netdev - Re: [net-next v2 3/7] net: ftgmac100: Add reset toggling for Aspeed SOCs

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Message-ID: <bcb86fdbdc7be8f96a451df2d8e479e123ad8924.camel@pengutronix.de>
Date: Mon, 18 Nov 2024 11:03:16 +0100
From: Philipp Zabel <p.zabel@...gutronix.de>
To: Jacky Chou <jacky_chou@...eedtech.com>, andrew+netdev@...n.ch, 
 davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
 pabeni@...hat.com,  robh@...nel.org, krzk+dt@...nel.org,
 conor+dt@...nel.org, netdev@...r.kernel.org,  devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [net-next v2 3/7] net: ftgmac100: Add reset toggling for Aspeed
 SOCs

On Mo, 2024-11-18 at 14:02 +0800, Jacky Chou wrote:
> Toggle the SCU reset before hardware initialization.
> 
> Signed-off-by: Jacky Chou <jacky_chou@...eedtech.com>
> ---
>  drivers/net/ethernet/faraday/ftgmac100.c | 21 +++++++++++++++++++++
>  1 file changed, 21 insertions(+)
> 
> diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c
> index 17ec35e75a65..cae23b712a6d 100644
> --- a/drivers/net/ethernet/faraday/ftgmac100.c
> +++ b/drivers/net/ethernet/faraday/ftgmac100.c
> @@ -9,6 +9,7 @@
>  #define pr_fmt(fmt)	KBUILD_MODNAME ": " fmt
>  
>  #include <linux/clk.h>
> +#include <linux/reset.h>
>  #include <linux/dma-mapping.h>
>  #include <linux/etherdevice.h>
>  #include <linux/ethtool.h>
> @@ -98,6 +99,7 @@ struct ftgmac100 {
>  	struct work_struct reset_task;
>  	struct mii_bus *mii_bus;
>  	struct clk *clk;
> +	struct reset_control *rst;
>  
>  	/* AST2500/AST2600 RMII ref clock gate */
>  	struct clk *rclk;
> @@ -1969,10 +1971,29 @@ static int ftgmac100_probe(struct platform_device *pdev)
>  	}
>  
>  	if (priv->is_aspeed) {
> +		struct reset_control *rst;
> +
>  		err = ftgmac100_setup_clk(priv);
>  		if (err)
>  			goto err_phy_connect;
>  
> +		rst = devm_reset_control_get_optional(priv->dev, NULL);

Please use devm_reset_control_get_optional_exclusive() directly.


regards
Philipp