From: Vinod Koul <vkoul@kernel.org>
To: Dilip Kota <eswara.kota@linux.intel.com>
Cc: linux-kernel@vger.kernel.org, kishon@ti.com,
devicetree@vger.kernel.org, lee.jones@linaro.org, arnd@arndb.de,
robh@kernel.org, andriy.shevchenko@intel.com,
cheol.yong.kim@intel.com, chuanhua.lei@linux.intel.com,
qi-ming.wu@intel.com, yixin.zhu@intel.com
Subject: Re: [PATCH v7 3/3] phy: intel: Add driver support for ComboPhy
Date: Tue, 5 May 2020 10:51:22 +0530 [thread overview]
Message-ID: <20200505052122.GW1375924@vkoul-mobl> (raw)
In-Reply-To: <0de7ba47-bc98-9267-46b4-230a86151c2d@linux.intel.com>
On 04-05-20, 17:32, Dilip Kota wrote:
>
> On 5/4/2020 5:20 PM, Vinod Koul wrote:
> > On 04-05-20, 16:26, Dilip Kota wrote:
> > > On 5/4/2020 3:29 PM, Vinod Koul wrote:
> > > > On 30-04-20, 15:15, Dilip Kota wrote:
> > > >
> > > > > + u32 mask, u32 val)
> > > > > +{
> > > > > + u32 reg_val;
> > > > > +
> > > > > + reg_val = readl(base + reg);
> > > > > + reg_val &= ~mask;
> > > > > + reg_val |= FIELD_PREP(mask, val);
> > > > > + writel(reg_val, base + reg);
> > > > bypassing regmap here... why?
> > > It is not regmap address, one of the below two addresses are passed to this
> > > function.
> > okay, perhaps add a comment somewhere that regmap is not used for this
> > base?
> I dont see a need of adding a comment, describing don't do regmap here.
Driver uses regmap except here, which seems odd hence explanation
required for this.
> >
> > > struct intel_combo_phy {
> > > ...
> > > void __iomem *app_base;
> > > void __iomem *cr_base;
> > > ...
> > > }
> >
> > > > > +static int intel_cbphy_calibrate(struct phy *phy)
> > > > > +{
> > > > > + struct intel_cbphy_iphy *iphy = phy_get_drvdata(phy);
> > > > > + struct intel_combo_phy *cbphy = iphy->parent;
> > > > > + void __iomem *cr_base = cbphy->cr_base;
> > > > > + int val, ret, id;
> > > > > +
> > > > > + if (cbphy->phy_mode != PHY_XPCS_MODE)
> > > > > + return 0;
> > > > > +
> > > > > + id = PHY_ID(iphy);
> > > > > +
> > > > > + /* trigger auto RX adaptation */
> > > > > + combo_phy_w32_off_mask(cr_base, CR_ADDR(PCS_XF_ATE_OVRD_IN_2, id),
> > > > > + ADAPT_REQ_MSK, 3);
> > > > > + /* Wait RX adaptation to finish */
> > > > > + ret = readl_poll_timeout(cr_base + CR_ADDR(PCS_XF_RX_ADAPT_ACK, id),
> > > > > + val, val & RX_ADAPT_ACK_BIT, 10, 5000);
> > > > > + if (ret)
> > > > > + dev_err(cbphy->dev, "RX Adaptation failed!\n");
> > > > you want to continue her and not return error?
> > > Next step is stopping the Adaptation, it should be done in both error and
> > > success case.
> > Again documenting this helps, pls add some comments on this behaviour
> Comments are already in place, mentioning Start and Stop of Rx Adaptation.
> And Stop is being is done as Start is triggered, so not needed to mention
> error and success.
Ok
--
~Vinod
next prev parent reply other threads:[~2020-05-05 5:21 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-30 7:15 [PATCH v7 0/3] Add Intel ComboPhy driver Dilip Kota
2020-04-30 7:15 ` [PATCH v7 1/3] dt-bindings: phy: Add PHY_TYPE_XPCS definition Dilip Kota
2020-04-30 7:15 ` [PATCH v7 2/3] dt-bindings: phy: Add YAML schemas for Intel ComboPhy Dilip Kota
2020-04-30 7:15 ` [PATCH v7 3/3] phy: intel: Add driver support for ComboPhy Dilip Kota
2020-05-04 7:29 ` Vinod Koul
2020-05-04 8:26 ` Dilip Kota
2020-05-04 9:20 ` Vinod Koul
2020-05-04 9:32 ` Dilip Kota
2020-05-05 5:21 ` Vinod Koul [this message]
2020-05-05 7:54 ` Dilip Kota
2020-05-11 10:06 ` Dilip Kota
2020-04-30 8:25 ` [PATCH v7 0/3] Add Intel ComboPhy driver Lee Jones
2020-04-30 9:43 ` Dilip Kota
2020-04-30 10:09 ` Lee Jones
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