On Tue, Dec 23, 2025 at 5:42 PM Kane Chen <kane_chen@aspeedtech.com> wrote:
>
> From: Kane-Chen-AS <kane_chen@aspeedtech.com>
>
> Connect the PWM device to AST1700 model.
>
> Signed-off-by: Kane-Chen-AS <kane_chen@aspeedtech.com>
> Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Nabih Estefan <nabihestefan@google.com>
Tested-by: Nabih Estefan <nabihestefan@google.com>
> ---
> include/hw/arm/aspeed_ast1700.h | 2 ++
> hw/arm/aspeed_ast1700.c | 13 +++++++++++++
> 2 files changed, 15 insertions(+)
>
> diff --git a/include/hw/arm/aspeed_ast1700.h b/include/hw/arm/aspeed_ast1700.h
> index f43c0c5475..7292719dc2 100644
> --- a/include/hw/arm/aspeed_ast1700.h
> +++ b/include/hw/arm/aspeed_ast1700.h
> @@ -14,6 +14,7 @@
> #include "hw/gpio/aspeed_gpio.h"
> #include "hw/i2c/aspeed_i2c.h"
> #include "hw/misc/aspeed_ltpi.h"
> +#include "hw/misc/aspeed_pwm.h"
> #include "hw/ssi/aspeed_smc.h"
> #include "hw/watchdog/wdt_aspeed.h"
> #include "hw/char/serial-mm.h"
> @@ -39,6 +40,7 @@ struct AspeedAST1700SoCState {
> AspeedSCUState scu;
> AspeedGPIOState gpio;
> AspeedI2CState i2c;
> + AspeedPWMState pwm;
> AspeedWDTState wdt[AST1700_WDT_NUM];
> };
>
> diff --git a/hw/arm/aspeed_ast1700.c b/hw/arm/aspeed_ast1700.c
> index 9fb84dd159..5a2552aa25 100644
> --- a/hw/arm/aspeed_ast1700.c
> +++ b/hw/arm/aspeed_ast1700.c
> @@ -18,6 +18,7 @@
>
> enum {
> ASPEED_AST1700_DEV_SPI0,
> + ASPEED_AST1700_DEV_PWM,
> ASPEED_AST1700_DEV_SRAM,
> ASPEED_AST1700_DEV_ADC,
> ASPEED_AST1700_DEV_SCU,
> @@ -31,6 +32,7 @@ enum {
>
> static const hwaddr aspeed_ast1700_io_memmap[] = {
> [ASPEED_AST1700_DEV_SPI0] = 0x00030000,
> + [ASPEED_AST1700_DEV_PWM] = 0x000C0000,
> [ASPEED_AST1700_DEV_SRAM] = 0x00BC0000,
> [ASPEED_AST1700_DEV_ADC] = 0x00C00000,
> [ASPEED_AST1700_DEV_SCU] = 0x00C02000,
> @@ -124,6 +126,14 @@ static void aspeed_ast1700_realize(DeviceState *dev, Error **errp)
> aspeed_ast1700_io_memmap[ASPEED_AST1700_DEV_I2C],
> sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->i2c), 0));
>
> + /* PWM */
> + if (!sysbus_realize(SYS_BUS_DEVICE(&s->pwm), errp)) {
> + return;
> + }
> + memory_region_add_subregion(&s->iomem,
> + aspeed_ast1700_io_memmap[ASPEED_AST1700_DEV_PWM],
> + sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->pwm), 0));
> +
> /* LTPI controller */
> if (!sysbus_realize(SYS_BUS_DEVICE(&s->ltpi), errp)) {
> return;
> @@ -177,6 +187,9 @@ static void aspeed_ast1700_instance_init(Object *obj)
> object_initialize_child(obj, "ioexp-i2c[*]", &s->i2c,
> "aspeed.i2c-ast2700");
>
> + /* PWM */
> + object_initialize_child(obj, "pwm", &s->pwm, TYPE_ASPEED_PWM);
> +
> /* LTPI controller */
> object_initialize_child(obj, "ltpi-ctrl",
> &s->ltpi, TYPE_ASPEED_LTPI);
> --
> 2.43.0
>