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-rw-r--r--arch/arm/include/asm/arch-exynos/clk.h62
1 files changed, 62 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-exynos/clk.h b/arch/arm/include/asm/arch-exynos/clk.h
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+++ b/arch/arm/include/asm/arch-exynos/clk.h
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+/*
+ * (C) Copyright 2010 Samsung Electronics
+ * Minkyu Kang <mk7.kang@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+#ifndef __ASM_ARM_ARCH_CLK_H_
+#define __ASM_ARM_ARCH_CLK_H_
+
+#define APLL 0
+#define MPLL 1
+#define EPLL 2
+#define HPLL 3
+#define VPLL 4
+#define BPLL 5
+
+enum pll_src_bit {
+ EXYNOS_SRC_MPLL = 6,
+ EXYNOS_SRC_EPLL,
+ EXYNOS_SRC_VPLL,
+};
+
+unsigned long get_pll_clk(int pllreg);
+unsigned long get_arm_clk(void);
+unsigned long get_i2c_clk(void);
+unsigned long get_pwm_clk(void);
+unsigned long get_uart_clk(int dev_index);
+unsigned long get_mmc_clk(int dev_index);
+void set_mmc_clk(int dev_index, unsigned int div);
+unsigned long get_lcd_clk(void);
+void set_lcd_clk(void);
+void set_mipi_clk(void);
+void set_i2s_clk_source(void);
+int set_i2s_clk_prescaler(unsigned int src_frq, unsigned int dst_frq);
+int set_epll_clk(unsigned long rate);
+int set_spi_clk(int periph_id, unsigned int rate);
+
+/**
+ * get the clk frequency of the required peripheral
+ *
+ * @param peripheral Peripheral id
+ *
+ * @return frequency of the peripheral clk
+ */
+unsigned long clock_get_periph_rate(int peripheral);
+
+#endif
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