[PATCH] power: zynqmp: Add power domain driver for ZynqMP
Jerry Van Baren
gvb.uboot at gmail.com
Wed Jan 19 14:47:27 CET 2022
Trivial English correction.
On Wed, Jan 19, 2022 at 6:04 AM Michal Simek <michal.simek at xilinx.com>
wrote:
> Driver should be enabled by CONFIG_POWER_DOMAIN=y and
> CONFIG_ZYNQMP_POWER_DOMAIN=y. Power domain driver doesn't have own DT node
> but it uses zynqmp firmware DT node that's why there is a need to bind
> driver when firmware node is found.
>
> Driver itself is simple. It is sending pmufw config object overlay for
> enabling access to device which is done in ...domain_request().
> In ...domain_on() capabilities are passed and node is requested.
> This should be bare minimum of required to get power domain driver working.
>
> Signed-off-by: Michal Simek <michal.simek at xilinx.com>
> ---
>
[snip]
> +static int zynqmp_firmware_bind(struct udevice *dev)
> +{
> + int ret;
> + struct udevice *child;
> +
> + if (IS_ENABLED(CONFIG_ZYNQMP_POWER_DOMAIN)) {
> + ret = device_bind_driver_to_node(dev,
> "zynqmp_power_domain",
> + "zynqmp_power_domain",
> + dev_ofnode(dev), &child);
> + if (ret)
> + printf("zynqmp power domain driver is not
> binded\n");
>
s/binded/bound/
> + }
> +
> + return dm_scan_fdt_dev(dev);
> +}
> +
>
[snip]
gvb
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