From: Andrew Lunn <andrew@lunn.ch>
To: Biao Huang <biao.huang@mediatek.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
Jose Abreu <joabreu@synopsys.com>,
Alexandre Torgue <alexandre.torgue@st.com>,
devicetree@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com, yt.shen@mediatek.com,
Rob Herring <robh+dt@kernel.org>,
linux-mediatek@lists.infradead.org,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
Giuseppe Cavallaro <peppe.cavallaro@st.com>,
davem@davemloft.net, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 1/2] net-next: stmmac: mediatek: add more suuport for RMII
Date: Thu, 12 Dec 2019 14:25:20 +0100 [thread overview]
Message-ID: <20191212132520.GB9959@lunn.ch> (raw)
In-Reply-To: <20191212024145.21752-2-biao.huang@mediatek.com>
On Thu, Dec 12, 2019 at 10:41:44AM +0800, Biao Huang wrote:
> MT2712 SoC can provide the rmii reference clock, and the clock
> will output from TXC pin only, which means ref_clk pin of external
> PHY should connect to TXC pin in this case.
> Add corresponding clock and timing settings.
Hi Biao
Subject line has a typo.
> @@ -278,6 +296,7 @@ static int mediatek_dwmac_config_dt(struct mediatek_dwmac_plat_data *plat)
> mac_delay->tx_inv = of_property_read_bool(plat->np, "mediatek,txc-inverse");
> mac_delay->rx_inv = of_property_read_bool(plat->np, "mediatek,rxc-inverse");
> plat->rmii_rxc = of_property_read_bool(plat->np, "mediatek,rmii-rxc");
> + plat->rmii_clk_from_mac = of_property_read_bool(plat->np, "mediatek,rmii-clk-from-mac");
>
> return 0;
> }
> @@ -287,6 +306,16 @@ static int mediatek_dwmac_clk_init(struct mediatek_dwmac_plat_data *plat)
> const struct mediatek_dwmac_variant *variant = plat->variant;
> int i, num = variant->num_clks;
>
> + plat->mac_rmii_clk = NULL;
> + if (plat->phy_mode == PHY_INTERFACE_MODE_RMII &&
> + plat->rmii_clk_from_mac) {
> + plat->mac_rmii_clk = devm_clk_get(plat->dev, "rmii_internal");
> + if (IS_ERR(plat->mac_rmii_clk)) {
> + dev_err(plat->dev, "Failed to get reference clk from MAC\n");
> + return PTR_ERR(plat->mac_rmii_clk);
> + }
> + }
Please don't use a binary property. This is a clock, so describe it in
DT as a clock. Add it to the existing list of clocks.
Andrew
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next prev parent reply other threads:[~2019-12-12 13:25 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-12 2:41 [PATCH 0/2] net-next: stmmac: dwmac-mediatek: add more support for RMII Biao Huang
2019-12-12 2:41 ` [PATCH 1/2] net-next: stmmac: mediatek: add more suuport " Biao Huang
2019-12-12 13:25 ` Andrew Lunn [this message]
[not found] ` <1576200981.29387.13.camel@mhfsdcap03>
2019-12-13 13:47 ` Andrew Lunn
2019-12-12 2:41 ` [PATCH 2/2] net-next: dt-binding: dwmac-mediatek: add more description " Biao Huang
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