Introduce onboard I2C device initialization for the AST1040 EVB model. This change adds the initial onboard I2C device setup flow and instantiates a 24C08 SMBus EEPROM device connected to I2C bus 0, matching the current AST1040 EVB hardware design.
Signed-off-by: Jamin Lin <[email protected]> --- hw/arm/aspeed_ast1040_evb.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/hw/arm/aspeed_ast1040_evb.c b/hw/arm/aspeed_ast1040_evb.c index 1d9b55247f..392b0d5159 100644 --- a/hw/arm/aspeed_ast1040_evb.c +++ b/hw/arm/aspeed_ast1040_evb.c @@ -14,6 +14,7 @@ #include "hw/arm/aspeed_soc.h" #include "hw/core/qdev-clock.h" #include "system/system.h" +#include "hw/i2c/smbus_eeprom.h" #define AST1040_INTERNAL_FLASH_SIZE (4 * MiB) /* Main SYSCLK frequency in Hz (400MHz) */ @@ -38,12 +39,28 @@ static void aspeed_bic_machine_init(MachineState *machine) aspeed_connect_serial_hds_to_uarts(bmc); qdev_realize(DEVICE(bmc->soc), NULL, &error_abort); + if (amc->i2c_init) { + amc->i2c_init(bmc); + } + armv7m_load_kernel(ARM_CPU(first_cpu), machine->kernel_filename, 0, AST1040_INTERNAL_FLASH_SIZE); } +static void ast1040_evb_i2c_init(AspeedMachineState *bmc) +{ + AspeedSoCState *soc = bmc->soc; + + /* U10 24C08 connects to SDA/SCL Group 1 by default */ + uint8_t *eeprom_buf = g_malloc0(32 * 1024); + smbus_eeprom_init_one(aspeed_i2c_get_bus(&soc->i2c, 0), 0x50, eeprom_buf); + + /* U11 LM75 connects to SDA/SCL Group 2 by default */ + i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 1), "tmp105", 0x4d); +} + static void aspeed_machine_ast1040_evb_class_init(ObjectClass *oc, const void *data) { @@ -55,6 +72,7 @@ static void aspeed_machine_ast1040_evb_class_init(ObjectClass *oc, amc->hw_strap1 = 0; amc->hw_strap2 = 0; mc->init = aspeed_bic_machine_init; + amc->i2c_init = ast1040_evb_i2c_init; mc->default_ram_size = 0; amc->macs_mask = 0; amc->uart_default = ASPEED_DEV_UART12; -- 2.43.0
