mirrors/linux
2
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-22 14:27:53 -04:00
Code Issues Packages Projects Releases Wiki Activity

net: macb: Add "mobileye,eyeq5-gem" compatible

Browse Source 
Add support for the two GEM instances inside Mobileye EyeQ5 SoCs, using
compatible "mobileye,eyeq5-gem". With it, add a custom init sequence
that must grab a generic PHY and initialise it.

We use bp->phy in both RGMII and SGMII cases. Tell our mode by adding a
phy_set_mode_ext() during macb_open(), before phy_power_on(). We are
the first users of bp->phy that use it in non-SGMII cases.

The phy_set_mode_ext() call is made unconditionally. It cannot cause
issues on platforms where !bp->phy or !bp->phy->ops->set_mode as, in
those cases, the call is a no-op (returning zero). From reading
upstream DTS, we can figure out that no platform has a bp->phy and a
PHY driver that has a .set_mode() implementation:
 - cdns,zynqmp-gem: no DTS upstream.
 - microchip,mpfs-macb: microchip/mpfs.dtsi, &mac0..1, no PHY attached.
 - xlnx,versal-gem: xilinx/versal-net.dtsi, &gem0..1, no PHY attached.
 - xlnx,zynqmp-gem: xilinx/zynqmp.dtsi, &gem0..3, PHY attached to
   drivers/phy/xilinx/phy-zynqmp.c which has no .set_mode().

Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20251023-macb-eyeq5-v3-5-af509422c204@bootlin.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Théo Lebrun
2025-10-23 18:22:55 +02:00
committed by Paolo Abeni
parent 3f7e51cd5f
commit 48cf0be9b9
1 changed files with 38 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
drivers/net/ethernet/cadence/macb_main.c
View File

@@ -2965,6 +2965,10 @@ static int macb_open(struct net_device *dev)
macb_init_hw(bp);
err = phy_set_mode_ext(bp->phy, PHY_MODE_ETHERNET, bp->phy_interface);
if (err)
goto reset_hw;
err = phy_power_on(bp->phy);
if (err)
goto reset_hw;
@@ -5189,6 +5193,28 @@ static int init_reset_optional(struct platform_device *pdev)
return ret;
}
static int eyeq5_init(struct platform_device *pdev)
{
struct net_device *netdev = platform_get_drvdata(pdev);
struct macb *bp = netdev_priv(netdev);
struct device *dev = &pdev->dev;
int ret;
bp->phy = devm_phy_get(dev, NULL);
if (IS_ERR(bp->phy))
return dev_err_probe(dev, PTR_ERR(bp->phy),
"failed to get PHY\n");
ret = phy_init(bp->phy);
if (ret)
return dev_err_probe(dev, ret, "failed to init PHY\n");
ret = macb_init(pdev);
if (ret)
phy_exit(bp->phy);
return ret;
}
static const struct macb_usrio_config sama7g5_usrio = {
.mii = 0,
.rmii = 1,
@@ -5343,6 +5369,17 @@ static const struct macb_config versal_config = {
.usrio = &macb_default_usrio,
};
static const struct macb_config eyeq5_config = {
.caps = MACB_CAPS_GIGABIT_MODE_AVAILABLE | MACB_CAPS_JUMBO |
MACB_CAPS_GEM_HAS_PTP | MACB_CAPS_QUEUE_DISABLE |
MACB_CAPS_NO_LSO,
.dma_burst_length = 16,
.clk_init = macb_clk_init,
.init = eyeq5_init,
.jumbo_max_len = 10240,
.usrio = &macb_default_usrio,
};
static const struct macb_config raspberrypi_rp1_config = {
.caps = MACB_CAPS_GIGABIT_MODE_AVAILABLE | MACB_CAPS_CLK_HW_CHG |
MACB_CAPS_JUMBO |
@@ -5374,6 +5411,7 @@ static const struct of_device_id macb_dt_ids[] = {
{ .compatible = "microchip,mpfs-macb", .data = &mpfs_config },
{ .compatible = "microchip,sama7g5-gem", .data = &sama7g5_gem_config },
{ .compatible = "microchip,sama7g5-emac", .data = &sama7g5_emac_config },
{ .compatible = "mobileye,eyeq5-gem", .data = &eyeq5_config },
{ .compatible = "raspberrypi,rp1-gem", .data = &raspberrypi_rp1_config },
{ .compatible = "xlnx,zynqmp-gem", .data = &zynqmp_config},
{ .compatible = "xlnx,zynq-gem", .data = &zynq_config },