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Miller" , Rob Herring , Mark Rutland , Andrew Lunn , Florian Fainelli , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Douglas Anderson Subject: Re: [PATCH v2 2/7] net: phy: realtek: Allow disabling RTL8211E EEE LED mode Message-ID: <20190703203204.GE250418@google.com> References: <20190703193724.246854-1-mka@chromium.org> <20190703193724.246854-2-mka@chromium.org> <743dda1b-532d-175f-1f87-5d80ba4a2e94@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <743dda1b-532d-175f-1f87-5d80ba4a2e94@gmail.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hi, On Wed, Jul 03, 2019 at 10:09:39PM +0200, Heiner Kallweit wrote: > On 03.07.2019 21:37, Matthias Kaehlcke wrote: > > EEE LED mode is enabled by default on the RTL8211E. Disable it when > > the device tree property 'realtek,eee-led-mode-disable' exists. > > > > The magic values to disable EEE LED mode were taken from the RTL8211E > > datasheet, unfortunately they are not further documented. > > > > Signed-off-by: Matthias Kaehlcke > > --- > > Changes in v2: > > - patch added to the series > > --- > > drivers/net/phy/realtek.c | 37 ++++++++++++++++++++++++++++++++++++- > > 1 file changed, 36 insertions(+), 1 deletion(-) > > > > diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c > > index a669945eb829..eb815cbe1e72 100644 > > --- a/drivers/net/phy/realtek.c > > +++ b/drivers/net/phy/realtek.c > > @@ -9,8 +9,9 @@ > > * Copyright (c) 2004 Freescale Semiconductor, Inc. > > */ > > #include > > -#include > > #include > > +#include > > +#include > > > > #define RTL821x_PHYSR 0x11 > > #define RTL821x_PHYSR_DUPLEX BIT(13) > > @@ -26,6 +27,10 @@ > > #define RTL821x_EXT_PAGE_SELECT 0x1e > > #define RTL821x_PAGE_SELECT 0x1f > > > > +/* RTL8211E page 5 */ > > +#define RTL8211E_EEE_LED_MODE1 0x05 > > +#define RTL8211E_EEE_LED_MODE2 0x06 > > + > > #define RTL8211F_INSR 0x1d > > > > #define RTL8211F_TX_DELAY BIT(8) > > @@ -53,6 +58,35 @@ static int rtl821x_write_page(struct phy_device *phydev, int page) > > return __phy_write(phydev, RTL821x_PAGE_SELECT, page); > > } > > > > +static int rtl8211e_disable_eee_led_mode(struct phy_device *phydev) > > +{ > > You define return type int but AFAICS the return value is never used, > also in subsequent patches. ok, I'll change it to void > > + int ret = 0; > > + int oldpage; > > + > > + oldpage = phy_select_page(phydev, 5); > > + if (oldpage < 0) > > + goto out; > > + > > + /* write magic values to disable EEE LED mode */ > > + ret = __phy_write(phydev, RTL8211E_EEE_LED_MODE1, 0x8b82); > > + if (ret) > > + goto out; > > + > > + ret = __phy_write(phydev, RTL8211E_EEE_LED_MODE2, 0x052b); > > + > > +out: > > + return phy_restore_page(phydev, oldpage, ret); > > +} > > + > > +static int rtl8211e_config_init(struct phy_device *phydev) > > +{ > > + struct device *dev = &phydev->mdio.dev; > > + > > + if (of_property_read_bool(dev->of_node, "realtek,eee-led-mode-disable")) > > + rtl8211e_disable_eee_led_mode(phydev); > > + > > + return 0; > > +} > > I suppose checkpatch complains about the missing empty line. > You add it in a later patch, in case of a v3 you could fix that. Actually checkpatch does not complain, I'll fix it in v3. Thanks Matthias