| Message ID | 04cac530-ea1b-850e-6cfa-144a55c4d75d@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [net] net: phy: meson-gxl: fix interrupt handling in forced mode | expand |
Seems works for JetHub H1 (S905W with internal phy) 03.03.2022 10:54, Heiner Kallweit wrote: > This PHY doesn't support a link-up interrupt source. If aneg is enabled > we use the "aneg complete" interrupt for this purpose, but if aneg is > disabled link-up isn't signaled currently. > According to a vendor driver there's an additional "energy detect" > interrupt source that can be used to signal link-up if aneg is disabled. > We can safely ignore this interrupt source if aneg is enabled. > > This patch was tested on a TX3 Mini TV box with S905W (even though > boot message says it's a S905D). > > This issue has been existing longer, but due to changes in phylib and > the driver the patch applies only from the commit marked as fixed. > > Fixes: 84c8f773d2dc ("net: phy: meson-gxl: remove the use of .ack_callback()") > Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> > --- > drivers/net/phy/meson-gxl.c | 23 +++++++++++++---------- > 1 file changed, 13 insertions(+), 10 deletions(-) > > diff --git a/drivers/net/phy/meson-gxl.c b/drivers/net/phy/meson-gxl.c > index 7e7904fee..c49062ad7 100644 > --- a/drivers/net/phy/meson-gxl.c > +++ b/drivers/net/phy/meson-gxl.c > @@ -30,8 +30,12 @@ > #define INTSRC_LINK_DOWN BIT(4) > #define INTSRC_REMOTE_FAULT BIT(5) > #define INTSRC_ANEG_COMPLETE BIT(6) > +#define INTSRC_ENERGY_DETECT BIT(7) > #define INTSRC_MASK 30 > > +#define INT_SOURCES (INTSRC_LINK_DOWN | INTSRC_ANEG_COMPLETE | \ > + INTSRC_ENERGY_DETECT) > + > #define BANK_ANALOG_DSP 0 > #define BANK_WOL 1 > #define BANK_BIST 3 > @@ -200,7 +204,6 @@ static int meson_gxl_ack_interrupt(struct phy_device *phydev) > > static int meson_gxl_config_intr(struct phy_device *phydev) > { > - u16 val; > int ret; > > if (phydev->interrupts == PHY_INTERRUPT_ENABLED) { > @@ -209,16 +212,9 @@ static int meson_gxl_config_intr(struct phy_device *phydev) > if (ret) > return ret; > > - val = INTSRC_ANEG_PR > - | INTSRC_PARALLEL_FAULT > - | INTSRC_ANEG_LP_ACK > - | INTSRC_LINK_DOWN > - | INTSRC_REMOTE_FAULT > - | INTSRC_ANEG_COMPLETE; > - ret = phy_write(phydev, INTSRC_MASK, val); > + ret = phy_write(phydev, INTSRC_MASK, INT_SOURCES); > } else { > - val = 0; > - ret = phy_write(phydev, INTSRC_MASK, val); > + ret = phy_write(phydev, INTSRC_MASK, 0); > > /* Ack any pending IRQ */ > ret = meson_gxl_ack_interrupt(phydev); > @@ -237,9 +233,16 @@ static irqreturn_t meson_gxl_handle_interrupt(struct phy_device *phydev) > return IRQ_NONE; > } > > + irq_status &= INT_SOURCES; > + > if (irq_status == 0) > return IRQ_NONE; > > + /* Aneg-complete interrupt is used for link-up detection */ > + if (phydev->autoneg == AUTONEG_ENABLE && > + irq_status == INTSRC_ENERGY_DETECT) > + return IRQ_HANDLED; > + > phy_trigger_machine(phydev); > > return IRQ_HANDLED;
On Fri, 4 Mar 2022 22:52:48 +0300 Vyacheslav wrote: > Seems works for JetHub H1 (S905W with internal phy) Thanks for testing! For future reference if you use the standard tag i.e.: Tested-by: Your Name <email@domain.tld> # JetHub H1 (S905W internal phy) the credit to your testing will be preserved in git history.
