target/linux/generic/pending-5.15/775-net-dsa-b53-add-BCM63268-RGMII-configuration.patch

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  65 From: =?utf-8?q?=C3=81lvaro_Fern=C3=A1ndez_Rojas?=  <noltari@gmail.com>
  66 To: f.fainelli@gmail.com, jonas.gorski@gmail.com, andrew@lunn.ch,
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  71 Cc: =?utf-8?q?=C3=81lvaro_Fern=C3=A1ndez_Rojas?=  <noltari@gmail.com>,
  72  Simon Horman <simon.horman@corigine.com>
  73 Subject: [PATCH v2 4/4] net: dsa: b53: add BCM63268 RGMII configuration
  74 Date: Tue, 21 Mar 2023 18:33:59 +0100
  75 Message-Id: <20230321173359.251778-5-noltari@gmail.com>
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  77 In-Reply-To: <20230321173359.251778-1-noltari@gmail.com>
  78 References: <20230320155024.164523-1-noltari@gmail.com>
  79  <20230321173359.251778-1-noltari@gmail.com>
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  85
  86 BCM63268 requires special RGMII configuration to work.
  87
  88 Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
  89 Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
  90 Reviewed-by: Simon Horman <simon.horman@corigine.com>
  91 ---
  92  v2: no changes.
  93
  94  drivers/net/dsa/b53/b53_common.c | 6 +++++-
  95  drivers/net/dsa/b53/b53_regs.h   | 1 +
  96  2 files changed, 6 insertions(+), 1 deletion(-)
  97
  98 --- a/drivers/net/dsa/b53/b53_common.c
  99 +++ b/drivers/net/dsa/b53/b53_common.c
 100 @@ -1240,8 +1240,12 @@ static void b53_adjust_63xx_rgmii(struct
 101                 break;
 102         }
 103
 104 -       if (port != dev->imp_port)
 105 +       if (port != dev->imp_port) {
 106 +               if (is63268(dev))
 107 +                       rgmii_ctrl |= RGMII_CTRL_MII_OVERRIDE;
 108 +
 109                 rgmii_ctrl |= RGMII_CTRL_ENABLE_GMII;
 110 +       }
 111
 112         b53_write8(dev, B53_CTRL_PAGE, off, rgmii_ctrl);
 113
 114 --- a/drivers/net/dsa/b53/b53_regs.h
 115 +++ b/drivers/net/dsa/b53/b53_regs.h
 116 @@ -138,6 +138,7 @@
 117
 118  #define B53_RGMII_CTRL_IMP             0x60
 119  #define   RGMII_CTRL_ENABLE_GMII       BIT(7)
 120 +#define   RGMII_CTRL_MII_OVERRIDE      BIT(6)
 121  #define   RGMII_CTRL_TIMING_SEL                BIT(2)
 122  #define   RGMII_CTRL_DLL_RXC           BIT(1)
 123  #define   RGMII_CTRL_DLL_TXC           BIT(0)