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kernel: backport bgmac upstream commits from 5.15 / for 5.16

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Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
This commit is contained in:
Rafał Miłecki 2021-10-07 11:29:52 +02:00
parent d69bf6601e
commit fd71ef34b7
5 changed files with 177 additions and 2 deletions
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3
target/linux/bcm53xx/patches-5.10/099-net-bcma-handle-deferred-probe.patch → target/linux/generic/backport-5.10/783-v5.15-0001-net-bgmac-bcma-handle-deferred-probe-error-due-to-ma.patch
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@ -1,7 +1,8 @@
From 029497e66bdc762e001880e4c85a91f35a54b1e2 Mon Sep 17 00:00:00 2001
From: Christian Lamparter <chunkeey@gmail.com>
Date: Sun, 19 Sep 2021 13:57:25 +0200
Subject: net: bgmac-bcma: handle deferred probe error due to mac-address
Subject: [PATCH] net: bgmac-bcma: handle deferred probe error due to
mac-address
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

36
target/linux/generic/backport-5.10/783-v5.15-0002-net-bgmac-platform-handle-mac-address-deferral.patch Normal file
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@ -0,0 +1,36 @@
From 763716a55cb1f480ffe1a9702e6b5d9ea1a80a24 Mon Sep 17 00:00:00 2001
From: Matthew Hagan <mnhagan88@gmail.com>
Date: Sat, 25 Sep 2021 11:36:27 +0000
Subject: [PATCH] net: bgmac-platform: handle mac-address deferral
This patch is a replication of Christian Lamparter's "net: bgmac-bcma:
handle deferred probe error due to mac-address" patch for the
bgmac-platform driver [1].
As is the case with the bgmac-bcma driver, this change is to cover the
scenario where the MAC address cannot yet be discovered due to reliance
on an nvmem provider which is yet to be instantiated, resulting in a
random address being assigned that has to be manually overridden.
[1] https://lore.kernel.org/netdev/20210919115725.29064-1-chunkeey@gmail.com
Signed-off-by: Matthew Hagan <mnhagan88@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/broadcom/bgmac-platform.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/net/ethernet/broadcom/bgmac-platform.c
+++ b/drivers/net/ethernet/broadcom/bgmac-platform.c
@@ -193,6 +193,9 @@ static int bgmac_probe(struct platform_d
bgmac->dma_dev = &pdev->dev;
ret = of_get_mac_address(np, bgmac->net_dev->dev_addr);
+ if (ret == -EPROBE_DEFER)
+ return ret;
+
if (ret)
dev_warn(&pdev->dev,
"MAC address not present in device tree\n");

84
target/linux/generic/backport-5.10/784-v5.16-0001-net-bgmac-improve-handling-PHY.patch Normal file
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@ -0,0 +1,84 @@
From b5375509184dc23d2b7fa0c5ed8763899ccc9674 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Sat, 2 Oct 2021 19:58:11 +0200
Subject: [PATCH] net: bgmac: improve handling PHY
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
1. Use info from DT if available
It allows describing for example a fixed link. It's more accurate than
just guessing there may be one (depending on a chipset).
2. Verify PHY ID before trying to connect PHY
PHY addr 0x1e (30) is special in Broadcom routers and means a switch
connected as MDIO devices instead of a real PHY. Don't try connecting to
it.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/broadcom/bgmac-bcma.c | 33 ++++++++++++++--------
1 file changed, 21 insertions(+), 12 deletions(-)
--- a/drivers/net/ethernet/broadcom/bgmac-bcma.c
+++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c
@@ -11,6 +11,7 @@
#include <linux/bcma/bcma.h>
#include <linux/brcmphy.h>
#include <linux/etherdevice.h>
+#include <linux/of_mdio.h>
#include <linux/of_net.h>
#include "bgmac.h"
@@ -86,17 +87,28 @@ static int bcma_phy_connect(struct bgmac
struct phy_device *phy_dev;
char bus_id[MII_BUS_ID_SIZE + 3];
+ /* DT info should be the most accurate */
+ phy_dev = of_phy_get_and_connect(bgmac->net_dev, bgmac->dev->of_node,
+ bgmac_adjust_link);
+ if (phy_dev)
+ return 0;
+
/* Connect to the PHY */
- snprintf(bus_id, sizeof(bus_id), PHY_ID_FMT, bgmac->mii_bus->id,
- bgmac->phyaddr);
- phy_dev = phy_connect(bgmac->net_dev, bus_id, bgmac_adjust_link,
- PHY_INTERFACE_MODE_MII);
- if (IS_ERR(phy_dev)) {
- dev_err(bgmac->dev, "PHY connection failed\n");
- return PTR_ERR(phy_dev);
+ if (bgmac->mii_bus && bgmac->phyaddr != BGMAC_PHY_NOREGS) {
+ snprintf(bus_id, sizeof(bus_id), PHY_ID_FMT, bgmac->mii_bus->id,
+ bgmac->phyaddr);
+ phy_dev = phy_connect(bgmac->net_dev, bus_id, bgmac_adjust_link,
+ PHY_INTERFACE_MODE_MII);
+ if (IS_ERR(phy_dev)) {
+ dev_err(bgmac->dev, "PHY connection failed\n");
+ return PTR_ERR(phy_dev);
+ }
+
+ return 0;
}
- return 0;
+ /* Assume a fixed link to the switch port */
+ return bgmac_phy_connect_direct(bgmac);
}
static const struct bcma_device_id bgmac_bcma_tbl[] = {
@@ -297,10 +309,7 @@ static int bgmac_probe(struct bcma_devic
bgmac->cco_ctl_maskset = bcma_bgmac_cco_ctl_maskset;
bgmac->get_bus_clock = bcma_bgmac_get_bus_clock;
bgmac->cmn_maskset32 = bcma_bgmac_cmn_maskset32;
- if (bgmac->mii_bus)
- bgmac->phy_connect = bcma_phy_connect;
- else
- bgmac->phy_connect = bgmac_phy_connect_direct;
+ bgmac->phy_connect = bcma_phy_connect;
err = bgmac_enet_probe(bgmac);
if (err)

