OMAP2/3 clock: combine OMAP2 & 3 boot-time MPU rate change code
The OMAP2 and OMAP3 boot-time MPU rate change code is almost
identical. Merge them into mach-omap2/clock.c, and add kerneldoc
documentation.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
diff --git a/arch/arm/mach-omap2/clock3xxx.c b/arch/arm/mach-omap2/clock3xxx.c
index d142457..a447c4d 100644
--- a/arch/arm/mach-omap2/clock3xxx.c
+++ b/arch/arm/mach-omap2/clock3xxx.c
@@ -18,12 +18,9 @@
#include <linux/kernel.h>
#include <linux/errno.h>
-#include <linux/delay.h>
#include <linux/clk.h>
#include <linux/io.h>
-#include <linux/err.h>
-#include <plat/cpu.h>
#include <plat/clock.h>
#include "clock.h"
@@ -83,63 +80,25 @@
/* Common clock code */
-/* REVISIT: Move this init stuff out into clock.c */
-
/*
- * Switch the MPU rate if specified on cmdline.
- * We cannot do this early until cmdline is parsed.
+ * Switch the MPU rate if specified on cmdline. We cannot do this
+ * early until cmdline is parsed. XXX This should be removed from the
+ * clock code and handled by the OPP layer code in the near future.
*/
static int __init omap3xxx_clk_arch_init(void)
{
- struct clk *osc_sys_ck, *dpll1_ck, *arm_fck, *core_ck;
- unsigned long osc_sys_rate;
- bool err = 0;
+ int ret;
if (!cpu_is_omap34xx())
return 0;
- if (!mpurate)
- return -EINVAL;
+ ret = omap2_clk_switch_mpurate_at_boot("dpll1_ck");
+ if (!ret)
+ omap2_clk_print_new_rates("osc_sys_ck", "arm_fck", "core_ck");
- /* XXX test these for success */
- dpll1_ck = clk_get(NULL, "dpll1_ck");
- if (WARN(IS_ERR(dpll1_ck), "Failed to get dpll1_ck.\n"))
- err = 1;
-
- arm_fck = clk_get(NULL, "arm_fck");
- if (WARN(IS_ERR(arm_fck), "Failed to get arm_fck.\n"))
- err = 1;
-
- core_ck = clk_get(NULL, "core_ck");
- if (WARN(IS_ERR(core_ck), "Failed to get core_ck.\n"))
- err = 1;
-
- osc_sys_ck = clk_get(NULL, "osc_sys_ck");
- if (WARN(IS_ERR(osc_sys_ck), "Failed to get osc_sys_ck.\n"))
- err = 1;
-
- if (err)
- return -ENOENT;
-
- /* REVISIT: not yet ready for 343x */
- if (clk_set_rate(dpll1_ck, mpurate))
- printk(KERN_ERR "*** Unable to set MPU rate\n");
-
- recalculate_root_clocks();
-
- osc_sys_rate = clk_get_rate(osc_sys_ck);
-
- pr_info("Switched to new clocking rate (Crystal/Core/MPU): "
- "%ld.%01ld/%ld/%ld MHz\n",
- (osc_sys_rate / 1000000),
- ((osc_sys_rate / 100000) % 10),
- (clk_get_rate(core_ck) / 1000000),
- (clk_get_rate(arm_fck) / 1000000));
-
- calibrate_delay();
-
- return 0;
+ return ret;
}
+
arch_initcall(omap3xxx_clk_arch_init);