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| author | Álvaro Fernández Rojas <noltari@gmail.com> | 2023-03-21 19:36:16 +0100 |
|---|---|---|
| committer | Álvaro Fernández Rojas <noltari@gmail.com> | 2023-03-21 19:36:16 +0100 |
| commit | 82dc16fde0337b573c543f023f3fe1d3657e17e4 (patch) | |
| tree | 91e570acc66ec33b9f2a8a428dd0caedbb5ded0d /target/linux/bmips/patches-5.15 | |
| parent | c6eb099db98eeb438d84a75cf5fcfe49f104be2c (diff) | |
| download | upstream-82dc16fde0337b573c543f023f3fe1d3657e17e4.tar.gz upstream-82dc16fde0337b573c543f023f3fe1d3657e17e4.tar.bz2 upstream-82dc16fde0337b573c543f023f3fe1d3657e17e4.zip | |
bmips: disable B53 MMAP phy read/write ops
Without this change, internal and external B53 switches couldn't coexist as
reported in https://github.com/openwrt/openwrt/issues/10313.
In order to fix this we need to force the B53 MMAP DSA switch driver to use
bcm6368-mdio-mux for accessing the PHY registers instead of its own phy_read()
and phy_write() functions.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/bmips/patches-5.15')
| -rw-r--r-- | target/linux/bmips/patches-5.15/510-net-dsa-b53-mmap-disable-phy-read-write-ops.patch | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/target/linux/bmips/patches-5.15/510-net-dsa-b53-mmap-disable-phy-read-write-ops.patch b/target/linux/bmips/patches-5.15/510-net-dsa-b53-mmap-disable-phy-read-write-ops.patch new file mode 100644 index 0000000000..3b1ee6cfa2 --- /dev/null +++ b/target/linux/bmips/patches-5.15/510-net-dsa-b53-mmap-disable-phy-read-write-ops.patch @@ -0,0 +1,46 @@ +From 03e31e5197a041857299c70bbbc461131156d434 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com> +Date: Tue, 21 Mar 2023 19:11:58 +0100 +Subject: [PATCH] net: dsa: b53: mmap: disable phy read/write ops +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +B53 MMAP switches have a MDIO Mux bus controller which should be used instead +of phy_read() and phy_write() ops. + +Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> +--- + drivers/net/dsa/b53/b53_mmap.c | 10 ++++++++++ + 1 file changed, 10 insertions(+) + +--- a/drivers/net/dsa/b53/b53_mmap.c ++++ b/drivers/net/dsa/b53/b53_mmap.c +@@ -279,6 +279,7 @@ static int b53_mmap_probe(struct platfor + struct b53_platform_data *pdata = pdev->dev.platform_data; + struct b53_mmap_priv *priv; + struct b53_device *dev; ++ struct dsa_switch_ops *dso; + int ret; + + if (!pdata && np) { +@@ -298,10 +299,19 @@ static int b53_mmap_probe(struct platfor + + priv->regs = pdata->regs; + ++ dso = devm_kzalloc(&pdev->dev, sizeof(*dso), GFP_KERNEL); ++ if (!dso) ++ return -ENOMEM; ++ + dev = b53_switch_alloc(&pdev->dev, &b53_mmap_ops, priv); + if (!dev) + return -ENOMEM; + ++ memcpy(dso, dev->ds->ops, sizeof(*dso)); ++ dso->phy_read = NULL; ++ dso->phy_write = NULL; ++ dev->ds->ops = dso; ++ + dev->pdata = pdata; + + platform_set_drvdata(pdev, dev); |