1 // SPDX-License-Identifier: GPL-2.0+
9 #define DEVICE_ID_REG		0x00
13 	u8 val = 0;  in check_pll_status()
16 	ret = i2c_read(idt_addr, 0x17, 1, &val, 1);  in check_pll_status()
17 	if (ret < 0) {  in check_pll_status()
18 		printf("IDT:0x%x could not read status register from device.\n",  in check_pll_status()
23 	if (val & 0x04) {  in check_pll_status()
27 		return -1;  in check_pll_status()
30 	return 0;  in check_pll_status()
37 	u8 dev_id = 0;  in set_serdes_refclk()
40 	debug("IDT:Configuring idt8t49n222a device at I2C address: 0x%2x\n",  in set_serdes_refclk()
44 	if (ret < 0) {  in set_serdes_refclk()
45 		debug("IDT:0x%x could not read DEV_ID from device.\n",  in set_serdes_refclk()
50 	if ((dev_id != 0x00) && (dev_id != 0x24) && (dev_id != 0x2a)) {  in set_serdes_refclk()
51 		debug("IDT: device at address 0x%x is not idt8t49n222a.\n",  in set_serdes_refclk()
58 		return -1;  in set_serdes_refclk()
67 		return -1;  in set_serdes_refclk()
73 		debug("refclk1 should be 100MHZ, 122.88MHz, 125MHz"  in set_serdes_refclk()
75 		return -1;  in set_serdes_refclk()
81 		debug("refclk2 should be 100MHZ, 122.88MHz, 125MHz"  in set_serdes_refclk()
83 		return -1;  in set_serdes_refclk()
86 	if (feedback != 0 && feedback != 1) {  in set_serdes_refclk()
87 		debug("valid values for feedback are 0(default) or 1.\n");  in set_serdes_refclk()
88 		return -1;  in set_serdes_refclk()
97 		for (i = 0; i < NUM_IDT_REGS; i++)  in set_serdes_refclk()
98 			i2c_reg_write(idt_addr, idt_conf_122_88[i][0],  in set_serdes_refclk()
102 			for (i = 0; i < NUM_IDT_REGS_FEEDBACK; i++)  in set_serdes_refclk()
104 					idt_conf_122_88_feedback[i][0],  in set_serdes_refclk()
111 		for (i = 0; i < NUM_IDT_REGS; i++)  in set_serdes_refclk()
112 			i2c_reg_write(idt_addr, idt_conf_not_122_88[i][0],  in set_serdes_refclk()
117 	 * Refclk1 = 100MHz  Refclk2 = 125MHz  in set_serdes_refclk()
120 		printf("Setting refclk1:100 and refclk2:125\n");  in set_serdes_refclk()
121 		i2c_reg_write(idt_addr, 0x11, 0x10);  in set_serdes_refclk()
129 		i2c_reg_write(idt_addr, 0x10, 0x10);  in set_serdes_refclk()
130 		i2c_reg_write(idt_addr, 0x11, 0x10);  in set_serdes_refclk()
134 	 * Refclk1 = 125MHz  Refclk2 = 100MHz  in set_serdes_refclk()
137 		printf("Setting refclk1:125 and refclk2:100\n");  in set_serdes_refclk()
138 		i2c_reg_write(idt_addr, 0x10, 0x10);  in set_serdes_refclk()
147 		for (i = 0; i < NUM_IDT_REGS_156_25; i++)  in set_serdes_refclk()
148 			i2c_reg_write(idt_addr, idt_conf_156_25[i][0],  in set_serdes_refclk()
153 	 * Refclk1 = 100MHz  Refclk2 = 156.25MHz  in set_serdes_refclk()
157 		printf("Setting refclk1:100 and refclk2:156.25\n");  in set_serdes_refclk()
158 		for (i = 0; i < NUM_IDT_REGS_156_25; i++)  in set_serdes_refclk()
159 			i2c_reg_write(idt_addr, idt_conf_100_156_25[i][0],  in set_serdes_refclk()
169 		for (i = 0; i < NUM_IDT_REGS_156_25; i++)  in set_serdes_refclk()
170 			i2c_reg_write(idt_addr, idt_conf_125_156_25[i][0],  in set_serdes_refclk()
175 	 * Refclk1 = 156.25MHz  Refclk2 = 100MHz  in set_serdes_refclk()
179 		printf("Setting refclk1:156.25 and refclk2:100\n");  in set_serdes_refclk()
180 		for (i = 0; i < NUM_IDT_REGS_156_25; i++)  in set_serdes_refclk()
181 			i2c_reg_write(idt_addr, idt_conf_156_25_100[i][0],  in set_serdes_refclk()
191 		for (i = 0; i < NUM_IDT_REGS_156_25; i++)  in set_serdes_refclk()
192 			i2c_reg_write(idt_addr, idt_conf_156_25_125[i][0],  in set_serdes_refclk()
202 			return -1;  in set_serdes_refclk()
205 	return 0;  in set_serdes_refclk()