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Wed, 3 Jun 2026 04:00:38 +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 v3 08/10] hw/arm/aspeed_ast1040: Introduce I2C support Thread-Topic: [PATCH v3 08/10] hw/arm/aspeed_ast1040: Introduce I2C support Thread-Index: AQHc8w2J6Y+lbiPJ7UWuQLa/rqiBuA== Date: Wed, 3 Jun 2026 04:00:38 +0000 Message-ID: <20260603040027.938816-9-jamin_lin@aspeedtech.com> References: <20260603040027.938816-1-jamin_lin@aspeedtech.com> In-Reply-To: <20260603040027.938816-1-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_|KL1PR06MB6623:EE_ x-ms-office365-filtering-correlation-id: ef583521-dfe4-44a8-62d8-08dec124ac0c 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=OS8PR02CU002.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, SPF_HELO_NONE=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 I2C controller support for the AST1040 SoC model.=0A= =0A= The I2C model type is selected from the SoC type name, allowing the AST1040= =0A= SoC to use the corresponding aspeed.i2c-ast1040 model.=0A= =0A= The I2C controller is mapped at 0x74C0F000 and uses IRQs=0A= 64 - 77, with one IRQ assigned per I2C bus.=0A= =0A= The controller DRAM link is connected to SRAM1 (HyperRAM)=0A= for DMA support.=0A= =0A= Signed-off-by: Jamin Lin =0A= ---=0A= hw/arm/aspeed_ast1040.c | 16 ++++++++++++++++=0A= 1 file changed, 16 insertions(+)=0A= =0A= diff --git a/hw/arm/aspeed_ast1040.c b/hw/arm/aspeed_ast1040.c=0A= index 77211ce1f3..6d1cb9b102 100644=0A= --- a/hw/arm/aspeed_ast1040.c=0A= +++ b/hw/arm/aspeed_ast1040.c=0A= @@ -117,6 +117,7 @@ static void aspeed_soc_ast1040_init(Object *obj)=0A= object_initialize_child(obj, "sgpio[*]", &s->sgpiom[i],=0A= "aspeed.sgpio-ast2700");=0A= }=0A= + object_initialize_child(obj, "i2c", &s->i2c, TYPE_ASPEED_1040_I2C);=0A= =0A= object_initialize_child(obj, "pwm", &s->pwm, TYPE_UNIMPLEMENTED_DEVICE= );=0A= object_initialize_child(obj, "espi", &s->espi, TYPE_UNIMPLEMENTED_DEVI= CE);=0A= @@ -233,6 +234,21 @@ static void aspeed_soc_ast1040_realize(DeviceState *de= v_soc, Error **errp)=0A= aspeed_soc_ast1040_get_irq(s, ASPEED_DEV_SGPIOM0 + = i));=0A= }=0A= =0A= + /* I2C */=0A= + object_property_set_link(OBJECT(&s->i2c), "dram", OBJECT(&s->sram[1]),= =0A= + &error_abort);=0A= + if (!sysbus_realize(SYS_BUS_DEVICE(&s->i2c), errp)) {=0A= + return;=0A= + }=0A= + aspeed_mmio_map(s->memory, SYS_BUS_DEVICE(&s->i2c), 0,=0A= + sc->memmap[ASPEED_DEV_I2C]);=0A= + for (i =3D 0; i < ASPEED_I2C_GET_CLASS(&s->i2c)->num_busses; i++) {=0A= + qemu_irq irq =3D qdev_get_gpio_in(DEVICE(&a->armv7m),=0A= + sc->irqmap[ASPEED_DEV_I2C] + i);= =0A= + /* The AST1040 I2C controller has one IRQ per bus. */=0A= + sysbus_connect_irq(SYS_BUS_DEVICE(&s->i2c.busses[i]), 0, irq);=0A= + }=0A= +=0A= /* Unimplemented peripherals */=0A= aspeed_mmio_map_unimplemented(s->memory, SYS_BUS_DEVICE(&s->pwm),=0A= "aspeed.pwm",=0A= -- =0A= 2.43.0=0A=