1257483Sian/*- 2257483Sian * Copyright (c) 2012 Olivier Houchard. 3257483Sian * All rights reserved. 4257483Sian * 5257483Sian * Redistribution and use in source and binary forms, with or without 6257483Sian * modification, are permitted provided that the following conditions 7257483Sian * are met: 8257483Sian * 1. Redistributions of source code must retain the above copyright 9257483Sian * notice, this list of conditions and the following disclaimer. 10257483Sian * 2. Redistributions in binary form must reproduce the above copyright 11257483Sian * notice, this list of conditions and the following disclaimer in the 12257483Sian * documentation and/or other materials provided with the distribution. 13257483Sian * 14257483Sian * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15257483Sian * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16257483Sian * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17257483Sian * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 18257483Sian * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19257483Sian * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20257483Sian * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21257483Sian * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22257483Sian * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23257483Sian * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24257483Sian */ 25257483Sian 26257483Sian#include <sys/cdefs.h> 27257483Sian__FBSDID("$FreeBSD$"); 28257483Sian 29257483Sian/* 30257483Sian * The machine-dependent part of the arm/pl310 driver for imx6 SoCs. 31257483Sian */ 32257483Sian 33257483Sian#include <sys/types.h> 34257483Sian#include <sys/param.h> 35257483Sian#include <sys/systm.h> 36257483Sian#include <sys/bus.h> 37257483Sian#include <sys/rman.h> 38257483Sian#include <sys/lock.h> 39257483Sian#include <sys/mutex.h> 40257483Sian 41257483Sian#include <machine/bus.h> 42257483Sian#include <machine/pl310.h> 43257483Sian 44257483Sianvoid 45257483Sianplatform_pl310_init(struct pl310_softc *sc) 46257483Sian{ 47266384Sian uint32_t reg; 48266384Sian 49266384Sian /* 50266384Sian * Enable power saving modes: 51266384Sian * - Dynamic Gating stops the clock when the controller is idle. 52266384Sian * - Standby stops the clock when the cores are in WFI mode. 53266384Sian */ 54266384Sian reg = pl310_read4(sc, PL310_POWER_CTRL); 55266384Sian reg |= POWER_CTRL_ENABLE_GATING | POWER_CTRL_ENABLE_STANDBY; 56266384Sian pl310_write4(sc, PL310_POWER_CTRL, reg); 57266384Sian 58266384Sian pl310_set_ram_latency(sc, PL310_TAG_RAM_CTRL, 4, 2, 3); 59266384Sian pl310_set_ram_latency(sc, PL310_DATA_RAM_CTRL, 4, 2, 3); 60257483Sian} 61257483Sian 62257483Sianvoid 63257483Sianplatform_pl310_write_ctrl(struct pl310_softc *sc, uint32_t val) 64257483Sian{ 65257483Sian 66257483Sian pl310_write4(sc, PL310_CTRL, val); 67257483Sian} 68257483Sian 69257483Sianvoid 70257483Sianplatform_pl310_write_debug(struct pl310_softc *sc, uint32_t val) 71257483Sian{ 72257483Sian 73257483Sian pl310_write4(sc, PL310_DEBUG_CTRL, val); 74257483Sian} 75257483Sian 76