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Code Issues

generic: mtk_eth_soc: allow setting MDIO clock frequency

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Backport patch allowing to set the MDIO bus clock frequency.
By default the MDIO bus clock runs on 2.5 MHz, allow increasing it
up to 25 MHz.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
This commit is contained in:
Daniel Golle 2023-03-27 17:50:54 +01:00
parent a438a805eb
commit 5b972d7272
8 changed files with 99 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

76
target/linux/generic/backport-5.15/733-v6.3-19-net-ethernet-mtk_eth_soc-set-MDIO-bus-clock-frequenc.patch Normal file
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@ -0,0 +1,76 @@
From c0a440031d4314d1023c1b87f43a4233634eebdb Mon Sep 17 00:00:00 2001
From: Daniel Golle <daniel@makrotopia.org>
Date: Sun, 19 Mar 2023 12:57:15 +0000
Subject: [PATCH] net: ethernet: mtk_eth_soc: set MDIO bus clock frequency
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Set MDIO bus clock frequency and allow setting a custom maximum
frequency from device tree.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 21 +++++++++++++++++++++
drivers/net/ethernet/mediatek/mtk_eth_soc.h | 7 +++++++
2 files changed, 28 insertions(+)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -704,8 +704,10 @@ static const struct phylink_mac_ops mtk_
static int mtk_mdio_init(struct mtk_eth *eth)
{
+ unsigned int max_clk = 2500000, divider;
struct device_node *mii_np;
int ret;
+ u32 val;
mii_np = of_get_child_by_name(eth->dev->of_node, "mdio-bus");
if (!mii_np) {
@@ -731,6 +733,25 @@ static int mtk_mdio_init(struct mtk_eth
eth->mii_bus->parent = eth->dev;
snprintf(eth->mii_bus->id, MII_BUS_ID_SIZE, "%pOFn", mii_np);
+
+ if (!of_property_read_u32(mii_np, "clock-frequency", &val)) {
+ if (val > MDC_MAX_FREQ || val < MDC_MAX_FREQ / MDC_MAX_DIVIDER) {
+ dev_err(eth->dev, "MDIO clock frequency out of range");
+ ret = -EINVAL;
+ goto err_put_node;
+ }
+ max_clk = val;
+ }
+ divider = min_t(unsigned int, DIV_ROUND_UP(MDC_MAX_FREQ, max_clk), 63);
+
+ /* Configure MDC Divider */
+ val = mtk_r32(eth, MTK_PPSC);
+ val &= ~PPSC_MDC_CFG;
+ val |= FIELD_PREP(PPSC_MDC_CFG, divider) | PPSC_MDC_TURBO;
+ mtk_w32(eth, val, MTK_PPSC);
+
+ dev_dbg(eth->dev, "MDC is running on %d Hz\n", MDC_MAX_FREQ / divider);
+
ret = of_mdiobus_register(eth->mii_bus, mii_np);
err_put_node:
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -363,6 +363,13 @@
#define RX_DMA_VTAG_V2 BIT(0)
#define RX_DMA_L4_VALID_V2 BIT(2)
+/* PHY Polling and SMI Master Control registers */
+#define MTK_PPSC 0x10000
+#define PPSC_MDC_CFG GENMASK(29, 24)
+#define PPSC_MDC_TURBO BIT(20)
+#define MDC_MAX_FREQ 25000000
+#define MDC_MAX_DIVIDER 63
+
/* PHY Indirect Access Control registers */
#define MTK_PHY_IAC 0x10004
#define PHY_IAC_ACCESS BIT(31)

6
target/linux/generic/pending-5.15/702-net-ethernet-mtk_eth_soc-enable-threaded-NAPI.patch
View File

@ -10,7 +10,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -2972,8 +2972,8 @@ static irqreturn_t mtk_handle_irq_rx(int
@@ -2993,8 +2993,8 @@ static irqreturn_t mtk_handle_irq_rx(int
eth->rx_events++;
if (likely(napi_schedule_prep(&eth->rx_napi))) {
@ -20,7 +20,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
}
return IRQ_HANDLED;
@@ -2985,8 +2985,8 @@ static irqreturn_t mtk_handle_irq_tx(int
@@ -3006,8 +3006,8 @@ static irqreturn_t mtk_handle_irq_tx(int
eth->tx_events++;
if (likely(napi_schedule_prep(&eth->tx_napi))) {
@ -30,7 +30,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
}
return IRQ_HANDLED;
@@ -4617,6 +4617,8 @@ static int mtk_probe(struct platform_dev
@@ -4638,6 +4638,8 @@ static int mtk_probe(struct platform_dev
* for NAPI to work
*/
init_dummy_netdev(&eth->dummy_dev);

