw hw;
void __iomem *base;
};
#define to_clk_pllv1(clk) (container_of(clk, struct clk_pllv1, clk))
static unsigned long clk_pllv1_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct clk_pllv1 *pll = to_clk_pllv1(hw);
return mxc_decode_pll(readl(pll->base), parent_rate);
}
struct clk_ops clk_pllv1_ops = {
.recalc_rate = clk_pllv1_recalc_rate,
};
struct clk *imx_clk_pllv1(const char *name, const char *parent,
void __iomem *base)
{
struct clk_pllv1 *pll;
struct clk *clk;
struct clk_init_data init;
pll = kmalloc(sizeof(*pll), GFP_KERNEL);
if (!pll)
return ERR_PTR(-ENOMEM);
pll->base = base;
init.name = name;
init.ops = &clk_pllv1_ops;
init.flags = 0;
init.parent_names = &parent;
init.num_parents = 1;
pll->hw.init = &init;
clk = clk_register(NULL, &pll->hw);
if (IS_ERR(clk))
kfree(pll);
return clk;
}
......@@ -5,7 +5,7 @@
#include <linux/clk-provider.h>
#include <mach/clock.h>
struct clk *imx_clk_pllv1(const char *name, char *parent,
struct clk *imx_clk_pllv1(const char *name, const char *parent,
void __iomem *base);
static inline struct clk *imx_clk_fixed(const char *name, int rate)
......
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