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Tue, 2 Jun 2026 05:28:39 +0000 From: Jamin Lin To: =?iso-8859-1?Q?C=E9dric_Le_Goater?= , Peter Maydell , Steven Lee , Troy Lee , Kane Chen , Andrew Jeffery , Joel Stanley , "open list:ASPEED BMCs" , "open list:All patches CC here" CC: Jamin Lin , Troy Lee Subject: [PATCH v2 09/10] hw/arm/aspeed_ast1040_evb: Introduce onboard I2C device Thread-Topic: [PATCH v2 09/10] hw/arm/aspeed_ast1040_evb: Introduce onboard I2C device Thread-Index: AQHc8lCqSxHismjzOkG6W4XZ3+fb1Q== Date: Tue, 2 Jun 2026 05:28:39 +0000 Message-ID: <20260602052827.1535299-10-jamin_lin@aspeedtech.com> References: <20260602052827.1535299-1-jamin_lin@aspeedtech.com> In-Reply-To: <20260602052827.1535299-1-jamin_lin@aspeedtech.com> Accept-Language: zh-TW, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=aspeedtech.com; x-ms-publictraffictype: Email x-ms-traffictypediagnostic: TYZPR06MB4980:EE_|SI2PR06MB5411:EE_ x-ms-office365-filtering-correlation-id: ef3258de-170e-4b14-20ce-08dec067cd78 x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; 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envelope-from=jamin_lin@aspeedtech.com; helo=TYPPR03CU001.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-arm@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-arm-bounces+qemu-arm=archiver.kernel.org@nongnu.org Sender: qemu-arm-bounces+qemu-arm=archiver.kernel.org@nongnu.org Introduce onboard I2C device initialization for the AST1040=0A= EVB model.=0A= =0A= This change adds the initial onboard I2C device setup flow=0A= and instantiates a 24C08 SMBus EEPROM device connected to=0A= I2C bus 0, matching the current AST1040 EVB hardware design.=0A= =0A= Signed-off-by: Jamin Lin =0A= ---=0A= hw/arm/aspeed_ast1040_evb.c | 18 ++++++++++++++++++=0A= 1 file changed, 18 insertions(+)=0A= =0A= diff --git a/hw/arm/aspeed_ast1040_evb.c b/hw/arm/aspeed_ast1040_evb.c=0A= index 1d9b55247f..66f08ccbe6 100644=0A= --- a/hw/arm/aspeed_ast1040_evb.c=0A= +++ b/hw/arm/aspeed_ast1040_evb.c=0A= @@ -14,6 +14,7 @@=0A= #include "hw/arm/aspeed_soc.h"=0A= #include "hw/core/qdev-clock.h"=0A= #include "system/system.h"=0A= +#include "hw/i2c/smbus_eeprom.h"=0A= =0A= #define AST1040_INTERNAL_FLASH_SIZE (4 * MiB)=0A= /* Main SYSCLK frequency in Hz (400MHz) */=0A= @@ -38,12 +39,28 @@ static void aspeed_bic_machine_init(MachineState *machi= ne)=0A= aspeed_connect_serial_hds_to_uarts(bmc);=0A= qdev_realize(DEVICE(bmc->soc), NULL, &error_abort);=0A= =0A= + if (amc->i2c_init) {=0A= + amc->i2c_init(bmc);=0A= + }=0A= +=0A= armv7m_load_kernel(ARM_CPU(first_cpu),=0A= machine->kernel_filename,=0A= 0,=0A= AST1040_INTERNAL_FLASH_SIZE);=0A= }=0A= =0A= +static void ast1040_evb_i2c_init(AspeedMachineState *bmc)=0A= +{=0A= + AspeedSoCState *soc =3D bmc->soc;=0A= +=0A= + /* U10 24C08 connects to SDA/SCL Group 1 by default */=0A= + uint8_t *eeprom_buf =3D g_malloc0(32 * KiB);=0A= + smbus_eeprom_init_one(aspeed_i2c_get_bus(&soc->i2c, 0), 0x50, eeprom_b= uf);=0A= +=0A= + /* U11 LM75 connects to SDA/SCL Group 2 by default */=0A= + i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 1), "tmp105", 0x= 4d);=0A= +}=0A= +=0A= static void aspeed_machine_ast1040_evb_class_init(ObjectClass *oc,=0A= const void *data)=0A= {=0A= @@ -55,6 +72,7 @@ static void aspeed_machine_ast1040_evb_class_init(ObjectC= lass *oc,=0A= amc->hw_strap1 =3D 0;=0A= amc->hw_strap2 =3D 0;=0A= mc->init =3D aspeed_bic_machine_init;=0A= + amc->i2c_init =3D ast1040_evb_i2c_init;=0A= mc->default_ram_size =3D 0;=0A= amc->macs_mask =3D 0;=0A= amc->uart_default =3D ASPEED_DEV_UART12;=0A= -- =0A= 2.43.0=0A=