Hello: This patch was applied to netdev/net.git (master) by Jakub Kicinski <kuba@kernel.org>: On Thu, 3 Mar 2022 08:54:15 +0100 you wrote: > This PHY doesn't support a link-up interrupt source. If aneg is enabled > we use the "aneg complete" interrupt for this purpose, but if aneg is > disabled link-up isn't signaled currently. > According to a vendor driver there's an additional "energy detect" > interrupt source that can be used to signal link-up if aneg is disabled. > We can safely ignore this interrupt source if aneg is enabled. > > [...] Here is the summary with links: - [net] net: phy: meson-gxl: fix interrupt handling in forced mode https://git.kernel.org/netdev/net/c/a502a8f04097 You are awesome, thank you!
diff --git a/drivers/net/phy/meson-gxl.c b/drivers/net/phy/meson-gxl.c index 7e7904fee..c49062ad7 100644 --- a/drivers/net/phy/meson-gxl.c +++ b/drivers/net/phy/meson-gxl.c @@ -30,8 +30,12 @@ #define INTSRC_LINK_DOWN BIT(4) #define INTSRC_REMOTE_FAULT BIT(5) #define INTSRC_ANEG_COMPLETE BIT(6) +#define INTSRC_ENERGY_DETECT BIT(7) #define INTSRC_MASK 30 +#define INT_SOURCES (INTSRC_LINK_DOWN | INTSRC_ANEG_COMPLETE | \ + INTSRC_ENERGY_DETECT) + #define BANK_ANALOG_DSP 0 #define BANK_WOL 1 #define BANK_BIST 3 @@ -200,7 +204,6 @@ static int meson_gxl_ack_interrupt(struct phy_device *phydev) static int meson_gxl_config_intr(struct phy_device *phydev) { - u16 val; int ret; if (phydev->interrupts == PHY_INTERRUPT_ENABLED) { @@ -209,16 +212,9 @@ static int meson_gxl_config_intr(struct phy_device *phydev) if (ret) return ret; - val = INTSRC_ANEG_PR - | INTSRC_PARALLEL_FAULT - | INTSRC_ANEG_LP_ACK - | INTSRC_LINK_DOWN - | INTSRC_REMOTE_FAULT - | INTSRC_ANEG_COMPLETE; - ret = phy_write(phydev, INTSRC_MASK, val); + ret = phy_write(phydev, INTSRC_MASK, INT_SOURCES); } else { - val = 0; - ret = phy_write(phydev, INTSRC_MASK, val); + ret = phy_write(phydev, INTSRC_MASK, 0); /* Ack any pending IRQ */ ret = meson_gxl_ack_interrupt(phydev); @@ -237,9 +233,16 @@ static irqreturn_t meson_gxl_handle_interrupt(struct phy_device *phydev) return IRQ_NONE; } + irq_status &= INT_SOURCES; + if (irq_status == 0) return IRQ_NONE; + /* Aneg-complete interrupt is used for link-up detection */ + if (phydev->autoneg == AUTONEG_ENABLE && + irq_status == INTSRC_ENERGY_DETECT) + return IRQ_HANDLED; + phy_trigger_machine(phydev); return IRQ_HANDLED;
This PHY doesn't support a link-up interrupt source. If aneg is enabled we use the "aneg complete" interrupt for this purpose, but if aneg is disabled link-up isn't signaled currently. According to a vendor driver there's an additional "energy detect" interrupt source that can be used to signal link-up if aneg is disabled. We can safely ignore this interrupt source if aneg is enabled. This patch was tested on a TX3 Mini TV box with S905W (even though boot message says it's a S905D). This issue has been existing longer, but due to changes in phylib and the driver the patch applies only from the commit marked as fixed. Fixes: 84c8f773d2dc ("net: phy: meson-gxl: remove the use of .ack_callback()") Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> --- drivers/net/phy/meson-gxl.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-)