From: "Michal Vokáč" <michal.vokac@ysoft.com>
To: Vinod Koul <vkoul@kernel.org>, David S Miller <davem@davemloft.net>
Cc: linux-arm-msm@vger.kernel.org,
Bjorn Andersson <bjorn.andersson@linaro.org>,
netdev@vger.kernel.org, Niklas Cassel <niklas.cassel@linaro.org>,
Andrew Lunn <andrew@lunn.ch>,
Florian Fainelli <f.fainelli@gmail.com>
Subject: Re: [PATCH] net: dsa: qca8k: Enable delay for RGMII_ID mode
Date: Mon, 18 Feb 2019 14:35:53 +0100 [thread overview]
Message-ID: <d930360c-b49d-23f8-7887-f0550d81b118@ysoft.com> (raw)
In-Reply-To: <20190218130352.9373-1-vkoul@kernel.org>
On 18. 02. 19 14:03, Vinod Koul wrote:
> RGMII_ID specifies that we should have internal delay, so resurrect the
> delay addition routine but under the RGMII_ID mode.
>
> Fixes: 40269aa9f40a ("net: dsa: qca8k: disable delay for RGMII mode")
> Signed-off-by: Vinod Koul <vkoul@kernel.org>
Fixes the problem on my imx6dl platform with QCA8334 switch.
Thank you!
Tested-by: Michal Vokáč <michal.vokac@ysoft.com>
> ---
> drivers/net/dsa/qca8k.c | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/drivers/net/dsa/qca8k.c b/drivers/net/dsa/qca8k.c
> index a4b6cda38016..aa1f7f1b20d3 100644
> --- a/drivers/net/dsa/qca8k.c
> +++ b/drivers/net/dsa/qca8k.c
> @@ -443,6 +443,18 @@ qca8k_set_pad_ctrl(struct qca8k_priv *priv, int port, int mode)
> val = QCA8K_PORT_PAD_RGMII_EN;
> qca8k_write(priv, reg, val);
> break;
> + case PHY_INTERFACE_MODE_RGMII_ID:
> + /* RGMII_ID needs internal delay. This is enabled through
> + * PORT5_PAD_CTRL for all ports, rather than individual port
> + * registers
> + */
> + qca8k_write(priv, reg,
> + QCA8K_PORT_PAD_RGMII_EN |
> + QCA8K_PORT_PAD_RGMII_TX_DELAY(3) |
> + QCA8K_PORT_PAD_RGMII_RX_DELAY(3));
> + qca8k_write(priv, QCA8K_REG_PORT5_PAD_CTRL,
> + QCA8K_PORT_PAD_RGMII_RX_DELAY_EN);
> + break;
> case PHY_INTERFACE_MODE_SGMII:
> qca8k_write(priv, reg, QCA8K_PORT_PAD_SGMII_EN);
> break;
>
next prev parent reply other threads:[~2019-02-18 13:35 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-18 13:03 [PATCH] net: dsa: qca8k: Enable delay for RGMII_ID mode Vinod Koul
2019-02-18 13:33 ` Andrew Lunn
2019-02-19 4:59 ` Vinod Koul
2019-02-18 13:35 ` Michal Vokáč [this message]
2019-02-18 13:36 ` Andrew Lunn
2019-02-19 5:00 ` Vinod Koul
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