netdev - Re: [PATCH net-next 3/6] net: stmmac: intel-plat: use dwmac_set_tx_clk

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Date: Thu, 14 Sep 2023 15:06:59 +0300
From: Serge Semin <fancer.lancer@...il.com>
To: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
Cc: Alexandre Torgue <alexandre.torgue@...s.st.com>, 
	Jose Abreu <joabreu@...opsys.com>, Alexei Starovoitov <ast@...nel.org>, bpf@...r.kernel.org, 
	Daniel Borkmann <daniel@...earbox.net>, "David S. Miller" <davem@...emloft.net>, 
	Emil Renner Berthing <kernel@...il.dk>, Eric Dumazet <edumazet@...gle.com>, 
	Fabio Estevam <festevam@...il.com>, Jakub Kicinski <kuba@...nel.org>, 
	Jesper Dangaard Brouer <hawk@...nel.org>, John Fastabend <john.fastabend@...il.com>, 
	linux-arm-kernel@...ts.infradead.org, linux-stm32@...md-mailman.stormreply.com, 
	Maxime Coquelin <mcoquelin.stm32@...il.com>, netdev@...r.kernel.org, NXP Linux Team <linux-imx@....com>, 
	Paolo Abeni <pabeni@...hat.com>, Pengutronix Kernel Team <kernel@...gutronix.de>, 
	Samin Guo <samin.guo@...rfivetech.com>, Sascha Hauer <s.hauer@...gutronix.de>, 
	Shawn Guo <shawnguo@...nel.org>
Subject: Re: [PATCH net-next 3/6] net: stmmac: intel-plat: use
 dwmac_set_tx_clk_gmii()

On Mon, Sep 11, 2023 at 04:29:21PM +0100, Russell King (Oracle) wrote:
> Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
> ---
>  .../stmicro/stmmac/dwmac-intel-plat.c         | 35 +++++--------------
>  1 file changed, 9 insertions(+), 26 deletions(-)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c
> index d352a14f9d48..8cc22f11072e 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c
> @@ -14,6 +14,7 @@
>  #include "dwmac4.h"
>  #include "stmmac.h"
>  #include "stmmac_platform.h"
> +#include "stmmac_plat_lib.h"
>  
>  struct intel_dwmac {
>  	struct device *dev;
> @@ -31,32 +32,14 @@ struct intel_dwmac_data {
>  static void kmb_eth_fix_mac_speed(void *priv, unsigned int speed, unsigned int mode)
>  {
>  	struct intel_dwmac *dwmac = priv;
> -	unsigned long rate;
> -	int ret;
> -
> -	rate = clk_get_rate(dwmac->tx_clk);
> -
> -	switch (speed) {
> -	case SPEED_1000:
> -		rate = 125000000;
> -		break;
> -
> -	case SPEED_100:
> -		rate = 25000000;
> -		break;
> -
> -	case SPEED_10:
> -		rate = 2500000;
> -		break;
> -
> -	default:
> -		dev_err(dwmac->dev, "Invalid speed\n");
> -		break;
> -	}
> -
> -	ret = clk_set_rate(dwmac->tx_clk, rate);
> -	if (ret)
> -		dev_err(dwmac->dev, "Failed to configure tx clock rate\n");
> +	int err;
> +
> +	err = dwmac_set_tx_clk_gmii(dwmac->tx_clk, speed);
> +	if (err == -ENOTSUPP)

> +		dev_err(dwmac->dev, "invalid speed %dMbps\n", speed);

'%u'?

> +	else if (err)

> +		dev_err(dwmac->dev, "failed to set tx rate for speed %dMbps: %pe\n",

ditto

-Serge(y)

> +			speed, ERR_PTR(err));
>  }
>  
>  static const struct intel_dwmac_data kmb_data = {
> -- 
> 2.30.2
> 
>