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 typedef struct IMXCCMClass IMXCCMClass; 32 typedef struct IMXCCMState IMXCCMState; 33 #define IMX_CCM(obj) \ 34 OBJECT_CHECK(IMXCCMState, (obj), TYPE_IMX_CCM) 35 #define IMX_CCM_CLASS(klass) \ 36 OBJECT_CLASS_CHECK(IMXCCMClass, (klass), TYPE_IMX_CCM) 37 #define IMX_CCM_GET_CLASS(obj) \ 38 OBJECT_GET_CLASS(IMXCCMClass, (obj), TYPE_IMX_CCM) 39 40 struct IMXCCMState { 41 /* <private> */ 42 SysBusDevice parent_obj; 43 44 /* <public> */ 45 46 }; 47 48 typedef enum { 49 CLK_NONE, 50 CLK_IPG, 51 CLK_IPG_HIGH, 52 CLK_32k, 53 CLK_EXT, 54 CLK_HIGH_DIV, 55 CLK_HIGH, 56 } IMXClk; 57 58 struct IMXCCMClass { 59 /* <private> */ 60 SysBusDeviceClass parent_class; 61 62 /* <public> */ 63 uint32_t (*get_clock_frequency)(IMXCCMState *s, IMXClk clk); 64 }; 65 66 uint32_t imx_ccm_calc_pll(uint32_t pllreg, uint32_t base_freq); 67 68 uint32_t imx_ccm_get_clock_frequency(IMXCCMState *s, IMXClk clock); 69 70 #endif /* IMX_CCM_H */ 71