1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 3 #include <amdblocks/aoac.h> 4 #include <delay.h> 5 #include <soc/aoac_defs.h> 6 #include <soc/southbridge.h> 7 #include <types.h> 8 9 /* 10 * Table of devices that need their AOAC registers enabled and waited 11 * upon (usually about .55 milliseconds). Instead of individual delays 12 * waiting for each device to become available, a single delay will be 13 * executed. 14 */ 15 static const unsigned int aoac_devs[] = { 16 FCH_AOAC_DEV_UART0 + CONFIG_UART_FOR_CONSOLE * 2, 17 FCH_AOAC_DEV_AMBA, 18 FCH_AOAC_DEV_I2C0, 19 FCH_AOAC_DEV_I2C1, 20 FCH_AOAC_DEV_I2C2, 21 FCH_AOAC_DEV_I2C3, 22 }; 23 wait_for_aoac_enabled(unsigned int dev)24void wait_for_aoac_enabled(unsigned int dev) 25 { 26 while (!is_aoac_device_enabled(dev)) 27 udelay(100); 28 } 29 enable_aoac_devices(void)30void enable_aoac_devices(void) 31 { 32 bool status; 33 int i; 34 35 for (i = 0; i < ARRAY_SIZE(aoac_devs); i++) 36 power_on_aoac_device(aoac_devs[i]); 37 38 /* Wait for AOAC devices to indicate power and clock OK */ 39 do { 40 udelay(100); 41 status = true; 42 for (i = 0; i < ARRAY_SIZE(aoac_devs); i++) 43 status &= is_aoac_device_enabled(aoac_devs[i]); 44 } while (!status); 45 } 46