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authorMatthew Hagan <mnhagan88@gmail.com>2021-11-06 13:50:27 +0000
committerAdrian Schmutzler <freifunk@adrianschmutzler.de>2021-11-07 00:05:26 +0100
commitf2f42a54e8defb110a3e8b2aab833d67f27e2fe3 (patch)
tree81283babeb90d64938f6c8630fd6897920dd456c /target/linux/generic/backport-5.10/730-net-dsa-mt7530-setup-core-clock-even-in-TRGMII-mode.patch
parent07543d00e5107c41f6ed6369e1511cfb89efa468 (diff)
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kernel: 5.10: compress 7xx patch numbering
The qca8k patch series brings the numbering to 799. This patch renames 7xx patches to create space for more backports to be added. Signed-off-by: Matthew Hagan <mnhagan88@gmail.com> [rename 729->719] Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Diffstat (limited to 'target/linux/generic/backport-5.10/730-net-dsa-mt7530-setup-core-clock-even-in-TRGMII-mode.patch')
-rw-r--r--target/linux/generic/backport-5.10/730-net-dsa-mt7530-setup-core-clock-even-in-TRGMII-mode.patch84
1 files changed, 84 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.10/730-net-dsa-mt7530-setup-core-clock-even-in-TRGMII-mode.patch b/target/linux/generic/backport-5.10/730-net-dsa-mt7530-setup-core-clock-even-in-TRGMII-mode.patch
new file mode 100644
index 0000000000..f3a6f948ad
--- /dev/null
+++ b/target/linux/generic/backport-5.10/730-net-dsa-mt7530-setup-core-clock-even-in-TRGMII-mode.patch
@@ -0,0 +1,84 @@
+From c3b8e07909dbe67b0d580416c1a5257643a73be7 Mon Sep 17 00:00:00 2001
+From: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
+Date: Fri, 12 Mar 2021 00:07:03 -0800
+Subject: [PATCH] net: dsa: mt7530: setup core clock even in TRGMII mode
+
+A recent change to MIPS ralink reset logic made it so mt7530 actually
+resets the switch on platforms such as mt7621 (where bit 2 is the reset
+line for the switch). That exposed an issue where the switch would not
+function properly in TRGMII mode after a reset.
+
+Reconfigure core clock in TRGMII mode to fix the issue.
+
+Tested on Ubiquiti ER-X (MT7621) with TRGMII mode enabled.
+
+Fixes: 3f9ef7785a9c ("MIPS: ralink: manage low reset lines")
+Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/dsa/mt7530.c | 52 +++++++++++++++++++---------------------
+ 1 file changed, 25 insertions(+), 27 deletions(-)
+
+--- a/drivers/net/dsa/mt7530.c
++++ b/drivers/net/dsa/mt7530.c
+@@ -436,34 +436,32 @@ mt7530_pad_clk_setup(struct dsa_switch *
+ TD_DM_DRVP(8) | TD_DM_DRVN(8));
+
+ /* Setup core clock for MT7530 */
+- if (!trgint) {
+- /* Disable MT7530 core clock */
+- core_clear(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN);
+-
+- /* Disable PLL, since phy_device has not yet been created
+- * provided for phy_[read,write]_mmd_indirect is called, we
+- * provide our own core_write_mmd_indirect to complete this
+- * function.
+- */
+- core_write_mmd_indirect(priv,
+- CORE_GSWPLL_GRP1,
+- MDIO_MMD_VEND2,
+- 0);
+-
+- /* Set core clock into 500Mhz */
+- core_write(priv, CORE_GSWPLL_GRP2,
+- RG_GSWPLL_POSDIV_500M(1) |
+- RG_GSWPLL_FBKDIV_500M(25));
+-
+- /* Enable PLL */
+- core_write(priv, CORE_GSWPLL_GRP1,
+- RG_GSWPLL_EN_PRE |
+- RG_GSWPLL_POSDIV_200M(2) |
+- RG_GSWPLL_FBKDIV_200M(32));
+-
+- /* Enable MT7530 core clock */
+- core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN);
+- }
++ /* Disable MT7530 core clock */
++ core_clear(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN);
++
++ /* Disable PLL, since phy_device has not yet been created
++ * provided for phy_[read,write]_mmd_indirect is called, we
++ * provide our own core_write_mmd_indirect to complete this
++ * function.
++ */
++ core_write_mmd_indirect(priv,
++ CORE_GSWPLL_GRP1,
++ MDIO_MMD_VEND2,
++ 0);
++
++ /* Set core clock into 500Mhz */
++ core_write(priv, CORE_GSWPLL_GRP2,
++ RG_GSWPLL_POSDIV_500M(1) |
++ RG_GSWPLL_FBKDIV_500M(25));
++
++ /* Enable PLL */
++ core_write(priv, CORE_GSWPLL_GRP1,
++ RG_GSWPLL_EN_PRE |
++ RG_GSWPLL_POSDIV_200M(2) |
++ RG_GSWPLL_FBKDIV_200M(32));
++
++ /* Enable MT7530 core clock */
++ core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN);
+
+ /* Setup the MT7530 TRGMII Tx Clock */
+ core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN);