27  * sun4i_get_pll1_factors() - calculates n, k, m, p factors for PLL1
29  * rate = (parent_rate * n * (k + 1) >> p) / (m + 1);
44 	/* k is 1 only on these cases */  in sun4i_get_pll1_factors()
47 		req->k = 1;  in sun4i_get_pll1_factors()
49 		req->k = 0;  in sun4i_get_pll1_factors()
55 	/* p will be 2 for divs between 10 - 20 and odd divs under 32 */  in sun4i_get_pll1_factors()
56 	else if (div < 20 || (div < 32 && (div & 1)))  in sun4i_get_pll1_factors()
59 	/* p will be 1 for even divs under 32, divs under 40 and odd pairs  in sun4i_get_pll1_factors()
68 	/* calculate a suitable n based on k and p */  in sun4i_get_pll1_factors()
70 	div /= (req->k + 1);  in sun4i_get_pll1_factors()
75  * sun6i_a31_get_pll1_factors() - calculates n, k and m factors for PLL1
77  * rate = parent_rate * (n + 1) * (k + 1) / (m + 1);
103 	/* If the frequency is a multiple of 32 MHz, k is always 3 */  in sun6i_a31_get_pll1_factors()
104 	if (!(freq_mhz % 32))  in sun6i_a31_get_pll1_factors()
105 		req->k = 3;  in sun6i_a31_get_pll1_factors()
106 	/* If the frequency is a multiple of 9 MHz, k is always 2 */  in sun6i_a31_get_pll1_factors()
108 		req->k = 2;  in sun6i_a31_get_pll1_factors()
109 	/* If the frequency is a multiple of 8 MHz, k is always 1 */  in sun6i_a31_get_pll1_factors()
111 		req->k = 1;  in sun6i_a31_get_pll1_factors()
112 	/* Otherwise, we don't use the k factor */  in sun6i_a31_get_pll1_factors()
114 		req->k = 0;  in sun6i_a31_get_pll1_factors()
121 	 * generate (with n = 0, k = 0, m = 3), so every other frequency  in sun6i_a31_get_pll1_factors()
137 	req->n = freq_mhz * (req->m + 1) / ((req->k + 1) * parent_freq_mhz)  in sun6i_a31_get_pll1_factors()
151  * sun8i_a23_get_pll1_factors() - calculates n, k, m, p factors for PLL1
153  * rate = (parent_rate * (n + 1) * (k + 1) >> p) / (m + 1);
168 	/* k is 1 only on these cases */  in sun8i_a23_get_pll1_factors()
171 		req->k = 1;  in sun8i_a23_get_pll1_factors()
173 		req->k = 0;  in sun8i_a23_get_pll1_factors()
175 	/* p will be 2 for divs under 20 and odd divs under 32 */  in sun8i_a23_get_pll1_factors()
176 	if (div < 20 || (div < 32 && (div & 1)))  in sun8i_a23_get_pll1_factors()
179 	/* p will be 1 for even divs under 32, divs under 40 and odd pairs  in sun8i_a23_get_pll1_factors()
188 	/* calculate a suitable n based on k and p */  in sun8i_a23_get_pll1_factors()
190 	div /= (req->k + 1);  in sun8i_a23_get_pll1_factors()
195  * sun4i_get_pll5_factors() - calculates n, k factors for PLL5
197  * rate = parent_rate * n * (k + 1)
210 		req->k = 0;  in sun4i_get_pll5_factors()
212 		req->k = 1;  in sun4i_get_pll5_factors()
214 		req->k = 2;  in sun4i_get_pll5_factors()
216 		req->k = 3;  in sun4i_get_pll5_factors()
218 	req->n = DIV_ROUND_UP(div, (req->k + 1));  in sun4i_get_pll5_factors()
222  * sun6i_a31_get_pll6_factors() - calculates n, k factors for A31 PLL6x2
224  * rate = parent_rate * (n + 1) * (k + 1)
236 	req->k = div / 32;  in sun6i_a31_get_pll6_factors()
237 	if (req->k > 3)  in sun6i_a31_get_pll6_factors()
238 		req->k = 3;  in sun6i_a31_get_pll6_factors()
240 	req->n = DIV_ROUND_UP(div, (req->k + 1)) - 1;  in sun6i_a31_get_pll6_factors()
258 	 * user manual says valid speed is 8k ~ 276M, but tests show it  in sun5i_a13_get_ahb_factors()
356 	if (div > 32)  in sun4i_get_apb1_factors()
395 	if (div < 32)  in sun7i_a20_get_out_factors()
397 	else if (div / 2 < 32)  in sun7i_a20_get_out_factors()
399 	else if (div / 4 < 32)  in sun7i_a20_get_out_factors()