2
target/linux/generic/pending-5.15/723-net-mt7531-ensure-all-MACs-are-powered-down-before-r.patch
View File

@ -15,7 +15,7 @@ Signed-off-by: Alexander Couzens <lynxis@fe80.eu>
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -2341,6 +2341,10 @@ mt7531_setup(struct dsa_switch *ds)
@@ -2342,6 +2342,10 @@ mt7531_setup(struct dsa_switch *ds)
return -ENODEV;
}

12
target/linux/generic/pending-5.15/731-net-ethernet-mediatek-ppe-add-support-for-flow-accou.patch
View File

@ -53,7 +53,7 @@ v2: fix wrong variable name in return value check spotted by Denis Kirjanov
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -4586,8 +4586,8 @@ static int mtk_probe(struct platform_dev
@@ -4607,8 +4607,8 @@ static int mtk_probe(struct platform_dev
for (i = 0; i < num_ppe; i++) {
u32 ppe_addr = eth->soc->reg_map->ppe_base + i * 0x400;
@ -64,7 +64,7 @@ v2: fix wrong variable name in return value check spotted by Denis Kirjanov
if (!eth->ppe[i]) {
err = -ENOMEM;
goto err_free_dev;
@@ -4712,6 +4712,7 @@ static const struct mtk_soc_data mt7622_
@@ -4733,6 +4733,7 @@ static const struct mtk_soc_data mt7622_
.required_pctl = false,
.offload_version = 2,
.hash_offset = 2,
@ -72,7 +72,7 @@ v2: fix wrong variable name in return value check spotted by Denis Kirjanov
.foe_entry_size = sizeof(struct mtk_foe_entry) - 16,
.txrx = {
.txd_size = sizeof(struct mtk_tx_dma),
@@ -4749,6 +4750,7 @@ static const struct mtk_soc_data mt7629_
@@ -4770,6 +4771,7 @@ static const struct mtk_soc_data mt7629_
.hw_features = MTK_HW_FEATURES,
.required_clks = MT7629_CLKS_BITMAP,
.required_pctl = false,
@ -80,7 +80,7 @@ v2: fix wrong variable name in return value check spotted by Denis Kirjanov
.txrx = {
.txd_size = sizeof(struct mtk_tx_dma),
.rxd_size = sizeof(struct mtk_rx_dma),
@@ -4769,6 +4771,7 @@ static const struct mtk_soc_data mt7986_
@@ -4790,6 +4792,7 @@ static const struct mtk_soc_data mt7986_
.offload_version = 2,
.hash_offset = 4,
.foe_entry_size = sizeof(struct mtk_foe_entry),
@ -90,7 +90,7 @@ v2: fix wrong variable name in return value check spotted by Denis Kirjanov
.rxd_size = sizeof(struct mtk_rx_dma_v2),
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -1037,6 +1037,8 @@ struct mtk_reg_map {
@@ -1044,6 +1044,8 @@ struct mtk_reg_map {
* the extra setup for those pins used by GMAC.
* @hash_offset Flow table hash offset.
* @foe_entry_size Foe table entry size.
@ -99,7 +99,7 @@ v2: fix wrong variable name in return value check spotted by Denis Kirjanov
* @txd_size Tx DMA descriptor size.
* @rxd_size Rx DMA descriptor size.
* @rx_irq_done_mask Rx irq done register mask.
@@ -1054,6 +1056,7 @@ struct mtk_soc_data {
@@ -1061,6 +1063,7 @@ struct mtk_soc_data {
u8 hash_offset;
u16 foe_entry_size;
netdev_features_t hw_features;

14
target/linux/generic/pending-5.15/732-00-net-ethernet-mtk_eth_soc-drop-generic-vlan-rx-offloa.patch
View File

