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

[Russell King (Oracle)]

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 at oss.nxp.com>
> 
> Add support for CSR clock range up to 800 MHz.
> 
> Reviewed-by: Jacob Keller <jacob.e.keller at intel.com>
> Reviewed-by: Russell King (Oracle) <rmk+kernel at armlinux.org.uk>
> Signed-off-by: Jan Petrous (OSS) <jan.petrous at oss.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
> 
> 
> 
> 

-- 
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