1 /* 2 * OMAP2/3 clockdomain common data 3 * 4 * Copyright (C) 2008-2011 Texas Instruments, Inc. 5 * Copyright (C) 2008-2010 Nokia Corporation 6 * 7 * Paul Walmsley, Jouni Högander 8 * 9 * This file contains clockdomains and clockdomain wakeup/sleep 10 * dependencies for the OMAP2/3 chips. Some notes: 11 * 12 * A useful validation rule for struct clockdomain: Any clockdomain 13 * referenced by a wkdep_srcs or sleepdep_srcs array must have a 14 * dep_bit assigned. So wkdep_srcs/sleepdep_srcs are really just 15 * software-controllable dependencies. Non-software-controllable 16 * dependencies do exist, but they are not encoded below (yet). 17 * 18 * 24xx does not support programmable sleep dependencies (SLEEPDEP) 19 * 20 * The overly-specific dep_bit names are due to a bit name collision 21 * with CM_FCLKEN_{DSP,IVA2}. The DSP/IVA2 PM_WKDEP and CM_SLEEPDEP shift 22 * value are the same for all powerdomains: 2 23 * 24 * XXX should dep_bit be a mask, so we can test to see if it is 0 as a 25 * sanity check? 26 * XXX encode hardware fixed wakeup dependencies -- esp. for 3430 CORE 27 */ 28 29 /* 30 * To-Do List 31 * -> Port the Sleep/Wakeup dependencies for the domains 32 * from the Power domain framework 33 */ 34 35 #include <linux/kernel.h> 36 #include <linux/io.h> 37 38 #include "clockdomain.h" 39 #include "prm2xxx_3xxx.h" 40 #include "cm2xxx_3xxx.h" 41 #include "cm-regbits-24xx.h" 42 #include "cm-regbits-34xx.h" 43 #include "cm-regbits-44xx.h" 44 #include "prm-regbits-24xx.h" 45 #include "prm-regbits-34xx.h" 46 47 /* 48 * Clockdomain dependencies for wkdeps/sleepdeps 49 * 50 * XXX Hardware dependencies (e.g., dependencies that cannot be 51 * changed in software) are not included here yet, but should be. 52 */ 53 54 /* Wakeup dependency source arrays */ 55 56 /* 2xxx-specific possible dependencies */ 57 58 /* 2xxx PM_WKDEP_GFX: CORE, MPU, WKUP */ 59 struct clkdm_dep gfx_24xx_wkdeps[] = { 60 { .clkdm_name = "core_l3_clkdm" }, 61 { .clkdm_name = "core_l4_clkdm" }, 62 { .clkdm_name = "mpu_clkdm" }, 63 { .clkdm_name = "wkup_clkdm" }, 64 { NULL }, 65 }; 66 67 /* 2xxx PM_WKDEP_DSP: CORE, MPU, WKUP */ 68 struct clkdm_dep dsp_24xx_wkdeps[] = { 69 { .clkdm_name = "core_l3_clkdm" }, 70 { .clkdm_name = "core_l4_clkdm" }, 71 { .clkdm_name = "mpu_clkdm" }, 72 { .clkdm_name = "wkup_clkdm" }, 73 { NULL }, 74 }; 75 76 77 /* 78 * OMAP2/3-common clockdomains 79 * 80 * Even though the 2420 has a single PRCM module from the 81 * interconnect's perspective, internally it does appear to have 82 * separate PRM and CM clockdomains. The usual test case is 83 * sys_clkout/sys_clkout2. 84 */ 85 86 /* This is an implicit clockdomain - it is never defined as such in TRM */ 87 struct clockdomain wkup_common_clkdm = { 88 .name = "wkup_clkdm", 89 .pwrdm = { .name = "wkup_pwrdm" }, 90 .dep_bit = OMAP_EN_WKUP_SHIFT, 91 }; 92 93 struct clockdomain prm_common_clkdm = { 94 .name = "prm_clkdm", 95 .pwrdm = { .name = "wkup_pwrdm" }, 96 }; 97 98 struct clockdomain cm_common_clkdm = { 99 .name = "cm_clkdm", 100 .pwrdm = { .name = "core_pwrdm" }, 101 }; 102