127 	struct clk *rtc_ck;  member
158 		 * It takes around 2 rtc_ck clock cycles to enter in  in stm32_rtc_enter_init_mode()
160 		 * slowest rtc_ck frequency may be 32kHz and highest should be  in stm32_rtc_enter_init_mode()
191 	 * synchronised, it takes around 2 rtc_ck clock cycles  in stm32_rtc_wait_sync()
507 	 * takes around 2 rtc_ck clock cycles  in stm32_rtc_set_alarm()
638 	rate = clk_get_rate(rtc->rtc_ck);  in stm32_rtc_init()
659 		dev_warn(&pdev->dev, "rtc_ck is %s\n",  in stm32_rtc_init()
735 		rtc->rtc_ck = devm_clk_get(&pdev->dev, NULL);  in stm32_rtc_probe()
742 		rtc->rtc_ck = devm_clk_get(&pdev->dev, "rtc_ck");  in stm32_rtc_probe()
744 	if (IS_ERR(rtc->rtc_ck)) {  in stm32_rtc_probe()
745 		dev_err(&pdev->dev, "no rtc_ck clock");  in stm32_rtc_probe()
746 		return PTR_ERR(rtc->rtc_ck);  in stm32_rtc_probe()
755 	ret = clk_prepare_enable(rtc->rtc_ck);  in stm32_rtc_probe()
767 	 * rtc_ck parent clock has changed (so RTC prescalers need to be  in stm32_rtc_probe()
836 	clk_disable_unprepare(rtc->rtc_ck);  in stm32_rtc_probe()
860 	clk_disable_unprepare(rtc->rtc_ck);  in stm32_rtc_remove()