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Tue, 21 Mar 2023 10:34:25 -0700 (PDT)
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From: =?utf-8?q?=C3=81lvaro_Fern=C3=A1ndez_Rojas?= <noltari@gmail.com>
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To: f.fainelli@gmail.com, jonas.gorski@gmail.com, andrew@lunn.ch,
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olteanv@gmail.com, davem@davemloft.net, edumazet@google.com,
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kuba@kernel.org, pabeni@redhat.com, robh+dt@kernel.org,
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devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
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Cc: =?utf-8?q?=C3=81lvaro_Fern=C3=A1ndez_Rojas?= <noltari@gmail.com>,
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Simon Horman <simon.horman@corigine.com>
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Subject: [PATCH v2 4/4] net: dsa: b53: add BCM63268 RGMII configuration
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Date: Tue, 21 Mar 2023 18:33:59 +0100
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Message-Id: <20230321173359.251778-5-noltari@gmail.com>
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X-Mailer: git-send-email 2.30.2
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In-Reply-To: <20230321173359.251778-1-noltari@gmail.com>
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References: <20230320155024.164523-1-noltari@gmail.com>
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<20230321173359.251778-1-noltari@gmail.com>
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MIME-Version: 1.0
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Precedence: bulk
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List-ID: <netdev.vger.kernel.org>
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X-Mailing-List: netdev@vger.kernel.org
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X-Patchwork-Delegate: kuba@kernel.org
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BCM63268 requires special RGMII configuration to work.
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Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
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Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
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Reviewed-by: Simon Horman <simon.horman@corigine.com>
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---
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v2: no changes.
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drivers/net/dsa/b53/b53_common.c | 6 +++++-
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drivers/net/dsa/b53/b53_regs.h | 1 +
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2 files changed, 6 insertions(+), 1 deletion(-)
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--- a/drivers/net/dsa/b53/b53_common.c
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+++ b/drivers/net/dsa/b53/b53_common.c
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@@ -1240,8 +1240,12 @@ static void b53_adjust_63xx_rgmii(struct
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break;
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}
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- if (port != dev->imp_port)
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+ if (port != dev->imp_port) {
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+ if (is63268(dev))
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+ rgmii_ctrl |= RGMII_CTRL_MII_OVERRIDE;
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+
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rgmii_ctrl |= RGMII_CTRL_ENABLE_GMII;
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+ }
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b53_write8(dev, B53_CTRL_PAGE, off, rgmii_ctrl);
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--- a/drivers/net/dsa/b53/b53_regs.h
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+++ b/drivers/net/dsa/b53/b53_regs.h
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@@ -138,6 +138,7 @@
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#define B53_RGMII_CTRL_IMP 0x60
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#define RGMII_CTRL_ENABLE_GMII BIT(7)
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+#define RGMII_CTRL_MII_OVERRIDE BIT(6)
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#define RGMII_CTRL_TIMING_SEL BIT(2)
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#define RGMII_CTRL_DLL_RXC BIT(1)
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#define RGMII_CTRL_DLL_TXC BIT(0)
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