54
target/linux/generic/backport-5.10/784-v5.16-0002-net-bgmac-support-MDIO-described-in-DT.patch Normal file
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@ -0,0 +1,54 @@
From 45c9d966688e7fad7f24bfc450547d91e4304d0b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Sat, 2 Oct 2021 19:58:12 +0200
Subject: [PATCH] net: bgmac: support MDIO described in DT
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Check ethernet controller DT node for "mdio" subnode and use it with
of_mdiobus_register() when present. That allows specifying MDIO and its
PHY devices in a standard DT based way.
This is required for BCM53573 SoC support. That family is sometimes
called Northstar (by marketing?) but is quite different from it. It uses
different CPU(s) and many different hw blocks.
One of shared blocks in BCM53573 is Ethernet controller. Switch however
is not SRAB accessible (as it Northstar) but is MDIO attached.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/broadcom/bgmac-bcma-mdio.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/broadcom/bgmac-bcma-mdio.c
+++ b/drivers/net/ethernet/broadcom/bgmac-bcma-mdio.c
@@ -10,6 +10,7 @@
#include <linux/bcma/bcma.h>
#include <linux/brcmphy.h>
+#include <linux/of_mdio.h>
#include "bgmac.h"
static bool bcma_mdio_wait_value(struct bcma_device *core, u16 reg, u32 mask,
@@ -211,6 +212,7 @@ struct mii_bus *bcma_mdio_mii_register(s
{
struct bcma_device *core = bgmac->bcma.core;
struct mii_bus *mii_bus;
+ struct device_node *np;
int err;
mii_bus = mdiobus_alloc();
@@ -229,7 +231,9 @@ struct mii_bus *bcma_mdio_mii_register(s
mii_bus->parent = &core->dev;
mii_bus->phy_mask = ~(1 << bgmac->phyaddr);
- err = mdiobus_register(mii_bus);
+ np = of_get_child_by_name(core->dev.of_node, "mdio");
+
+ err = of_mdiobus_register(mii_bus, np);
if (err) {
dev_err(&core->dev, "Registration of mii bus failed\n");
goto err_free_bus;

2
target/linux/generic/hack-5.10/773-bgmac-add-srab-switch.patch
View File

@ -14,7 +14,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
--- a/drivers/net/ethernet/broadcom/bgmac-bcma.c
+++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c
@@ -266,6 +266,7 @@ static int bgmac_probe(struct bcma_devic
@@ -280,6 +280,7 @@ static int bgmac_probe(struct bcma_devic
bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST;
bgmac->feature_flags |= BGMAC_FEAT_NO_RESET;
bgmac->feature_flags |= BGMAC_FEAT_FORCE_SPEED_2500;