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| author | Matthew Hagan <mnhagan88@gmail.com> | 2021-11-06 14:05:30 +0000 |
|---|---|---|
| committer | Hauke Mehrtens <hauke@hauke-m.de> | 2021-11-15 00:29:30 +0100 |
| commit | c9536520bdc2dccd88316fb889f65c0331a080ad (patch) | |
| tree | 265ff7dfbb2e92ff8965affefbd0dc0aa2bef183 /target | |
| parent | 59c2a585a19bf4108b7490779e4c25cc6977b9a2 (diff) | |
| download | upstream-c9536520bdc2dccd88316fb889f65c0331a080ad.tar.gz upstream-c9536520bdc2dccd88316fb889f65c0331a080ad.tar.bz2 upstream-c9536520bdc2dccd88316fb889f65c0331a080ad.zip | |
kernel: 5.10: backport explicit MAC06 disable patch
Backport of Ansuel Smith's "net: dsa: qca8k: make sure PAD0 MAC06
exchange is disabled", to ensure mac06 is disabled even if enabled by
the bootloader.
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Signed-off-by: Matthew Hagan <mnhagan88@gmail.com>
Diffstat (limited to 'target')
| -rw-r--r-- | target/linux/generic/backport-5.10/750-v5.16-net-dsa-qca8k-make-sure-pad0-mac06-exchange-is-disabled.patch | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.10/750-v5.16-net-dsa-qca8k-make-sure-pad0-mac06-exchange-is-disabled.patch b/target/linux/generic/backport-5.10/750-v5.16-net-dsa-qca8k-make-sure-pad0-mac06-exchange-is-disabled.patch new file mode 100644 index 0000000000..4a61703c52 --- /dev/null +++ b/target/linux/generic/backport-5.10/750-v5.16-net-dsa-qca8k-make-sure-pad0-mac06-exchange-is-disabled.patch @@ -0,0 +1,47 @@ +From 5f15d392dcb4aa250a63d6f2c5adfc26c0aedc78 Mon Sep 17 00:00:00 2001 +From: Ansuel Smith <ansuelsmth@gmail.com> +Date: Tue, 2 Nov 2021 19:30:41 +0100 +Subject: net: dsa: qca8k: make sure PAD0 MAC06 exchange is disabled + +Some device set MAC06 exchange in the bootloader. This cause some +problem as we don't support this strange mode and we just set the port6 +as the primary CPU port. With MAC06 exchange, PAD0 reg configure port6 +instead of port0. Add an extra check and explicitly disable MAC06 exchange +to correctly configure the port PAD config. + +Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com> +Fixes: 3fcf734aa482 ("net: dsa: qca8k: add support for cpu port 6") +Reviewed-by: Vladimir Oltean <olteanv@gmail.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + drivers/net/dsa/qca8k.c | 8 ++++++++ + drivers/net/dsa/qca8k.h | 1 + + 2 files changed, 9 insertions(+) + +--- a/drivers/net/dsa/qca8k.c ++++ b/drivers/net/dsa/qca8k.c +@@ -1109,6 +1109,14 @@ qca8k_setup(struct dsa_switch *ds) + if (ret) + return ret; + ++ /* Make sure MAC06 is disabled */ ++ ret = qca8k_reg_clear(priv, QCA8K_REG_PORT0_PAD_CTRL, ++ QCA8K_PORT0_PAD_MAC06_EXCHANGE_EN); ++ if (ret) { ++ dev_err(priv->dev, "failed disabling MAC06 exchange"); ++ return ret; ++ } ++ + /* Enable CPU Port */ + ret = qca8k_reg_set(priv, QCA8K_REG_GLOBAL_FW_CTRL0, + QCA8K_GLOBAL_FW_CTRL0_CPU_PORT_EN); +--- a/drivers/net/dsa/qca8k.h ++++ b/drivers/net/dsa/qca8k.h +@@ -34,6 +34,7 @@ + #define QCA8K_MASK_CTRL_DEVICE_ID_MASK GENMASK(15, 8) + #define QCA8K_MASK_CTRL_DEVICE_ID(x) ((x) >> 8) + #define QCA8K_REG_PORT0_PAD_CTRL 0x004 ++#define QCA8K_PORT0_PAD_MAC06_EXCHANGE_EN BIT(31) + #define QCA8K_PORT0_PAD_SGMII_RXCLK_FALLING_EDGE BIT(19) + #define QCA8K_PORT0_PAD_SGMII_TXCLK_FALLING_EDGE BIT(18) + #define QCA8K_REG_PORT5_PAD_CTRL 0x008 |