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net: stmmac: add support for RZ/N1 GMAC

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Add support for the Renesas RZ/N1 GMAC. This support can make use of a
custom RZ/N1 PCS which is fetched by parsing the pcs-handle device tree
property.

Signed-off-by: Clément Léger <clement.leger@bootlin.com>
Co-developed-by: Romain Gantois <romain.gantois@bootlin.com>
Signed-off-by: Romain Gantois <romain.gantois@bootlin.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Hariprasad Kelam <hkelam@marvell.com>
Link: https://lore.kernel.org/r/20240513-rzn1-gmac1-v7-6-6acf58b5440d@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Clément Léger 2024-05-13 09:25:17 +02:00 • committed by Jakub Kicinski
parent 81b418a656
commit f360446ec1
4 changed files with 105 additions and 0 deletions
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6
MAINTAINERS
View file

@ -18874,6 +18874,12 @@ F: include/dt-bindings/net/pcs-rzn1-miic.h
F: include/linux/pcs-rzn1-miic.h
F: net/dsa/tag_rzn1_a5psw.c
RENESAS RZ/N1 DWMAC GLUE LAYER
M: Romain Gantois <romain.gantois@bootlin.com>
S: Maintained
F: Documentation/devicetree/bindings/net/renesas,rzn1-gmac.yaml
F: drivers/net/ethernet/stmicro/stmmac/dwmac-rzn1.c
RENESAS RZ/N1 RTC CONTROLLER DRIVER
M: Miquel Raynal <miquel.raynal@bootlin.com>
L: linux-rtc@vger.kernel.org

12
drivers/net/ethernet/stmicro/stmmac/Kconfig
View file

@ -142,6 +142,18 @@ config DWMAC_ROCKCHIP
This selects the Rockchip RK3288 SoC glue layer support for
the stmmac device driver.
config DWMAC_RZN1
tristate "Renesas RZ/N1 dwmac support"
default ARCH_RZN1
depends on OF && (ARCH_RZN1 || COMPILE_TEST)
select PCS_RZN1_MIIC
help
Support for Ethernet controller on Renesas RZ/N1 SoC family.
This selects the Renesas RZ/N1 SoC glue layer support for
the stmmac device driver. This support can make use of a custom MII
converter PCS device.
config DWMAC_SOCFPGA
tristate "SOCFPGA dwmac support"
default ARCH_INTEL_SOCFPGA

1
drivers/net/ethernet/stmicro/stmmac/Makefile
View file

@ -21,6 +21,7 @@ obj-$(CONFIG_DWMAC_MEDIATEK) += dwmac-mediatek.o
obj-$(CONFIG_DWMAC_MESON) += dwmac-meson.o dwmac-meson8b.o
obj-$(CONFIG_DWMAC_QCOM_ETHQOS) += dwmac-qcom-ethqos.o
obj-$(CONFIG_DWMAC_ROCKCHIP) += dwmac-rk.o
obj-$(CONFIG_DWMAC_RZN1) += dwmac-rzn1.o
obj-$(CONFIG_DWMAC_SOCFPGA) += dwmac-altr-socfpga.o
obj-$(CONFIG_DWMAC_STARFIVE) += dwmac-starfive.o
obj-$(CONFIG_DWMAC_STI) += dwmac-sti.o

86
drivers/net/ethernet/stmicro/stmmac/dwmac-rzn1.c Normal file
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@ -0,0 +1,86 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2024 Schneider-Electric
*
* Clément Léger <clement.leger@bootlin.com>
*/
#include <linux/of.h>
#include <linux/pcs-rzn1-miic.h>
#include <linux/phylink.h>
#include <linux/platform_device.h>
#include "stmmac_platform.h"
#include "stmmac.h"
static int rzn1_dwmac_pcs_init(struct stmmac_priv *priv)
{
struct device_node *np = priv->device->of_node;
struct device_node *pcs_node;
struct phylink_pcs *pcs;
pcs_node = of_parse_phandle(np, "pcs-handle", 0);
if (pcs_node) {
pcs = miic_create(priv->device, pcs_node);
of_node_put(pcs_node);
if (IS_ERR(pcs))
return PTR_ERR(pcs);
priv->hw->phylink_pcs = pcs;
}
return 0;
}
static void rzn1_dwmac_pcs_exit(struct stmmac_priv *priv)
{
if (priv->hw->phylink_pcs)
miic_destroy(priv->hw->phylink_pcs);
}
static int rzn1_dwmac_probe(struct platform_device *pdev)
{
struct plat_stmmacenet_data *plat_dat;
struct stmmac_resources stmmac_res;
struct device *dev = &pdev->dev;
int ret;
ret = stmmac_get_platform_resources(pdev, &stmmac_res);
if (ret)
return ret;
plat_dat = devm_stmmac_probe_config_dt(pdev, stmmac_res.mac);
if (IS_ERR(plat_dat))
return PTR_ERR(plat_dat);
plat_dat->bsp_priv = plat_dat;
plat_dat->pcs_init = rzn1_dwmac_pcs_init;
plat_dat->pcs_exit = rzn1_dwmac_pcs_exit;
ret = stmmac_dvr_probe(dev, plat_dat, &stmmac_res);
if (ret)
return ret;
return 0;
}
static const struct of_device_id rzn1_dwmac_match[] = {
{ .compatible = "renesas,rzn1-gmac" },
{ }
};
MODULE_DEVICE_TABLE(of, rzn1_dwmac_match);
static struct platform_driver rzn1_dwmac_driver = {
.probe = rzn1_dwmac_probe,
.remove_new = stmmac_pltfr_remove,
.driver = {
.name = "rzn1-dwmac",
.of_match_table = rzn1_dwmac_match,
},
};
module_platform_driver(rzn1_dwmac_driver);
MODULE_AUTHOR("Clément Léger <clement.leger@bootlin.com>");
MODULE_DESCRIPTION("Renesas RZN1 DWMAC specific glue layer");
MODULE_LICENSE("GPL");