[PATCH] sh: Make peripheral clock frequency setting mandatory

Pretty much every subtype does this now anyways, and as we depend on it in a
few places being set to something sensible quite early on, it's better for a
new subtype to simply set a sensible default.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/sh/Kconfig

@@ -396,14 +396,8 @@ source "arch/sh/boards/renesas/hs7751rvoip/Kconfig"
 
 source "arch/sh/boards/renesas/rts7751r2d/Kconfig"
 
-config SH_PCLK_FREQ_BOOL
-	bool "Set default pclk frequency"
-	default y if !SH_RTC
-	default n
-
 config SH_PCLK_FREQ
 	int "Peripheral clock frequency (in Hz)"
-	depends on SH_PCLK_FREQ_BOOL
 	default "50000000" if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7780
 	default "60000000" if CPU_SUBTYPE_SH7751
 	default "33333333" if CPU_SUBTYPE_SH7300 || CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7760

arch/sh/kernel/cpu/clock.c

@@ -38,9 +38,7 @@ static DECLARE_MUTEX(clock_list_sem);
 static struct clk master_clk = {
 	.name		= "master_clk",
 	.flags		= CLK_ALWAYS_ENABLED | CLK_RATE_PROPAGATES,
-#ifdef CONFIG_SH_PCLK_FREQ_BOOL
 	.rate		= CONFIG_SH_PCLK_FREQ,
-#endif
 };
 
 static struct clk module_clk = {
@@ -227,16 +225,7 @@ int __init clk_init(void)
 {
 	int i, ret = 0;
 
-	if (unlikely(!master_clk.rate))
-		/*
-		 * NOTE: This will break if the default divisor has been
-		 * changed.
-		 *
-		 * No one should be changing the default on us however,
-		 * expect that a sane value for CONFIG_SH_PCLK_FREQ will
-		 * be defined in the event of a different divisor.
-		 */
-		master_clk.rate = get_timer_frequency() * 4;
+	BUG_ON(unlikely(!master_clk.rate));
 
 	for (i = 0; i < ARRAY_SIZE(onchip_clocks); i++) {
 		struct clk *clk = onchip_clocks[i];