ARM: i.MX25 clk: Use of_clk_init() for DT case

Replace .init_time() hook with of_clk_init() for DT targets.

Based on:
  d4347ee ARM: i.MX27 clk: Use of_clk_init() for DT case

Signed-off-by: Denis Carikli <denis@eukrea.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>

diff --git a/arch/arm/mach-imx/clk-imx25.c b/arch/arm/mach-imx/clk-imx25.c
index e759a6d..cab34c3 100644 (file)
--- a/arch/arm/mach-imx/clk-imx25.c
+++ b/arch/arm/mach-imx/clk-imx25.c
@@ -32,8 +32,6 @@
 #include "hardware.h"
 #include "mx25.h"
 
-#define CRM_BASE       MX25_IO_ADDRESS(MX25_CRM_BASE_ADDR)
-
 #define CCM_MPCTL      0x00
 #define CCM_UPCTL      0x04
 #define CCM_CCTL       0x08
@@ -56,7 +54,7 @@
 #define CCM_LTR3       0x4c
 #define CCM_MCR                0x64
 
-#define ccm(x) (CRM_BASE + (x))
+#define ccm(x) (ccm_base + (x))
 
 static struct clk_onecell_data clk_data;
 
@@ -91,8 +89,11 @@ enum mx25_clks {
 
 static struct clk *clk[clk_max];
 
-static int __init __mx25_clocks_init(unsigned long osc_rate)
+static int __init __mx25_clocks_init(unsigned long osc_rate,
+                                    void __iomem *ccm_base)
 {
+       BUG_ON(!ccm_base);
+
        clk[dummy] = imx_clk_fixed("dummy", 0);
        clk[osc] = imx_clk_fixed("osc", osc_rate);
        clk[mpll] = imx_clk_pllv1("mpll", "osc", ccm(CCM_MPCTL));
@@ -240,7 +241,11 @@ static int __init __mx25_clocks_init(unsigned long osc_rate)
 
 int __init mx25_clocks_init(void)
 {
-       __mx25_clocks_init(24000000);
+       void __iomem *ccm;
+
+       ccm = ioremap(MX25_CRM_BASE_ADDR, SZ_16K);
+
+       __mx25_clocks_init(24000000, ccm);
 
        clk_register_clkdev(clk[gpt1_ipg], "ipg", "imx-gpt.0");
        clk_register_clkdev(clk[gpt_ipg_per], "per", "imx-gpt.0");
@@ -308,29 +313,29 @@ int __init mx25_clocks_init(void)
        return 0;
 }
 
-int __init mx25_clocks_init_dt(void)
+static void __init mx25_clocks_init_dt(struct device_node *np)
 {
-       struct device_node *np;
+       struct device_node *refnp;
        unsigned long osc_rate = 24000000;
+       void __iomem *ccm;
 
        /* retrieve the freqency of fixed clocks from device tree */
-       for_each_compatible_node(np, NULL, "fixed-clock") {
+       for_each_compatible_node(refnp, NULL, "fixed-clock") {
                u32 rate;
-               if (of_property_read_u32(np, "clock-frequency", &rate))
+               if (of_property_read_u32(refnp, "clock-frequency", &rate))
                        continue;
 
-               if (of_device_is_compatible(np, "fsl,imx-osc"))
+               if (of_device_is_compatible(refnp, "fsl,imx-osc"))
                        osc_rate = rate;
        }
 
-       np = of_find_compatible_node(NULL, NULL, "fsl,imx25-ccm");
+       ccm = of_iomap(np, 0);
+       __mx25_clocks_init(osc_rate, ccm);
+
        clk_data.clks = clk;
        clk_data.clk_num = ARRAY_SIZE(clk);
        of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
 
-       __mx25_clocks_init(osc_rate);
-
        mxc_timer_init_dt(of_find_compatible_node(NULL, NULL, "fsl,imx25-gpt"));
-
-       return 0;
 }
+CLK_OF_DECLARE(imx25_ccm, "fsl,imx25-ccm", mx25_clocks_init_dt);

diff --git a/arch/arm/mach-imx/common.h b/arch/arm/mach-imx/common.h
index d205f36..e0632d1 100644 (file)
--- a/arch/arm/mach-imx/common.h
+++ b/arch/arm/mach-imx/common.h
@@ -55,7 +55,6 @@ int mx25_clocks_init(void);
 int mx27_clocks_init(unsigned long fref);
 int mx31_clocks_init(unsigned long fref);
 int mx35_clocks_init(void);
-int mx25_clocks_init_dt(void);
 int mx31_clocks_init_dt(void);
 struct platform_device *mxc_register_gpio(char *name, int id,
        resource_size_t iobase, resource_size_t iosize, int irq, int irq_high);

diff --git a/arch/arm/mach-imx/imx25-dt.c b/arch/arm/mach-imx/imx25-dt.c
index 42a65e0..cf8032b 100644 (file)
--- a/arch/arm/mach-imx/imx25-dt.c
+++ b/arch/arm/mach-imx/imx25-dt.c
@@ -29,16 +29,10 @@ static const char * const imx25_dt_board_compat[] __initconst = {
        NULL
 };
 
-static void __init imx25_timer_init(void)
-{
-       mx25_clocks_init_dt();
-}
-
 DT_MACHINE_START(IMX25_DT, "Freescale i.MX25 (Device Tree Support)")
        .map_io         = mx25_map_io,
        .init_early     = imx25_init_early,
        .init_irq       = mx25_init_irq,
-       .init_time      = imx25_timer_init,
        .init_machine   = imx25_dt_init,
        .dt_compat      = imx25_dt_board_compat,
        .restart        = mxc_restart,