@ -17,7 +17,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -1830,9 +1830,7 @@ static int mtk_poll_rx(struct napi_struc
@@ -1851,9 +1851,7 @@ static int mtk_poll_rx(struct napi_struc
while (done < budget) {
unsigned int pktlen, *rxdcsum;
@ -27,7 +27,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
dma_addr_t dma_addr;
u32 hash, reason;
int mac = 0;
@@ -1967,36 +1965,21 @@ static int mtk_poll_rx(struct napi_struc
@@ -1988,36 +1986,21 @@ static int mtk_poll_rx(struct napi_struc
skb_checksum_none_assert(skb);
skb->protocol = eth_type_trans(skb, netdev);
@ -70,7 +70,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
skb_record_rx_queue(skb, 0);
napi_gro_receive(napi, skb);
@@ -2811,29 +2794,11 @@ static netdev_features_t mtk_fix_feature
@@ -2832,29 +2815,11 @@ static netdev_features_t mtk_fix_feature
static int mtk_set_features(struct net_device *dev, netdev_features_t features)
{
@ -100,7 +100,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
return 0;
}
@@ -3147,30 +3112,6 @@ static int mtk_open(struct net_device *d
@@ -3168,30 +3133,6 @@ static int mtk_open(struct net_device *d
struct mtk_eth *eth = mac->hw;
int i, err;
@ -131,7 +131,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
err = phylink_of_phy_connect(mac->phylink, mac->of_node, 0);
if (err) {
netdev_err(dev, "%s: could not attach PHY: %d\n", __func__,
@@ -3211,6 +3152,35 @@ static int mtk_open(struct net_device *d
@@ -3232,6 +3173,35 @@ static int mtk_open(struct net_device *d
phylink_start(mac->phylink);
netif_tx_start_all_queues(dev);
@ -167,7 +167,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
return 0;
}
@@ -3695,10 +3665,9 @@ static int mtk_hw_init(struct mtk_eth *e
@@ -3716,10 +3686,9 @@ static int mtk_hw_init(struct mtk_eth *e
if (!MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) {
val = mtk_r32(eth, MTK_CDMP_IG_CTRL);
mtk_w32(eth, val | MTK_CDMP_STAG_EN, MTK_CDMP_IG_CTRL);
@ -180,7 +180,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
/* set interrupt delays based on current Net DIM sample */
mtk_dim_rx(&eth->rx_dim.work);
@@ -4336,7 +4305,7 @@ static int mtk_add_mac(struct mtk_eth *e
@@ -4357,7 +4326,7 @@ static int mtk_add_mac(struct mtk_eth *e
eth->netdev[id]->hw_features |= NETIF_F_LRO;
eth->netdev[id]->vlan_features = eth->soc->hw_features &

6
target/linux/generic/pending-5.15/732-01-net-ethernet-mtk_eth_soc-work-around-issue-with-send.patch
View File

@ -16,7 +16,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -1403,12 +1403,28 @@ static void mtk_wake_queue(struct mtk_et
@@ -1424,12 +1424,28 @@ static void mtk_wake_queue(struct mtk_et
}
}
@ -45,7 +45,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
bool gso = false;
int tx_num;
@@ -1430,6 +1446,18 @@ static netdev_tx_t mtk_start_xmit(struct
@@ -1451,6 +1467,18 @@ static netdev_tx_t mtk_start_xmit(struct
return NETDEV_TX_BUSY;
}
@ -64,7 +64,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
/* TSO: fill MSS info in tcp checksum field */
if (skb_is_gso(skb)) {
if (skb_cow_head(skb, 0)) {
@@ -1445,8 +1473,14 @@ static netdev_tx_t mtk_start_xmit(struct
@@ -1466,8 +1494,14 @@ static netdev_tx_t mtk_start_xmit(struct
}
}

2
target/linux/generic/pending-5.15/736-01-net-ethernet-mtk_eth_soc-add-code-for-offloading-flo.patch
View File

@ -14,7 +14,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -1357,6 +1357,9 @@ int mtk_gmac_rgmii_path_setup(struct mtk
@@ -1364,6 +1364,9 @@ int mtk_gmac_rgmii_path_setup(struct mtk
int mtk_eth_offload_init(struct mtk_eth *eth);
int mtk_eth_setup_tc(struct net_device *dev, enum tc_setup_type type,
void *type_data);

4
target/linux/mediatek/patches-5.15/703-v5.17-net-ethernet-mtk_eth_soc-implement-Clause-45-MDIO-ac.patch
View File

@ -103,7 +103,7 @@ Signed-off-by: David S. Miller <davem@davemloft.net>
ret = mtk_mdio_busy_wait(eth);
if (ret < 0)
@@ -727,6 +770,7 @@ static int mtk_mdio_init(struct mtk_eth
@@ -729,6 +772,7 @@ static int mtk_mdio_init(struct mtk_eth
eth->mii_bus->name = "mdio";
eth->mii_bus->read = mtk_mdio_read;
eth->mii_bus->write = mtk_mdio_write;
@ -113,7 +113,7 @@ Signed-off-by: David S. Miller <davem@davemloft.net>
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -369,9 +369,12 @@
@@ -376,9 +376,12 @@
#define PHY_IAC_ADDR_MASK GENMASK(24, 20)
#define PHY_IAC_ADDR(x) FIELD_PREP(PHY_IAC_ADDR_MASK, (x))
#define PHY_IAC_CMD_MASK GENMASK(19, 18)