ramips: mt7621: backport PCIe driver fixes from staging-test

Backport mt7621-pci/mt7621-pci-phy fixes from staging-test

Signed-off-by: DENG Qingfang <dengqf6@mail2.sysu.edu.cn>

1 files changed, 46 insertions, 0 deletions

diff --git a/target/linux/ramips/patches-5.4/0105-staging-mt7621-pci-delete-no-more-needed-mt7621_rese.patch b/target/linux/ramips/patches-5.4/0105-staging-mt7621-pci-delete-no-more-needed-mt7621_rese.patch
new file mode 100644
index 0000000000..fc509e945b
--- /dev/null
+++ b/target/linux/ramips/patches-5.4/0105-staging-mt7621-pci-delete-no-more-needed-mt7621_rese.patch
@@ -0,0 +1,46 @@
+From 4be54c3a495f08c05a8e485566e5b88cd3537f16 Mon Sep 17 00:00:00 2001
+From: Sergio Paracuellos <sergio.paracuellos@gmail.com>
+Date: Fri, 13 Mar 2020 21:09:13 +0100
+Subject: [PATCH] staging: mt7621-pci: delete no more needed
+ 'mt7621_reset_port'
+
+After review all the resets at the beggining the function
+'mt7621_reset_port' is not needed anymore. Hence delete it
+and its uses.
+
+Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
+Link: https://lore.kernel.org/r/20200313200913.24321-7-sergio.paracuellos@gmail.com
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/staging/mt7621-pci/pci-mt7621.c | 13 -------------
+ 1 file changed, 13 deletions(-)
+
+--- a/drivers/staging/mt7621-pci/pci-mt7621.c
++++ b/drivers/staging/mt7621-pci/pci-mt7621.c
+@@ -255,13 +255,6 @@ static inline void mt7621_control_deasse
+ 		reset_control_assert(port->pcie_rst);
+ }
+ 
+-static void mt7621_reset_port(struct mt7621_pcie_port *port)
+-{
+-	mt7621_control_assert(port);
+-	msleep(100);
+-	mt7621_control_deassert(port);
+-}
+-
+ static void setup_cm_memory_region(struct mt7621_pcie *pcie)
+ {
+ 	struct resource *mem_resource = &pcie->mem;
+@@ -427,12 +420,6 @@ static int mt7621_pcie_init_port(struct
+ 	u32 slot = port->slot;
+ 	int err;
+ 
+-	/*
+-	 * Any MT7621 Ralink pcie controller that doesn't have 0x0101 at
+-	 * the end of the chip_id has inverted PCI resets.
+-	 */
+-	mt7621_reset_port(port);
+-
+ 	err = phy_init(port->phy);
+ 	if (err) {
+ 		dev_err(dev, "failed to initialize port%d phy\n", slot);