From 2cf6cb500c78ee2256023d510b4a54013b861444 Mon Sep 17 00:00:00 2001 From: Cédric Le Goater Date: Fri, 2 Jun 2017 11:51:49 +0100 Subject: aspeed: add some I2C devices to the Aspeed machines Let's add an RTC to the palmetto BMC and a LM75 temperature sensor to the AST2500 EVB to start with. Signed-off-by: Cédric Le Goater Message-id: 1494827476-1487-5-git-send-email-clg@kaod.org Signed-off-by: Peter Maydell Reviewed-by: Peter Maydell --- hw/arm/aspeed.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'hw/arm/aspeed.c') diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c index 283c038814..e824ea87a9 100644 --- a/hw/arm/aspeed.c +++ b/hw/arm/aspeed.c @@ -39,6 +39,7 @@ typedef struct AspeedBoardConfig { const char *fmc_model; const char *spi_model; uint32_t num_cs; + void (*i2c_init)(AspeedBoardState *bmc); } AspeedBoardConfig; enum { @@ -82,6 +83,9 @@ enum { SCU_AST2500_HW_STRAP_ACPI_ENABLE | \ SCU_HW_STRAP_SPI_MODE(SCU_HW_STRAP_SPI_MASTER)) +static void palmetto_bmc_i2c_init(AspeedBoardState *bmc); +static void ast2500_evb_i2c_init(AspeedBoardState *bmc); + static const AspeedBoardConfig aspeed_boards[] = { [PALMETTO_BMC] = { .soc_name = "ast2400-a1", @@ -89,6 +93,7 @@ static const AspeedBoardConfig aspeed_boards[] = { .fmc_model = "n25q256a", .spi_model = "mx25l25635e", .num_cs = 1, + .i2c_init = palmetto_bmc_i2c_init, }, [AST2500_EVB] = { .soc_name = "ast2500-a1", @@ -96,6 +101,7 @@ static const AspeedBoardConfig aspeed_boards[] = { .fmc_model = "n25q256a", .spi_model = "mx25l25635e", .num_cs = 1, + .i2c_init = ast2500_evb_i2c_init, }, [ROMULUS_BMC] = { .soc_name = "ast2500-a1", @@ -223,9 +229,22 @@ static void aspeed_board_init(MachineState *machine, aspeed_board_binfo.ram_size = ram_size; aspeed_board_binfo.loader_start = sc->info->sdram_base; + if (cfg->i2c_init) { + cfg->i2c_init(bmc); + } + arm_load_kernel(ARM_CPU(first_cpu), &aspeed_board_binfo); } +static void palmetto_bmc_i2c_init(AspeedBoardState *bmc) +{ + AspeedSoCState *soc = &bmc->soc; + + /* The palmetto platform expects a ds3231 RTC but a ds1338 is + * enough to provide basic RTC features. Alarms will be missing */ + i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 0), "ds1338", 0x68); +} + static void palmetto_bmc_init(MachineState *machine) { aspeed_board_init(machine, &aspeed_boards[PALMETTO_BMC]); @@ -250,6 +269,14 @@ static const TypeInfo palmetto_bmc_type = { .class_init = palmetto_bmc_class_init, }; +static void ast2500_evb_i2c_init(AspeedBoardState *bmc) +{ + AspeedSoCState *soc = &bmc->soc; + + /* The AST2500 EVB expects a LM75 but a TMP105 is compatible */ + i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 7), "tmp105", 0x4d); +} + static void ast2500_evb_init(MachineState *machine) { aspeed_board_init(machine, &aspeed_boards[AST2500_EVB]); -- cgit v1.2.3-55-g7522