linux-kernel - Re: [RFC PATCH net-next 07/12] power: reset: Add lan966x power reset driver

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Date:   Mon, 20 Sep 2021 14:15:38 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Horatiu Vultur <horatiu.vultur@...rochip.com>
Cc:     davem@...emloft.net, kuba@...nel.org, robh+dt@...nel.org,
        linux@...linux.org.uk, f.fainelli@...il.com,
        alexandre.belloni@...tlin.com, vladimir.oltean@....com,
        UNGLinuxDriver@...rochip.com, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-phy@...ts.infradead.org, linux-pm@...r.kernel.org
Subject: Re: [RFC PATCH net-next 07/12] power: reset: Add lan966x power reset
 driver

> +struct lan966x_reset_context {
> +	struct regmap *gcb_ctrl;
> +	struct regmap *cpu_ctrl;
> +	struct notifier_block restart_handler;
> +};
> +
> +#define PROTECT_REG    0x88
> +#define PROTECT_BIT    BIT(5)
> +#define SOFT_RESET_REG 0x00
> +#define SOFT_RESET_BIT BIT(1)
> +
> +static int lan966x_restart_handle(struct notifier_block *this,
> +				  unsigned long mode, void *cmd)
> +{
> +	struct lan966x_reset_context *ctx = container_of(this, struct lan966x_reset_context,
> +							restart_handler);
> +
> +	/* Make sure the core is not protected from reset */
> +	regmap_update_bits(ctx->cpu_ctrl, PROTECT_REG, PROTECT_BIT, 0);

This all looks familiar...

Maybe yet another compatible added to reset-microchip-sparx5.c ?

      Andrew