diff options
Diffstat (limited to 'target/linux/generic/pending-5.4/739-net-avoid-tx-fault-with-Nokia-GPON-module.patch')
| -rw-r--r-- | target/linux/generic/pending-5.4/739-net-avoid-tx-fault-with-Nokia-GPON-module.patch | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/target/linux/generic/pending-5.4/739-net-avoid-tx-fault-with-Nokia-GPON-module.patch b/target/linux/generic/pending-5.4/739-net-avoid-tx-fault-with-Nokia-GPON-module.patch deleted file mode 100644 index 6648d10c81..0000000000 --- a/target/linux/generic/pending-5.4/739-net-avoid-tx-fault-with-Nokia-GPON-module.patch +++ /dev/null @@ -1,108 +0,0 @@ -From 283b211aa01bdae94dffb3121655dbb20bf237f4 Mon Sep 17 00:00:00 2001 -From: Russell King <rmk+kernel@armlinux.org.uk> -Date: Tue, 3 Dec 2019 15:22:05 +0000 -Subject: net: sfp: avoid tx-fault with Nokia GPON module - -The Nokia GPON module can hold tx-fault active while it is initialising -which can take up to 60s. Avoid this causing the module to be declared -faulty after the SFP MSA defined non-cooled module timeout. - -Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> ---- - drivers/net/phy/sfp.c | 42 ++++++++++++++++++++++++++++++------------ - 1 file changed, 30 insertions(+), 12 deletions(-) - ---- a/drivers/net/phy/sfp.c -+++ b/drivers/net/phy/sfp.c -@@ -155,10 +155,20 @@ static const enum gpiod_flags gpio_flags - GPIOD_ASIS, - }; - --#define T_WAIT msecs_to_jiffies(50) --#define T_INIT_JIFFIES msecs_to_jiffies(300) --#define T_RESET_US 10 --#define T_FAULT_RECOVER msecs_to_jiffies(1000) -+/* t_start_up (SFF-8431) or t_init (SFF-8472) is the time required for a -+ * non-cooled module to initialise its laser safety circuitry. We wait -+ * an initial T_WAIT period before we check the tx fault to give any PHY -+ * on board (for a copper SFP) time to initialise. -+ */ -+#define T_WAIT msecs_to_jiffies(50) -+#define T_START_UP msecs_to_jiffies(300) -+#define T_START_UP_BAD_GPON msecs_to_jiffies(60000) -+ -+/* t_reset is the time required to assert the TX_DISABLE signal to reset -+ * an indicated TX_FAULT. -+ */ -+#define T_RESET_US 10 -+#define T_FAULT_RECOVER msecs_to_jiffies(1000) - - /* SFP module presence detection is poor: the three MOD DEF signals are - * the same length on the PCB, which means it's possible for MOD DEF 0 to -@@ -219,6 +229,7 @@ struct sfp { - - struct sfp_eeprom_id id; - unsigned int module_power_mW; -+ unsigned int module_t_start_up; - - #if IS_ENABLED(CONFIG_HWMON) - struct sfp_diag diag; -@@ -1742,6 +1753,12 @@ static int sfp_sm_mod_probe(struct sfp * - if (ret < 0) - return ret; - -+ if (!memcmp(id.base.vendor_name, "ALCATELLUCENT ", 16) && -+ !memcmp(id.base.vendor_pn, "3FE46541AA ", 16)) -+ sfp->module_t_start_up = T_START_UP_BAD_GPON; -+ else -+ sfp->module_t_start_up = T_START_UP; -+ - return 0; - } - -@@ -1947,11 +1964,12 @@ static void sfp_sm_main(struct sfp *sfp, - break; - - if (sfp->state & SFP_F_TX_FAULT) { -- /* Wait t_init before indicating that the link is up, -- * provided the current state indicates no TX_FAULT. If -- * TX_FAULT clears before this time, that's fine too. -+ /* Wait up to t_init (SFF-8472) or t_start_up (SFF-8431) -+ * from the TX_DISABLE deassertion for the module to -+ * initialise, which is indicated by TX_FAULT -+ * deasserting. - */ -- timeout = T_INIT_JIFFIES; -+ timeout = sfp->module_t_start_up; - if (timeout > T_WAIT) - timeout -= T_WAIT; - else -@@ -1968,8 +1986,8 @@ static void sfp_sm_main(struct sfp *sfp, - - case SFP_S_INIT: - if (event == SFP_E_TIMEOUT && sfp->state & SFP_F_TX_FAULT) { -- /* TX_FAULT is still asserted after t_init, so assume -- * there is a fault. -+ /* TX_FAULT is still asserted after t_init or -+ * or t_start_up, so assume there is a fault. - */ - sfp_sm_fault(sfp, SFP_S_INIT_TX_FAULT, - sfp->sm_retries == 5); -@@ -1988,7 +2006,7 @@ static void sfp_sm_main(struct sfp *sfp, - case SFP_S_INIT_TX_FAULT: - if (event == SFP_E_TIMEOUT) { - sfp_module_tx_fault_reset(sfp); -- sfp_sm_next(sfp, SFP_S_INIT, T_INIT_JIFFIES); -+ sfp_sm_next(sfp, SFP_S_INIT, sfp->module_t_start_up); - } - break; - -@@ -2012,7 +2030,7 @@ static void sfp_sm_main(struct sfp *sfp, - case SFP_S_TX_FAULT: - if (event == SFP_E_TIMEOUT) { - sfp_module_tx_fault_reset(sfp); -- sfp_sm_next(sfp, SFP_S_REINIT, T_INIT_JIFFIES); -+ sfp_sm_next(sfp, SFP_S_REINIT, sfp->module_t_start_up); - } - break; - |