diff options
Diffstat (limited to 'drivers/clk/mvebu/common.h')
-rw-r--r-- | drivers/clk/mvebu/common.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/drivers/clk/mvebu/common.h b/drivers/clk/mvebu/common.h new file mode 100644 index 0000000000..d1ab79b431 --- /dev/null +++ b/drivers/clk/mvebu/common.h @@ -0,0 +1,56 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Marvell EBU SoC common clock handling + * + * Copyright (C) 2012 Marvell + * + * Gregory CLEMENT <gregory.clement@free-electrons.com> + * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> + * Andrew Lunn <andrew@lunn.ch> + * + */ + +#ifndef __CLK_MVEBU_COMMON_H_ +#define __CLK_MVEBU_COMMON_H_ + +#include <linux/kernel.h> + +extern spinlock_t ctrl_gating_lock; + +struct device_node; + +struct coreclk_ratio { + int id; + const char *name; +}; + +struct coreclk_soc_desc { + u32 (*get_tclk_freq)(void __iomem *sar); + u32 (*get_cpu_freq)(void __iomem *sar); + void (*get_clk_ratio)(void __iomem *sar, int id, int *mult, int *div); + u32 (*get_refclk_freq)(void __iomem *sar); + bool (*is_sscg_enabled)(void __iomem *sar); + u32 (*fix_sscg_deviation)(u32 system_clk); + const struct coreclk_ratio *ratios; + int num_ratios; +}; + +struct clk_gating_soc_desc { + const char *name; + const char *parent; + int bit_idx; + unsigned long flags; +}; + +void __init mvebu_coreclk_setup(struct device_node *np, + const struct coreclk_soc_desc *desc); + +void __init mvebu_clk_gating_setup(struct device_node *np, + const struct clk_gating_soc_desc *desc); + +/* + * This function is shared among the Kirkwood, Armada 370, Armada XP + * and Armada 375 SoC + */ +u32 kirkwood_fix_sscg_deviation(u32 system_clk); +#endif |