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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Maxime Coquelin , Alexandre Torgue , Richard Cochran , Jose Abreu , Liam Girdwood , Mark Brown , Christophe Roullier , Marek Vasut CC: , , , , Subject: [net-next,PATCH v3 2/2] net: stmmac: dwmac-stm32: stm32: add management of stm32mp25 for stm32 Date: Mon, 24 Jun 2024 09:10:52 +0200 Message-ID: <20240624071052.118042-3-christophe.roullier@foss.st.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240624071052.118042-1-christophe.roullier@foss.st.com> References: <20240624071052.118042-1-christophe.roullier@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.48.86.164] X-ClientProxiedBy: EQNCAS1NODE3.st.com (10.75.129.80) To SHFDAG1NODE2.st.com (10.75.129.70) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-06-24_06,2024-06-21_01,2024-05-17_01 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240624_001237_295978_6AA83137 X-CRM114-Status: GOOD ( 18.37 ) 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 Ethernet support for STM32MP25. STM32MP25 is STM32 SOC with 2 GMACs instances. GMAC IP version is SNPS 5.3x. GMAC IP configure with 2 RX and 4 TX queue. DMA HW capability register supported RX Checksum Offload Engine supported TX Checksum insertion supported Wake-Up On Lan supported TSO supported Signed-off-by: Christophe Roullier Reviewed-by: Simon Horman Reviewed-by: Marek Vasut --- .../net/ethernet/stmicro/stmmac/dwmac-stm32.c | 80 ++++++++++++++++++- 1 file changed, 77 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c index b2db0e26c4e4..23cf0a5b047f 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c @@ -53,7 +53,18 @@ #define SYSCFG_MCU_ETH_SEL_MII 0 #define SYSCFG_MCU_ETH_SEL_RMII 1 -/* STM32MP1 register definitions +/* STM32MP2 register definitions */ +#define SYSCFG_MP2_ETH_MASK GENMASK(31, 0) + +#define SYSCFG_ETHCR_ETH_PTP_CLK_SEL BIT(2) +#define SYSCFG_ETHCR_ETH_CLK_SEL BIT(1) +#define SYSCFG_ETHCR_ETH_REF_CLK_SEL BIT(0) + +#define SYSCFG_ETHCR_ETH_SEL_MII 0 +#define SYSCFG_ETHCR_ETH_SEL_RGMII BIT(4) +#define SYSCFG_ETHCR_ETH_SEL_RMII BIT(6) + +/* STM32MPx register definitions * * Below table summarizes the clock requirement and clock sources for * supported phy interface modes. @@ -104,7 +115,7 @@ struct stm32_ops { int (*parse_data)(struct stm32_dwmac *dwmac, struct device *dev); bool clk_rx_enable_in_suspend; - bool is_mp13; + bool is_mp13, is_mp2; u32 syscfg_clr_off; }; @@ -277,8 +288,55 @@ static int stm32mp1_configure_pmcr(struct plat_stmmacenet_data *plat_dat) dwmac->mode_mask, val); } +static int stm32mp2_configure_syscfg(struct plat_stmmacenet_data *plat_dat) +{ + struct stm32_dwmac *dwmac = plat_dat->bsp_priv; + u32 reg = dwmac->mode_reg; + int val = 0; + + switch (plat_dat->mac_interface) { + case PHY_INTERFACE_MODE_MII: + /* ETH_REF_CLK_SEL bit in SYSCFG register is not applicable in MII mode */ + break; + case PHY_INTERFACE_MODE_RMII: + val = SYSCFG_ETHCR_ETH_SEL_RMII; + if (dwmac->enable_eth_ck) { + /* Internal clock ETH_CLK of 50MHz from RCC is used */ + val |= SYSCFG_ETHCR_ETH_REF_CLK_SEL; + } + break; + case PHY_INTERFACE_MODE_RGMII: + case PHY_INTERFACE_MODE_RGMII_ID: + case PHY_INTERFACE_MODE_RGMII_RXID: + case PHY_INTERFACE_MODE_RGMII_TXID: + val = SYSCFG_ETHCR_ETH_SEL_RGMII; + fallthrough; + case PHY_INTERFACE_MODE_GMII: + if (dwmac->enable_eth_ck) { + /* Internal clock ETH_CLK of 125MHz from RCC is used */ + val |= SYSCFG_ETHCR_ETH_CLK_SEL; + } + break; + default: + dev_err(dwmac->dev, "Mode %s not supported", + phy_modes(plat_dat->mac_interface)); + /* Do not manage others interfaces */ + return -EINVAL; + } + + dev_dbg(dwmac->dev, "Mode %s", phy_modes(plat_dat->mac_interface)); + + /* Select PTP (IEEE1588) clock selection from RCC (ck_ker_ethxptp) */ + val |= SYSCFG_ETHCR_ETH_PTP_CLK_SEL; + + /* Update ETHCR (set register) */ + return regmap_update_bits(dwmac->regmap, reg, + SYSCFG_MP2_ETH_MASK, val); +} + static int stm32mp1_set_mode(struct plat_stmmacenet_data *plat_dat) { + struct stm32_dwmac *dwmac = plat_dat->bsp_priv; int ret; ret = stm32mp1_select_ethck_external(plat_dat); @@ -289,7 +347,10 @@ static int stm32mp1_set_mode(struct plat_stmmacenet_data *plat_dat) if (ret) return ret; - return stm32mp1_configure_pmcr(plat_dat); + if (!dwmac->ops->is_mp2) + return stm32mp1_configure_pmcr(plat_dat); + else + return stm32mp2_configure_syscfg(plat_dat); } static int stm32mcu_set_mode(struct plat_stmmacenet_data *plat_dat) @@ -365,6 +426,9 @@ static int stm32_dwmac_parse_data(struct stm32_dwmac *dwmac, return err; } + if (dwmac->ops->is_mp2) + return 0; + dwmac->mode_mask = SYSCFG_MP1_ETH_MASK; err = of_property_read_u32_index(np, "st,syscon", 2, &dwmac->mode_mask); if (err) { @@ -586,10 +650,20 @@ static struct stm32_ops stm32mp13_dwmac_data = { .clk_rx_enable_in_suspend = true }; +static struct stm32_ops stm32mp25_dwmac_data = { + .set_mode = stm32mp1_set_mode, + .suspend = stm32mp1_suspend, + .resume = stm32mp1_resume, + .parse_data = stm32mp1_parse_data, + .is_mp2 = true, + .clk_rx_enable_in_suspend = true +}; + static const struct of_device_id stm32_dwmac_match[] = { { .compatible = "st,stm32-dwmac", .data = &stm32mcu_dwmac_data}, { .compatible = "st,stm32mp1-dwmac", .data = &stm32mp1_dwmac_data}, { .compatible = "st,stm32mp13-dwmac", .data = &stm32mp13_dwmac_data}, + { .compatible = "st,stm32mp25-dwmac", .data = &stm32mp25_dwmac_data}, { } }; MODULE_DEVICE_TABLE(of, stm32_dwmac_match);