[PATCH v3 2/2] firmware: samsung: acpm: add Exynos850 support

[Peter Griffin]

On Tue, 29 Sept 2026 at 03:11, Alexey Klimov <alexey.klimov at linaro.org> wrote:
>
> The Exynos850 SoC contains an APM co-processor. Communication
> with this hardware block is established using the ACPM protocol,
> which handles IPC messages for clocks, power, thermal management,
> and PMIC control.
>
> Add the "samsung,exynos850-acpm-ipc" compatible string along with
> its associated match data. This includes the specific initialisation
> data base offset (which differs from the GS101 offset) and the
> "exynos850-acpm-clk" device name required to properly instantiate
> the clock provider.
>
> Reviewed-by: Tudor Ambarus <tudor.ambarus at linaro.org>
> Signed-off-by: Alexey Klimov <alexey.klimov at linaro.org>
> ---

Reviewed-by: Peter Griffin <peter.griffin at linaro.org>

>  drivers/firmware/samsung/exynos-acpm.c | 10 ++++++++++
>  1 file changed, 10 insertions(+)
>
> diff --git a/drivers/firmware/samsung/exynos-acpm.c b/drivers/firmware/samsung/exynos-acpm.c
> index 942a2e9f02f5..5a16665e941b 100644
> --- a/drivers/firmware/samsung/exynos-acpm.c
> +++ b/drivers/firmware/samsung/exynos-acpm.c
> @@ -39,6 +39,7 @@
>  #define ACPM_POLL_TIMEOUT_US           (100 * USEC_PER_MSEC)
>  #define ACPM_TX_TIMEOUT_US             500000
>
> +#define ACPM_EXYNOS850_INITDATA_BASE   0x7000
>  #define ACPM_GS101_INITDATA_BASE       0xa000
>
>  /**
> @@ -876,6 +877,11 @@ struct acpm_handle *devm_acpm_get_by_phandle(struct device *dev)
>  }
>  EXPORT_SYMBOL_GPL(devm_acpm_get_by_phandle);
>
> +static const struct acpm_match_data acpm_exynos850 = {
> +       .initdata_base = ACPM_EXYNOS850_INITDATA_BASE,
> +       .acpm_clk_dev_name = "exynos850-acpm-clk",
> +};
> +
>  static const struct acpm_match_data acpm_gs101 = {
>         .initdata_base = ACPM_GS101_INITDATA_BASE,
>         .acpm_clk_dev_name = "gs101-acpm-clk",
> @@ -886,6 +892,10 @@ static const struct of_device_id acpm_match[] = {
>                 .compatible = "google,gs101-acpm-ipc",
>                 .data = &acpm_gs101,
>         },
> +       {
> +               .compatible = "samsung,exynos850-acpm-ipc",
> +               .data = &acpm_exynos850,
> +       },
>         {},
>  };
>  MODULE_DEVICE_TABLE(of, acpm_match);
>
> --
> 2.51.0
>