Commit f360446e authored by Clément Léger's avatar Clément Léger Committed by Jakub Kicinski
Browse files

net: stmmac: add support for RZ/N1 GMAC 



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: default avatarClément Léger <clement.leger@bootlin.com>
Co-developed-by: default avatarRomain Gantois <romain.gantois@bootlin.com>
Signed-off-by: default avatarRomain Gantois <romain.gantois@bootlin.com>
Reviewed-by: default avatarRussell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: default avatarHariprasad Kelam <hkelam@marvell.com>
Link: https://lore.kernel.org/r/20240513-rzn1-gmac1-v7-6-6acf58b5440d@bootlin.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 81b418a6

MAINTAINERS

+6 −0
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@@ -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

























drivers/net/ethernet/stmicro/stmmac/Kconfig



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@@ -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
































drivers/net/ethernet/stmicro/stmmac/Makefile



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@@ -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
































drivers/net/ethernet/stmicro/stmmac/dwmac-rzn1.c
0 → 100644



+86
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// 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");