generic: 5.15: move mvebu aardvark patch from pending to backport

Move mvebu aardvark patch from pending to backport as they got merged
upstream.
One additional patch is needed as a later fixup for it.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>

1 files changed, 194 insertions, 0 deletions

diff --git a/target/linux/generic/backport-5.15/347-v6.0-phy-marvell-phy-mvebu-a3700-comphy-Remove-broken-res.patch b/target/linux/generic/backport-5.15/347-v6.0-phy-marvell-phy-mvebu-a3700-comphy-Remove-broken-res.patch
new file mode 100644
index 0000000000..a2c897b7a9
--- /dev/null
+++ b/target/linux/generic/backport-5.15/347-v6.0-phy-marvell-phy-mvebu-a3700-comphy-Remove-broken-res.patch
@@ -0,0 +1,194 @@
+From 0a6fc70d76bddf98278af2ac000379c82aec8f11 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@kernel.org>
+Date: Mon, 29 Aug 2022 10:30:46 +0200
+Subject: [PATCH] phy: marvell: phy-mvebu-a3700-comphy: Remove broken reset
+ support
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Reset support for SATA PHY is somehow broken and after calling it, kernel
+is not able to detect and initialize SATA disk Samsung SSD 850 EMT0 [1].
+
+Reset support was introduced in commit 934337080c6c ("phy: marvell:
+phy-mvebu-a3700-comphy: Add native kernel implementation") as part of
+complete rewrite of this driver. v1 patch series of that commit [2] did
+not contain reset support and was tested that is working fine with
+Ethernet, SATA and USB PHYs without issues too.
+
+So for now remove broken reset support and change implementation of
+power_off callback to power off all functions on specified lane (and not
+only selected function) because during startup kernel does not know which
+function was selected and configured by bootloader. Same logic was used
+also in v1 patch series of that commit.
+
+This change fixes issues with initialization of SATA disk Samsung SSD 850
+and disk is working again, like before mentioned commit.
+
+Once problem with PHY reset callback is solved its functionality could be
+re-introduced. But for now it is unknown why it does not work.
+
+[1] - https://lore.kernel.org/r/20220531124159.3e4lgn2v462irbtz@shindev/
+[2] - https://lore.kernel.org/r/20211028184242.22105-1-kabel@kernel.org/
+
+Reported-by: Shinichiro Kawasaki <shinichiro.kawasaki@wdc.com>
+Fixes: 934337080c6c ("phy: marvell: phy-mvebu-a3700-comphy: Add native kernel implementation")
+Cc: stable@vger.kernel.org # v5.18+
+Signed-off-by: Pali Rohár <pali@kernel.org>
+Tested-by: Shinichiro Kawasaki <shinichiro.kawasaki@wdc.com>
+Link: https://lore.kernel.org/r/20220829083046.15082-1-pali@kernel.org
+Signed-off-by: Vinod Koul <vkoul@kernel.org>
+---
+ drivers/phy/marvell/phy-mvebu-a3700-comphy.c | 87 ++++----------------
+ 1 file changed, 17 insertions(+), 70 deletions(-)
+
+--- a/drivers/phy/marvell/phy-mvebu-a3700-comphy.c
++++ b/drivers/phy/marvell/phy-mvebu-a3700-comphy.c
+@@ -274,7 +274,6 @@ struct mvebu_a3700_comphy_lane {
+ 	int submode;
+ 	bool invert_tx;
+ 	bool invert_rx;
+-	bool needs_reset;
+ };
+ 
+ struct gbe_phy_init_data_fix {
+@@ -1097,40 +1096,12 @@ mvebu_a3700_comphy_pcie_power_off(struct
+ 			    0x0, PU_PLL_BIT | PU_RX_BIT | PU_TX_BIT);
+ }
+ 
+-static int mvebu_a3700_comphy_reset(struct phy *phy)
++static void mvebu_a3700_comphy_usb3_power_off(struct mvebu_a3700_comphy_lane *lane)
+ {
+-	struct mvebu_a3700_comphy_lane *lane = phy_get_drvdata(phy);
+-	u16 mask, data;
+-
+-	dev_dbg(lane->dev, "resetting lane %d\n", lane->id);
+-
+-	/* COMPHY reset for internal logic */
+-	comphy_lane_reg_set(lane, COMPHY_SFT_RESET,
+-			    SFT_RST_NO_REG, SFT_RST_NO_REG);
