[U-Boot] [PATCH 1/7 V3] EXYNOS5: Add function to enable XXTI clock source

[Rajeshwari Shinde]

This patch adds funtion to enable XXTI clock source
required by MAX98095 codec.

Signed-off-by: Rajeshwari Shinde <rajeshwari.s at samsung.com>
Acked-by: Simon Glass <sjg at chromium.org>
---
Changes in V2:
	- Corrected multi-line comment style
Chnages in V3:
	- None
 arch/arm/cpu/armv7/exynos/power.c        |   11 +++++++++++
 arch/arm/include/asm/arch-exynos/power.h |   11 +++++++++++
 2 files changed, 22 insertions(+), 0 deletions(-)

diff --git a/arch/arm/cpu/armv7/exynos/power.c b/arch/arm/cpu/armv7/exynos/power.c
index 8572cfd..8de30c1 100644
--- a/arch/arm/cpu/armv7/exynos/power.c
+++ b/arch/arm/cpu/armv7/exynos/power.c
@@ -105,3 +105,14 @@ void power_ps_hold_setup(void)
 	setbits_le32(&power->ps_hold_control,
 			EXYNOS_PS_HOLD_CONTROL_DATA_HIGH);
 }
+
+
+void power_enable_xclkout(void)
+{
+	struct exynos5_power *power =
+		(struct exynos5_power *)samsung_get_base_power();
+
+	/* use xxti for xclk out */
+	clrsetbits_le32(&power->pmu_debug, PMU_DEBUG_CLKOUT_SEL_MASK,
+				PMU_DEBUG_XXTI);
+}
diff --git a/arch/arm/include/asm/arch-exynos/power.h b/arch/arm/include/asm/arch-exynos/power.h
index 85e2cd9..9afd3ed 100644
--- a/arch/arm/include/asm/arch-exynos/power.h
+++ b/arch/arm/include/asm/arch-exynos/power.h
@@ -872,4 +872,15 @@ void set_dp_phy_ctrl(unsigned int enable);
  * (e.g. power button).
  */
 void power_ps_hold_setup(void);
+
+/* PMU_DEBUG bits [12:8] = 0x1000 selects XXTI clock source */
+#define PMU_DEBUG_XXTI                          0x1000
+/* Mask bit[12:8] for xxti clock selection */
+#define PMU_DEBUG_CLKOUT_SEL_MASK               0x1f00
+
+/*
+ * Pmu debug is used for xclkout, enable xclkout with
+ * source as XXTI
+ */
+void power_enable_xclkout(void);
 #endif
-- 
1.7.4.4