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X-OriginatorOrg: nuvoton.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Nov 2023 15:17:39.5869 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: bdf72705-85d7-41a8-ecab-08dbeaa50033 X-MS-Exchange-CrossTenant-Id: a3f24931-d403-4b4a-94f1-7d83ac638e07 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=a3f24931-d403-4b4a-94f1-7d83ac638e07;Ip=[175.98.123.7];Helo=[NTHCCAS04.nuvoton.com] X-MS-Exchange-CrossTenant-AuthSource: SG2PEPF000B66CA.apcprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SI2PR03MB5531 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231121_071753_278431_4D7AC544 X-CRM114-Status: GOOD ( 13.93 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add documentation to describe Nuvoton BMC NPCM dwmac driver(sgmii). Signed-off-by: Tomer Maimon --- .../bindings/net/nuvoton,npcm8xx-sgmii.yaml | 72 +++++++++++++++++++ .../devicetree/bindings/net/snps,dwmac.yaml | 1 + 2 files changed, 73 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/nuvoton,npcm8xx-sgmii.yaml diff --git a/Documentation/devicetree/bindings/net/nuvoton,npcm8xx-sgmii.yaml b/Documentation/devicetree/bindings/net/nuvoton,npcm8xx-sgmii.yaml new file mode 100644 index 000000000000..6a5f2cade7c9 --- /dev/null +++ b/Documentation/devicetree/bindings/net/nuvoton,npcm8xx-sgmii.yaml @@ -0,0 +1,72 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/net/nuvoton,npcm8xx-sgmii.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Nuvoton NPCM DWMAC SGMII Ethernet controller + +maintainers: + - Tomer Maimon + +select: + properties: + compatible: + contains: + enum: + - nuvoton,npcm8xx-sgmii + required: + - compatible + +allOf: + - $ref: snps,dwmac.yaml# + +properties: + compatible: + oneOf: + - items: + - enum: + - nuvoton,npcm8xx-sgmii + - const: snps,dwmac-3.50a + reg: + items: + - description: + The first range represent DWMAC controller registers. + - description: + The second range represent PCS configuration registers. + + clocks: + items: + - description: GMAC main clock + + clock-names: + items: + - const: stmmaceth + +required: + - compatible + - reg + - clocks + - clock-names + +unevaluatedProperties: false + +examples: + - | + #include + #include + + ahb { + #address-cells = <2>; + #size-cells = <2>; + + gmac0: ethernet@f0802000 { + compatible = "nuvoton,npcm8xx-sgmii","snps,dwmac-3.50a"; + reg = <0x0 0xf0802000 0x0 0x2000>, <0x0 0xf0780000 0x0 0x200>; + interrupts = ; + interrupt-names = "macirq"; + clocks = <&clk NPCM8XX_CLK_AHB>; + clock-names = "stmmaceth"; + phy-mode = "rgmii-id"; + }; + }; diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml index 5c2769dc689a..ba52dbc85144 100644 --- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml +++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml @@ -66,6 +66,7 @@ properties: - ingenic,x2000-mac - loongson,ls2k-dwmac - loongson,ls7a-dwmac + - nuvoton,npcm8xx-sgmii - qcom,qcs404-ethqos - qcom,sa8775p-ethqos - qcom,sc8280xp-ethqos From patchwork Tue Nov 21 15:17:33 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomer Maimon X-Patchwork-Id: 13463316 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 32496C61D85 for ; 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X-OriginatorOrg: nuvoton.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Nov 2023 15:17:40.3682 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 1ae92dbe-d3bc-4f90-22b0-08dbeaa500ab X-MS-Exchange-CrossTenant-Id: a3f24931-d403-4b4a-94f1-7d83ac638e07 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=a3f24931-d403-4b4a-94f1-7d83ac638e07;Ip=[175.98.123.7];Helo=[NTHCCAS04.nuvoton.com] X-MS-Exchange-CrossTenant-AuthSource: SG2PEPF000B66CA.apcprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SI6PR03MB8705 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231121_073306_104473_661322DC X-CRM114-Status: GOOD ( 21.81 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add Nuvoton NPCM BMC SoCs support to STMMAC dwmac driver. And modify MAINTAINERS to add a new F: entry for this driver. Signed-off-by: Tomer Maimon --- MAINTAINERS | 1 + drivers/net/ethernet/stmicro/stmmac/Kconfig | 9 ++ drivers/net/ethernet/stmicro/stmmac/Makefile | 1 + .../net/ethernet/stmicro/stmmac/dwmac-npcm.c | 121 ++++++++++++++++++ 4 files changed, 132 insertions(+) create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-npcm.c diff --git a/MAINTAINERS b/MAINTAINERS index 5c9f868e13b6..43059c7d00c7 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2507,6 +2507,7 @@ F: arch/arm64/boot/dts/nuvoton/ F: drivers/*/*/*npcm* F: drivers/*/*npcm* F: drivers/rtc/rtc-nct3018y.c +F: drivers/net/ethernet/stmicro/stmmac/dwmac-npcm.c F: include/dt-bindings/clock/nuvoton,npcm7xx-clock.h F: include/dt-bindings/clock/nuvoton,npcm845-clk.h diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig index a2b9e289aa36..2487a674d0d3 100644 --- a/drivers/net/ethernet/stmicro/stmmac/Kconfig +++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig @@ -121,6 +121,15 @@ config DWMAC_MESON the stmmac device driver. This driver is used for Meson6, Meson8, Meson8b and GXBB SoCs. +config DWMAC_NPCM + tristate "Nuvoton NPCM dwmac support" + depends on OF && (ARCH_NPCM || COMPILE_TEST) + help + Support for Ethernet controller on Nuvoton NPCM BMC SoCs. + + This selects the Nuvoton NPCM BMC SoC glue layer support for + the stmmac device driver. This driver is used for NPCM8xx SoCs. + config DWMAC_QCOM_ETHQOS tristate "Qualcomm ETHQOS support" default ARCH_QCOM diff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/ethernet/stmicro/stmmac/Makefile index 80e598bd4255..1c86c8ca39f0 100644 --- a/drivers/net/ethernet/stmicro/stmmac/Makefile +++ b/drivers/net/ethernet/stmicro/stmmac/Makefile @@ -19,6 +19,7 @@ obj-$(CONFIG_DWMAC_IPQ806X) += dwmac-ipq806x.o obj-$(CONFIG_DWMAC_LPC18XX) += dwmac-lpc18xx.o obj-$(CONFIG_DWMAC_MEDIATEK) += dwmac-mediatek.o obj-$(CONFIG_DWMAC_MESON) += dwmac-meson.o dwmac-meson8b.o +obj-$(CONFIG_DWMAC_NPCM) += dwmac-npcm.o obj-$(CONFIG_DWMAC_QCOM_ETHQOS) += dwmac-qcom-ethqos.o obj-$(CONFIG_DWMAC_ROCKCHIP) += dwmac-rk.o obj-$(CONFIG_DWMAC_SOCFPGA) += dwmac-altr-socfpga.o diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-npcm.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-npcm.c new file mode 100644 index 000000000000..dbb857661142 --- /dev/null +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-npcm.c @@ -0,0 +1,121 @@ +// SPDX-License-Identifier: GPL-2.0-only +// Copyright (c) 2023 Nuvoton Technology corporation. + +#include +#include +#include +#include +#include +#include +#include + +#include "stmmac_platform.h" + +#define IND_AC_BA_REG 0x1FE +#define SR_MII_CTRL 0x3E0000 + +#define PCS_SR_MII_CTRL_REG 0x0 +#define PCS_SPEED_SELECT6 BIT(6) +#define PCS_AN_ENABLE BIT(12) +#define PCS_SPEED_SELECT13 BIT(13) +#define PCS_RST BIT(15) + +#define PCS_MASK_SPEED 0xDFBF + +struct npcm_dwmac { + void __iomem *reg; +}; + +static void npcm_dwmac_fix_mac_speed(void *priv, unsigned int speed, + unsigned int mode) +{ + struct npcm_dwmac *dwmac = priv; + u16 val; + + iowrite16((u16)(SR_MII_CTRL >> 9), dwmac->reg + IND_AC_BA_REG); + val = ioread16(dwmac->reg + PCS_SR_MII_CTRL_REG); + val &= PCS_MASK_SPEED; + + switch (speed) { + case SPEED_1000: + val |= PCS_SPEED_SELECT6; + break; + case SPEED_100: + val |= PCS_SPEED_SELECT13; + break; + case SPEED_10: + break; + } + + iowrite16(val, dwmac->reg + PCS_SR_MII_CTRL_REG); +} + +void npcm_dwmac_pcs_init(struct npcm_dwmac *dwmac, struct device *dev, + struct plat_stmmacenet_data *plat_dat) +{ + u16 val; + + iowrite16((u16)(SR_MII_CTRL >> 9), dwmac->reg + IND_AC_BA_REG); + val = ioread16(dwmac->reg + PCS_SR_MII_CTRL_REG); + val |= PCS_RST; + iowrite16(val, dwmac->reg + PCS_SR_MII_CTRL_REG); + + while (val & PCS_RST) + val = ioread16(dwmac->reg + PCS_SR_MII_CTRL_REG); + + val &= ~(PCS_AN_ENABLE); + iowrite16(val, dwmac->reg + PCS_SR_MII_CTRL_REG); +} + +static int npcm_dwmac_probe(struct platform_device *pdev) +{ + struct plat_stmmacenet_data *plat_dat; + struct stmmac_resources stmmac_res; + struct npcm_dwmac *dwmac; + 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); + + dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL); + if (!dwmac) + ret = -ENOMEM; + + dwmac->reg = devm_platform_ioremap_resource(pdev, 1); + if (IS_ERR(dwmac->reg)) + ret = PTR_ERR(dwmac->reg); + + npcm_dwmac_pcs_init(dwmac, &pdev->dev, plat_dat); + + plat_dat->has_gmac = true; + plat_dat->bsp_priv = dwmac; + plat_dat->fix_mac_speed = npcm_dwmac_fix_mac_speed; + + return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res); +} + +static const struct of_device_id npcm_dwmac_match[] = { + { .compatible = "nuvoton,npcm8xx-sgmii" }, + { } +}; +MODULE_DEVICE_TABLE(of, npcm_dwmac_match); + +static struct platform_driver npcm_dwmac_driver = { + .probe = npcm_dwmac_probe, + .remove_new = stmmac_pltfr_remove, + .driver = { + .name = "npcm-dwmac", + .pm = &stmmac_pltfr_pm_ops, + .of_match_table = npcm_dwmac_match, + }, +}; +module_platform_driver(npcm_dwmac_driver); + +MODULE_AUTHOR("Tomer Maimon "); +MODULE_DESCRIPTION("Nuvoton NPCM DWMAC glue layer"); +MODULE_LICENSE("GPL v2");