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Merge branch 'riscv-sophgo-add-ethernet-support-for-sg2044'

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Inochi Amaoto says:

====================
riscv: sophgo: Add ethernet support for SG2044

The ethernet controller of SG2044 is Synopsys DesignWare IP with
custom clock. Add glue layer for it.

v6: https://lore.kernel.org/20250305063920.803601-1-inochiama@gmail.com
v5: https://lore.kernel.org/20250216123953.1252523-1-inochiama@gmail.com
v4: https://lore.kernel.org/20250209013054.816580-1-inochiama@gmail.com
v3: https://lore.kernel.org/20241223005843.483805-1-inochiama@gmail.com
RFC: https://lore.kernel.org/20241101014327.513732-1-inochiama@gmail.com
v2: https://lore.kernel.org/20241025011000.244350-1-inochiama@gmail.com
v1: https://lore.kernel.org/20241021103617.653386-1-inochiama@gmail.com
====================

Link: https://patch.msgid.link/20250307011623.440792-1-inochiama@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jakub Kicinski 2025-03-07 19:06:38 -08:00
commit ed3d10f3ca
6 changed files with 229 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Documentation/devicetree/bindings/net/snps,dwmac.yaml
View File

@ -32,6 +32,7 @@ select:
- snps,dwmac-4.20a
- snps,dwmac-5.10a
- snps,dwmac-5.20
- snps,dwmac-5.30a
- snps,dwxgmac
- snps,dwxgmac-2.10
@ -98,8 +99,10 @@ properties:
- snps,dwmac-4.20a
- snps,dwmac-5.10a
- snps,dwmac-5.20
- snps,dwmac-5.30a
- snps,dwxgmac
- snps,dwxgmac-2.10
- sophgo,sg2044-dwmac
- starfive,jh7100-dwmac
- starfive,jh7110-dwmac
- tesla,fsd-ethqos
@ -632,6 +635,7 @@ allOf:
- snps,dwmac-4.20a
- snps,dwmac-5.10a
- snps,dwmac-5.20
- snps,dwmac-5.30a
- snps,dwxgmac
- snps,dwxgmac-2.10
- st,spear600-gmac

126
Documentation/devicetree/bindings/net/sophgo,sg2044-dwmac.yaml Normal file
View File

@ -0,0 +1,126 @@
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/net/sophgo,sg2044-dwmac.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Sophgo SG2044 DWMAC glue layer
maintainers:
- Inochi Amaoto <inochiama@gmail.com>
select:
properties:
compatible:
contains:
enum:
- sophgo,sg2044-dwmac
required:
- compatible
properties:
compatible:
items:
- const: sophgo,sg2044-dwmac
- const: snps,dwmac-5.30a
reg:
maxItems: 1
clocks:
items:
- description: GMAC main clock
- description: PTP clock
- description: TX clock
clock-names:
items:
- const: stmmaceth
- const: ptp_ref
- const: tx
dma-noncoherent: true
interrupts:
maxItems: 1
interrupt-names:
maxItems: 1
resets:
maxItems: 1
reset-names:
const: stmmaceth
required:
- compatible
- reg
- clocks
- clock-names
- interrupts
- interrupt-names
- resets
- reset-names
allOf:
- $ref: snps,dwmac.yaml#
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
ethernet@30006000 {
compatible = "sophgo,sg2044-dwmac", "snps,dwmac-5.30a";
reg = <0x30006000 0x4000>;
clocks = <&clk 151>, <&clk 152>, <&clk 154>;
clock-names = "stmmaceth", "ptp_ref", "tx";
interrupt-parent = <&intc>;
interrupts = <296 IRQ_TYPE_LEVEL_HIGH>;
interrupt-names = "macirq";
resets = <&rst 30>;
reset-names = "stmmaceth";
snps,multicast-filter-bins = <0>;
snps,perfect-filter-entries = <1>;
snps,aal;
snps,tso;
snps,txpbl = <32>;
snps,rxpbl = <32>;
snps,mtl-rx-config = <&gmac0_mtl_rx_setup>;
snps,mtl-tx-config = <&gmac0_mtl_tx_setup>;
snps,axi-config = <&gmac0_stmmac_axi_setup>;
status = "disabled";
gmac0_mtl_rx_setup: rx-queues-config {
snps,rx-queues-to-use = <8>;
snps,rx-sched-wsp;
queue0 {};
queue1 {};
queue2 {};
queue3 {};
queue4 {};
queue5 {};
queue6 {};
queue7 {};
};
gmac0_mtl_tx_setup: tx-queues-config {
snps,tx-queues-to-use = <8>;
queue0 {};
queue1 {};
queue2 {};
queue3 {};
queue4 {};
queue5 {};
queue6 {};
queue7 {};
};
gmac0_stmmac_axi_setup: stmmac-axi-config {
snps,blen = <16 8 4 0 0 0 0>;
snps,wr_osr_lmt = <1>;
snps,rd_osr_lmt = <2>;
};
};

