1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * OMAP2/3 clockdomain common data 4 * 5 * Copyright (C) 2008-2011 Texas Instruments, Inc. 6 * Copyright (C) 2008-2010 Nokia Corporation 7 * 8 * Paul Walmsley, Jouni Högander 9 * 10 * This file contains clockdomains and clockdomain wakeup/sleep 11 * dependencies for the OMAP2/3 chips. Some notes: 12 * 13 * A useful validation rule for struct clockdomain: Any clockdomain 14 * referenced by a wkdep_srcs or sleepdep_srcs array must have a 15 * dep_bit assigned. So wkdep_srcs/sleepdep_srcs are really just 16 * software-controllable dependencies. Non-software-controllable 17 * dependencies do exist, but they are not encoded below (yet). 18 * 19 * 24xx does not support programmable sleep dependencies (SLEEPDEP) 20 * 21 * The overly-specific dep_bit names are due to a bit name collision 22 * with CM_FCLKEN_{DSP,IVA2}. The DSP/IVA2 PM_WKDEP and CM_SLEEPDEP shift 23 * value are the same for all powerdomains: 2 24 * 25 * XXX should dep_bit be a mask, so we can test to see if it is 0 as a 26 * sanity check? 27 * XXX encode hardware fixed wakeup dependencies -- esp. for 3430 CORE 28 */ 29 30 /* 31 * To-Do List 32 * -> Port the Sleep/Wakeup dependencies for the domains 33 * from the Power domain framework 34 */ 35 36 #include <linux/kernel.h> 37 #include <linux/io.h> 38 39 #include "clockdomain.h" 40 #include "prm2xxx_3xxx.h" 41 #include "cm2xxx_3xxx.h" 42 #include "cm-regbits-24xx.h" 43 #include "cm-regbits-34xx.h" 44 #include "cm-regbits-44xx.h" 45 #include "prm-regbits-24xx.h" 46 #include "prm-regbits-34xx.h" 47 48 /* 49 * Clockdomain dependencies for wkdeps/sleepdeps 50 * 51 * XXX Hardware dependencies (e.g., dependencies that cannot be 52 * changed in software) are not included here yet, but should be. 53 */ 54 55 /* Wakeup dependency source arrays */ 56 57 /* 2xxx-specific possible dependencies */ 58 59 /* 2xxx PM_WKDEP_GFX: CORE, MPU, WKUP */ 60 struct clkdm_dep gfx_24xx_wkdeps[] = { 61 { .clkdm_name = "core_l3_clkdm" }, 62 { .clkdm_name = "core_l4_clkdm" }, 63 { .clkdm_name = "mpu_clkdm" }, 64 { .clkdm_name = "wkup_clkdm" }, 65 { NULL }, 66 }; 67 68 /* 2xxx PM_WKDEP_DSP: CORE, MPU, WKUP */ 69 struct clkdm_dep dsp_24xx_wkdeps[] = { 70 { .clkdm_name = "core_l3_clkdm" }, 71 { .clkdm_name = "core_l4_clkdm" }, 72 { .clkdm_name = "mpu_clkdm" }, 73 { .clkdm_name = "wkup_clkdm" }, 74 { NULL }, 75 }; 76 77 78 /* 79 * OMAP2/3-common clockdomains 80 * 81 * Even though the 2420 has a single PRCM module from the 82 * interconnect's perspective, internally it does appear to have 83 * separate PRM and CM clockdomains. The usual test case is 84 * sys_clkout/sys_clkout2. 85 */ 86 87 /* This is an implicit clockdomain - it is never defined as such in TRM */ 88 struct clockdomain wkup_common_clkdm = { 89 .name = "wkup_clkdm", 90 .pwrdm = { .name = "wkup_pwrdm" }, 91 .dep_bit = OMAP_EN_WKUP_SHIFT, 92 .flags = CLKDM_ACTIVE_WITH_MPU, 93 }; 94