imx_ccm.h (1417B)
1 /* 2 * IMX Clock Control Module base class 3 * 4 * Copyright (C) 2012 NICTA 5 * Updated by Jean-Christophe Dubois <jcd@tribudubois.net> 6 * 7 * This work is licensed under the terms of the GNU GPL, version 2 or later. 8 * See the COPYING file in the top-level directory. 9 */ 10 11 #ifndef IMX_CCM_H 12 #define IMX_CCM_H 13 14 #include "hw/sysbus.h" 15 #include "qom/object.h" 16 17 #define CKIL_FREQ 32768 /* nominal 32khz clock */ 18 19 /* PLL control registers */ 20 #define PD(v) (((v) >> 26) & 0xf) 21 #define MFD(v) (((v) >> 16) & 0x3ff) 22 #define MFI(v) (((v) >> 10) & 0xf); 23 #define MFN(v) ((v) & 0x3ff) 24 25 #define PLL_PD(x) (((x) & 0xf) << 26) 26 #define PLL_MFD(x) (((x) & 0x3ff) << 16) 27 #define PLL_MFI(x) (((x) & 0xf) << 10) 28 #define PLL_MFN(x) (((x) & 0x3ff) << 0) 29 30 #define TYPE_IMX_CCM "imx.ccm" 31 OBJECT_DECLARE_TYPE(IMXCCMState, IMXCCMClass, IMX_CCM) 32 33 struct IMXCCMState { 34 /* <private> */ 35 SysBusDevice parent_obj; 36 37 /* <public> */ 38 39 }; 40 41 typedef enum { 42 CLK_NONE, 43 CLK_IPG, 44 CLK_IPG_HIGH, 45 CLK_32k, 46 CLK_EXT, 47 CLK_HIGH_DIV, 48 CLK_HIGH, 49 } IMXClk; 50 51 struct IMXCCMClass { 52 /* <private> */ 53 SysBusDeviceClass parent_class; 54 55 /* <public> */ 56 uint32_t (*get_clock_frequency)(IMXCCMState *s, IMXClk clk); 57 }; 58 59 uint32_t imx_ccm_calc_pll(uint32_t pllreg, uint32_t base_freq); 60 61 uint32_t imx_ccm_get_clock_frequency(IMXCCMState *s, IMXClk clock); 62 63 #endif /* IMX_CCM_H */