diff options
Diffstat (limited to 'arch/arm/mach-omap2/cm33xx.c')
| -rw-r--r-- | arch/arm/mach-omap2/cm33xx.c | 30 |
1 files changed, 17 insertions, 13 deletions
diff --git a/arch/arm/mach-omap2/cm33xx.c b/arch/arm/mach-omap2/cm33xx.c index 084d454f6074..a4dd42abda89 100644 --- a/arch/arm/mach-omap2/cm33xx.c +++ b/arch/arm/mach-omap2/cm33xx.c @@ -1,19 +1,11 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * AM33XX CM functions * - * Copyright (C) 2011-2012 Texas Instruments Incorporated - http://www.ti.com/ + * Copyright (C) 2011-2012 Texas Instruments Incorporated - https://www.ti.com/ * Vaibhav Hiremath <hvaibhav@ti.com> * - * Reference taken from from OMAP4 cminst44xx.c - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation version 2. - * - * This program is distributed "as is" WITHOUT ANY WARRANTY of any - * kind, whether express or implied; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. + * Reference taken from OMAP4 cminst44xx.c */ #include <linux/kernel.h> @@ -28,6 +20,9 @@ #include "cm-regbits-34xx.h" #include "cm-regbits-33xx.h" #include "prm33xx.h" +#if IS_ENABLED(CONFIG_SUSPEND) +#include <linux/suspend.h> +#endif /* * CLKCTRL_IDLEST_*: possible values for the CM_*_CLKCTRL.IDLEST bitfield: @@ -336,8 +331,17 @@ static int am33xx_clkdm_clk_disable(struct clockdomain *clkdm) { bool hwsup = false; +#if IS_ENABLED(CONFIG_SUSPEND) + /* + * In case of standby, Don't put the l4ls clk domain to sleep. + * Since CM3 PM FW doesn't wake-up/enable the l4ls clk domain + * upon wake-up, CM3 PM FW fails to wake-up th MPU. + */ + if (pm_suspend_target_state == PM_SUSPEND_STANDBY && + (clkdm->flags & CLKDM_STANDBY_FORCE_WAKEUP)) + return 0; +#endif hwsup = am33xx_cm_is_clkdm_in_hwsup(clkdm->cm_inst, clkdm->clkdm_offs); - if (!hwsup && (clkdm->flags & CLKDM_CAN_FORCE_SLEEP)) am33xx_clkdm_sleep(clkdm); @@ -365,7 +369,7 @@ static int am33xx_clkdm_save_context(struct clockdomain *clkdm) } /** - * am33xx_restore_save_context - Restore the clockdomain transition context + * am33xx_clkdm_restore_context - Restore the clockdomain transition context * @clkdm: The clockdomain pointer whose context needs to be restored * * Restore the clockdomain transition context. |