ARM: EXYNOS: Remove legacy timer initialization code

This patch removes legacy timer initialization code that was used to
set up system timers when booting with ATAGS, which is not supported
on Exynos any more.

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/mach-exynos/common.c

@@ -299,13 +299,6 @@ static struct map_desc exynos5440_iodesc0[] __initdata = {
 	},
 };
 
-static struct samsung_pwm_variant exynos4_pwm_variant = {
-	.bits		= 32,
-	.div_base	= 0,
-	.has_tint_cstat	= true,
-	.tclk_mask	= 0,
-};
-
 void exynos4_restart(char mode, const char *cmd)
 {
 	__raw_writel(0x1, S5P_SWRESET);
@@ -451,38 +444,10 @@ static void __init exynos5440_map_io(void)
 	iotable_init(exynos5440_iodesc0, ARRAY_SIZE(exynos5440_iodesc0));
 }
 
-void __init exynos_set_timer_source(u8 channels)
-{
-	exynos4_pwm_variant.output_mask = BIT(SAMSUNG_PWM_NUM) - 1;
-	exynos4_pwm_variant.output_mask &= ~channels;
-}
-
 void __init exynos_init_time(void)
 {
-	unsigned int timer_irqs[SAMSUNG_PWM_NUM] = {
-		EXYNOS4_IRQ_TIMER0_VIC, EXYNOS4_IRQ_TIMER1_VIC,
-		EXYNOS4_IRQ_TIMER2_VIC, EXYNOS4_IRQ_TIMER3_VIC,
-		EXYNOS4_IRQ_TIMER4_VIC,
-	};
-
-	if (of_have_populated_dt()) {
-		of_clk_init(NULL);
-		clocksource_of_init();
-	} else {
-		/* todo: remove after migrating legacy E4 platforms to dt */
-#ifdef CONFIG_ARCH_EXYNOS4
-		exynos4_clk_init(NULL, !soc_is_exynos4210(), S5P_VA_CMU, readl(S5P_VA_CHIPID + 8) & 1);
-		exynos4_clk_register_fixed_ext(xxti_f, xusbxti_f);
-#endif
-#ifdef CONFIG_CLKSRC_SAMSUNG_PWM
-		if (soc_is_exynos4210() && samsung_rev() == EXYNOS4210_REV_0)
-			samsung_pwm_clocksource_init(S3C_VA_TIMER,
-					timer_irqs, &exynos4_pwm_variant);
-		else
-#endif
-			mct_init(S5P_VA_SYSTIMER, EXYNOS4_IRQ_MCT_G0,
-					EXYNOS4_IRQ_MCT_L0, EXYNOS4_IRQ_MCT_L1);
-	}
+	of_clk_init(NULL);
+	clocksource_of_init();
 }
 
 void __init exynos4_init_irq(void)