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Diffstat (limited to 'include/hw/misc/imx_ccm.h')
-rw-r--r-- | include/hw/misc/imx_ccm.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/include/hw/misc/imx_ccm.h b/include/hw/misc/imx_ccm.h new file mode 100644 index 000000000..7e5678e97 --- /dev/null +++ b/include/hw/misc/imx_ccm.h @@ -0,0 +1,63 @@ +/* + * IMX Clock Control Module base class + * + * Copyright (C) 2012 NICTA + * Updated by Jean-Christophe Dubois <jcd@tribudubois.net> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef IMX_CCM_H +#define IMX_CCM_H + +#include "hw/sysbus.h" +#include "qom/object.h" + +#define CKIL_FREQ 32768 /* nominal 32khz clock */ + +/* PLL control registers */ +#define PD(v) (((v) >> 26) & 0xf) +#define MFD(v) (((v) >> 16) & 0x3ff) +#define MFI(v) (((v) >> 10) & 0xf); +#define MFN(v) ((v) & 0x3ff) + +#define PLL_PD(x) (((x) & 0xf) << 26) +#define PLL_MFD(x) (((x) & 0x3ff) << 16) +#define PLL_MFI(x) (((x) & 0xf) << 10) +#define PLL_MFN(x) (((x) & 0x3ff) << 0) + +#define TYPE_IMX_CCM "imx.ccm" +OBJECT_DECLARE_TYPE(IMXCCMState, IMXCCMClass, IMX_CCM) + +struct IMXCCMState { + /* <private> */ + SysBusDevice parent_obj; + + /* <public> */ + +}; + +typedef enum { + CLK_NONE, + CLK_IPG, + CLK_IPG_HIGH, + CLK_32k, + CLK_EXT, + CLK_HIGH_DIV, + CLK_HIGH, +} IMXClk; + +struct IMXCCMClass { + /* <private> */ + SysBusDeviceClass parent_class; + + /* <public> */ + uint32_t (*get_clock_frequency)(IMXCCMState *s, IMXClk clk); +}; + +uint32_t imx_ccm_calc_pll(uint32_t pllreg, uint32_t base_freq); + +uint32_t imx_ccm_get_clock_frequency(IMXCCMState *s, IMXClk clock); + +#endif /* IMX_CCM_H */ |