11
drivers/net/ethernet/stmicro/stmmac/Kconfig
View File

@ -181,6 +181,17 @@ config DWMAC_SOCFPGA
for the stmmac device driver. This driver is used for
arria5 and cyclone5 FPGA SoCs.
config DWMAC_SOPHGO
tristate "Sophgo dwmac support"
depends on OF && (ARCH_SOPHGO || COMPILE_TEST)
default m if ARCH_SOPHGO
help
Support for ethernet controllers on Sophgo RISC-V SoCs
This selects the Sophgo SoC specific glue layer support
for the stmmac device driver. This driver is used for the
ethernet controllers on various Sophgo SoCs.
config DWMAC_STARFIVE
tristate "StarFive dwmac support"
depends on OF && (ARCH_STARFIVE || COMPILE_TEST)

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

@ -24,6 +24,7 @@ obj-$(CONFIG_DWMAC_ROCKCHIP) += dwmac-rk.o
obj-$(CONFIG_DWMAC_RZN1) += dwmac-rzn1.o
obj-$(CONFIG_DWMAC_S32) += dwmac-s32.o
obj-$(CONFIG_DWMAC_SOCFPGA) += dwmac-altr-socfpga.o
obj-$(CONFIG_DWMAC_SOPHGO) += dwmac-sophgo.o
obj-$(CONFIG_DWMAC_STARFIVE) += dwmac-starfive.o
obj-$(CONFIG_DWMAC_STI) += dwmac-sti.o
obj-$(CONFIG_DWMAC_STM32) += dwmac-stm32.o

75
drivers/net/ethernet/stmicro/stmmac/dwmac-sophgo.c Normal file
View File

@ -0,0 +1,75 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Sophgo DWMAC platform driver
*
* Copyright (C) 2024 Inochi Amaoto <inochiama@gmail.com>
*/
#include <linux/clk.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/platform_device.h>
#include "stmmac_platform.h"
static int sophgo_sg2044_dwmac_init(struct platform_device *pdev,
struct plat_stmmacenet_data *plat_dat,
struct stmmac_resources *stmmac_res)
{
plat_dat->clk_tx_i = devm_clk_get_enabled(&pdev->dev, "tx");
if (IS_ERR(plat_dat->clk_tx_i))
return dev_err_probe(&pdev->dev, PTR_ERR(plat_dat->clk_tx_i),
"failed to get tx clock\n");
plat_dat->flags |= STMMAC_FLAG_SPH_DISABLE;
plat_dat->set_clk_tx_rate = stmmac_set_clk_tx_rate;
plat_dat->multicast_filter_bins = 0;
plat_dat->unicast_filter_entries = 1;
return 0;
}
static int sophgo_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 dev_err_probe(dev, ret,
"failed to get platform resources\n");
plat_dat = devm_stmmac_probe_config_dt(pdev, stmmac_res.mac);
if (IS_ERR(plat_dat))
return dev_err_probe(dev, PTR_ERR(plat_dat),
"failed to parse DT parameters\n");
ret = sophgo_sg2044_dwmac_init(pdev, plat_dat, &stmmac_res);
if (ret)
return ret;
return stmmac_dvr_probe(dev, plat_dat, &stmmac_res);
}
static const struct of_device_id sophgo_dwmac_match[] = {
{ .compatible = "sophgo,sg2044-dwmac" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, sophgo_dwmac_match);
static struct platform_driver sophgo_dwmac_driver = {
.probe = sophgo_dwmac_probe,
.remove = stmmac_pltfr_remove,
.driver = {
.name = "sophgo-dwmac",
.pm = &stmmac_pltfr_pm_ops,
.of_match_table = sophgo_dwmac_match,
},
};
module_platform_driver(sophgo_dwmac_driver);
MODULE_AUTHOR("Inochi Amaoto <inochiama@gmail.com>");
MODULE_DESCRIPTION("Sophgo DWMAC platform driver");
MODULE_LICENSE("GPL");

17
drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
View File

@ -405,6 +405,17 @@ static int stmmac_of_get_mac_mode(struct device_node *np)
return -ENODEV;
}
/* Compatible string array for all gmac4 devices */
static const char * const stmmac_gmac4_compats[] = {
"snps,dwmac-4.00",
"snps,dwmac-4.10a",
"snps,dwmac-4.20a",
"snps,dwmac-5.10a",
"snps,dwmac-5.20",
"snps,dwmac-5.30a",
NULL
};
/**
* stmmac_probe_config_dt - parse device-tree driver parameters
* @pdev: platform_device structure
@ -538,11 +549,7 @@ stmmac_probe_config_dt(struct platform_device *pdev, u8 *mac)
plat->pmt = 1;
}
if (of_device_is_compatible(np, "snps,dwmac-4.00") ||
of_device_is_compatible(np, "snps,dwmac-4.10a") ||
of_device_is_compatible(np, "snps,dwmac-4.20a") ||
of_device_is_compatible(np, "snps,dwmac-5.10a") ||
of_device_is_compatible(np, "snps,dwmac-5.20")) {
if (of_device_compatible_match(np, stmmac_gmac4_compats)) {
plat->has_gmac4 = 1;
plat->has_gmac = 0;
plat->pmt = 1;