linux-kernel - Re: [PATCH net-next v7 02/15] net: driver: stmmac: Extend CSR calc support

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Message-ID: <Z04voJN9uj1Vefef@shell.armlinux.org.uk>
Date: Mon, 2 Dec 2024 22:07:28 +0000
From: "Russell King (Oracle)" <linux@...linux.org.uk>
To: jan.petrous@....nxp.com
Cc: Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Jose Abreu <joabreu@...opsys.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Vinod Koul <vkoul@...nel.org>,
	Richard Cochran <richardcochran@...il.com>,
	Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Emil Renner Berthing <kernel@...il.dk>,
	Minda Chen <minda.chen@...rfivetech.com>,
	Nicolas Ferre <nicolas.ferre@...rochip.com>,
	Claudiu Beznea <claudiu.beznea@...on.dev>,
	Iyappan Subramanian <iyappan@...amperecomputing.com>,
	Keyur Chudgar <keyur@...amperecomputing.com>,
	Quan Nguyen <quan@...amperecomputing.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Giuseppe Cavallaro <peppe.cavallaro@...com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, linux-arm-msm@...r.kernel.org,
	imx@...ts.linux.dev, devicetree@...r.kernel.org,
	NXP S32 Linux Team <s32@....com>, 0x1207@...il.com,
	fancer.lancer@...il.com, Jacob Keller <jacob.e.keller@...el.com>
Subject: Re: [PATCH net-next v7 02/15] net: driver: stmmac: Extend CSR calc
 support

Hi,

As per patch 1, no need for "driver:" in the subject line.

Thanks.

On Mon, Dec 02, 2024 at 11:03:41PM +0100, Jan Petrous via B4 Relay wrote:
> From: "Jan Petrous (OSS)" <jan.petrous@....nxp.com>
> 
> Add support for CSR clock range up to 800 MHz.
> 
> Reviewed-by: Jacob Keller <jacob.e.keller@...el.com>
> Reviewed-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
> Signed-off-by: Jan Petrous (OSS) <jan.petrous@....nxp.com>
> ---
>  drivers/net/ethernet/stmicro/stmmac/common.h      | 2 ++
>  drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 4 ++++
>  include/linux/stmmac.h                            | 2 ++
>  3 files changed, 8 insertions(+)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
> index 1367fa5c9b8e..70d601f45481 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/common.h
> +++ b/drivers/net/ethernet/stmicro/stmmac/common.h
> @@ -257,6 +257,8 @@ struct stmmac_safety_stats {
>  #define CSR_F_150M	150000000
>  #define CSR_F_250M	250000000
>  #define CSR_F_300M	300000000
> +#define CSR_F_500M	500000000
> +#define CSR_F_800M	800000000
>  
>  #define	MAC_CSR_H_FRQ_MASK	0x20
>  
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> index 9b262cdad60b..3cb7ad6ccc4e 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> @@ -325,6 +325,10 @@ static void stmmac_clk_csr_set(struct stmmac_priv *priv)
>  			priv->clk_csr = STMMAC_CSR_150_250M;
>  		else if ((clk_rate >= CSR_F_250M) && (clk_rate <= CSR_F_300M))
>  			priv->clk_csr = STMMAC_CSR_250_300M;
> +		else if ((clk_rate >= CSR_F_300M) && (clk_rate < CSR_F_500M))
> +			priv->clk_csr = STMMAC_CSR_300_500M;
> +		else if ((clk_rate >= CSR_F_500M) && (clk_rate < CSR_F_800M))
> +			priv->clk_csr = STMMAC_CSR_500_800M;
>  	}
>  
>  	if (priv->plat->flags & STMMAC_FLAG_HAS_SUN8I) {
> diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h
> index 75cbfb576358..865d0fe26f98 100644
> --- a/include/linux/stmmac.h
> +++ b/include/linux/stmmac.h
> @@ -34,6 +34,8 @@
>  #define	STMMAC_CSR_35_60M	0x3	/* MDC = clk_scr_i/26 */
>  #define	STMMAC_CSR_150_250M	0x4	/* MDC = clk_scr_i/102 */
>  #define	STMMAC_CSR_250_300M	0x5	/* MDC = clk_scr_i/124 */
> +#define	STMMAC_CSR_300_500M	0x6	/* MDC = clk_scr_i/204 */
> +#define	STMMAC_CSR_500_800M	0x7	/* MDC = clk_scr_i/324 */
>  
>  /* MTL algorithms identifiers */
>  #define MTL_TX_ALGORITHM_WRR	0x0
> 
> -- 
> 2.47.0
> 
> 
> 
> 

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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