4  * SPDX-License-Identifier: Apache-2.0
22 	get_uart(dev)->cr |= PL011_CR_AMBIQ_CLKEN;  in pl011_ambiq_enable_clk()
43 		return -EINVAL;  in pl011_ambiq_clk_set()
46 	get_uart(dev)->cr |= FIELD_PREP(PL011_CR_AMBIQ_CLKSEL, clksel);  in pl011_ambiq_clk_set()
95 		if (!pRegisterStatus->bValid) {  in uart_ambiq_pm_action()
96 			return -EPERM;  in uart_ambiq_pm_action()
99 		/*The resume and suspend actions may be executed back-to-back,  in uart_ambiq_pm_action()
100 		 * so we add a busy wait here for stabilization.  in uart_ambiq_pm_action()
110 		UARTn(ui32Module)->ILPR = pRegisterStatus->regILPR;  in uart_ambiq_pm_action()
111 		UARTn(ui32Module)->IBRD = pRegisterStatus->regIBRD;  in uart_ambiq_pm_action()
112 		UARTn(ui32Module)->FBRD = pRegisterStatus->regFBRD;  in uart_ambiq_pm_action()
113 		UARTn(ui32Module)->LCRH = pRegisterStatus->regLCRH;  in uart_ambiq_pm_action()
114 		UARTn(ui32Module)->CR = pRegisterStatus->regCR;  in uart_ambiq_pm_action()
115 		UARTn(ui32Module)->IFLS = pRegisterStatus->regIFLS;  in uart_ambiq_pm_action()
116 		UARTn(ui32Module)->IER = pRegisterStatus->regIER;  in uart_ambiq_pm_action()
117 		pRegisterStatus->bValid = false;  in uart_ambiq_pm_action()
124 		while ((get_uart(dev)->fr & PL011_FR_BUSY) != 0)  in uart_ambiq_pm_action()
130 		pRegisterStatus->regILPR = UARTn(ui32Module)->ILPR;  in uart_ambiq_pm_action()
131 		pRegisterStatus->regIBRD = UARTn(ui32Module)->IBRD;  in uart_ambiq_pm_action()
132 		pRegisterStatus->regFBRD = UARTn(ui32Module)->FBRD;  in uart_ambiq_pm_action()
133 		pRegisterStatus->regLCRH = UARTn(ui32Module)->LCRH;  in uart_ambiq_pm_action()
134 		pRegisterStatus->regCR = UARTn(ui32Module)->CR;  in uart_ambiq_pm_action()
135 		pRegisterStatus->regIFLS = UARTn(ui32Module)->IFLS;  in uart_ambiq_pm_action()
136 		pRegisterStatus->regIER = UARTn(ui32Module)->IER;  in uart_ambiq_pm_action()
137 		pRegisterStatus->bValid = true;  in uart_ambiq_pm_action()
144 		UARTn(ui32Module)->IEC = 0xFFFFFFFF;  in uart_ambiq_pm_action()
152 		UARTn(ui32Module)->CR = 0;  in uart_ambiq_pm_action()
158 		return -ENOTSUP;  in uart_ambiq_pm_action()
163 /* Problem: writes to power configure register takes some time to take effective.