Messages in this thread | | | From | "Ooi, Joyce" <> | Subject | RE: [PATCH v4 09/10] net: eth: altera: add msgdma prefetcher | Date | Tue, 14 Jul 2020 14:35:16 +0000 |
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> -----Original Message----- > From: Jakub Kicinski <kuba@kernel.org> > Sent: Thursday, July 9, 2020 5:49 AM > To: Ooi, Joyce <joyce.ooi@intel.com> > Cc: Thor Thayer <thor.thayer@linux.intel.com>; David S . Miller > <davem@davemloft.net>; netdev@vger.kernel.org; linux- > kernel@vger.kernel.org; Dalon Westergreen > <dalon.westergreen@linux.intel.com>; Tan, Ley Foon > <ley.foon.tan@intel.com>; See, Chin Liang <chin.liang.see@intel.com>; > Nguyen, Dinh <dinh.nguyen@intel.com>; Westergreen, Dalon > <dalon.westergreen@intel.com> > Subject: Re: [PATCH v4 09/10] net: eth: altera: add msgdma prefetcher > > On Wed, 8 Jul 2020 15:24:00 +0800 Ooi, Joyce wrote: > > + /* get prefetcher rx poll frequency from device tree */ > > + if (of_property_read_u32(pdev->dev.of_node, "rx-poll- > freq", > > + &priv->rx_poll_freq)) { > > + dev_info(&pdev->dev, "Defaulting RX Poll Frequency > to 128\n"); > > + priv->rx_poll_freq = 128; > > + } > > + > > + /* get prefetcher rx poll frequency from device tree */ > > + if (of_property_read_u32(pdev->dev.of_node, "tx-poll- > freq", > > + &priv->tx_poll_freq)) { > > + dev_info(&pdev->dev, "Defaulting TX Poll Frequency > to 128\n"); > > + priv->tx_poll_freq = 128; > > + } > > I'm no device tree expert but these look like config options rather than HW > description. They also don't appear to be documented in the next patch.
The poll_freq are part of the msgdma prefetcher IP, whereby it specifies the frequency of descriptor polling operation. I can add the poll_freq description in the next patch.
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