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Diffstat (limited to 'arch/arm/mach-imx/clk-imx25.c')
-rw-r--r--arch/arm/mach-imx/clk-imx25.c47
1 files changed, 22 insertions, 25 deletions
diff --git a/arch/arm/mach-imx/clk-imx25.c b/arch/arm/mach-imx/clk-imx25.c
index ae578c096ad8..59c0c8558c6b 100644
--- 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;
@@ -91,9 +89,10 @@ 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)
{
- int i;
+ BUG_ON(!ccm_base);
clk[dummy] = imx_clk_fixed("dummy", 0);
clk[osc] = imx_clk_fixed("osc", osc_rate);
@@ -224,19 +223,13 @@ static int __init __mx25_clocks_init(unsigned long osc_rate)
/* CCM_CGCR2(19): reserved in datasheet, but used as wdt in FSL kernel */
clk[wdt_ipg] = imx_clk_gate("wdt_ipg", "ipg", ccm(CCM_CGCR2), 19);
- for (i = 0; i < ARRAY_SIZE(clk); i++)
- if (IS_ERR(clk[i]))
- pr_err("i.MX25 clk %d: register failed with %ld\n",
- i, PTR_ERR(clk[i]));
+ imx_check_clocks(clk, ARRAY_SIZE(clk));
clk_prepare_enable(clk[emi_ahb]);
/* Clock source for gpt must be derived from AHB */
clk_set_parent(clk[per5_sel], clk[ahb]);
- clk_register_clkdev(clk[ipg], "ipg", "imx-gpt.0");
- clk_register_clkdev(clk[gpt_ipg_per], "per", "imx-gpt.0");
-
/*
* Let's initially set up CLKO parent as ipg, since this configuration
* is used on some imx25 board designs to clock the audio codec.
@@ -248,8 +241,14 @@ 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");
/* i.mx25 has the i.mx21 type uart */
clk_register_clkdev(clk[uart1_ipg], "ipg", "imx21-uart.0");
clk_register_clkdev(clk[uart_ipg_per], "per", "imx21-uart.0");
@@ -314,29 +313,27 @@ 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);