+-
+-	/* COMPHY register reset (cleared automatically) */
+-	comphy_lane_reg_set(lane, COMPHY_SFT_RESET, SFT_RST, SFT_RST);
+-
+-	/* PIPE soft and register reset */
+-	data = PIPE_SOFT_RESET | PIPE_REG_RESET;
+-	mask = data;
+-	comphy_lane_reg_set(lane, COMPHY_PIPE_RST_CLK_CTRL, data, mask);
+-
+-	/* Release PIPE register reset */
+-	comphy_lane_reg_set(lane, COMPHY_PIPE_RST_CLK_CTRL,
+-			    0x0, PIPE_REG_RESET);
+-
+-	/* Reset SB configuration register (only for lanes 0 and 1) */
+-	if (lane->id == 0 || lane->id == 1) {
+-		u32 mask, data;
+-
+-		data = PIN_RESET_CORE_BIT | PIN_RESET_COMPHY_BIT |
+-		       PIN_PU_PLL_BIT | PIN_PU_RX_BIT | PIN_PU_TX_BIT;
+-		mask = data | PIN_PU_IVREF_BIT | PIN_TX_IDLE_BIT;
+-		comphy_periph_reg_set(lane, COMPHY_PHY_CFG1, data, mask);
+-	}
+-
+-	return 0;
++	/*
++	 * The USB3 MAC sets the USB3 PHY to low state, so we do not
++	 * need to power off USB3 PHY again.
++	 */
+ }
+ 
+ static bool mvebu_a3700_comphy_check_mode(int lane,
+@@ -1171,10 +1142,6 @@ static int mvebu_a3700_comphy_set_mode(s
+ 	    (lane->mode != mode || lane->submode != submode))
+ 		return -EBUSY;
+ 
+-	/* If changing mode, ensure reset is called */
+-	if (lane->mode != PHY_MODE_INVALID && lane->mode != mode)
+-		lane->needs_reset = true;
+-
+ 	/* Just remember the mode, ->power_on() will do the real setup */
+ 	lane->mode = mode;
+ 	lane->submode = submode;
+@@ -1185,7 +1152,6 @@ static int mvebu_a3700_comphy_set_mode(s
+ static int mvebu_a3700_comphy_power_on(struct phy *phy)
+ {
+ 	struct mvebu_a3700_comphy_lane *lane = phy_get_drvdata(phy);
+-	int ret;
+ 
+ 	if (!mvebu_a3700_comphy_check_mode(lane->id, lane->mode,
+ 					   lane->submode)) {
+@@ -1193,14 +1159,6 @@ static int mvebu_a3700_comphy_power_on(s
+ 		return -EINVAL;
+ 	}
+ 
+-	if (lane->needs_reset) {
+-		ret = mvebu_a3700_comphy_reset(phy);
+-		if (ret)
+-			return ret;
+-
+-		lane->needs_reset = false;
+-	}
+-
+ 	switch (lane->mode) {
+ 	case PHY_MODE_USB_HOST_SS:
+ 		dev_dbg(lane->dev, "set lane %d to USB3 host mode\n", lane->id);
+@@ -1224,38 +1182,28 @@ static int mvebu_a3700_comphy_power_off(
+ {
+ 	struct mvebu_a3700_comphy_lane *lane = phy_get_drvdata(phy);
+ 
+-	switch (lane->mode) {
+-	case PHY_MODE_USB_HOST_SS:
+-		/*
+-		 * The USB3 MAC sets the USB3 PHY to low state, so we do not
+-		 * need to power off USB3 PHY again.
+-		 */
+-		break;
+-
+-	case PHY_MODE_SATA:
+-		mvebu_a3700_comphy_sata_power_off(lane);
+-		break;
+-
+-	case PHY_MODE_ETHERNET:
++	switch (lane->id) {
++	case 0:
++		mvebu_a3700_comphy_usb3_power_off(lane);
+ 		mvebu_a3700_comphy_ethernet_power_off(lane);
+-		break;
+-
+-	case PHY_MODE_PCIE:
++		return 0;
++	case 1:
+ 		mvebu_a3700_comphy_pcie_power_off(lane);
+-		break;
+-
++		mvebu_a3700_comphy_ethernet_power_off(lane);
++		return 0;
++	case 2:
++		mvebu_a3700_comphy_usb3_power_off(lane);
++		mvebu_a3700_comphy_sata_power_off(lane);
++		return 0;
+ 	default:
+ 		dev_err(lane->dev, "invalid COMPHY mode\n");
+ 		return -EINVAL;
+ 	}
+-
+-	return 0;
+ }
+ 
+ static const struct phy_ops mvebu_a3700_comphy_ops = {
+ 	.power_on	= mvebu_a3700_comphy_power_on,
+ 	.power_off	= mvebu_a3700_comphy_power_off,
+-	.reset		= mvebu_a3700_comphy_reset,
+ 	.set_mode	= mvebu_a3700_comphy_set_mode,
+ 	.owner		= THIS_MODULE,
+ };
+@@ -1393,8 +1341,7 @@ static int mvebu_a3700_comphy_probe(stru
+ 		 * To avoid relying on the bootloader/firmware configuration,
+ 		 * power off all comphys.
+ 		 */
+-		mvebu_a3700_comphy_reset(phy);
+-		lane->needs_reset = false;
++		mvebu_a3700_comphy_power_off(phy);
+ 	}
+ 
+ 	provider = devm_of_phy_provider_register(&pdev->dev,