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| author | Yangbo Lu <yangbo.lu@nxp.com> | 2020-04-10 10:47:05 +0800 |
|---|---|---|
| committer | Petr Štetiar <ynezz@true.cz> | 2020-05-07 12:53:06 +0200 |
| commit | cddd4591404fb4c53dc0b3c0b15b942cdbed4356 (patch) | |
| tree | 392c1179de46b0f804e3789edca19069b64e6b44 /target/linux/layerscape/patches-5.4/701-net-0402-drivers-net-dsa-felix-don-t-restart-PCS-SGMII-AN-if-.patch | |
| parent | d1d2c0b5579ea4f69a42246c9318539d61ba1999 (diff) | |
| download | upstream-cddd4591404fb4c53dc0b3c0b15b942cdbed4356.tar.gz upstream-cddd4591404fb4c53dc0b3c0b15b942cdbed4356.tar.bz2 upstream-cddd4591404fb4c53dc0b3c0b15b942cdbed4356.zip | |
layerscape: add patches-5.4
Add patches for linux-5.4. The patches are from NXP LSDK-20.04 release
which was tagged LSDK-20.04-V5.4.
https://source.codeaurora.org/external/qoriq/qoriq-components/linux/
For boards LS1021A-IOT, and Traverse-LS1043 which are not involved in
LSDK, port the dts patches from 4.14.
The patches are sorted into the following categories:
301-arch-xxxx
302-dts-xxxx
303-core-xxxx
701-net-xxxx
801-audio-xxxx
802-can-xxxx
803-clock-xxxx
804-crypto-xxxx
805-display-xxxx
806-dma-xxxx
807-gpio-xxxx
808-i2c-xxxx
809-jailhouse-xxxx
810-keys-xxxx
811-kvm-xxxx
812-pcie-xxxx
813-pm-xxxx
814-qe-xxxx
815-sata-xxxx
816-sdhc-xxxx
817-spi-xxxx
818-thermal-xxxx
819-uart-xxxx
820-usb-xxxx
821-vfio-xxxx
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Diffstat (limited to 'target/linux/layerscape/patches-5.4/701-net-0402-drivers-net-dsa-felix-don-t-restart-PCS-SGMII-AN-if-.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/701-net-0402-drivers-net-dsa-felix-don-t-restart-PCS-SGMII-AN-if-.patch | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/701-net-0402-drivers-net-dsa-felix-don-t-restart-PCS-SGMII-AN-if-.patch b/target/linux/layerscape/patches-5.4/701-net-0402-drivers-net-dsa-felix-don-t-restart-PCS-SGMII-AN-if-.patch new file mode 100644 index 0000000000..5008ca5c77 --- /dev/null +++ b/target/linux/layerscape/patches-5.4/701-net-0402-drivers-net-dsa-felix-don-t-restart-PCS-SGMII-AN-if-.patch @@ -0,0 +1,41 @@ +From 2a2ccfa44e56c45dfd1230f6efb3ec0a4a677f0a Mon Sep 17 00:00:00 2001 +From: Alex Marginean <alexandru.marginean@nxp.com> +Date: Wed, 15 Jan 2020 15:49:11 +0200 +Subject: [PATCH] drivers: net: dsa: felix: don't restart PCS SGMII AN if not + needed + +Some PHYs like VSC8234 don't like it when AN restarts on their system side +and they restart line side AN too, going into an endless link up/down loop. +Don't restart PCS AN if link is up already. + +Suggested-by: Vladimir Oltean <vladimir.oltean@nxp.com> +Signed-off-by: Alex Marginean <alexandru.marginean@nxp.com> +--- + drivers/net/dsa/ocelot/felix_vsc9959.c | 15 +++++++++++++++ + 1 file changed, 15 insertions(+) + +--- a/drivers/net/dsa/ocelot/felix_vsc9959.c ++++ b/drivers/net/dsa/ocelot/felix_vsc9959.c +@@ -648,7 +648,22 @@ static void vsc9959_pcs_init_sgmii(struc + unsigned int link_an_mode, + const struct phylink_link_state *state) + { ++ int bmsr, bmcr; ++ + if (link_an_mode == MLO_AN_INBAND) { ++ /* Some PHYs like VSC8234 don't like it when AN restarts on ++ * their system side and they restart line side AN too, going ++ * into an endless link up/down loop. Don't restart PCS AN if ++ * link is up already. ++ * We do check that AN is enabled just in case this is the 1st ++ * call, PCS detects a carrier but AN is disabled from power on ++ * or by boot loader. ++ */ ++ bmcr = phy_read(pcs, MII_BMCR); ++ bmsr = phy_read(pcs, MII_BMSR); ++ if ((bmcr & BMCR_ANENABLE) && (bmsr & BMSR_LSTATUS)) ++ return; ++ + /* SGMII spec requires tx_config_Reg[15:0] to be exactly 0x4001 + * for the MAC PCS in order to acknowledge the AN. + */ |