On Fri, Sep 24, 2021 at 03:37:08PM +0530, Sai Krishna Potthuri wrote:
> Add OSPI Mux selection API support to select the AXI interface to OSPI.
>
> Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xxxxxxxxxx>
> ---
> drivers/firmware/xilinx/zynqmp.c | 17 +++++++++++++++++
> include/linux/firmware/xlnx-zynqmp.h | 12 ++++++++++++
> 2 files changed, 29 insertions(+)
>
> diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
> index 15b138326ecc..43c3b5a9eef7 100644
> --- a/drivers/firmware/xilinx/zynqmp.c
> +++ b/drivers/firmware/xilinx/zynqmp.c
> @@ -647,6 +647,23 @@ int zynqmp_pm_sd_dll_reset(u32 node_id, u32 type)
> }
> EXPORT_SYMBOL_GPL(zynqmp_pm_sd_dll_reset);
>
> +/**
> + * zynqmp_pm_ospi_mux_select() - OSPI Mux selection
> + *
> + * @dev_id: Device Id of the OSPI device.
> + * @select: OSPI Mux select value.
> + *
> + * This function select the OSPI Mux.
> + *
> + * Return: Returns status, either success or error+reason
> + */
> +int zynqmp_pm_ospi_mux_select(u32 dev_id, u32 select)
> +{
> + return zynqmp_pm_invoke_fn(PM_IOCTL, dev_id, IOCTL_OSPI_MUX_SELECT,
> + select, 0, NULL);
> +}
> +EXPORT_SYMBOL_GPL(zynqmp_pm_ospi_mux_select);
> +
> /**
> * zynqmp_pm_write_ggs() - PM API for writing global general storage (ggs)
> * @index: GGS register index
> diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
> index 9d1a5c175065..6979a79f553a 100644
> --- a/include/linux/firmware/xlnx-zynqmp.h
> +++ b/include/linux/firmware/xlnx-zynqmp.h
> @@ -119,6 +119,7 @@ enum pm_ioctl_id {
> IOCTL_READ_PGGS = 15,
> /* Set healthy bit value */
> IOCTL_SET_BOOT_HEALTH_STATUS = 17,
> + IOCTL_OSPI_MUX_SELECT = 21,
Why the gap? What are the commands in the middle for?
thanks,
greg k-h
