/* $NetBSD: omap3_cm.c,v 1.4.2.2 2019/11/27 13:46:44 martin Exp $ */ /*- * Copyright (c) 2017 Jared McNeill * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __KERNEL_RCSID(1, "$NetBSD: omap3_cm.c,v 1.4.2.2 2019/11/27 13:46:44 martin Exp $"); #include #include #include #include #include #define TI_PRCM_PRIVATE #include #define CM_CORE1_BASE 0x0a00 #define CM_CORE3_BASE 0x0a08 #define CM_WKUP_BASE 0x0c00 #define CM_PER_BASE 0x1000 #define CM_USBHOST_BASE 0x1400 #define CM_FCLKEN 0x00 #define CM_ICLKEN 0x10 #define CM_AUTOIDLE 0x30 #define CM_CLKSEL 0x40 static int omap3_cm_match(device_t, cfdata_t, void *); static void omap3_cm_attach(device_t, device_t, void *); static int omap3_cm_hwmod_nopenable(struct ti_prcm_softc *sc, struct ti_prcm_clk *tc, int enable) { return 0; } static int omap3_cm_hwmod_enable(struct ti_prcm_softc *sc, struct ti_prcm_clk *tc, int enable) { uint32_t val; val = PRCM_READ(sc, tc->u.hwmod.reg + CM_FCLKEN); if (enable) val |= tc->u.hwmod.mask; else val &= ~tc->u.hwmod.mask; PRCM_WRITE(sc, tc->u.hwmod.reg + CM_FCLKEN, val); val = PRCM_READ(sc, tc->u.hwmod.reg + CM_ICLKEN); if (enable) val |= tc->u.hwmod.mask; else val &= ~tc->u.hwmod.mask; PRCM_WRITE(sc, tc->u.hwmod.reg + CM_ICLKEN, val); if (tc->u.hwmod.flags & TI_HWMOD_DISABLE_AUTOIDLE) { val = PRCM_READ(sc, tc->u.hwmod.reg + CM_AUTOIDLE); val &= ~tc->u.hwmod.mask; PRCM_WRITE(sc, tc->u.hwmod.reg + CM_AUTOIDLE, val); } return 0; } #define OMAP3_CM_HWMOD_CORE1(_name, _bit, _parent, _flags) \ TI_PRCM_HWMOD_MASK((_name), CM_CORE1_BASE, __BIT(_bit), (_parent), omap3_cm_hwmod_enable, (_flags)) #define OMAP3_CM_HWMOD_CORE3(_name, _bit, _parent, _flags) \ TI_PRCM_HWMOD_MASK((_name), CM_CORE3_BASE, __BIT(_bit), (_parent), omap3_cm_hwmod_enable, (_flags)) #define OMAP3_CM_HWMOD_WKUP(_name, _bit, _parent, _flags) \ TI_PRCM_HWMOD_MASK((_name), CM_WKUP_BASE, __BIT(_bit), (_parent), omap3_cm_hwmod_enable, (_flags)) #define OMAP3_CM_HWMOD_PER(_name, _bit, _parent, _flags) \ TI_PRCM_HWMOD_MASK((_name), CM_PER_BASE, __BIT(_bit), (_parent), omap3_cm_hwmod_enable, (_flags)) #define OMAP3_CM_HWMOD_USBHOST(_name, _bit, _parent, _flags) \ TI_PRCM_HWMOD_MASK((_name), CM_USBHOST_BASE, __BIT(_bit), (_parent), omap3_cm_hwmod_enable, (_flags)) #define OMAP3_CM_HWMOD_NOP(_name, _parent) \ TI_PRCM_HWMOD_MASK((_name), 0, 0, (_parent), omap3_cm_hwmod_nopenable, 0) static const char * const compatible[] = { "ti,omap3-cm", NULL }; CFATTACH_DECL_NEW(omap3_cm, sizeof(struct ti_prcm_softc), omap3_cm_match, omap3_cm_attach, NULL, NULL); static struct ti_prcm_clk omap3_cm_clks[] = { /* XXX until we get a proper clock tree */ TI_PRCM_FIXED("FIXED_32K", 32768), TI_PRCM_FIXED("SYS_CLK", 13000000), TI_PRCM_FIXED("MMC_CLK", 96000000), TI_PRCM_FIXED_FACTOR("PERIPH_CLK", 1, 1, "SYS_CLK"), OMAP3_CM_HWMOD_CORE1("usb_otg_hs", 4, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_CORE1("mcbsp1", 9, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_CORE1("mcbsp5", 10, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_CORE1("timer10", 11, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_CORE1("timer11", 12, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_CORE1("uart1", 13, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_CORE1("uart2", 14, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_CORE1("i2c1", 15, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_CORE1("i2c2", 16, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_CORE1("i2c3", 17, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_CORE1("mcspi1", 18, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_CORE1("mcspi2", 19, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_CORE1("mcspi3", 20, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_CORE1("mcspi4", 21, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_CORE1("hdq1w", 22, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_CORE1("mmc1", 24, "MMC_CLK", 0), OMAP3_CM_HWMOD_CORE1("mmc2", 25, "MMC_CLK", 0), OMAP3_CM_HWMOD_CORE1("mmc3", 30, "MMC_CLK", 0), OMAP3_CM_HWMOD_CORE3("usb_tll_hs", 2, "PERIPH_CLK", TI_HWMOD_DISABLE_AUTOIDLE), OMAP3_CM_HWMOD_WKUP("timer1", 0, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_WKUP("counter_32k", 2, "FIXED_32K", 0), OMAP3_CM_HWMOD_WKUP("gpio1", 3, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_WKUP("wd_timer2", 5, "FIXED_32K", 0), OMAP3_CM_HWMOD_PER("mcbsp2", 0, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_PER("mcbsp3", 1, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_PER("mcbsp4", 2, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_PER("timer2", 3, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_PER("timer3", 4, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_PER("timer4", 5, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_PER("timer5", 6, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_PER("timer6", 7, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_PER("timer7", 8, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_PER("timer8", 9, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_PER("timer9", 10, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_PER("uart3", 11, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_PER("wd_timer3", 12, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_PER("gpio2", 13, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_PER("gpio3", 14, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_PER("gpio4", 15, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_PER("gpio5", 16, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_PER("gpio6", 17, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_USBHOST("usb_host_hs", 0, "PERIPH_CLK", 0), OMAP3_CM_HWMOD_NOP("gpmc", "PERIPH_CLK"), }; static void omap3_cm_initclocks(struct ti_prcm_softc *sc) { uint32_t val; /* Select SYS_CLK for GPTIMER 2 and 3 */ val = PRCM_READ(sc, CM_PER_BASE + CM_CLKSEL); val |= __BIT(0); /* CLKSEL_GPT2 0x1: source is SYS_CLK */ val |= __BIT(1); /* CLKSEL_GPT3 0x1: source is SYS_CLK */ PRCM_WRITE(sc, CM_PER_BASE + CM_CLKSEL, val); } static int omap3_cm_match(device_t parent, cfdata_t cf, void *aux) { struct fdt_attach_args * const faa = aux; return of_match_compatible(faa->faa_phandle, compatible); } static void omap3_cm_attach(device_t parent, device_t self, void *aux) { struct ti_prcm_softc * const sc = device_private(self); struct fdt_attach_args * const faa = aux; int clocks; sc->sc_dev = self; sc->sc_phandle = faa->faa_phandle; sc->sc_bst = faa->faa_bst; sc->sc_clks = omap3_cm_clks; sc->sc_nclks = __arraycount(omap3_cm_clks); if (ti_prcm_attach(sc) != 0) return; aprint_naive("\n"); aprint_normal(": OMAP3xxx CM\n"); omap3_cm_initclocks(sc); clocks = of_find_firstchild_byname(sc->sc_phandle, "clocks"); if (clocks > 0) fdt_add_bus(self, clocks, faa); }