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Message-ID: <c17845bd-2b32-883a-4b59-a684ee8dd9b9@microchip.com>
Date:   Wed, 15 Sep 2021 07:45:14 +0000
From:   <Nicolas.Ferre@...rochip.com>
To:     <Claudiu.Beznea@...rochip.com>, <davem@...emloft.net>,
        <kuba@...nel.org>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] net: macb: add support for mii on rgmii

On 15/09/2021 at 08:47, Claudiu Beznea wrote:
> Cadence IP has option to enable MII support on RGMII interface. This
> could be selected though bit 28 of network control register. This option
> is not enabled on all the IP versions thus add a software capability to
> be selected by the proper implementation of this IP.
> 
> Signed-off-by: Claudiu Beznea <claudiu.beznea@...rochip.com>

Fine:
Acked-by: Nicolas Ferre <nicolas.ferre@...rochip.com>

Thanks Claudiu, best regards,
   Nicolas

> ---
>   drivers/net/ethernet/cadence/macb.h      | 3 +++
>   drivers/net/ethernet/cadence/macb_main.c | 3 +++
>   2 files changed, 6 insertions(+)
> 
> diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h
> index c33e98bfa5e8..5620b97b3482 100644
> --- a/drivers/net/ethernet/cadence/macb.h
> +++ b/drivers/net/ethernet/cadence/macb.h
> @@ -246,6 +246,8 @@
>   #define MACB_SRTSM_OFFSET	15 /* Store Receive Timestamp to Memory */
>   #define MACB_OSSMODE_OFFSET	24 /* Enable One Step Synchro Mode */
>   #define MACB_OSSMODE_SIZE	1
> +#define MACB_MIIONRGMII_OFFSET	28 /* MII Usage on RGMII Interface */
> +#define MACB_MIIONRGMII_SIZE	1
>   
>   /* Bitfields in NCFGR */
>   #define MACB_SPD_OFFSET		0 /* Speed */
> @@ -713,6 +715,7 @@
>   #define MACB_CAPS_GEM_HAS_PTP			0x00000040
>   #define MACB_CAPS_BD_RD_PREFETCH		0x00000080
>   #define MACB_CAPS_NEEDS_RSTONUBR		0x00000100
> +#define MACB_CAPS_MIIONRGMII			0x00000200
>   #define MACB_CAPS_CLK_HW_CHG			0x04000000
>   #define MACB_CAPS_MACB_IS_EMAC			0x08000000
>   #define MACB_CAPS_FIFO_MODE			0x10000000
> diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
> index d13fb1d31821..cdf3e35b5b33 100644
> --- a/drivers/net/ethernet/cadence/macb_main.c
> +++ b/drivers/net/ethernet/cadence/macb_main.c
> @@ -684,6 +684,9 @@ static void macb_mac_config(struct phylink_config *config, unsigned int mode,
>   		} else if (state->interface == PHY_INTERFACE_MODE_10GBASER) {
>   			ctrl |= GEM_BIT(PCSSEL);
>   			ncr |= GEM_BIT(ENABLE_HS_MAC);
> +		} else if (bp->caps & MACB_CAPS_MIIONRGMII &&
> +			   bp->phy_interface == PHY_INTERFACE_MODE_MII) {
> +			ncr |= MACB_BIT(MIIONRGMII);
>   		}
>   	}
>   
> 


-- 
Nicolas Ferre

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